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.
