Crushing ratio is one aspect affecting crushing result
Crushing ratio also named size reduction ration is a measure of crushing
effect, the concept of common crushing ratio. Crushing ratio is raw material
size and crushed after the product size ratio. It is shown that after the broken
table of reducing the extent of raw materials.
Crushing ration or size reduction ration features the following methods.
1). Crushing material before the maximum particle size of crushed products
maximum particle size ratio calculated I = Dmax / Dmax type Dmax -- broken
before the material of the maximum particle size; Dmax -- broken materials
maximum particle size.
Due to the different habits, maximum size value method. Britain and the
United States in 80% through the sieve mesh material width for the maximum
particle size diameter, China and the former Soviet Union to material 95% can
pass sieve mesh width of maximum particle diameter.
2). Crusher with a feeding opening width and the width of discharge opening
ratio of I = 0.85B / B type B - crusher feeding mouth width; B - crusherwidth of
discharge opening; 0.85 guarantee crusher on the effective width of feed
material. Outlet width of coarse crusher, maximum width of discharge opening; in
crusher takes the minimum width of discharge opening.
3). With average particle size calculation of I = Dcp / DCP type Dcp - broken
before the material with an average diameter of DCP - broken materials; average
diameter.
Hongxing counterattack crusher with big crushing ratio.
The crushing impact
crusher than can achieve more than 50, finished materials particles grain
shape good. Under the impact, being broken down its most vulnerable material
often, this selective fractured planes crushing method, the grain-size uniform,
discharging a cube shapes, fine powder and dust content is low, and so, in need
of situations. Cubes particles For example, prevent slippery pavement of high
grade highway, usually by impact breaker as
eventually broken equipment, producing concrete aggregate.
The cost of power is a major expense in crushing and grinding, so the factors
that control this cost are important.
Recently hydraulic technology is hotshot in crusher design
Most of the current manufacturing crusher drive technology are driving the
use of mechanical equipment and electronic drive to achieve, but recent crusher
manufacturing began to drive technology into the field of hydraulic drive,
hydraulic drive refers to the so-called motor driven hydraulic pump to establish
a certain degree of hydraulic, hydraulic oil through the valve to the specified
cylinder, push the piston movement, but there are some views that the hydraulic
drive technology is outdated, but the characteristics of the hydraulic hybrid
technology is still a lot of applications is widely used with, and meet the
large demand for actual production.
With the changes in market demand and crusher increasing the degree of
competition in the industry, can effectively increase the life of a variety of
crusher equipment, has been following the lower production costs, increase
production of the device after another basic requirement, but as buyers, in
order to increase production, often make the crusher at a high load operating
state, with the temporary increase of production, but has largely depleted the
crusher equipment should have life, and crusher of the hydraulic drive
technology used, not only in improving the efficiency, but also more effective
to reduce the load on the crusher, the crusher equipment to reduce the weight
for the crusher equipment to create a more healthy production environment.
The main structure of the hydraulic crusher includes hydraulic breaker, work
equipment, hydraulic equipment, electrical equipment, controls, hydraulic
breakers can be a special place of mineral aggregate crushing, and removal of
obstruction to the feeder, make it work.
In addition to the hydraulic drive technology in dealing with large volumes
of applications has more advantages, including; big load transfer; extrusion
molding, pressure molding technology; bending, stamping and other forming
processes; connection and assembly processes, etc..
For customers they prefer machinery with high-quality and high-efficiency
Along with the rapid growth of Chinese economy, our country has made great
achievements in various construction, but meanwhile we also pay heavy cost for
resource waste and environmental destruction. The contradiction between economic
development and resources and environment is gradually becoming more acute. The
issue on environmental pollution arouse intense concern among the masses. Thus,
to achieve energy saving and emission reduction needs the full cooperation of
all sectors of society and each enterprise, and the active guidance from the
quality and environment departments is especially of great significance.
As one famous joint-stock enterprise for mining machinery in China, Henan
Hongxing Mining Machinery Co., Ltd. has already placed the plan of energy saving
and emission reduction on the agenda. We positively respond to the national
policy, and strictly adhere to the policy stipulated by the government to
process our products. So we can further improve our company's social influence
while making profits.
Energy saving and emission reduction not only brings social and economic
benefits but also is the responsibility for the mining machinery industry. The
equipments manufactured by Hongxing Machinery Group are strictly in accordance
with the requirements of the national quality and environment departments.
Hongxing Mining Machinery is making every effort to push forward the building of
a new environment-friendly society. Such as, energy-saving coal ball mill, ultra-fine Raymond mill, mobile crushing station, YK
series vibrating screen. These
high-quality and efficient products are well received among most
customers.
The configuration of a mill make great difference for production
In the design of large industrial milling process, when the production scale
and product mix basically determined, how to configure the mill, will directly
affect the milling system design, process effectiveness and economic efficiency.
Our powder making machine is designed with the most advanced host device,
together with a special milling machine technical parameters, selection
processes, unique grinding, hit with technology, investing in rare cases for
process transformation, the effect is significant, with good promotion
prospects.
Production is a milling process design with the goal of the important
indicators, and the mill model, the choice of the number, there is the size of
investment. The milling machine milling process is the core of the device, its
effect is related to grinding flour yield, yield quality and other economic and
technical indicators. Now most of the milling process are selected according to
the first production of mill type and quantity, and then redistributed to the
various aspects of the milling process.
Here, for your better learning about the mill, there are some recommendations
as follows.
(1) Reasonably determine the mill type and quantity of the industrial milling
process more reasonable and better. Mill more, the system assigns the finer
adjustment of the system greater flexibility, the more perfect technology.
(2) Different types of milling machines for use with both investment and
reduce operating costs savings. Meet the process requirements, the mill can mix
different models in order to reduce investment.
Mill production configuration must be designed based on the process is
reasonable, the principle advanced in comparison, the analysis of different
configurations, based on to be preferred in order to achieve the desired effect
of milling process.
Any operation of machinery runs with technical training of operator
As with any piece of complex equipment operating in a difficult environment
and in order to protect your investment, both your operators and technicians
need a good understanding of the equipment, how best to operate it safely and
efficiently and care for it. For example, Raymond mill use and maintenance
in the use of the process, there should be a fixed charge of personnel, the
operator must have a certain level of technology.
1. Before the installation the operator must carry out the necessary
technical training, so that understanding the principles of mill performance,
familiar procedures.
2. For the mill to normal, the device should be developed, the safe
operation of equipment maintenance system can ensure the long-term safe
operation of the mill, and have the necessary maintenance tools and grease and
corresponding accessories.
3. Mill use for some time, maintenance should be carried out, while roller
blade grinding ring repair replacement of wearing parts such as handle, roller
device in use before and after the bolt nut should be carefully examined to see
whether there is loosening , whether to add a little grease.
4. The roller device to use more than 500 hours or so to replace the roller,
the roller bearing kit must be cleaned of all, the damaged parts should be
replaced, fuel pump and the tool can be used to manually add butter gun.
5. Fineness adjustment, according to the size of the material, hardness,
moisture content, the proportion of different degree of processing of different
thickness, can be adjusted at the top of the analyzer, high speed, fineness, low
speed, low fineness. Improve the fineness, the output will be reduced
accordingly, if it is mainly the fan speed when debugging, the user can
flexibly.
6. Ring roller mill scrap the limit, the remaining minimum wall thickness of
not less than 10mm.
7. Stop, stop the feeding, the host continues to He, the residual abrasive
grinding continues, about one minute, turn off the master motor and the motor
analyzer, stop grinding work, and later to stop the fan motor to blow the net
residual powder.
Roll crusher, teeth roll crusher both take an important position
The roller crusher is mainly used for the crushing of medium or
lower-hardness mines and rocks with medium or lower rigidity in the trade of
cement, metallurgy, chemical industry, electric power, coal and other
industrial. The crushing materials include limestone, slag, coke and coal.
This teeth roll crusher apply to coal, metallurgy, mine, chemical industry,
building materials industries more suitable for large coal or coal gangue) crude
(including the broken.
Teeth roll crusher work principle and main structure: teeth roll crusher
mainly adopts special wear-resisting teeth roll high-speed material crushing
(for errupted tooth roll crusher traditional with a low extrusion), formed the
mechanism of high productivity.
The five categories used in the crushing machine, Roll crusher and hammer crusher impact with the
main role belongs to brittle material to break the machine, it is often called
the impact crusher.
Impact crusher and the crusher-based compression, such as jaw, cone and roll
crusher and other match, have the following characteristics:
1). Crushing ratio. Roll crusher can reach the crushing ratio above 50, while
the jaw, cone and roll crusher is difficult to over 20. Thus, in the need for
single-stage crushing of occasions, such as cement industry, limestone crusher, Roll
crusher is widely used.
2). Good product particles. Under the impact, often by crushing the material
level of fragmentation along its most vulnerable, such selective fragmentation
method, the particles with a high probability of a cube shape, so the teeth roll
crusher product content as low as a percentage flakiness 10%, while the jaw,
cone and roll crusher products such as the percentage flakiness will be higher
than 15% of the content. Thus, particles in the cube where needed. For example,
high-grade anti-skid road surface, usually toothed roll crusher to break as the
end device, produced concrete aggregate.
However, because the teeth roll crusher is crushing the material using the
impact theory, the combat conditions, such as: hammer, hammer, impact plate,
etc., in use wear very quickly. This defect, in the long period of time
proportionate to restrict the teeth roll crusher combined range. Can only be
used for crushing of hard materials. Followed by the application of new
wear-resistant materials, roll crusher in cavity design, the rotor structure,
especially the hammer plate materials and chucking methods is fundamentally
different. Roll made of hard rock
crusher, the beginning of the core parts of its hammer to rely on import,
domestic hammer in the 85″ period as a ministerial-level scientific research
projects, project success, not only to replace the entry of domestic plate
hammer, and has been exported to Europe, Japan and other countries.
This teeth roll crusher's frame parts include transmission device, crushing
roller, mechanical spring mechanism, linkage mechanism etc.
Which type of screen is better for vibrating screen
Vibrating screen works
depending on the complex rotary type vibration generated by vibrator. The
vibrating screen is mainly classified into linear vibrating screen and circular
vibrating screen. According to the vibrating type of the screen, the vibrating
screen can be classified into the single shaft vibrator and double shaft
vibrating screen. Vibrating screen is mainly used in mining, smelting, building
materials, coal, refractory materials, light industry, chemical industry,
medicine, food and other industries.
It is very beneficial to improve the working efficiency of a vibrating screen
that the vibrating screen adopts the thin elastic screen net as the screen base.
This screen net is generally made by rubber or polyurethane materials. Which can
decrease the adhesive force between the screen surface and the raw materials,
and it will make the material produce a second high frequency vibration to avoid
blocking the screen hole and at the same time increases the permeability of the
raw material. It also can release the mechanism of the screened material on the
screen surface, which can bare larger vibrating amplitude than the steel-wire
screen net.
Advantages of a metalloid screen net mainly include the following few
points:
1) It can effectively improve the screening efficiency of the vibrating
screen. The screening efficiency of which is 20% higher than that of metal
screen net.
2) It has a better wear resistance and longer service life. The average life
of the metalloid screen is 25 times longer than the metal mesh.
3) It can also reduce the installation time, which improves the operation
rate of the equipment. Due to the non metallic material screen greatly
prolonging the service life of the screen surface and reducing the number of its
replacement, the equipment operating rate of metalloid screen is generally 15%
higher of the metal screen.
4) It can reduce noise, improve the operating environment. When working, the
metal screen not only generates sympathetic vibration with the screen box, it
also produce some fibrillation, which will be more obvious after its worn.
Moreover, the rigid collision of the materials with the box surface and the
vibration of the other components, which all will cause high noise. However, the
metalloid screen is a whole screen plate, which has the certain buffer effect
and can reduce the noise to about 20dB.
Hammer crusher needs examinations and improvements
Hammer crusher is applied
to crushing medium hard and weak corrosive materials. Hammer crusher crush
materials mainly by the shock effect to the materials. Crushing process is
roughly like this: materials enter into the crusher, and then are hit by the
hammer with high-speed rotation. The broken materials obtain kinetic energy from
the hammer, and then run toward the baffles, sieve article. At the same time,
materials impact each other, and been repeatedly broken, some of the materials
discharged from the gap of the sieve article, and some bigger materials will be
impacted, grinded again by the hammer, and become the products with required
granularity.
Disadvantages of the hammer crusher: The hammer and the
sieve article wear easily, especially crushing hard materials. When crushing
sticky materials, the sieve article will be stocked by the materials, and will
cause downtime. So the moisture of the material should not exceed 15%.
The existing problems: The original machine adopts double
screen frame, but because of the middle demi-screen frame directly bears the
impact from the rotor and the chalk,which leading a larger worn of the middle
and less worn on both sides.After the the excessive worn of the middle
demi-screen leads the frame installation insecure and usually appearing the
phenomenon of loose and peeling,which will cause a number of maintenance
work.What's more, the worn middle screen frame equals that the screen of about
14% of the material area were backed up, the broken qualified limestone in here
can't be put out, part of the chalk in crusher is repeatedly broken, leading to
a low efficiency of broken, the time of yield is not high.
The improving measures: 1)Remove the middle demi-vice screen
frame and change the original double screen frame to a single one and then
change the article screen of the original 2 to 1 root the root article screen.
2)The material of the article screen remain unchanged then integrally cast a
strengthen rab in the middle of the article screen to increase strength of the
article screen. 3)And keep the turning circle distance of the hammer between the
article screen invariant after the transformation.
The effect of the improvement: Due to removing the middle
demi-vice article screen frame,the qulified limestone coal pulverizer through
the screening area increased 14% or so of the article, and improve the crusher
of crushing efficiency to a production increased to 65 ~ 75 t/h.The limestone of
former 2.4 kWh/t power consumption has been reduced to 2.0 kWh/t.For every vice
hammer gravel only 15000 t but after reform because of the increased production,
25000 t just needs to change the gravel 1 vice hammer.
And the service life of the article screen frame and screen than before
technical article extended for six months.Because of original article is easy to
wear a sieve ,which leads the machine often to repair and a number of
maintenance work and affect production.The problem has been solved after the
reformation,and every month it will save 2 package stainless steel rod.
High efficiency in mining machinery is the main force
There is an report about China mining machinery industry output: According to
the information, the gross industrial output value of the metallurgical mine
machinery industry in China has reached 177.993 billion RMB this 1 ~ 6 month
increasing at 24.95% over the last year.
The automation,large-scale technology and energy-saving technology of the
crushing screening equipment will be the key topic of the researching in
crushing equipment manufacturing enterprises in the future.Mining crushing
screening equipment is the important equipment of the industrial raw material
and energy production. And the improving efficiency will be the important part
of the energy saving and the resource saving.
With the closing of the large number of small metallurgy, small coal mine,
small cement enterprise, large new concentrator, large coal and large cement plant were generally
built, which means the higher request of of the washing and dressing equipment
was raised. The equipment of great processing capacity, high crushing screening
efficiency and reliable operation is in urgent need.The commonly used crushing
screening equipment include mobile crusher, cone crusher, jaw crusher, impact crusher,
vertical impact crusher, vibrating
screen, sand washing
machine, the feeder and so on.
Experts in the field of mining equipment and machinery are pointing out that
high-efficiency and energy-saving is the developing trend in this industry.
For instance, opencast working equipment is developing for the
high-reliability, energy-saving, high-comfort, auto-operating condition
surveillance and auto control, which adopts many methods, such as power supply
by controllable silicon, timing by AC frequency conversion, concentrated
lubrication by grease, shock absorption, pressure and purification in the cab,
air conditioner and noise elimination.
The development of high-new equipment requires plentiful functional materials
and the application of modern fine crushing technology has become an important
symbol of embodying the technology level.
For the washing equipment, all the countries are exploring the new way to
meet the separating requirement of diversified minerals and different impurities
and make the separating equipment developing for high-efficiency and
diversification. The high-efficiency concentrator substitutes the common
concentrator in some fields and the new filter will develop quickly, such as
auto-filter press with extrusion die and the horizontal belt filter.
