The methods to select the hands of mining machinery: vibratory feeder
The vibratory feeder is used to transfer the large size materials and
granular materials from hopper to receiving device uniformly, periodically and
continuously in the production flow and to feed materials into the crusher
continuously and uniformly also to screen the materials in the sandstone
production line.It is widely used to match the crushing and sieving equipments
in many industries including metallurgy, coal mine, mineral dressing, building
material, chemical, grinding, etc. Without vibrating feeder, it is like that
one without hands to eat. And also, vibrating feeders are expensive machinery,
so we should take serious and cautious consideration on selection to make sure
the cost and future using.
Two steps are required in selecting the proper feeder for a specific
installation:
1. Obtaining basic application information.
2. Following a selection procedure.
Information Required:
1. Largest size material in feed.
2. Approximate analysis of material size.
3. Desired capacity.
4. Type and description of material.
5. Type of installation.
Selection Procedure
Step 1. From Chart I, select feeder width factor appropriate to the
application. Multiply the factor by the size of the largest piece in the feed to
obtain minimum feeder width.
Step 2. Check the minimum width determined in Step 1 with capacity in Chart
II. Note required slope angle to produce desired capacity. If necessary,
increase feeder width to obtain desired capacity. There may be several
combinations of slope and width which will produce the capacity required.
Factors such as headroom, depth of bed, unit cost, width of conveyor or
crusher and future capacity requirements should be considered prior o final
selection.
Step 3. Feeder lengths should not be shorter than that needed to retain
material at its angle of repose on the feeder pan when the feeder is shut
down... plus a 6 to 12 safety factor to prevent possibility of free flow.
Feeder length must be sufficient to convey the required distance.
Step 4. Select slope angle to best suit required capacity from Chart II and
length to retain material angle of repose from illustration B. A sketch drawn to
scale showing slope and material repose angles will assist in showing
relationship between feeder length and slope.
Step 5. When a four-sided hopper is used, refer to Chart I and illustration B
to determine minimum hopper throat opening. Simply multiply the largest material
lump size by the hopper throat opening factor to obtain this figure.
Step 6. Make final feeder selection. Often, more than one size and type of
feeder will satisfy the application requirements. The final selection will
depend on various factors including:
a. Size and type of crusher when feeding directly to crusher.
b. Conveyor width when feeding in line with material travel.
c. Size of material handled and loading on feeder.
d. Hopper capacity required. With a larger feeder there is more hopper
capacity.
e. Headroom available. A sloped feeder normally requires more headroom.
f. Amount of grizzly length required to remove fines.
g. Price. A smaller or lighter duty feeder is less expensive.
h. Future requirements. Will a larger crusher or conveyor be installed? Will
plant capacity be increased?
Hongxing grinder machines perform excellently in crushing coal gangue
Coal gangue is researched and used as a solid waste with great quantity and
also a recycling resource, in construction, metallurgy, light industry and
chemical industry. Coal gangue was activated by means of calcination in seven
temperature ranges.
Nowadays, coal gangue is mainly employed to make general building materials,
high-grade building ceramic tiles, coating materials and fillings, high
value-added products, and stuffing in road building.The ceramic tile has been
one of building's decorate materials since a long time. Kaolinminerals is raw
material of ceramic tile.According to statistics, output of our country ceramic
tile achieves 171.5 million square meters, account for 2/5 of world's output in
2002 year. With developing science technology improving and administer level
advancing, quality and variety of our country ceramic tile has very changed. But
clay raw material of ceramic tile increase losing of cultivated land, we must
look for new raw material of ceramic tile as quickly as possible.
Owing to compare to clay, raw material of kaolinminerals-high-aluminum-coal
gangue possess higher hardness, therefore, traditional crushing technics will
bring about consuming more energy and rising cost of tile.The microwave
technology can reduce crushing strength of coal gangue, milling expenditure,
economy energy, reducing cost.This paper indicates that traditional milling
technics need 4.00 hours when coal gangue is milled to 325 without microwave
radiation. The milling only needs 55.00 minute after microwave radiation 5.00
minute. So, microwave radiation pre-crushing coal gangue raw material can save
1/2 of electrical fee in actual project per year.
Under the situation of lacking energy, mining machinery equipment manufactory
is paying more attention on high efficiency and energy saving. Henan Hongxing
Machinery takes notice on update and promotion of mining machinery equipment,
and its HGM series medium-speed micro-powder making machine is the new
generation equipment. The HGM series grinder is one kind of fine powder and
superfine powder processing machine, and is used for coal gangue, marble, chalk,
barite, bentonite, rock phosphate, rectorite etc. It has many advantages: high
efficiency, long life of quick-wear part, high safety and reliability, super
fine powder, environmental protection and so on. The whole equipment of HGM
medium-speed grinder consists of hammer crusher, bucket elevator, storage bin,
electric magnetic feeder, powder collector, pulse dust removal, main engine,
powder concentrator, high pressure fan, silencer.
Henan Hongxing Machinery is the professional manufacturer of powder making
machines. Through 20 years of researches and development, there are a series of
powder making machines, HGM series micro-powder grinder, MTW series Europen
trapezium grinder, LM series vertical grinder, super pressure trapezium grinder,
high pressure roll grinder.
Where to seek whole equipment for barite? - Hongxing is here.