Bring up the promising application of artificial sand
The natural sand has several disadvantages compared to artificial sand, which
make artificial sand become the mainstay of stone-production in the field of
construction. Pulled by the need of expanding domestic demand, infrastructure
investment, such as roads, railways etc, is increasing. Such large engineering
project needs lots of high quality sand. However，natural sand is non-renewable
resources, with the large-scale exploitation, is increasingly drying up. In such
a scenario, artificial sand is seen as a welcome alternative to natural sand.
The application of artificial sand will effectively make great contribution to
the development of our life. In the process of sand maker production, sand
making and impact crusher g
equipment is necessary. The raw materials mainly are granite, limestone, basalt,
pebbles etc, through a series of crushing and screening equipment in order to
reach required level.
Artificial sand is widely used in road construction, concrete industry, etc.
As the field of industry application gradually expanded, the gradual application
of natural sand work more and failed to keep pace with the various sectors of
modern world development needs. For the most part, artificial sand is produced
to meet the great needs. More advanced sand making machines
have been invented to push forward human civilization. Now here you can learn
more about the mechanism of the advantages of artificial sand.
(1) artificial sand suitable for large-scale factory production. Can build a
complete management system, responsibility for security, quality,
accountability, quality control laboratory is responsible for sand.
(2) pre-mining companies can mine reserves, the quality of exploration. May,
according to the specific circumstances of mining plans, you can night a
continuous and stable development of space. This has changed now that natural
sand mining plan, no month temporary state.
(3) the strength of artificial sand, including weathered rock, soft rock
small, clay (block) the amount of screening can be manually controlled. Chemical
composition of base metal, stone line, no negative effect on the concrete,
suitable for high-strength concrete and high-performance concrete.
(4) mechanisms of sand particle size distribution, fineness modulus
selective, different lithology choose a different crushing machinery, in order
to achieve certain targets, some equipment is adjustable.
(5) mechanism with a certain amount of powder sand, clay powder and the
composition of these different size are also different, role in the concrete are
also different. Mud and powder fineness, even though there is less than 0.075inl
/ 1, but coffee mud particles mostly less than 0.016, while the powder
particles, mostly in 0.01640.075inl / 1 between (a difference of about 4 times).
Mud is harmful substances, an appropriate amount of powder is useful, it can
allow the cement to fill, the gap between fine sand, sand and easy to make up
the mechanism of poor shortcomings.
(6) artificial sand mixing concrete density, frost, permeability, suitable
high strength, high performance concrete pumping.
First step, first step, and what is the first to start crusher
Normal use guarantee jaw
crusher continuous work normally one of the important factors, improper
operation or do some exercises in the process of the careless, is often cause
equipments and personal accident important reasons. The correct operation is
strictly according to the provisions of the operation procedures.
Before the start of the preparation: in the jaw crusher, must on the
equipment before start full check carefully: check the broken tooth board wear,
adjusted the row of ore mouth size; Check for broken cavity ore, if there is a
chunk of ore, must be removed. Links are loose bolts; Pulley and the protection
of the flywheel outer garment is complete; The triangle leather belt and ties of
spring is the right degree of elasticity; Storage tank (or dry oil storage for
the amount of oil) oil filled with degree and lubrication system in good
condition; Electrical equipment and signal system is normal, etc.
In the startup crusher, should first start before oil pump motor and cooling
system, the three to four minutes, when oil pressure and oil, then start when
normal indicator of the crusher motors.
Later, after the launch of starting crusher over a period of time, the
workshop can start to run for ore equipment. The crusher of ore to should be
gradually increase until full operation.
Operation must be paid attention to, not even ore minerals packed with
crushing cavity, and give a crazy piece of the largest size should not be more
than 0.85 times width mouth to mine. At the same time, to defend excavator
shovel teeth of ore and rig drills have not broken objects into crusher. Once
found that these objects into the broken crushing cavity, and through the
machine row, ore mouth shall immediately notify the belt transport in time, lest
post out into the next paragraph crusher, cause serious equipment accidents.
The operating process, often pay attention to big ore blocks stuck to mine
the mouth, crusher if has stuck, be sure to use iron hook to flipping ore, if
the bulk ore from breaking out of need cavity, should by special appliance,
rigorous hand to work on these, lest produce an accident.
Ball mill came out during
the early 1800s; 1870 within the grinding mill, depending on the progression of
a uniform size marker rod mill; in 1908 it made a self-mill without grinding
mass media. 30-50 years the 20th hundred years,Jaw crusher, the us and Germany
allow us a roll bowl mill, roller mill as well as other vertical type disc
pulverizers. In 2010 is mine mineral processing equipment just as one essential
section of the ball is a bit more rapid growth and development of the.
Ore testing ore
beneficiation test work, according to the mineral processing equipment test
results to determine the degree of difficulty of the ore optional beneficiation
methods and determine the application sorting process, sorting conditions and
may reach the election Do not index. Not only can improve the efficiency of ball
mill grinding, and reduce energy consumption. The rise of the domestic mining
machinery industry is growing rapidly, the ball mill equipment can be considered
large-scale machinery and equipment in the mining equipment, manufacturing of
the cost of energy-saving ball mill is relatively high, hematite ball mill
equipment sales price The reason why such a high, mainly due to higher or more
complex internal structure of the ball mill equipment, high technical content in
the process of production and processing also led to the price of the ball mill
equipment.
To coarse grinding of materials inside first position as soon as the board
from the single compartment in the second warehouse, the warehouse lined with
flat lining, steel ball inside,rotary dryer, the fabric to help
expand grinding. Powder discharged over the discharge grate plate to accomplish
the grinding operation. Structural characteristics of ball mill through the
feeding part, discharging Department, Rotary Department, Transmission Division
(reducer, small transmission gear, motors, electrical control) along with other
major components. Hollow shaft with steel casting, lining Exchangeable, slewing
gear hobbing by casting method, our bodies inlaid canister liner wear, has good
wear opposition.
Ball mill energy consumption for the duration of work landed a lot of the
whole means of cement production, including power usage, integrated power usage
of cement is the reason about 60% -70%, so
how big is the force utilization of 'downsizing' is really a cement
technology workers unremitting goal. Grinding equipment selection, according to
cement and concrete properties (performance,mechanical properties, durability)
since the core, not simply the quest for the development procedure for reducing
power utilization, and also to satisfy the requirements of building
economical.
'Standard density is low, a great ingredient being compatible, well age, high
strength, assist in improving the longevity of concrete will be the high quality
of cement concrete.' As well, also ensures the roll-out of admixtures industry
view, 'admixture of cement industry is effective in reducing the necessary
particle certain to help the performance of cement plays a crucial role.'
The development of ball mill ultrafine technology is a heavy
responsibilities, but I believe in the near future we will have our patent, we
will overcome every difficults in mining machinery, our own plug will be on the
way of the mining machinery.The ultrafine technology of ball mill must be
brilliant tomorrow!
Information for testing and checking ball mill load
Ball mill load is the most
important parameter optimized in the Ball Mill Pulverizing System (BMPS) in
Thermal Power Plant. The accurate measurement of ball mill load is imperative
and difficult. The approach based on self-adaptive feature extraction algorithm
for noise signal and LS-SVM model is proposed to achieve this purpose. By
analyzing the sensitivity distributions of working condition transitions, the
characteristic power spectrum (CPS) is obtained. Then the self-adaptive weights
can be calculated based on the CPS and the centroid frequency. The extracted
features of the mill noise using this method show good adaptability to working
condition transitions.
No-load test is not installed in the media (balls, rods), and material
circumstances idling. Continuous operation of not less than 4h, generally run 8
~ 16h, according to specific circumstances. The longer the test, the main
bearings, gear tooth surface the better the research together.
Several no-load test should meet the following requirements:
1) the normal lubrication of lubrication points, there is no leakage.
2) mill main bearing temperature should not exceed 50 ℃.
3) mill smooth operation, no abnormal noise gear drive.
4) no loose liner and the transmission parts.
5) meet the maintenance requirements of running ministries.
When the required idle time, stop the mill running, carefully check all
working parts, liner bolts tightened to eliminate the defects found.
After passing through the no-load test, load test before proceeding. To
gradually feed the load test until the full load. After feeding in the normal
operation of 10 ~ 20 h.
Load operation should meet the following requirements:
1) work smoothly without periodic sharp vibration.
2) The main motor current no abnormal fluctuations.
3) the normal lubrication of lubrication points, the main bearing temperature
does not exceed 60 ℃.
4) mill working part of the bolt into the hole, the flange surface and the
seal with no leakage, leakage pulp and so on.
PX Series Sand Making
Machine incorporates three crushing styles; feeding style incorporates
material on material, materials on iron and falling at sides. Customers can
adjust the machines according to their own demand. PX Series sand making machine
realizes multiple functions in one machine, which is a big breakthrough in sand
making field.
Better quality and high efficiency:
1. Better design of the impellers reduces the resistance of materials,
highlighting passing through quantity of materials and crushing ratio, so the
efficiency is raised by 30%-60% compared to traditional machines.
2. Hydraulic system allows automatic uncovering, which reduces labor intense
and makes maintenance easier.
3. The mainframe adopts new techniques, which strengthens the machine
structure and tenacity, and ensures stable performance. The quality of the
machines is lift to a higher level.
4. PX Series crusher employs world advanced light oil anti-leakage device.
This saves the trouble of changing oil seal.
Excellent performance and long service time:
1.Special light oil lubrication systems ensures the temperature to be within
25℃;
2.Brand new automatic protection device provides the machine with vibrating,
oil filtering and warning system;
3.New type oil flitting system ensures the bearings and other transmission
system are not abraded and prolong their service time;
4.Choosing wearable materials prolong the service time of the machine by 40%,
so the cost is lower by more than 40%.
Different drilling and blasting strategies to improve blasting efficiency
have been evaluated．The results of each strategy were compared by means of
visual site investigation after blasting and calculating the total cost perton
ofthe broken rock． Site investigation had shown that the third strategy had
overcome the problem of unexploded ANFO．Unexploded ANFO was not seen after the
blasting．and also visual inspection showed significant decrease in the number of
oversize boulders．Another proper approach to evaluate different strategies is a
comparison of unit production costs．
The stone-making production line produced by our company can provide you with
all-around technical support. The whole line consists of vibrating feeder, jaw crusher, impact crusher, vibrating screen and belt conveyor. According to
specific requirements, we can combine different models together to meet various
needs.
Since the Objective is to minimize the production cost of per ton rock，then
the resulting cost of each strategy should be calculated．For that reason，the
comparable costs were estimated．Th ese are drilling cost，blasting cost and
secondary breaking(hydraulic hammer)cost．
In this quarry，the required size of broken rock should be provided before
loading for hauling．Th erefore a hydraulic hammer iS used to break oversize
boulders.In order to estimate the drilling and secondary breaking cost of per
ton limestone，the unit cost of driller and hydraulic ham er has been estimated
as $／h that includes ownership and operating costs．The results were 54．1l$／h for
driller and 44．46$／h for hydraulic ham er．Then the total working time of driller
and ham er had been recorded for each blasting．Since the production of each
blasting had been found by weighting，the unit production cost was calculated by
multiplying the total working time with the unit cost of equipment and dividing
the result by total production．The blasting cost consisted of the cost of
ANFO．The summ ary of the resuits is given in.
Hammer material and model of crusher affect each other
Crusher hammer abrasion condition is affected by numerous factors, such as
material prosperities (including feeding size, material type, hardness,
moisture, temperature), hammer linear speed and the gap between grid plate.
Therefore, it is very important to choose suitable material for crusher hammer.
After long-term practice and experience, the experts of Henan Hongxing has got
conclusions and given the following suggestions in the relationship between
crusher hammer materials and crusher types.
For large scale crusher with a feeding size of over 400mm, it is should be
installed big crusher hammer with a weight of 50~125kg. Owing to crusher hammer
needs to bear huge impact force and high manganese steel has high toughness,
Hongxing experts suggest that manufacturers had better choose super high
manganese steel alloy or alloyed high manganese steel to process crusher
hammer.
For small crusher with a feeding size of less than 50mm, it is should be
installed complex hammer with a weight of 15kg. Owing to crusher hammer needs to
bear smaller impact force, Hongxing experts suggest that manufacturer had better
choose medium carbon alloy steel to process crusher hammer, whose head is made
of high chromium iron and its handle is made of 35# steel or low alloy
steel.
For small and medium size crusher with a feeding size of less than 200 mm, it
is should be installed crusher hammer with a weight of less than 50kg. Owing to
crusher hammer need to bear relative small impact force, Hongxing experts
suggest that manufacturer had better choose high carbon alloy high manganese
steel or medium and low carbon alloy steel to process hammer.
For fine hammer with a feeding size of less than 100mm, it is should be
installed fine crusher hammer which is made of super high chromium iron. Owing
to high chromium irons hardness HRC60and its impact toughness ak8J/cm², the
service life of fine crusher hammer is improved by three to five times than that
of high manganese steel hammer.
Research on the role of Jaw crusher in limeston production line
According to the trial research of many kinds of crushers, Hongxing found out
that jaw crusher has the
following several significant features for limestone crushing:
a)The production capacity of jaw crusher is 600 ~ 800t / h, which is 25~40
times the capacity of the original limestone crusher. Hongxing jaw
crusher has solved the problem of high operating efficiency and no maintenance
time caused by low capacity for original limestone crusher.
b)Jaw crusher can crush large-sized limestone, and the maximum crushing size
is 1000 × 1200mm.
c)Fine final product size, only 2 ~ 15mm.
d)Good uniformity of two materials, and the mixing amount of desulfurization
limestone has greatly increased. The current mixing amount can reach 60%, which
can effectively reduce the cost of raw materials.
e)Low power consumption. 1 ton of limestone can save 1-2KWh/t power, and the
annual electricity savings will be 100,000RMB.
f)Effectively improved the labor intensity and work environment.
PE series jaw crusher of Henan Hongxing can be classified into primary and
fine crushing. PE and PEX series jaw crushers are widely used
for the primary and secondary crushing of various kinds of ores and rocks with
the compression strength no more than 320Mpa in mining, smelting, building,
highway, railway, water conservancy, chemical industry etc. With the feeding
size 125mm ~ 1020mm, jaw crusher is the preferred primary crushing
equipment.
As Chinas famous high-tech manufacturer of crusher, sand making machine, cement
grinding and wear-resistant materials, Hongxing has taken the lead in
manufacturing large crusher, stone crushing line, and large sand-stone production line. With
complete specifications, Hongxing jaw crusher can crush any materials that you
want to, and will be the best choice for you to crush hard and strong abrasive
rocks or recycling waste materials.
The advanced casting process of impact crusher shrinks needless defects
Traditionally, the impact
crusher is one of the crusher specially used in burning lime. Although the
impact crusher is with the characteristics of big crushing ratio, the wearing
parts is easily worn owning to the impact of the plate hammer, which causes the
increasing cost of wearing parts as well as the reduction of the crushing
amount. As with this phenomenon, Zhengzhou wear-resistant materials research
institute make efforts to upgrade the technology of the board hammer, impact
scaleboard and other components.
As we all know, the worn of the impact crusher plate hammer only appeares in
the side facing materials. When the rotor rotate at a normal speed, the feeding
materials will fall to the board surface of the plate hammer, it won't be worn
the plate hammer back and flanks, even the side facing material wear also
rarely. But when the rotor rotate at an abnormal speed, the plate hammer will be
worn easily.
The former board hammers are usually made from high manganese steel, which is
suitable for crushing materials with medium hardness, but when it crush such as
basalt, diabase, biotite, granite and other high hardness materials, the plate
hammer must have good corrosion resistance as well as high wear resistance.
Nowadays, the generally used plate hammer is mainly made by high chromium cast
iron, and high chromium content means relatively good toughness. However, high
chromium cast iron brittle and its high price promotes the continuously research
of new wear-resistant materials.
Reportedly, after many experiments as with the crushing characteristics of
impact crusher, reasonable application the most advanced nanotechnology, experts
of Zhengzhou Materials Institute has developed the new casting wear-resistant
materials whose sexual price is at present 1-2 times higher than the general
materials, which compared with similar imported products, semi solid extrusion
hypereutectic high chromium plate hammer has the advantages of high security,
high wear resistance, low in price and greatly shortened delivery cycle.
At present, the application of the semi solid extrusion hypereutectic high
chromium material is still in initial stage, and the wear plate hammer
manufacturers in China can be counted on one's fingers. However, once this kind
of wear-resistant materials become mature and widely applied, it will promote
the development of crushing machine especially the development of impact crusher
with strong wear-resistant material dependence
Pending mining machinery industry shows Bull Market
As a solid metal form, iron can be said that the worlds most commonly used
metal. Iron ore is the main raw material for industrial production. Because of
its great hardness, generally need to use the crusher to be broken.
Mining machinery mining resource development is an important tool for any
industrial raw materials are subject to mining machinery grinding process.
Exploitation of the mining process in the jaw crusher, impact crusher, hammer crusher, impact crusher
and cone crushers and other
equipment is essential in the machinery industry is also predominance, which a
range of equipment is more than the original ore into finished materials
industries must go through the necessary process equipment required. So the iron
ore market development, not only led to the development of machinery industry,
is leading the crushing equipment, crushers and other development.
Today, the price of iron ore has been less stable, the domestic demand for
iron ore in recent years is increasing. Shanghai, Tianjin and Beijing and other
cities in export-oriented steel consumption has reached the level of Japan and
other developed countries, but the real appeal is that the needs of Chinas
inland provinces and cities just beginning to rise. Currently, according to the
news that the Indian government may further increase iron ore export tax. If the
tax becomes a reality, the shortage of supply will directly affect the iron ore
spot prices, thereby pushing up the prices of iron ore. China will continue to
drive the next period of time, global demand for iron ore, iron ore market to
open up the west, so as to continuously push forward the development of mining
machinery industry.
With the national economy continues to develop, step by step process of
industrialization and increased urban construction, mining machinery demand for
technology has been growing, rising only by technology, can lead mining crushers
and other machinery industry constantly at the forefront of the state, more good
to sustainable development!
Dolomite is widespread and so is Dolomite equipment
Dolomite mining is important for industry. Dolomite is kind of carbonate
mineral which includes iron dolomite and manganese dolomite. Dolomite is the
main mineral component composed of dolomite and dolomite limestone. The dolomite
can be used in building materials, porcelain, glass and refractory after
dolomite crushing. In chemical industry, agriculture, environmental protection,
energy conservation, etc, the dolomite is in a great demand too and so the
dolomite crusher is widely applied. The dolomite is mainly used as the flux of
Basic Refractories and blast furnace. Here you can choose best dolomite crusher
machines for dolomite crushing.
Dolomite Application In Industry
Application in metallurgical industry: In the metallurgical industry,
dolomites are mainly used as flux, refractories, refining of metal magnesium and
magnesium compounds after dolomite mining.
The usage in building materials industry: Calcined dolomite can be processed
to make dolomitic limestone which is of good White, strong adhesion, coagulation
power, Fire-resistant, heat insulation. In these stages, dolomite crusher
equipments are needed. Therefore the dolomite is suitable for Interior and
exterior wall coating. The calcined dolomite can be used in Magnesium chloride
cement and concrete curing. After adding other brasque, they can be used for
flooring. Whats more, the dolomites can be directly used as building materials.
There are many dolomite crushing machines which can help broad dolomite
application in dolomite mining or quarrying.
Application in chemical industry: In chemical industry, the dolomite is
mainly used to produce chemicals, such as Magnesium sulfate, Light magnesium
carbonate, etc. Dolomite crusher can crush the stone to required fineness which
is suitable to production. Apart from all these above, the crushed dolomite
powder has been widely applied in agriculture, filler, etc. After dolomite
mining and crushing, we can use it to make more products which are often used in
various of industries.
The dolomite is mainly acclimated as the alteration of basal refractories and
bang furnace. Here you can accept beneath dolomite mining machines for dolomite
grinding.
Ball comminute for dolomite powder: Ball comminute is the aboriginal cutting
mill. It is acclimated in dolomite cutting plant.
Raymond comminute for dolomite bean grinding: Raymond comminute is broadly
acclimated in dolomite crumb assembly line. It can bullwork dolomite into crumb
with 200 mesh.
Dolomite mining is important for industry. Dolomite is affectionate of
carbonate mineral which includes adamant dolomite and manganese dolomite.
Dolomite is the capital mineral basal composed of dolomite and dolomite
limestone. The dolomite can be acclimated in architecture materials, porcelain,
bottle and adverse afterwards dolomite crushing. In actinic industry,
agriculture, ecology protection, activity conservation, etc, the dolomite is in
a abundant appeal too and so the dolomite altercation is broadly applied.
The acceptance in actinic industry: In actinic industry, the dolomite is
mainly acclimated to aftermath chemicals, such as Magnesium sulfate, Light
magnesium carbonate, etc. Dolomite altercation can drove the bean to appropriate
airiness which is acceptable to production. Apart from all these above, the
ashamed dolomite crumb has been broadly activated in agriculture, filler, etc.
Afterwards dolomite mining and crushing, we can use it to accomplish added
articles which are generally acclimated in assorted of industries.
Impact crusher is
based on the principle of work, that is, by naming the fragmentation of the
principle to material back smash, is a better than jaw crusher more fine
crusher equipment in the production line of stone, mainly used for homework, and
finely jaw crusher for cooperation and broken. The counterattack crusher in the
process to have the following five aspects of performance advantages.
A)The impact crusher handles a large quantity of wet material more effective.
Effectively prevent the material jam.
In the treatment of the material moisture too big when, the feed of the chute
impact breaker and
fight the board can be equipped with heating device, prevent the adhesive of the
material. The impact breaker need not equipped with sieve plate can effectively
avoid the block at the bottom of the phenomenon.
B)The impact breaker applicable materials hardness more extensive.
The impact breaker plate hammer the mechanical clamping firm structure is
scheduled for rotor, when with the rotor turns of great inertia. Relative to hammer crusher (hammer a
trailer state), the impact breaker rotor has more momentum, and adapt to the
more solid material, broken and the energy consumption is low.
C)Can be easily adjusted flexibly the grain-size, and the adjusting range is
extensive.
Counterattack type adjust hammer the grain-size, such as the rotor speed
adjustment, adjust counterattack board and grinding chamber clearance, etc.
Clearance adjustment can be through the mechanical or hydraulic on the
adjustment, the hydraulic governing system can easily through the on-site
operation button or control system to accomplish the clearance adjustment.
D)The vulnerability of small, high efficiency in metal wear.
Counterattack type broken stone machine wear plate hammer in only appear in
to meet the material side. As the rotor speed normal, feeding will fall to plate
hammer surface, the back of the plate hammer and side are not be wear. Even if
is to meet the material this side wear are few. And bottom grinding bar is easy
to change. Crusher metal utilization can be as high as 45% to 48%.
E)The impact breaker spare part replacement is simple, maintenance costs
less.
The impact breaker rotor just installed six plate hammer, with heavy industry
design of special tools can be convenient to replace the replacement of the
plate hammer, a set of plate hammer only one flight time. The bottom of great
change grinding chamber is only need dozens of minutes, and greatly reduce the
maintenance and maintenance of time and money. The five advantages of impact
crusher to let it become a counterattack crusher indispensable stone production line and the
sand production line equipment.
Stone crushers
are commonly used on construction sites and in stone quarries to crush large
stones into smaller pieces. Crushed rock has a variety of purposes but is often
used to make level surfaces, provide drainage under roads and buildings or to
create gravel roads. There are three types of crushers; sometimes multiple
crushers are used to achieve the desired size. Jaw crushers crush rock
by closing two walls against the large stones several times. Roller crushers are
often used as secondary crushers; rocks are fed between two rollers that crush
the rock. Cone crushers squeeze
rock through spinning grinders.
1)Inspect all the parts of the rock crusher before operation
and make any repairs or add lubrication where needed. Check for broken teeth,
bolts and belts and make sure there are no obstructions in the crushing
cavity.
2)Turn on the engine of the rock crusher and listen to make sure that it is
operating properly.
3)Start the crushing mechanism of the stone crusher to make sure all
components are operating smoothly. Shut down the machine and make repairs where
necessary.
4)Set the crusher up under a conveyor belt that can carry crushed rock to a
pile or dump truck.
5)Adjust the opening of the stone crusher to accommodate the size of the
stones you will be crushing. If you leave the opening too wide, your machine
will be performing excessive work, leading to unnecessary wear on your stone
crusher.
6)Feed large stones into the cavity of your stone crusher with a crane or
conveyor belt and allow the machine to do the work.
7)Feed crushed stones into a secondary stone crusher to achieve smaller
rocks, if desired. If you use a jaw crusher, you may need to
use a roller crusher to produce gravel-sized rocks.
8)Turn off the power to the machine and inspect its parts to make sure there
are no stones lodged in the stone cavity.
Stone crushers are
commonly used on construction sites and in stone quarries to crush large stones
into smaller pieces. Crushed rock has a variety of purposes but is often used to
make level surfaces, provide drainage under roads and buildings or to create
gravel roads. There are three types of crushers; sometimes multiple crushers are
used to achieve the desired size. Jaw crushers crush rock by closing
two walls against the large stones several times. Roller crushers are often used
as secondary crushers; rocks are fed between two rollers that crush the rock. Cone crushers squeeze
rock through spinning grinders. To ensure longer life of impact crusher, the
user should have a good repair and maintenance for it. And if impact crusher is
maintained properly, its service life will be prolonged 30%~50%. And how to
repair and maintain impact crusher?
1) Before being put into operation, impact crusher needs to inspected
carefully, for example, whether fasteners is loose or not, whether
wear-resistant parts should be replaced or not, whether lubrication and cooling
system is ok, etc.
2) Impact crusher should be started in the sequence as follows: dust removal
equipmentconveying equipmentcrusher and feeder. These machines should run
without load firstly, after making sure there is no abnormal condition, these
machines can run with load.
3) In the process of running, you should pay more attention to inspecting
lubricating system, and adding or replacing the lubricating oil regularly. The
temperature of rotor-bearing should be below 60 °, the maximum temperature
cannot exceed 70 °.
4) When stopping machines running, it should be according to the sequence of
production flow chart, which is in contrary to the starting sequence: Feeder has
to be stopped firstly, when materials in crusher is discharged completely, then
main motor and final product conveying equipment system can be stopped.
5) When the final product size is too big, users should check the wear
condition of hammer and impact plate, and the clearance between them.
How to make good inspection when crushers are running
Crusher equipment at work is running, the operator should seriously carry out
inspection work. Avoid the following points:
1). Prohibit individuals not wearing protective equipment: This is because
the working process in the crusher will produce noise and pollution, long-term
if I cause any harm. While wearing protective equipment can reduce our risk.
2) prohibits the instructions do not look at: equipment purchase to
familiarize yourself with equipment, to avoid unnecessary accidents.
3) Check whether there is something inside the machine: crusher run before
the first check whether there is a good ore crushing cavity or other things.
Because the crusher does not allow load to start, start the load will cause
power trip or damaged parts.
4). Prohibit the use of unqualified power.
5). When prohibition does not turn off power supply: the process of using the
device if a power outage, remember to be turned off, because suddenly, then
calls may be some harm. In addition, after the work is also necessary to develop
the habit of turning off the power.
6). Machines to do the maintenance work: Crusher is a kind of large-scale
equipment, long-term use will cause some wear and tear, so do the regular
maintenance of the machine.
Comply with the above point, to ensure the normal operation of the machine is
also able to protect its own security, to make equipment run more
efficiently.
Compared with Jaw crusher Compound crusher is also important for railway construction
And the role of the crusher compared to the single, composite crusher has
more powerful features. For those who work more complicated, many kinds of
materials for large-scale concentrator stones factory, it must be equipped with
a variety of different materials crusher to meet the crushing demand. Composite
crusher is developed on this basis made to fit a variety of materials, while
the advanced machines, complex task is made easier.
Composite crusher in widespread use in high-speed railway construction. Face
of Chinas high-speed railway construction peak arrival composite crusher demand
is particularly strong. However, high-speed railway construction, aggregate and
concrete sand and gravel aggregate demand is relatively high, and to meet the
needs of the industry composite crusher with capacity of this large-scale
enterprises at least a decade or more. Henan Hongxing machine of composite
crusher units have been widely used in various provinces in the construction of
highways and high-speed railway applications, is essential national
infrastructure equipment.
Relative to the ordinary crusher, the crusher complex there are several
advantages: reduction ratio, the maximum time you can not even hammer, the
impact of liner wear; no screening of the set, broken high water content, clay a
large quantity of materials is not easy to plug; unique rotor structure,
crushing the material, the rotor body almost no wear and tear; bearing
horizontal layout, long life, high temperature materials can be broken.
These features are combined with several characteristics of a single
integration of the breakers made of, is the excellent combination of
technology, is technology.
Jaw crusher is a famous
mining machinery machine widely used mining, road, railway, chemical industry,
etc. It was mainly make up by six parts. The first part is rack and it is a
walls rigid frame with the top and lower surface is open. Used for supporting
partiality axis and to bear the reaction of crushing materials. Generally
inblock cast by cast steel. Small machine can also used high quality iron
instead of cast steel. But the rack of large machine need cast subsection, the
process is more complex.
The second part is jaw plate and side guard plate, fixed jaws and dynamic jaw
were all made up by jaw bed and jaw plate. Jaw plate is working part, fixed in
the jaw bed by bolts and wedge iron .The jaw bed of fixed jaw is the front wall
of rack, the jaw bed of dynamic jaw was hanging in the axis. So the all need
enough intensity and stiffness to sustain the counterforce of crushing .
The thired part of jaw crusher is adjusting device , adjusting device divided
into wedge block type, plate type and the hydraulic, etc. Generally uses the
wedge block type.
The fourth part of jaw crusher is flywheel, the flywheel of jaw crusher is
used for storage trip energy of dynamic jaw, then used for industrial, make
mechanical work tend to equality.
The fifth part is transmission parts, eccentric shaft is the principal axis
of jaw crusher, it is can under great bend torsion, usually manufacturing by
high carbon steel.
The last main part of jaw crusher is lubrication device, eccentric shaft
bearing usually adopts concentrated circulation lubrication.
When jaw crusher crushing cavity things (such as crushing in an iron ball,
iron, etc.), for the protection of the equipment is mainly parts are not damaged
and use as crusher insurance after thrust board components. With cast iron plate
after general thrust moulds overall, in which a trough of some holes open or to
lower the cross-section intensity; Also can cast two, then use screws (or
rivets) of connecting thrust board, combined. When not broken objects into
crushing cavity, equipment overloaded and huge breakage force to thrust plate
lead to thrust board broken or combination thrust board screw, machine cut to
stop work, have insurance effect.
These knowledge may in equipment instructions say not so detailed, so the
user is in the purchase equipment, installation debugging when must learn more
with crusher experts, mastering jaw crusher insurance and discharging
adjustment, stable production can be better.
Big Time for Sand Making Production Machinery Industry
Sand is widely used in highway construction, concrete making, etc. As the
field of industry application gradually expanded, the gradual application of
natural sand work more and failed to keep pace with the various sectors of
modern world development needs. For the most part, machine-made sand is produced
to meet the great needs. Here you can learn more about definition of
machine-made sand and its wide applications.
Sand is also called manufactured sand, which was produced by crush the cobble
stone or other stone into sand by sand making machine. As
the basic materials of concrete, cement mortar of architectural sand, Successful
application of artificial sand is an indisputable fact that a large number of
engineering practices (including the Three Gorges Project) has demonstrated the
possibility and necessity of using sand.
Machine-made sand production line is an equipment which specializes in
producing building sand and stones. The granularity of sand is even, great in
compressive strength, which is more fit the requirement of high standard
building stand than nature sand, and sand produced by hammer crusher; it links with
feeding machine, jaw
crusher, PCL straight impact
crusher, heavy vibrating screen, high
efficient sand washing
machine, as well as belt
conveyor to form a production line. The production adopts high speed
rotation to throw out the sand material by linear velocity of 76m/s, clash on
wearing plate, forming the crushing principle of stone crush stone, and stone
crush iron, which ensures the whole technique flow discharges material smoothly,
reliable running with high efficiency and energy saving, that saves energy by
50% than traditional equipment.
There is scarcity of natural sand due to heavy demand in growing construction
activities which forces to find the suitable substitute. The cheapest and the
easiest way of getting substitute for natural sand is by crushing natural stone
to get artificial sand of desired size and grade which would be free from all
impurities.
Domestic market from the point of view, the crusher in this industry there
are numerous small and medium enterprises, these enterprises have done their
best in a competitive process from the brand, quality, price and various factors
to consider, to win more users. 'Quality is the life', this sentence description
of the important role of quality in the enterprise survival and development. The
12th Five-Year Plan for China's mining machine industry has brought great
opportunities, the construction of a number of high-speed rail to the crusher to
usher in a new room for growth. Some of the problems some time ago, high-speed
rail construction slowdown in the pace of railway construction, but the degree
of advance. To do so is to better ensure the project quality, safety
considerations, production and property in the majority of the people
responsible. A few years ago, faster high-speed rail construction. The
high-speed rail on the countrys economic development is a good thing, but the
railway construction investment project must be given careful consideration to
better adapt to economic and social development. More scientific considerations
on the speed and timing of high-speed rail construction.
How to ensure minimal equipment failure rate for cone crusher
Equipment failure rate is minimal and the maintenance of the equipment in
later period is extremely important. Mine must be allocated to the plate in the
middle , forbidding the mine goes into the crushing cavity directly. Because it
is easy to make crusher overload and the liner wear unevenly .
The condition of giving mine:
a. Mine evenly was distributed in the crushing cavity through the
distribution plate.
b. Feeding ore can't higher than the level of rolling acetabular wall.
The crusher to the maximum size of giving mine couldn't be allowed equal to
the mine mouth size ( the maximum size of giving mine = 85% to the mine mouth
size) ,or they will lead to :
a. Crushers yield reduced.
b. Damage to certain parts of the crusher.
2. Crushers are not allowed to start overloading , because the overload will
start the accident.
When the crusher will finish the work,at first we must stop to the mining
machine . When crushing the mine goes into the crushing cavity after discharge
,it can make crusher stop.Crusher should be always checking the pressure and
hydraulic locking system work station , once we identify problems and handling
in time .
3. Crushers' output
Crushers' output, and feeding methods , feeding degradation, platoon ore
blocks degrees size,mechanical properties, temperature and so on . Varies
greatly,the manufacturer of a given output is sketchy the quantity in the
specified conditions.
4. The replacement of rolling acetabular wall
Rolling acetabular wall with U shape screws embedded in the adjustment of the
ring, both between infusing zinc alloy and making closely. New installation or
the replacement of rolling acetabular wall, in the work six to eight hours we
should check for tightening situation ,and once again tighten the u-shaped
screw.
5. Gear mesh
The circular plate is worn by friction , affecting variations in the
clearance of the gear . In order to ensure the proper meshing gears must be
supplemented additional gasket in the bottom cover , the thickness of the gasket
should be equal to the size of wear of the circular plate.
6. Bowl-shape bearings and sealing device
When we install the bowl-shape bearings ,we should notice that we don't use
wire rope to avoid break block oil ring( use hardwood and other materials to
support in the wire rope between ).
7.When we assemble the cone
crusher , supporting spherical surface should be scraping to ensure crushing
cone and the bowl-shape spherical surface which should be keep 0.35-0.5mm
annular gap in excircle contact with the inner ring.
8. Cylindrical bushing and the frame body collaborates for the third
transition . In order to prevent rotation of bushing , injecting zinc alloy into
the tank upper bushing again . When new bushing should be replaced,we should
configure a frame body that the actual size of the preparation , as a long
period of work ,loading and unloading,the crusher will change the relationship
with cooperation. If the gap is too large,it will lead to rupture bushing.
9. Spring
The role of the spring : When hard detritus goes into the crusher ,the spring
can protect material from damaging the cone crusher , so the spring pressure and
crusher crushing force can adapt each other. In the normal working hours the
spring dosen't move , only iron blocks fall into in the crushing cavity which
makes the crusher overload,happening spring is compressed phenomenon.
10. To the cone crusher' part of exposed rotating , we should add
shields,which are owned by the user.
The Hospital for remedying the blockages of mobile crusher
The Hospital for remedying the blocked crushers
Mobile crushers
are used in a wide range of industries, including quarrying, ore processing and
recycling of demolition waste. This guidance is for all those with
responsibilities for the operation of mobile crushers,
including contract managers, supervisory staff and operators of these machines.
It covers the safe operation of the mobile crushing operation and includes
guidance on clearing blocked crushers.
This guidance cannot cover every risk and is not comprehensive. It does not
attempt to detail individual machinery safety concerns, but will only highlight
those key matters of concern.
Action when a crusher becomes blocked
Have a nominated person to supervise the activity and call for assistance as
necessary
Stop the feed at the earliest opportunity
Remove excess material by mechanical means where possible before the cause
of the blockage can be dealt within
In some cases, however, an amount of removal by hand will be involved and
when this occurs the crusher and associated plant must be stopped and isolated
Manual removal should only be carried out by suitably trained and competent
persons
Hazards encountered may be:
Poor or difficult access
Accidental start up of feeder, crusher or adjacent plant
Being struck by material from the feeder, chute or projected material
The movement of any material present inside the crusher
Slipping and falling
Manual handling of rocks and equipment
Unexpected movement of crusher components
Damaged electrical cable
Noise
Stored energy from electrical, hydraulic, compressed air, mechanical sources
and gravity
Unsafe placement of material removed from the crusher.
Clearing blockages
Bridged crushers
The preferred method of clearing a bridged crusher is by the use of a
hydraulic arm (typically a360 excavator fitted with a quick hitch bucket
attachment and either a static pick or a hydraulic hammer available).
Depending on the result of your risk assessment, clearing out a bridging
blockage with a hydraulic arm (with pick attachment) may be carried out with or
without the crusher still operating.
Use of cranes (including manually operated lifting tackle), Lifting
and Slinging
When hydraulic arms are not available and cranes slung with hooks have proved
ineffectual, other methods are necessary. When it becomes necessary for a person
to enter the crusher to position hooks or slings, the crusher and feeder must be
stopped, isolated and locked off (in accordance with manufacturers/suppliers
instructions) and safety harness worn.
Other available options
Where other options are to be considered they should be subject to a detailed
and thorough risk assessment. The crusher should be shut off and isolated before
considering the use of bars and hand hammers. Careful consideration should be
given to the risk of large pieces of feed material moving and causing trap or
crush injuries. Wedges should not be used due to the risk of them becoming a
projectile (This has caused fatalities in the past). Other options, which
require more specialist expertise and competence, include: gas or chemical
expansion, hydraulic ramp plates, permanently mounted hydraulic breaker (may
include the use of closed circuit television CCTV to assist the operator), use
of explosives.
Mobile crushers are versatile pieces of equipment with many uses. A properly
planned operation will be efficient, safe and productive. A poorly planned
operation will be unproductive, dangerous and inefficient.
Good working circumstance also affects the production efficiency
When you are thinking of moving around your desk or choosing a new place to
work, it may be a good idea to keep some of the following things in mind. Do a
quick check around you and with a couple adjustments you should find it easier
to work and you will be able to work longer and more efficiently.
Of course, in mining industry, to create a good working circumstance is not
only important for working safety, and also helpful to raise the production
efficiency. Magnetic separator
is used for removing iron powder from the recycling powder particle and magnetic
separator are widely used in wood, mining, ceramics, chemical, food and other
industries. Magnetic separator is suitable for the separation of materials with
a size below 3mm such as magnetite, pyrrhotite, roasted ore, ilmenite and so on.
It is also widely used for the iron removal in coal, non metallic minerals,
building materials and other materials, which is the most widely used and with
high universality machine in the industry. Now, let's give a conclusion on how
to build a more perfect working environment for magnetic separator.
The working environment of magnetic separator has always persecuted many
manufacturers. As we all know there will produce a large number of powdery
objects in the working of the magnetic separator, these objects floats in the
air because of the vibration of the magnetic separator. The floating powder
cause great harm on the surrounding environment and also have destruction on the
surrounding ecological environment as well as cause physical harm to workers in
the interior, which not only affect the living environment of people but also
reduce the production efficiency. In order to solve these problems, Henan Hongji
machinery specially gives some solutions and the details are as follows, hoping
which can help you:
At first, let's analysis how is the working environment of the magnetic
separator is destroyed:
1. The separator will produce great noise pollution in the process of its
operation;
2. In the separation process of magnetic separator, the crushing ore material
is sprayed in the air forming a powdery particles which do harm to the physical
health of workers;
3. And in the collection of fine ore and tailings, the operation will cause
the ore material flying as well as pollute the air and also result in great
waste of resources.
The solutions: in the design process of magnetic separator, design the
discharge device of magnetic separator to closed type so as not to cause
material flying in the air, and at the same time improving the engine and using
the new magnetic separator engine equipment can effectively reduce noise
pollution.
Henan dominates the field of China crusher markets
In recent years, with the rapid development of the economic in China, the
energy demand mushroom, the rapid development of large scale infrastructure,
highway, railway, and real estate projects led the processing and production of
sand, gravel and other building materials, which makes the need of mining
equipment especially crushers soar. Henan is one of the biggest mining machinery
manufacturing in China as well as one of the biggest is China's largest
production base of the crusher, which is the mainstay in the crushing equipment
production and has gathered numerous crusher manufacturers in mechanical
field.
The crushing machinery industry in Henan was arisen early in 1980s and
reached a prosperity period at the beginning of 1990s. At that time, the access
threshold of producing the mining machinery is not high, so crushers
manufacturers mushroomed as bamboo shoots after a spring rain. The prosperity of
crushing machinery industry didn't promote the benign development of this
industry, but led to more and more problems. Market gradually saturated and the
disordered competition of the crushing machinery industry brought a heavy blow
to the development of the whole industry.
Entering new century, the crushing machinery industry in Henan entered the
high-speed development period once again with the rapid economic developing, the
industry once again entered the high-speed development period. However, the
flourishing of the market also led the emerging of many nonprofessional
manufacturing enterprise, the production workshop of these enterprises are with
neither professional production equipment nor professional design team and
professional technical staff, so the product quality is not guaranteed.
At present although there are many business enterprises in crushing machinery
industry, among which manufacturers with real professional production
qualification can be counted on one's fingers. These large manufacturing
enterprises are all survival from the most intense mining machinery industry
competition in the last century, and now they all have the scale of production
capacity, diversification of products and keep the technology developing
synchronization with the international. And the most important is that they has
accumulated a large number of stable customer resources and achieved the trust
of customers in the past ten or twenty years' developing.
Let us to find the pathogeny and solutions for magnetic separator
The magnetic separator
motor overheating and sound not normal . Caused by the above reasons,
including:bearing bad lubrication or severe worn , fan leaves fall off or wear ;
Switch line contact undesirable , or disconnected to run single-phase ; voltage
is too low.
In the series of magnetic ferrite magnets and general use of the sr ndfeb
magnets. One ndfeb magnets chemical stability is poorer, in magnetic drum in the
humid air,Cement rotating
dryer easy appear surface oxidation gradually layered spalling phenomena.
good chemical stability, strontium ferrite magnets generally with the epoxy
resin bond into magnetic fixed set in magnetic of, there are also magnetic piece
of easy falls off phenomenon. So whether strontium ferrite magnets are necessary
or magnets for fixed.
Magnetic separator noise is not normal in normal operation , the cylinder was
jammed by obstacles and even the cylinder can not rotate , the bottom bin
vibrate . Caused by these reasons include : magnetic separation was jammed by
the bottom bin of object , or magnet fell off , causing the cylinder rattled
,serious causing cylinder of epidermal was lacerated . At this time we should
shut it down for maintenance and troubleshooting . Reducer overheating.Its main
causes : lack of oil ,or oiliness is bad; gear and worm wear serious,or meshing
is bad; bearing lubrication is bad ,or badly worn .
Magnetic separator of magnetic field intensity becomes weak. The major
reason,including : the temperature is too high ; sun exposure ; acid and alkali
corrosion. You can use gaussian measurement meter.
Magnetic separator is composed of foundation bed ,the magnetic system under,
the rotating cage, the magnetic system above, hollow shaft,concentrate hopper
other rotating equipment . Mounting base should to make hollow bearing seat as a
criterion to measure the elevation and level of degrees. The positioning of the
magnetic system under should make mounting base as the criterion . Turn cage
,next step is the upper and lower magnetic system must be accurate adjustment of
the gap ,which limits of deviation of 0 +1 mm.
The new development direction for the worn-out parts of ball mill
Cast iron in casting process is very common in the process of cast iron
products. For its quality problem is be worthy of attention, so we must learn
about the effects of several factors of cast iron pieces of ball mill.
The first is the process operation.Control and check the quality of the
casting in the manufacturing production.
The second is to possess a reasonable casting process.
The third is the quality of raw materials in the casting. If the quality of
the raw materials dose not match the standard, it will make the iron casting
generate defects, which effects of appearing quality and internal quality or
even make the cast iron scrap.
In recent years, wear-resistant casting industry has developed continuously
with the development of our national economy. And it now has become an
independent industry.
At present, due to the inevitable and objective wear problem in the
development of the industry exists in reality. Therefore, as long as the basic
raw material industry develops, the needs of casting wear-resistant parts will
be also continuous in supply. What's more, as the ceaseless progress of industry
and the requirements of energy saving and environmental protecting, the quantity
and variety of the wear-resistant parts in demand will continue to expand. The
wear-resistant castings industry will be more prosperous and have a stronger
vitality. Therefore, we call the wear-resistant casting industry an' immortal
industry'. Welding power source should be able to guarantee the long time
continuous and stable work. The operation machine can realize automatic welding
gun moving vertical and horizontal direction. The positioner can flip horizontal
rotation and vertical. Dust removal system is capable purify the welding fume
releasing by automatic welding gun.
Rolling bearing machine also like a coin with two different sides
Rolling bearing and sliding bearing are the most commonly used bearing
equipment. Rolling bearing equipment is a very wide range of industrial
application of a bearing product , which consists of the outer ring , inner ring
, rolling elements and cage components ,owning good starting performance and
load carrying capacity , applying to machine tools , automobiles, railways and
other industrial machinery ,civilian instruments. Rolling bearing equipment is
an important modern machinery and equipment supporting basic parts.
Comparing with sliding bearings , rolling bearing radial size is relatively
large , the noise , vibration and other aspects of performance level is
ordinary, but the load carrying capacity and starting performance is excellent,
which is easy maintenance and operation results reliable . The following is the
advantages of rolling bearing .
The rolling bearing equipment's fault phenomenon maily includes : bearing
installed parts temperature is too high,in the running bearings have noise, and
rolling bearings wear.
a. Rolling bearing equipment temperature is too high
In the organization operation, installation of bearing parts are allowed to
have a certain temperature, when the hand touched institutions shell, should not
feel hot to normal, otherwise it indicates that bearing temperature was too high
. Bearing temperature is too high for two reasons :oil quality does not meet the
requirements or deterioration , lubricant viscosity is too high ; body assembly
is too tight ( lack of space ); bearing assembly is too tight ; bearing ring is
rotate on the shaft or shell rotation ; load too large ; rolling bearing
equipment can keep the frame or rolling element crush.
b. Rolling bearing equipment noise
Rolling bearing equipment allows a slight noise in the work operation, if
noise is too large ,unusual noise or crash,which indicates that the bearing is
faulty .
Rolling bearing equipment noise is more complex reasons , one is the bearing
inner and outer rings which coordinate with surface wear . Because of this wear
and tear, damaging to the relationship which is bearings and housings , bearings
and shaft ; leading to the axis deviate from the correct location,and generate
abnormal sound in the high-speed movement . When bearings fatigue , causing
peeling off the metal surface ,which can lead to increase the bearing radial
clearance so that the generation of abnormal sound . In addition, the lack of
bearing lubrication ,the formation of dry friction,crushing and other reasons ,
which will have a bearing abnormal sound . Rolling bearings wear loose ,which
lead to frame wear loose,producing abnormal sound .
c. Rolling bearing equipment wear
Rolling bearing equipment wear is common problems in the proces of using
equipment ,which is mainly caused by the characteristics of the metal shaft :
Although metal has high hardness,the yield is poor (can not recover after
deformation ), poor impact resistance , fatigue resistance is poor, which can
easily lead to adhesive wear , abrasive wear , fatigue wear, fretting wear,etc .
Most of the rolling bearing equipment wear is not easy to detect ,and only
appear : the machine is too high temperature , beating amplitude is too big,
abnormal sound ,etc.,which will cause notice . When they are found above
problems, most of the rolling bearing equipment are worn , resulting in machine
downtime .
Advantages of rolling bearing
a. Rolling bearing structure and working principle of the movement can ensure
that its coefficient of friction is low, having better mechanical efficiency .
In the process of mechanical equipment operation , it can maintain low power
consumption , and have a good starting performance .
b. Rolling bearing equipment owns a good accuracy and rotate speed ,at the
same time it can meet the operation requirements of a variety of mechanical
equipment . In the device operation rolling bearing suffers the low friction
,low wear, so it has a longer service life . In the part of some products about
rolling bearing , which can achieve self-aligning feature and more widely to
industrial needs.
c. Rolling bearing structure is compact , small size , light weight, easy
installation and removal . Rolling bearing various components are achieve the
standardized size , which is not only conducive to the production of rolling
bearings but also conducive to the exchange each other , which make it easier to
repair and maintenance.
d. Rolling bearing is most use the steel as the main material, adding
standardized , serialized component design ,which is more conducive to
large-scale industrial manufacturing, quality assurance and stability .
Pendulum feeder is a kind of feeding machine that is able to deliver blocky
and granular materials from storage silo to receiving device evenly, regularly
and continuously in the production process.Pendulum feeder has the
characteristics of simple structure, reliable operation, easy adjustment and
installation, small size and the closed type of shell to prevent dust
pollution.
Pendulum feeder is suitable for chemical industry, mining, metallurgy,
construction, mineral processing, coal and other industries. It is not suitable
for delivering the dry power or materials of big size, otherwise, it may appear
the fly-ash pollution or the discharging blocking.
Adjust eccentric gear pin on the eccentricity of the eccentric ,which can
change the length of the itinerary of the swing bottom,adjusting the volume of
feeding with a wide range, adjust the height of the discharge port gate ,change
the size of discharge hole, which be able to Feeding precise adjustment.
The pendulum feeder is not suitable for delivering the dry powder or big
grain material, it may result in the dust pollution and the jam of the
discharging holes. The chute feeder can be installed on the ground or onto
discharge port of ore bin. The chute bottom plates do the reciprocating
movement, the movement frequency is 20-60 times/min and the stroke is 20-200mm.
Stroke can be adjusted by the eccentric wheel; the eccentric throw is half of
the stroke. According to experience of some mine sites, the eccentric throw
should no less than 30mm for cohesive ore. The chute width is 2-2.5 times of
maximum feeding granularity. The biggest chute feeder can supply ore with
granularity less than 500mm. the most common specification is 980*1240 chute
feeder, with feeding granularity between 350-0mm, which is the best partner of
400*600 jaw crusher.
All kinds of rules for operating and protecting a cement mill
Cement mill maintenance is
an extremely important regular work , it should be match closely with the
machine operation and maintenance , there should be full-time personnel on duty
checks.
Cement mill maintenance
1. Bearing . Crusher bearings shoulder all the load bearing of machine ,
great relationship between good lubrication and the bearing life, which directly
affects the life of the machine and the operation rate , and thus required to
fill the oil must be clean , seal must be good , the cement mill the main oiling
Office: rotating bearings , roller bearings , all the gear , activities bearing
, sliding plane.
2 . The newly installed wheel band is easy to loosening ,we must always be
checked.
3 . Note that various parts of the cement mill is working properly .
4 . Pay attention to check the wear easily parts of degree of wear , and at
any time pay attention to replacement of worn parts .
5 , Chassis plane of putting the activity device ,removing dust and other
objects in order to avoid the machine when the material can not crushed ,and the
bottom shelf can not move up and down in the activities of the bearing, so as to
cause serious accidents.
6 . The bearing temperature rises ,we should be immediately stopped and
checked cause of trouble to eliminate them.
7 . If sound machine produces impact sound,the turning gear operation should
be immediately stopped ,checked , and eliminated .
Installation and commissioning
1. The equipment should be installed in the level of concrete
foundation,using stone bolt to fix.
2 . Installation should pay attention to the main body and level of the
vertical.
3 . After installing, checking for various parts of loose bolts and the host
doors is whether tighten, if have, tighten.
4 . According to the power of the equipment configurations power and control
switch.
5 . Check finished, empty load test, test normal can carry on production.
Our crushing machines resolve the industrial waste and waste recycle
At present, the reuse problem has attracted significant attention from all
walks of life. For example, many local governments are actively appealing for
crushing the construction trash and turn it into renewable building material and
reuse it; national policy also formulates some relevant policies and measures to
protect the environment from construction waste pollution and some ministries
and commissions have listed its reuse into the twelfth-five years plan. Reuse
and resourcation disposal will be an irresistible trend and an inevitable move
that conforms to the times development. However, it is a system project which
will get involved many management departments, so that in the current
circumstances, everyone pays attention to it, but joints forces have not formed
yet.
Demand is always the guiding of equipment manufacturing companies. So with
the emerging of trash disposal, mobile come crusher also arises at the historic
moment and constantly improves in the developing process. But because this
industry lacks standardization, the machinery quality is uneven, there even is
the condition that the mobile impact crusher
just reached the production site, the tyre gets loose.
In recent years, there has come into being a new favorite in the crushing
machinery industry, the mobile breaking station, which is able to do the special
mobile crushing according to the actual spot design and eliminate the
limitations of crushing site, surrounding and complicated basic configuration,
so that it not only can break more conveniently and highly efficiently, but
realizes the effect of reducing the occupation of land and recycling
construction waste. However, with the more and more obvious situation of the
building waste surrounds the city, its disposal and recycle is not just turning
waste into value and solving the land occupation problem.
As for the government, he should give more support to its disposal, no matter
on the capital or the policies; he should give some degree of guarantee, because
he start the beginning and walk to some distance is very important to its
development; as for the machinery manufacturing companies, equipment safety
always comes the first, and secondly how to as much as possible satisfy the
demand of high efficiency and low energy consumption is also very important.
There are many companies manufacturing disposal equipment, and the types are
jaw crusher and mobile cone crusher. What has to
mention is that the machines has be close to the international advanced level
and has gained excellent application effect. So whether the company can grasp so
superior market opportunity still need the customers to choose the best devices
and timing.
One machine in Cement Production Industry - Cment Packer
The cement packing machine is mainly used for packing cement in bags, or
other fluit powdery material's bagging work. Except manual sidekick, baggs can't
fall off unless the bulking load reach centain amount. The machine can stop
immediately when bag happens to fall of suddenly. It can charge load without
compressing air, which reduces the packer damadge caused by damaged pneumatic
components. Most of the cement packer is divided into fixed and rotary.
The work of running processes
1). Start the operation steps: The circular telegram - starts the belt
fastener - start the packer - start the feeding engine - to insert the bag - to
fill installs - measurement - fall the bag .
2). Engine off step: Closes the feeding engine - emptying the cement in the
packer - switch off the total power source .
Entire operation and routine maintenance
1). Before driving, we should pay attention to the scene environment,
eliminating the influence work the obstacle,forbidding other personnel to close
to the rotary packer besides inserts the bag .
2). Before driving, we should inspect the electric appliance part earnestly,
the velometer knob position in 0, the turn clockwise knob accelerates to need
the rotational speed gradually, each minute engine off must by all means make
the velometer return to knob 0.
3). Inserts the bag ,the body and the machine must maintain the suitable
distances, preventing to bump into and injure.
4). When fills installs, we does not permit the hand to press, the foot kicks
the cement bag, in order to avoid influence measuring accuracy.
5). When the operation appears failure ,emergency stopping maintenance ,
cutting off power supply, , listing alerts or the specialist care.
6). Packer of grounding protection wants safely reliable,and regularly test
ground resistance .
7). When the belt suddenly stop , they should immediately cut off the cement
packer rotary power to scratch-resistant package .
Advanced mining machinery pays attention to advanced crushing and grinding machine
Recently, in order to speed up the reconstruction, all sectors now has a
higher requirements to the performance of large mechanical equipments used in
the construction. Thus, the development of the mining equipment has gradually
shifted to develop and research high tech crusher and grinding mill.
As one of the mining machinery manufacturer walking in the forefront of
science and technology, Henan Hongxing has its own special insights on the
research and development of new products. We think that the quality of the high
tech crusher hammer is the key to the development of a crusher.
Take the crusher used in cement industry as an example, the working
environment of crusher in cement industry is relatively bad, which need hammer
with strong wear resistance. As with the traditional crusher equipment, because
the poor quality of the hammer, it needs to be replaced regularly. The key of
research and develop high tech crusher is to improve the wear resistance of the
hammer and to reduce the cost of the maintenance. When customers choosing a
crusher equipment they mainly pay attention to the service life of hammer,
stability in use and whether it is easy to break and so on.
Advanced crusher hammer is generally made by hadifield steel of good
toughness, high resistance, which can cushion the impact strength and increase
the wear resistance. In addition, the design of the hammer structure is also the
emphasis. The geometry design of a hammer are closely to the elimination of the
impact force, the effect is obvious especially for the hammer of large thickness
and size.
Additionally, Henan Hongxing also believe the gap problem is important, the
gap mainly refers to the gap between the rotor body and a back plate and the
hammer. The size of the gap is related to the blocking material problem, once
there exists blocking materials, it would exacerbate the wear of the hammer. So
it is necessary to design a good gap size.
Taking Hubei as an example China is getting more notice on enerty efficiency
Hubei, the birthplace of modern industry in China, is one of the important
old industrial bases and one of the three largest steel bases in our country. It
is also the largest production base of medium, heavy, sheet plates and special
steel, the second largest production base of automobiles and the largest
production base of medium trucks, the largest production base of heavy machine
tools and packaging machinery, the biggest hydraulic power base, and the largest
production base of Join-alkali, agricultural chemicals, phosphorus, salt
chemical industry and striate gypsum. It is also a national photoelectron
information industrial base in China and one of modernized traditional Chinese
medicine bases and important textile bases. It has established a distinctive
industrial system, forming a pattern with automobile, steel and photoelectron
information as advantaged industry.
Recently, problems about climate, energy and environment are more and more
serious. In order to recall the issues, the Department of Housing and
Urban-Rural Development of the Hubei Province has recently circulated a report
on the special inspection of 'building energy efficiency work and targets
completion' in 17 cities (prefectures, municipalities, forest zones) as well as
12 counties (cities, districts) in 2011.
The evaluation of 'building energy conservation' includes the assessment of
construction of management systems; formulation of supporting policies;
execution of laws and regulations; supervision of law enforcement; publicity and
training, and completion of tasks in key fields. The inspection also examines
the fulfillment of objectives, including the implementation of new building
energy efficiency standards; application of renewable energy buildings;
development of green architecture; 'prohibition of solid clay bricks'; and
application of new wall materials.
Based on the inspection results, the province has adopted effective
initiatives to implement the national and provincial laws, regulations and
standards on building energy efficiency. Building energy conservation is
expected to exceed the annual target with a production of 1.05 million tons of
equivalent coal in 2012.
Mining Equipment named China is about to spread across America
As the weakening U.S. economy, China is set over the United States next year
as the world's largest manufacturer, which four years earlier than expected.
This great leap forward by the United States provides economic consulting firm
Global Insight forecast shows. According to forecasts, China will account for
11.783 trillion U.S. dollars next year, manufacturing value added of 17%, while
the U.S. will account for 16. U.S. still topped the list last year, accounting
for one fifth of the global total. China accounted for 13.2%, occupies the
second.
In Made in China Industry all the way and sing, by leaps and bounds, we have
noticed that we are inadequate. We are just a big manufacturing country, not a
manufacturing power, and many related key we have not mastered the core
technology and manufacturing power, we have a lot to be desired. Therefore, to
develop the manufacturing sector, we must earnestly practice the 'scientific
development', and vigorously the introduction of talent, technology innovation,
so that we can really enter the manufacturing power.
The overall Chinese mining market is dominated by coal, of which 90 percent
is underground, in contrast with the US coal market, which is mostly surface
mining, according to the JPMorgan analyst Ann Duignan in a research note. After
recession hit in late 2008, the price of many commodities such as copper,
aluminum and iron ore fell as demand from manufacturers dropped off. Mining
companies idled production and laid off workers.
But since last year, metals prices have rebounded sharply, prompting
producers to reopen mines and start up idled projects. That has put a strain on
supplies of equipment, with some producers complaining they cannot get adequate
supplies.
As the famous mining equipment manufacturing industry, the largest
manufacturer of crushing and screening, Henan Hongxing Mining Machinery Co.,
Ltd. is located at the Hig-Tech development Zone Zhengzhou,China. We mainly
produce stone crusher, ball mill, sand making machine and the full
set of dressing equipments, such as rotary kiln, it is
widely used in metallurgy, mining, chemical industry, building materials, coal,
refractory materials, ceramics and other industries. Since the establishment of
the company, we have always manufactured products under advanced modern
management system with independent innovation and brought together a number of
talents in science and technology.
We always regard the quality of the products as the life of enterprise and
our products have pass the certification of international quality system
ISO9001, 2000. The after sale service is the last of ensuring quality. We have
an experienced and skilled after sale service team which offers tracking service
all over the country.
In the mining industry, roller crushers are used to crush mines of medium or
low hardness, rocks that have low or medium rigidity during mine selection, for
cement, chemicals, and industrial production of building materials, among
others. However, their use in the mining industry has greatly declined due to
their inability to produce large amounts of output. In mining applications, the
roll crusher does not match up to cone crushers, when
considering the volume of production and maintenance costs. However, roll
crushers have the advantage of producing a close distribution of the product
size. In cases where the ore is not very abrasive, the maintenance costs are
significantly reduced.
Roll crusher work, paying particular attention to the following:
1) to strengthen the work to the removal of iron ore. Non-broken material
(solder first class materials) fall into the room on roller crusher damage,
resulting in parking accident. Therefore, lithotripsy should be installed before
the addition of iron device.
2) viscous material easy to plug the break room, plug in the treatment
failure should stop processing, not to poke mine in operation.
3) when dealing with were more of materials with large, easy to pay attention
to large deposits of space squeezed out from the broken to prevent injury or
equipment damage.
4) roll crusher run a long time, due to the roll surface wear larger size too
small will lead to products, then adjust the arrangement to pay attention to
mine mouth or on the device for maintenance.
5) to strengthen inspection of the equipment, lubrication equipment, parts of
the fuel on time, maintaining good lubrication equipment.
Importance and views on developing the Coal Industry
Coal, which is an important fundamental energy source and raw material of our
country, and plays an important strategic role in the national economy, will be
the main energy source in the primary energy structure of our country for a long
time. From the opening and reform, the coal industry has rapidly developed, its
output is on continuous increase, its production technical level is gradually
enhanced, the work safety conditions of coal mines are also improved, and the
coal industry has played an important role in the national economy and social
development. However, there still exist many prominent problems in the
development of the coal industry, such as the illogical structure, extensive
growth pattern, low scientific and technological level, recurring safety
accidents, serious waste of resources, retarded environmental control as well as
many other problems left over by history. Along with the development of national
economy, the demand on coal is on the rise, therefore the resources, environment
and safety pressure will be further increased.
The work safety of coal mines shall always be on top of all works, and the
construction of large-scale coal bases and the cultivation of large-scale coal
enterprises and enterprise groups shall be the mainstream. Pursuant to the
requirements for the overall arrangement of collaborative development of the
coal industry and other relevant industries, the overall arrangement of
collaborative development of the coal exploitation and the ecological
environment, the overall arrangement of collaborative development of the economy
of mines and the regional economy, a new type of coal industrial system suitable
for the socialist market economic mechanism shall be built, the continuous,
stable and sound development of the coal industry shall be realized, and the
construction of a conservation-minded society shall be accelerated so as to
provide reliable energy resources for building a well-off society in an
all-round way.
From 2005, three to five years shall be used to build a well-regulated coal
resource exploitation order, build large-scale coal bases, engender several
large-scale coal enterprises and enterprise groups with the production capacity
of more than a hundred million tons, largely improve the basic safety conditions
of coal mines, effectively control the gas of coal mines, effectively control
the recurring tendency of major and utterly serious accidents, evidently make
the work safety of coal mines more favorable, basically control the aggravating
tendency of the ecological environment of mining areas and gradually perfect the
system of coal regulations and policies.
Strengthening the planning administration of coal resources. The coal
resources are important strategic resources, therefore the administrative
pattern shall be improved so as to realize the transformation of scientific and
rational exploitation and protective and intensive administration from the
extensive exploitation administration. The nationally planned mining areas of
coal resources and mining areas that are important to the national economy shall
be determined in a lawful, scientific and rational manner, and the exploitation
shall be orderly conducted in strict accordance with the state plans.
We will win the laurel of the first mining machinery brand in China
Mining equipment is an important part of the mining machinery which is widely
used in the mining industry. Mining machinery is used for extraction of minerals
and rich selection of mechanical and other operations, mainly including
exploration machinery, ore mining machinery and mineral processing
machinery.
Hongxing Company lays much emphasis on the quality and clients. We serve
clients with the quality guideline of being responsible for every working
procedure, every product and every client. What we have done is for the clients
and we believe that quality is the best way to develop market. All of the
products have passed the authentication of ISO9001. Hongxing Brand is the
Chinese Famous Brand. Reliable and stable quality is the key to success; our
products are well known at home and abroad. Now we have tens of thousands of
users throughout China and more than 30 world markets, such as: South Africa,
Middle East, India, Philippine, Western Europe, Southeastern Asia.
Mining crushers are equipments used for crushing mining stones or rocks. They
are widely applied to crush high hardness, mid hardness and soft rocks and ores
such as stags, construction materials, marble, etc, whose pressure resistance
strength is under 200Mpa. It is suitable for primary crush. Besides this, they
can be used in mining metallurgical industry, construction, road and railway
building, conversancy, chemistry, etc.
Mining machinery includes ore mining machinery and mineral processing
machinery. The first mining equipment is mainly used for metal ores and nonmetal
ores. By ore dressing process the processing machinery can be divided into
crushing machines, grinding machines, screening machines, sorting (the sorting)
machinery and mechanical dehydration.
After mining crushing process, we enter the mining milling process. When ores
are crushed into small size suitable for grinding, Hongxing mining mill
equipments are the right mining machines. Hongxing mining mill equipment has
been widely used in metallurgy industry, chemical, building, steel industry,
coal industry, etc. And it has achieved large economic benefits and social
benefits.
With a wide range, good quality, reasonable prices and stylish designs, our
products are extensively used in mining, metallurgy, building, coal, refractory,
ceramic and other industries.
Our products are widely recognized and trusted by users and can meet
continuously developing economic and social needs.
We welcome new and old customers from all walks of life to contact us for
future business relationships and achieving mutual success! We will take
advanced technology, scientific management system and product quality as the
starting point based on ISO9001:2000 requirement to become the best and No.1
mining machinery brand in China.
Facing the flourishing Mining Mafia how does Alwar do
The flourishing business of illegal mining in Alwar is taking place under the
patronage of district administration and police department, claims intelligence
report of Rajasthan police that TOI has. As per the report sent on October 18,
2010, T Gutie, the then inspector general (intelligence) mentioned that in lieu
of allowing illegal mining, the authorities receive monthly payment from mine
mafias. The report says that due to proximity to national capital region (NCR)
around 1,500 dumpers reach Delhi and Haryana daily without any hurdles.
A 50-member team that went to Kahrani village in Alwar district to stop
illegal mining on Sunday was attacked by the illegal miners. More than six
policemen were injured, out of which three have been admitted to a hospital.
After the Supreme Court's (SC) decision where it came down heavily on state
government's inability to restrict illegal mining, authorities have geared up
their efforts to shut these mines.
The team was able to close down 27 mines in Tijara and seized 50 stone
screening plants along with 8 crushers at Udhanwas in Alwar. 'Following the SC
orders we have been taking action against illegal mines and have shut down four
dozen units in the past few days,' said JP Jakhar mining engineer. He added,
'With the help of police department we have dismantled the stone crushing units
and seized the crushers and other equipment.'
There is full support of officials from police, forest, mines and district
administration to provide uninterrupted transportation. The copy was sent to the
then home secretary, PK Deb. Despite these intelligence reports no action was
taken.
After the strong criticism by the Supreme Court the district collector had
issued orders for firm action against illegal mining. 'We are following the
orders of SC and all the steps are being taken as per the instructions from the
honorable court,' said Ashutosh AT, district collector, Alwar.
Illegal mining is carried out in entire RAJASTHAN and every officer
responsible to check it is getting its share .Whether he is from Central Govt or
from forest ,revenue ,police and mining.All politicians upto rank of minister
are involved.
RWE Power is one of Europe's leading energy utilities and Germany's biggest
coal miner. The company would help R-Power design and plan the engineering
aspects of captive mine and procurement of equipment and ensure quality control,
the company said on Thursday. Government has allocated Kerendari B and C coal
blocks of North Karanpura coal fields in Jharkhand to meet the fuel requirements
of the Tilaiya project. These mines have reserve of over 1 billion tonne. The
company plans to produce 40 million tonnes of coal per year.
'Although a great deal of research has shown that physically-imposing
individuals are more likely to acquire power, this work is the first to show
that being powerful may actually make people feel taller than they are. We found
that people literally perceived themselves as taller when they occupied a more
powerful position,' the Telegraph quoted Prof Goncalo as saying.
This is a good arrangement for R-Power to have experienced mining Company to
plan, design and mine coal from captive mines from power generation. Arrangement
will be helpful for Indian power customers as long as the cost of power produced
by this arrangement is going to be reasonable. The cost control and efficiency
in producing coal should a key factor regarding success. Indian government and
the State need to a watchful eyes in this type of projects. Everyone should win
from use of national resources for the good of the people. Government needs
update its tax structures along with the ever increasing energy prices up wards.
Proper monitoring and tax policy should keep the project winwin for allthe
stakeholders.
Two important part for mining industry - Crushing and Grinding
In the mineral processing industry, production costs cover more than 40% of
the total cost on average, while the production costs of grinding covers more
than 40% on average. While the investments of grinding equipments account for
about 60% of the total investment of mineral processing industry.
All the processes that make large particle materials into small particles
through outside force can be called crushing, the mechanical appliance is called
crusher. All the processes that make small particle materials powder through
outside force can be called crushing or grinding. It can be called powder mill
for short. The machinery can be called pulverizer and grinding mill .The
machinery that combine the crushing and grinding can be called crushing and
grinding machine.
In the cement industry, the role of broken grinding costs in the cement works
are around 20% of production costs, and electricity consumption of crushing
machinery accounts for about 10% of total electricity consumption, while the
powder mill accounts for 60%.
With the economic rapid development of modern society, The demand and
production scale of all kinds of metal, nonmetal, chemical minerals, as well as
cement, building materials increase gradually, so the material that needs to be
crushed and grinded is increasing rapidly. Since the 90s, the annual amount of
material through the broken grinding is up to 100 million tons. China's annual
output of brittle materials has already reached more than 1.5 billion, of which
about 240 million tons are iron ore, more than 100 million tons of nonferrous
metals ore, more than 260 million tons of non-metallic minerals, over 30 million
tons of chemical minerals, about 400 million tons of cement ,more than 470
million tons of limestone for building. Most of these materials must be broken
through the grinding, so we can see crushing and powder projects play a huge
role in the national economy.
Many different types of stone
crusher, stone crushing production line are often used, complete production
line and mineral sand production line stone, stone crushing production. The
current breaker Heavy machinery industry has developed into a relatively large
branch of industry, the benefits of working the heavy machinery crusher
applications for the current situation and the stone industry in a variety of
different quality characteristics, according to different Application of sums up
the current industry crusher several major categories, including jaw crusher, impact crusher, hammer crusher and a cone crusher and so on.
The whole pulverizer is of a standing structure and characteristic of a small
occupying space and strong integration capability. It can form up an independent
production system from lump material crushing to finished powder and packaging.
The electrical system of the pulverizer is centrally controlled and the advanced
model is rationally selected. Basically, an unmanned operation can be realized
in the pulverizing workshop. The lightweight and compact vibration feeder can
feed the material uniformly. It is easily adjustable, energy saving and
convenient for operation and maintenance.
Good equipment quality can shape nice enterprise fame
According to the industry policy that our country will give significant
support to the development of basic industry like energy, transportation and raw
material, as the backbone of these basic industries, mining machinery should get
prior support so that it can further develop and improve in order to provide
more crushing and grinding machines with international advanced level for the
exploitation of coal, metal and non-metal mining hill, and satisfy the demand of
energy and raw material of national economic development. The mining equipment
mainly includes jaw crusher,
sand maker and
powder-grinding machine, among which crusher is the most important link in the
whole rock crushing process and also the important symbol of measuring the
strength of the mining facilities manufacturing industry.
Mining breaking and grinding machinery is devices that have high technology
content and integration and the development of new equipment is mixed together
with more and more achievements from other business scopes. With the development
and advancement of material science, information technology and computer
technology, every round of products are injected with new techniques, the update
cycle of spare part is becoming shorter and shorter and the upgrading of new
equipment is becoming faster and faster. Especially for the development of
large-sized mining equipment, because there is no mature experience that can be
learned and any mistake is allowed, it has to be researched with the help of
mixing with many discipline techniques, improve the design efficiency and
quality and enhance the companys independent innovation ability and market
competitiveness. The rock crushing and grinding devices has formed a trend of
digital development with the basis of computer and internet technology.
When we look back on the development history of crusher, we can conclude that
the main breakers are vertical impact crusher, hammer breaker and
so on. Since the types are too many, their names are different.
The impact crushing machine
developed by Henan Hongxing Mining Machinery is the example that perfectly
combined with professional breaking technology and engineering manufacture and
also the sufficient representation of new technique and processing method. It
not only can provide the best rock aggregate for the highway, railway, high
building, municipal works, hydroelectric dam construction, port and wharf and
concrete mixing station, but becomes the core equipment in the artificial sand
making industry and stone transformation scope, and more and more becomes the
mainstream machine in the business scope of metal rock breaking, quartz sand
production and slag disposal. So this series of products are well received by
customers from home and abroad at the same time.
Useful items to make a purchase for Aggregates Crusher
Road and Bridge Construction as the most basic is the most widely used raw
materials , construction aggregate for drawing convenience, wide range of
applications and aggregate nature of the product itself has received special
attention. The face of increasingly intense situation in the domestic high-speed
railway construction , local governments have thrown the future of local
planning, a large number of high-speed railway , highway project has attracted
many domestic investors.
According to the policy situation prevailing circumstances , give full play
to local advantages of supporting the construction of road administration into a
lot of smart people who supply raw materials and an excellent business
opportunity. How to choose a good aggregate and aggregates production equipment
manufacturers to become a top priority for many investors concerned.
Construction of the railway under the road level on aggregate with different
quality requirements also vary , as far as possible to improve the quality of
aggregates is the inevitable choice of sand stones factory , which Crusher, sand making machine such as
the choice of aggregates production equipment is essential.
Aggregates are usually distinguished between fine and coarse aggregate.
Aggregates are classed as inert materials, such as washed natural sand (fine);
and natural gravel, which can be crushed to produce the appropriate size and
grading of aggregate, and similarly crushed, quarried stone (coarse). The
aggregate must have a minimum inherent strength requirement for structural
concrete, the coarse aggregate must not be weaker than the concrete paste.
All aggregate must be 'clean', i.e. not contaminated with organic matter or
clay/silty soils and overburden during extraction and storage.
As we know, under different local conditions , can be directly used in some
areas inside the river channel gravel or pebbles directly processed, according
to sediment concentration and the size of the stone optional equipment : jaw crusher , the European version
Jaw Crusher , cone crusher ,
sand making machine and so on . Of course, the actual materials , of which
package of equipment includes feeder , conveyor ( belt ), Vibrating Screen and sand washing machine .
The choice of aggregate equipment manufacturers is for the aggregate market
share of fundamental significance , choose a good breaker equipment , products
subject to quality assurance , maintenance of missed work can be removed from a
lot of time to provide income for the profit of sand stones factory Prerequisite
for stable operation . Given the nature of the equipment crushing machine , the
proposed investment aggregates production companies use personal inspection
equipment , visit the crusher equipment and use of on-site workshop , rigorous
treatment of choice crusher manufacturers , not just unilateral concessions
Figure price factor , in order to avoid Forest for the trees , not worth the
candle.
Striving for bright future we do constantly and consistently
The professional jaw
crusher manufacturer Henan Hongxing Mining Machinery Co.,Ltd constantly
innovates and develops the crushing method and not only has promoted the
improvement of such industries as mining, electricity, metallurgy and building
materials, but has made great contributions to the national infrastructure,
water, railway and high construction. For example, the hammer crusher is modified, and
the crushing efficiency is thus improved, the changing frequency of hammer is
reduced. We adopt high-chromium iron material hammer and steel one so that it
will be easy to break rock, stone and aggregate. The crushing plate has high
strength, wear and tear resistance and high tenacity; in the meantime, we also
improve the structure and dimensional precision, so that the service life is
expanded to two months and the crushing capacity is increased to twenty thousand
tons every hour.
The manufacturing method at present in Hongxing Machinery is still
meliorating and enhancing, and new material and technologies are all making
better and appearing. As long as the new technique and manufacturing methods and
materials are mature, they will be immediately applied in the production of the
industry. Then new equipment will be developed and researched, manufactured and
applied. The advancement and appearing of new facilities make the development of
crusher have significant progress and in the future, there will be more and more
new sand maker which will
inevitably bring more and more benefits to customers. Hongxing Machinery can
provide customers with excellent crushing and grinding equipment throughout the
year, and we will continue to innovate and research and develop breaking
machinery with less energy consumption and higher efficiency. Welcome all new
and old clients to our company to purchase products.
In recent years, with the fast development of mining machinery in our
country, our crusher industry also has significant improvement and new products
are constantly launched out, and the crushing technology also continues to
improve and make better. The improvement in technology includes that of jaw
crushing machine compound hammer cast and heat disposal method, roller-type
crusher, the temperature resistant technique of the crushing plate, high level
road construction road face-used stone breaking and processing, modification of
the hammer plate structure and wear and tear resistance. Hongxing Machinery has
modified the working and structural technical data so that the discussion of
superfine crushing can be realized and also the double rotator crusher system
also is developed. In recent decade many new products also were researched and
developed in the crushing industry like mobile crushing
station, superfine jaw crushing machine.
Brain needed to be used often, machine overhauled frequently
Jaw crusher is widely
used in mining, ore dressing plant, inertial force, poor working conditions,
heavy-duty work in primary crushing equipment. In order to ensure continuous
operation of the device's normal, full production capacity of equipment, in
addition to proper operation, regular maintenance and periodic maintenance, the
need for accurate and timely work to determine and eliminate potential
failures.
The main operation of the common faults:
A) crusher idling, the lower the metal crash occurred. Jaw crusher working
load, the lower the metal crash occurred may be the following three reasons:
1) mobile jaw and fixed jaw broken tooth plate each crash is due to the small
port of discharge caused, should be timely adjusted.
2) The thrust plate bearing or gasket conditioning crash occurs, usually
disappear by the spring elastic buffer rod or damaged, or does not bear the
weight of the spring caused by rotation, when the movable jaw plate, elbow
board, the body does not close with the three so that both ends of the support
bracket and produced the first shock, or adjust the pads hit each other, should
be strong in time compression nut until the crash disappeared.
3) there may be serious bracket bearing wear or loose slider, bracket serious
head wear, should be replaced.
B) work with metal crash, backing jitter. This phenomenon is often the
crushing chamber side of the liner and the tooth plate (fixed, fixed) loose,
loose or broken screws or strong result, it is timely solid or replaced.
C) after the brackets break frequently. In addition to transmit power after
the brackets, but also by its lack of intensity from the insurance role. In
addition to the middle bracket is too low intensity, the strength enough to
overcome the normal force of broken ore crushing damage produced, this may be
the weight of the spring rod, together with crushing force when the work
overload and break it, may be appropriate to transfer song spring.
D) flywheel turning, crushing machine does not work. Is due to the spring rod
and rod damage to the elbow from the trip lever nut bearing slider emerge, it
may be broken off bracket, should be re-replacement and installation.
E) flywheel significant swing back to slower eccentric shaft. The fault is
due to the pulley and flywheel key loose or damaged, turn the wheel and axle can
not be synchronized.
F) broken thicker particle size is Broken liner The lower part of the results
of serious wear and tear. Board or under the teeth should be replaced with new
liner exchange, port of discharge to adjust the required size.
Whenever adn wherever we must prevent accidents before they occur.
The fashion river of mining machinery industry now and future
As the mining equipment is a typical variety of heavy industrial machinery,
representing the level of manufacturing technology in China, therefore, the
state of the domestic production of mining equipment has to be seriously put a
lot of policies to support domestic production of mining equipment. Equipment
and as well , hardware or equipment during exploration, since they're
specialists for nutrient company shops, which means that have fossil fuel, the
form of iron ore, zinc coupled with other not-ferrous precious metals industry
is one area of trading stringed corporations.
Mining machinery and equipment mainly broken equipment, grinding equipment,
sand making equipment. In people's minds, scorching sun, dust billowing, mining
workers have been in such a 'polluted' environment to work. In recent years,
mining equipment companies follow-up in production technology, new green
energy-saving equipment costs are the scale and technological progress as the
industry declined sharply. Costs down, and mining investors willing to buy
affordable, reliable energy-saving equipment as production of environmental
protection device of choice. Based on this, look at the future growth of green
energy-saving equipment space, environmental protection and energy saving
equipment, the cost advantage of the emerging, there is no reason not to
optimistic about the environmental protection equipment industry.
Exploration machines and furthermore devices to have construction manufacture
of all-important rock and in addition electrical fitness equipment, that it is
overall performance results in being typical alternative as well as energy
saving sides. Employing the choice is about small metallurgy, modest mines,
trivial cement business owners will most certainly be d, the actual brand new
massive-scale concentrator, colossal coal homework botanical herb, combined with
gently the high concrete weed, mining fitness equipment, which often submit
increased principles, some sort of important to be able to attend to dimensions,
Make Your Mind Up below-time saving, terrific action of one's-preserving
infrastructure.
In recent years, mining machinery mining company workers, according to the
needs of the work environment, more focus on efficiency, energy saving,
environmental protection equipment R & D and production. Shanghai World
states in the crusher for mining, milling machines and sand making machine and
other major equipment development and particular attention this time of
manufacture. Shanghai World states set for customer mobile crushing plant, MTW
European ladder mill, VSI5X impact
crusher and other equipment, is the use of international advanced
technology, combined with the actual situation in the domestic mining industry
developed highly efficient energy-saving environmental protection equipment, is
also the current the industry's most needed products. High Efficiency Energy
Saving World State mobile
crusher station in the production, marked with independent intellectual
property rights and have a high technical level of the mobile crushing equipment
in the country was born, the technology to fill China's high-end mobile crushing
equipment blank Such devices have been internally rewritten the history of
dependence on imports, while domestic mobile crushing equipment to create a new
era of export.
Exploration systems creating group beneath direction regarding state rule
reforms to hurry within quickness together with business science, coordinate
development in order to exchange realistic price ., part in choices, needs in
the market to improve product assembly, spot, step-up sales revenue to make sure
you even more a long time-search term development. Offfering output and as well
sourcing level of expertise, installation in the birthday gift qualified and
creative natural ability of the business entity, the agency assembled a market
competitiveness with opportunity associated with the contemporary mining Jixie
home business clubs, to produce energy levels-saving general insurance policy
coverage for your mining components to attenuate the most important exploration
among visitors threat and therefore trading like place that will exploration
systems company within just Asia give rise to the increase.
Current China construction industry unfolds in all directions
By the international financial crisis, steel, etc. Metallurgy Impact of price
volatility in the industry, too much advantage of metallurgical machinery
manufacturing, and other hard hit areas. Ideas determine, the depth and breadth
of emancipating the mind, determine the quality and speed of enterprise
development. It is based on the international financial crisis brought about by
the change, a major adjustment, and development of a profound understanding of
the early heavy layout, and proposed the 'Four Abilities, four changes to
achieve' development ideas. 'Four capacity' refers to the 'capability of
independent innovation, meticulous management, risk control, harmony-building
capacity.' 'Four Changes' refers to 'the traditional areas of the main changes
to the diversification of products, mainly from the domestic market to both
international and domestic market changes, production from the traditional to
the new service-oriented manufacturer of the manufacturer, and from a scale pull
transition to innovation-driven growth. ' 'Independent innovation', and 'product
diversification' are mentioned in the first place.
In withstand international Financial Crisis, the impact of the traditional
machinery manufacturing industry, the development of a new industry to seize the
strategic high ground of the tide is flowing too. 27, the reporter learned from
the heavy group, the first quarter of this year, the Group's main business
income of 3.054 billion yuan, up 45%. Group to accelerate the manufacture of
heavy machinery to clean Energy , Clean coal, Track Road transport, port
machinery, engineering machinery, five new areas, and its 'flagship' enterprise
Taiyuan Heavy Industry on Steel The proportion of industry orders have been from
a peak of more than 70% down to the present 50%.
Currently too Tianjin Port Group is speeding up base, tons of press, steel
wheels new park construction, speed up the port machinery, engineering
machinery, rail transportation and other fields of industrial development speed;
efforts to achieve large-scale Taiyuan Heavy Industry Excavator , Wind power
products and nuclear products, and heavy coal-washing equipment, machine
independent production, with a specialization drives plate quickly become bigger
and stronger. ''12 5' end, we propose, too heavy to achieve Group sales of 30
billion strategic objectives.' Heavy group deputy chairman and general manager
of the public record, said Wang. Meanwhile, the international financial crisis
has strengthened too much of people's international strategy: only integrate
into the international market, absorb the international advanced concepts,
technology and management experience to full integration with the world, to
create an international enterprise groups. Today, in India, Vietnam, Brazil,
Chile, Peru and other emerging developing countries, 'too' brand metallurgy,
mining machinery and other products already have a strong competitive edge.
Asia, Africa, South America and other continents of the emerging developing
countries, who will be too heavy build 'the world too,' the main
battlefield.
Chinese resource-based industry helps the development of crusher machine
China's resource-based industry has long been dominated by extensive
development, exploitation of high cost low, the current number of Chinese mining
enterprises and distributed, industry concentration is too low, large-scale
backbone enterprises lack sufficient market power, resulting in the Chinese
mining enterprises in the international There is not enough voice.
Timely introduction of national policy, vigorously push forward the pace of
mining enterprises to speed up mergers and acquisitions, Ministry of Land and 12
other central ministries and commissions jointly issued the 'further promote the
development of mineral resources on the integration of the notice,' hereinafter
referred to as 'notice', requiring provinces and regions City speed up the
integration of mineral resources, integration of minerals including coal, iron,
manganese, copper, aluminum, lead, zinc, molybdenum, gold, tungsten, tin,
antimony, rare-earth, phosphorus, potassium and other important minerals. The
industry believes that this marks the integration of mineral resources into the
fast lane. The integration of coal resources in Shanxi which is the resource
integration of a miniature tide.
Influx of private capital competing state support to encourage the 'railway,
highway base,' the industry is bound to the crusher, sand making industry to
bring a huge opportunity for development. In fact, before the state 4 trillion
from the economic stimulus plan has to have begun in the state for road
transport, urban construction and infrastructure investment is to spare no
effort in policy is also strongly supported. Investment plans in the 4 trillion
during the early to see the opportunity to join the aggregate production of
entrepreneurs have earned pours. The inclination in this direction of national
policy Youxiang, with a keen business sense of smell of private capital will not
let this opportunity, therefore, crusher, sand making industry will usher in a
great development opportunities.
To develop railways, highways, strong beam and other basic equipment, the
biggest demand is high-quality gravel aggregate. A general infrastructure
projects, if less material can be purchase directly from small sand quarry, but
the long duration, engineering supplies and more, need to establish a dedicated
production base of gravel, sand and gravel materials specifically to meet the
demand for high-speed road sand stone. Generally invest in a gravel quarry, the
system consists of coarse crushed gravel workshop (including the transfer bar
screening), screening plant, the crushed plant, sand plant, check the screening
workshop and semi stockpile, windrow adjustment, finished aggregate yard, the
control system and its auxiliary facilities, etc..
We portable crushers can also preserve ecological environment
Mining 13ed September, National large-scale modernized coal preparation plant
company set up sit-meeting in Yinchuan city, Ningxia. This is the first
professional meeting in washing & separating processing hold by coal field
in the latest 10 years. It will widely summarize experience from large-scale
modernized coal preparation company, and improve coal producing and the way of
using. In this way, it will set up a ecological green mining concept of coal
mining and construction. Vigorously develop coal washing and processing, promote
cleaning and high efficiency using of coal and energy conservation and emission
reduction.
Along with the growth of coal preparing scale, the developing on high coal
ash, high sulfur coal, low coat coal, especially brown coal becomes much more
serious. It needs separator adn processing equipments more and more urgently.
Related technology and equipments develop so slow that is cannot meet the demand
of development. In order to promote coal washing and crushing going smoothly,
increase production of coal crushing and improve implement of energy
conservation and emission reduction, Henan Hongxing Machinery developed large
scale coal separating, washing and crushing equipment. Large scale jaw crusher and mobile crusher in coal crushing
and separating are with advanced technology, high efficiency, and environmental
protection. Environment worsening day by day and waste of mess, those caused by
mining is an issue now. It not only damages environment, but cannot make full
use of the mineral resource.
Based on large scale crushing equipment, energy conservation can go smoothly,
and improve comprehensive utilization of coal in a irrepealable role. In these
regards, Hongxing mobile
crushing station makes benefit in making full use of mineral resource,
especially in coal preparation. Integration plant work in a mine as a whole.
Large scale jaw crusher, impact crusher, cone crusher, feeder,
vibrating screen,
etc work independently. At the same time deal with the waste in processing,
effectively reduce the damage of environment pollution.
Under the restructuring of national mining machinery we also make changes
In recent years, according to structure adjustment of the national mining
machinery and the upgrade requirements of the transformation, Henan Hongxing
Machinery identifies new development strategy, adhere to the independent
innovation, upgrade, deep conversion, circulation development, deepen reform,
promote technology innovation, technology upgrading, upgrade the optimization
and upgrading of products, enterprise development and upgrade cluster of
upgrades, to make the first brand mining machinery in China and even the
world.
Firstly, to adhere to the independent innovation as the core. To make new
technology research on crushing and development platform. To make form of
incentive mechanism ti attract talents cultivation. To promote mine machinery
manufacturing enterprise to master key technologies and enhance the ability of
independent innovation.
Secondly, to adhere to developing advanced mining machinery manufacturing
industry as the main purpose. To promote jaw crusher, impactor crusher, mobile crusher, cone crusher, the sand making machine, etc
advantage industry. To speed up development, accelerate the each link of
information, industrialization fusion of mining machinery crusher in r&d,
manufacturing, marketing service, etc.
Thirdly, to adhered to base on the major projects, supported by large
projects make Xiazhou Machinery influent large area on crushing. To drive the
crushing industry into speeding up further engineering construction industry.
Fourthly, to insist to promote the adjustment of industrial structure as the
key to produce a group of new energy-saving environmental protection crusher
with strong core competitiveness, the leading product advantage prominent and
with the international competitiveness.
To speed up the ascension key technology research and development level of
mine crusher, conquer mining machinery key areas' core technology, it's the main
task and the key of '10-25' mining machinery upgrading. Focusing on the
independent innovation, and increases the competitive advantage, speeds up the
innovation and development of high-end mining machinery manufacturing industry.
It is an important transformation way to make Hongxing Machinery go further.
New technology applied in controlling flotation machine
Nowadays, the advanced flotation machine
adopts fully automatic control system. This system can be used in flotation of
metallic minerals and nonmetallic minerals. It mainly controls the concentration
of flotation slurry, reagent added volume and the liquid level of flotation
tank, and aims to improve the grade and recovery ratio of flotation concentrate,
as well as reduce production costs.
Flotation machines constitute the basic equipment for useful minerals
recovery from non-ferrous ores and other raw materials by flotation. It is
applicable for separating non-ferrous metal, black metal, noble metal, non-metal
mineral, raw body and materials of chemical industry, which are subject to
coarse separation, swept separation and flotation, so the useful ore are
reclaimed.
Adjust the flow of filling value through detecting the concentration and flow
of feeding slurry, stabilize the concentration of flotation slurry within the
setting value, accurately control the additional dosage according to different
requirements in different flotation stages; adopt inverse system method to
control the liquid level of flotation machine and decide the scraping amount of
flotation froth according to thechnological design, control water supplement
amount during intermediate process according to liquid level, detect the running
status of data analysis according to online grade for timely adjustment of
technological indexes.
The floatation machine impeller has a problem of air suction which has to
rely on external fan to force the air blown in. Advanced instruments are used in
mineral processing,which measure,regulate and control air flow of SF flotation
machine.In this way,automatic control of flotation aeration rate is
achieved,which optimize the amount and dispersity of the air entering into
flotation tank and effectively increases contact rate of bubbles and mineral
particles,so that mineral indicators are stabilized.
The stock news of 2010 in Mining Machinery Industry
With the growth in the mining industry in recent years, demand for high-end
and cost-effective mining machineries is looking promising. The mining sector
has been expanding at a 3% to 4% rate yearly, and this growth is expected to
continue in many of the key mining regions of the world with India, China,
Australia and Brazil pushing the tempo. India's new mining policy, which has
been delayed for almost two years, is seen by a number of industry experts as a
boost to the mining sector as it will significantly reduce administrative delays
for issuance of new mining leases from the Indian federal government. These
positives in the global mining sector are boding well for heavy machinery
companies.
A few companies that have been making impressive strides in this space are
Joy Global Inc. (NASDAQ: JOYG), Bucyrus, Hitachi Construction Machinery and
Komatsu. Joy Global has recently pulverized Wall Street analysts' estimates in
its most recent quarter with equipment orders on an uptrend at 43%. Driven by
the boom in the mining sector, Caterpillar Inc. (NYSE: CAT), which has a
diversified portfolio of products, is working on the development of a new line
of mining shovels. These new monster machineries will be available in 2011 and
will be in direct competition with mining shovels from Bucyrus and Jay Global.
Caterpillar is forging ahead to expand its grip on the mining industry worldwide
as it announced an investment worth close to $700 million to begin manufacturing
the new range of 125-ton to 800-ton mining shovel models and boost production of
its trucks.
Competition promises to be fierce in the next few years amongst the titans of
this industry as they literally will be sending giants to fight for market
control. Whilst growth in demand for mining equipments and machineries is
anticipated to soar by almost 5% on a yearly basis for the next 2 to 3 years,
there is also some fear that the cyclical nature of the mining sector can impact
some of the players that are focus mainly in the mining machinery
industry.
What do you think of future mining machinery industry
Global demand to increase over 4% yearly through 2013. Global demand for
mining equipment is projected to increase over four percent per year through
2013 to exceed $60 billion. Despite a sluggish outlook in the shorter term,
recovery is expected in the mining industry due to rising demand for commodities
such as iron ore and copper. In addition, the ongoing global thirst for energy
will boost global coal output. China and India will be leading sources of mining
equipment demand. However, just as importantly, these nations will continue to
fuel demand for mined products throughout the world, thereby providing
opportunities for machinery producers.
Developing areas to exhibit above-average growth
Eastern Europe, with extensive mineable resources, is projected to exhibit
above average growth in mining equipment demand, along with developing areas of
Asia, the Africa/Mideast region and Latin America, with the mature markets of
Western Europe and North America trailing. Within the latter two regions,
however, are some fairly notable global mining powers, including the US and
Canada, each with an abundance of natural resources; and Germany, which is a
major source of coal.
Asian markets now dominate other regions
China has shown strong growth in mining equipment demand, a direct result of
investment in its local mining industry. For example, coal output more than
doubled from 1998 to 2008, reflecting the nations intense need for energy. China
is also a major source of commodities such as iron ore and bauxite. China has
quickly emerged as the worlds largest producer of mining equipment, due in large
part to the nations growing mining industry. The other largest producers of
mining equipment are generally found in the United States and the industrialized
nations of Western Europe. Such countries have a long history and extensive
expertise in the development of capital equipment industries of all types, which
many have leveraged in mining machinery.
In addition to outer skin factor and the coefficient of rock, we need
consider the following production conditions:
1. Deposits in the vicinity of the transport sub-lines and the location of
branch. In this part of the quarry should be clarified by the possible routes
that out of the product. When explore the quarry, in any case, must explain the
Road traffic performance in the period of whole year, artificial constructs of
state, the need for the construction of new extension and the measures to
improve existing roads.
2. The possibility of construction in whole year, for the river side or in
the vicinity of the river deposits, we should consider that whether mining site
is in dangerous when inundation, this is particularly important.
3. Preparatory work before mining deposits, the possibility of using local
trees in following construction.
4. If there is a places to be the scrap yard which nearby the mineral
deposit. During the exploring time, we should measure the landform that can be
the scrap yard.
5. The information about the electric power source and availability of local
fuel data.
6. If any Local producers like machinery company can be used.
7. The information about the electric power source and availability of local
fuel data.
If there is residential area and its characteristics that nearby the mineral
deposit, and the possibility of involvement of local residents to participate in
the quarry work.
Iron is the worlds most commonly used metal steel, of which iron ore is
the key ingredient, represents almost 95% of all metal used per year. It is used
primarily in structural engineering applications and in maritime purposes,
automobiles, and general industrial applications.
Iron-rich rocks are common worldwide, but ore-grade commercial mining
operations are dominated by the countries listed in the table aside. The major
constraint to economics for iron ore deposits is not necessarily the grade or
size of the deposits, because it is not particularly hard to geologically prove
enough tonnage of the rocks exist. The main constraint is the position of the
iron ore relative to market, the cost of rail infrastructure to get it to market
and the energy cost required to do so.
Over the last 40 years, iron ore prices have been set by a so-called
benchmark system , between miners and steelmakers. In recent years, the
benchmark system has begun to break down, with some miners pushing for their
customers to use the spot market, and negotiations with the largest buyer,
China, causing friction. As the spot market has grown in size and importance,
financial hedging instruments such as iron ore swaps have emerged.
Iron ore reserves at present seem quite vast, but some are starting to
suggest that the maths of continual exponential increase in consumption can even
make this resource seem quite finite. The iron ore quarry mining process is
complicated process and need many mining equipment. Through the mining process
iron ore boulders are turned into all sizes of materials. The blasting process
is the first step determining what needs to be accomplished next. Rock hammers,
drop balls, primary crushers,
and gyratory crushers all contribute to the iron ore mining process. Coarse
materials are sent by belt conveyer to the iron ore crushing plant or iron ore
grinding plant for additional crushing, grinding and sizing. The mine stockpiles
different sizes of iron ore materials for their customers.
Iron ore coarse portable series mobile crushing plant is a new type of stone
crushing equipment, which expands the concept field in coarse crushing. Based on
the clients requirements, Portable series mobile crushing plant take the
problem like the crushing place, surroundings brought as the priority work. This
series mobile crushing plant really supply simpler, higher efficient ,lower cost
machines for clients.And the iron ore Portable series Mobile Crusher plant inludes :Jaw Crusher series ,Impact Crusher series ,portable crusher series
.And this kind of iron ore crushing plant features low operation cost and high
efficient.
Aspects that cloud grinding machine's price and performance
There is a specific operating speed for most efficient grinding. At a certain
point, controlled by the Mill speed, the load nearest the wall of the cylinder
breaks free and it is so quickly followed by other sections in the top curves as
to form a cascading, sliding stream containing several layers of balls separated
by material of varying thickness. Grinding Mill Price, the grinding influencing
factor said broadly, stave process influencing factor including material nature,
detritus equipment performance and operating condition.
One: Material nature kind of influencing factor mainly
includes the material the degree of hardness, density, the average gradings and
structures, water content, silt carrying capacity. The material degree of
hardness is bigger, not easy stave; The density of material is bigger, is bigger
according to the equipment handling ability that giving the material counts;
When the greatest granularity of material is certain, the average gradings are
thinner, needs the breaking work load to be less; The structure relaxation and
jointing growth good material is easy, but the watery and silt carrying capacity
big material are easy to cake, when is serious will cause the stave cavity
jamming.
Two: Detritus equipment performance kind of influencing
factor mainly includes the type, specification and the dump mouth equipment and
gnaws the angle. The type and specification of detritus equipment are to decide
it whether to satisfy the specific work request the first condition, thus when
the choice detritus equipment, must first act according to treats the broken
material the nature and quantity, determined that uses any type the equipment
and specification. On a concrete equipment, the dump mouths size in fact is
deciding its work quality and productivity. When the throat is over sized,
majority of materials without stave through dump mouth, thus makes the
productivity very big, but the reduction ratio is small;
Otherwise, when the dump mouth is too small, although the reduction ratio
will increase notably, but the productivity of equipment actually therefore
seriously drops. The when gnawing angle of detritus equipment is to refer to
being caught in the pincers of material block, the included angle between stave
working part surfaces, usually indicated with mark a. When according to this
definition, the gnawing angle of jaw breaker is being caught in the
pincers of material block, moves the jaw with deciding the included angle
between jaws, but the gnawing angle of roller breaker is to refer to the
included angle between material blocks and two roller surface contact tangents.
The detritus equipment gnawed a jiao size to decide directly whether the stave
process can carry on safely smoothly, was a very important equipment operational
parameter.
Three: Operating condition influence grinding process
operating condition mainly to material the work form of condition and detritus
equipment. Continuously evenly to the material both can guarantee that the
production normally is conducted, and can sharpen the productivity and working
efficiency of equipment. In addition, when the close up is stave, the
productivity of breaker may increase 15% 40%.
Ways to solve unstable factors and improve the function of Vibrating Screen
Vibrating screen
in line with crushig equipment , screening equipment for the mine. Vibrating
screen will appear in the course of many unstable factors, here we propose
several ways to improve screening efficiency, a direct impact on the shaker
quantity, hoping to help the majority of the shaker to the user, to effectively
solve your problem screening equipment .
In the stone processing, vibrating screen and crusher are often supporting
the use. But many unstable factors will appear in the course of using. Now we
propose several ways to improve screening efficiency. Vibrating screen has a
direct impact on capacity, so we hope to help the majority of the vibrating
screen users, to solve your problem.
1. To improve the hole sieve rate, a high percentage of open area will help
to improve screening effectiveness; usually the rate of welded stainless steel
sieve hole could be high.
2. Adjustment of the feed means that the material will be feeding along the
entire screen, to be sure to make full use of screen surface;
3. To reduce the rate of screen surface plug. You can consider the sieve
plate with self-cleaning. such as the spring rod surface or mesh screen added
the following anti-clogging device.
4. If Conditional, you can consider adjusting the inclination of sieve
machine, the appropriate angle helps to reduce the material thickness, to
achieve a thin layer of screening material.
5. If conditional, wet sieving, which is improved the most effective means of
screening.
6. For Vibrating Feeder
you can consider adjusting the weight to improve screening effectiveness.
7. For dry sieving, it is necessary to strictly control the feed water, when
the moisture is high, screening could be considered ingredients.
8. If conditional, the feed side can increase the fixed screen, for coarse
sieve.
Henan Hongxing vibrating screen are produced by use of boiler plate cold
riveting technology and driven by eccentric shaft. Comparing with the
traditional linear vibrating screen, it has advantage of reliable struction, the
high rate of screening, sturdy and durable, convenient maintenance. Especially
for mining, building materials, transportation, energy and chemical products, it
can do an effective even classification.
Suggestions and warnings when operating the Crusher
Before working on any equipment, attach warning tags directly to the machine,
near the controls.
Dress Properly
1. Keep hands and clothing away from moving parts. Do not take chances by
wearing loose sleeves, floppy ties, watches and rings.
2. Wear eye protection when handing fuel, cleaning fluid, oil or brake fluid.
These materials can damage your eyes.
3. Wear a respirator when required.
4. Wear safety glasses when drilling, grinding or hamming metal.
5. Keep your pockets free of objects which can fall out and into
machinery.
6. Wear a hard hat and safety shoes, when required.
7. Wear gloves to protect your hands when changing cables.
8. Wear safety glasses and protective clothing when using high pressure
air.
9. Wear safety goggles and protective clothing when handling molten metals;
zinc, babbitt, lead, etc.
10. Wear ear protective devices when required or reduce exposure time as
required.
Alcoholic Beverage And Medication
1. Do NOT consume alcoholic beverages before coming to work or while on the
job.
2. Beware of medicines, tranquilizers or other drugs which can make you
sleepy or less alert.
Keep Your Work Area Clean
1. Promote good housekeeping. Keep the floor clean and dry, free of debris
and tools. Oily and wet floors, steps and hand rails are slippery. In winter
watch out for ice and snow. Wet spots, especially near electrical equipment, are
dangerous.
2. Do NOT let material lay and build up on or around the equipment.
3. Store dangerous fluids in a suitable place away from unauthorized
personnel. Allow no smoking in the area!
4. Never start a diesel or gasoline engine within an enclosed area unless
there is adequate ventilation. Exhaust fumes can kill.
Perform Maintenance Work Safety
1. Use the proper tools; handle tools and heavy parts sensibly.
2. Keep all tools and equipment free of dirt, oil and grease. Do not drop
toss them.
3. Use hoisting equipment for heavy lifting.
4. Lower parts, do not drop them.
5. To prevent slipping, wipe hand levers and knobs clean of oil or
grease.
6. Do not use sheaves with cracked rims or spokes.
7. Check for missing, cracked or frayed V-belts before you operate
equipment.
8. Check for broken, defective or missing parts and replace them. Keep
equipment clean and free of dirt and oil so you can spot loose or defective
parts.
9. When using cables to move a load, be sure cables are of adequate size and
replace any worn, badly frayed, broken or kinked ones. Check end connections for
wear.
Be Aware Of Fire Hazards
1. Do NOT smoke while refuelling or when handling fuel containers.
2. Shut off your engine when refuelling and use extra caution if engine is
hot.
3. When pouring fuel into the tank, ground the funnel or spot against the
filler neck to avoid static electric spark.
4. Do NOT use gasoline or diesel fuel for cleaning parts. Good commercial,
non-flammable solvents are safer.
5. Do NOT smoke while using cleaning solvents.
6. Do NOT let greasy, oily rags accumulate in a poorly ventilated area. Store
oily rags and other combustible material in a safe place.
7. Never use an open flame to check fuel, battery electrolyte, or coolant
levels ... or to look for hydraulic leaks anywhere on the equipment. Use a
flashlight!
8. Know where fire extinguishers are kept and how they operate and for
what type of fire. Check regularly at least monthly to be sure they are in
good working condition.
Equipment for the most abundant crust material in earth - Silica
Second and then oxygen, silicon is easily the most abundant take into account
Earths crust. It is found in rocks, sand, clays and soils, along with either
oxygen as silicon dioxide, or with oxygen as well as other elements as
silicates. Silicons compounds will also be found in water, within the
atmosphere, in several plants, as well as in certain animals.
Large silica stone( input dimensions are greater than 40mm) is transported to
jaw crusher via vibrating feeder for primary crushing. Then a crushed materials
are screened out into many different types with a vibrating screen. The stone
with satisfied dimension is transported to sand automatic washer, while the rest
will probably be back to jaw crusher or cone crusher for breaking again. When
from the role of sand making machine, the ultimate products artificial sand is
formed. After washing in sand
washers, the pure sand meeting your requirement is produced.
Sand making machine is utilized for silica sand manufacturing process, and
power from various minerals. It is utilized in fine and medium size crushing of
coarse material, rocks, stones, minerals, building aggregate concrete and other
material. SBM Sand making machines are of high efficiency and high performance
crusher, lower in maintenance and low operating cost.
Variety of Mining Processing Machinery play their roles
In extractive metallurgy, mineral processing, also called mineral dressing or
ore dressing, is the procedure of separating commercially valuable minerals
using their ores. Mining Processing Machinery include crushing
equipment,grinding equipment,Gravity machine, flotation machine and Magnetic
separation
Ahead of the advent of heavy machinery the raw ore was split up using hammers
wielded by hand, a procedure called spalling. In a short time, mechanical
means put together to achieve this. For example, stamp mills were chosen for
Samarkand as early as 973. These were also being used in medieval Persia. By the
11th century, stamp mills were in widespread use through the entire medieval
Islamic world, from Islamic Spain and North Africa in the western world to
Central Asia inside the east. A later example was the Cornish stamps, that
includes a series of iron hammers mounted in a vertical frame, raised by cams on
the shaft of a waterwheel and falling about the ore under gravity.
The easiest method of separating ore from gangue contains the selecting the
individual crystals of each and every. This can be a very tedious process,
particularly when the person particles are small. Another comparatively simple
method depends on the various minerals having different densities, causing them
to collect in different places: metallic minerals (being heavier) will give up
of suspension quicker than lighter ones, that is carried further by way of a
stream of water. The process of panning and sifting for gold uses both these
methods. Various devices known as buddles were chosen to consider good thing
about this property.
Dryer can be used for drying materials with humidity or granularity in the
industries of mineral dressing, building material, metallurgy and chemical.
Rotating dryer can be utilized for drying many kinds of materials along with
convenient and reliable operation.
This machine is principally found in ore selecting, building materials,
metallurgy and chemicals to dry the types of materials with certain moisture and
size. The rotary drier includes a strong adaptability which could dry many
different types of materials having a simple operation method and security
trait, so it is traditionally used.
Ball mill is surely an
efficient tool for grinding many materials into fine powder. The Ball mill is
utilized to grind many kinds of mine as well as other materials, or select the
mine. It is traditionally used in building material, chemical industry, etc.
There are 2 means of grinding: the dry process as well as the wet process. It
may be split into tabular type and flowing type in accordance with various forms
of discharging material.
Magnetic Separator can
separate the raw materials with various magnetic rigidities. The device works
beneath the magnetic force and machine force. Magnetic Separators are designed
to recover ferromagnetic materials. The separators are available in designs and
sizes to provide solutions for many applications. The center of every separator
will be the magnetic system with its unique design, with a proven record of high
efficiency. The Magnetic Separators can be found in cyclic design with process
vessel diameters from 220 mm to three,050 mm.
To crush quartz and other ballast with our crushing plant
Quartz Mining Equipment
Quartz mining requires various machineries and equipments for processing the
raw materials. Quartz mining equipment is the main equipment during quartz
processing plant and can be used for producing small scale crushing quartz and
large scale crushing quartz etc. Our quartz mining equipments include crusher
equipment, silica and equipment, silica sand production line, ball mill. We use quartz crushers
for crushing ordinary quartz sand, in order to get high purity quartz sand or
fine quartz sand, the ball mill is a key piece of equipment for grinding crushed
materials, and it is widely used in production lines for powders.
Rock hammers, drop balls, primary crushers, and gyratory
crushers all contribute to the quartz mining process. When asked the maximum
particle size of the final product of 0.2 ~ 0.15mm (or 60% to 79% -200 mesh),
generally used a grinding process. Small factories, in order to simplify the
process and device configuration, when the grinding fineness required 80% -200
mesh, we also used a grinding process. Two outstanding advantages of grinding
can be smaller products, in different sections coarse grinding and fine
grinding, especially for stage process.
Mobile crushing and screening plant set up a new range of business
opportunities for coarse and fine crushing. So it is used widely in quarry for
crshing all kinds of stones such as limestone, granite, bauxite, basalt to get
aggregate, gravel, and artificial sand. Mobile crushing and screening plant is
also used in Metal Ore Mining and energy utilization, such as mobile ore
crusher, mobile coal crusher, mobile gold ore crusher and other mobile crushing
and screening plants.
Stone crushing equipment or rock crushing equipment is the other name of stone crusher or rock crusher which is used for
crushing stone and rocks in quarry plants. Granite crushing plant is complete
set of crushing equipment including vibrating feeder, jaw crusher, impact crusher, cone crusher (optional), vibrating screen, conveyor belt
etc. According to the granite crushing process, we can supply you granite
crusher, granite grinding machine, granite processing equipments with low cost
and high quality in grainte mining industry.