Barite is kind of non-metallic mineral products which take the barium sulfate
(BaSO4) as the main component. Barite is regarded as the common mineral of
barium, and it is major component is barium sulphate. It arises from the
hydrothermal veins, limestone, and clay deposits because of limestone
weathering. Barite can be used as zincolith (commonly known as lithopone), and
in addition applied in chemical industry, paper making, and textile packing.
China's total supply of barite in 2500 to 3000 tons, all from domestic
production for. Domestic consumption of barite in 1300 was about 1,200 tons, of
which oil and gas exploration for the 700 to 800 million tons, 60% of total
consumption; for barium chemical products 400 to 500 million tons, accounting
for about 30%; accounting for about 10%. China is the world's largest exporter
of barite. 90's annual export volume of barite and its products is generally 150
to 200 tons. Barite and the barium salt in 1996 2.058 million tons exported, the
export amount of 121 million, of which 1.86 million tons barite.
Barite powder fineness requirements typically require 325 mesh -1800 mesh,
for the fineness range, Hongxing manufacturing barite production line including
MTW Medium Speed Trapezium provide barite grinding mill , MTW European version
of the Trapezium Mill, HGM and other variety of ultra-fine powder mill New
milling machine equipment, the main model for grinding barite, barite ore can be
from 25 cm below the ore processed through the pipeline 325mesh -2500mesh
powder, ensure powder, powder sub-index to meet clients' demands.
Barite powder is white or gray crystalline powder, is an important mineral
containing barium, chemically inert, good stability, acid, density, hardness,
high specific gravity, high whiteness, can absorb the harmful rays (x-ray and
γ-rays), etc., a glass gloss, non-magnetic and non-toxic. Thus, widely used in
chemical, paint, rubber, glass, paper, medicine and other fields, according to
the latest statistics, the size of the use of more than 2000 items. high
specific gravity, high whiteness, can absorb the harmful rays (x-ray and
γ-rays), etc., a glass gloss, non-magnetic and non-toxic. Thus, widely used in
chemical, paint, rubber, glass, paper, medicine and other fields, according to
the latest statistics, the size of the use of more than 2000 items.
Barite crusher designed by Hongxing, Big size barite into crusher, after vibrating feeder in turn into jaw crusher, impact crusher, then will pass
through the sieve vibrating screening, get different sizes of finished product
barite to satisfy different materials demands.
If you are interested in one or more products and want to learn more details,
welcome to visit Henan Hongxing Mining Machinery Co., Ltd. for your barite
crushing line inquiries!
Industrial diesel engines run and develop in machinery industry
As we know, the price of petroleum and diesel is increasing fast, which
affects many development of industry.
Industrial diesel engines are any engines that are used for industrial
purposes that run on diesel. Industrial diesel engines are used to power a major
portion of industrial machinery, from motorbikes to bulldozers, generators, and
even forklifts and trucks. They range in size from a few pounds to a few tons,
with a various amount of power.
The use of diesel engines is mandated by several large organizations. All
NATO machinery for example, runs on either diesel or aviation grade kerosene. At
the current level of technology, fossil fuels, and especially diesel are the
most economical and convenient means of supplying power to a variety of
equipment and even backup generators.
All industrial diesel engines can be either air cooled or water cooled. The
smallest engines for residential purposes will typically provide about 10kW and
cost a few thousand USD. These smaller scale engines power much of the mobile
machinery we see around us on a daily basis, such as trucks, farm equipment,
small boats, stationary process machinery, earth movers, and so on.
The medium scale industrial diesel engines can provide levels between a few
hundred kW and a few thousand kW and are sold for prices in usually the
thousands of dollars. These types are used in larger machinery such as larger
mining equipment, oil rigs, trains, large boats, military equipment, and much
more.
The largest of industrial diesel engines provide 10,000 to 80,000 kW, sold in
the millions of dollars, and are used for ultra heavy equipment, electric power
generation, and the largest of ships. Large industrial engines can be up to 49
feet side and run on low grade diesels. In places such as China, where there is
a high demand for de-centralized power sources, these types of engines are often
utilized.
Industrial engines are classified in terms of their speed, or RPM (Rotations
Per Minute). High RPM engines are normally used for the lighter, more common
applications, such as trucks and other types of land equipment.
Medium RPM engines are generally used for power generation. Low RPM ranges,
and high torque engines are used for the biggest type of equipment, such as
marine equipment and applications.
For the most part, industrial diesel engines can vary in terms of size and
performance. Chances are, you've either seen or used industrial equipment at
some point in time. Although they cost a lot of money, they are the way to go
with bigger equipment for getting the job done right the first time.
Just like mining machinery industry, it is also affected by the phenomenon of
price rise. Jaw crusher market
is changed and innovated because of the rising price of steel materials.
The specific surplus disposal options for mining machinery enterprises
Consignment involves hiring an equipment dealer, typically the company that
sold you the equipment, to market and sell your surplus equipment.
The consignment process:
a. Consignee (broker) and Consignor (owner) agree upon market value of
equipment.
b. Execute or sign off on the consignment agreement.
c. Equipment is listed/marketed by broker.
d. Buyer submits a purchase offer on equipment.
e. Equipment is sold and broker collects payment; broker retains commission;
remaining funds sent to Consignor or owner of equipment; equipment is released
to buyer.
For this effort, the consignee or broker will charge a commission. Fees vary,
depending on the asset type but typically range from 8-20 % of the final sale
price. For example, on a $100,000 asset you can expect to pay $8-20,000 in
commissions.
Auctioneers
This method has been around forever and in fact can be traced back to 500
B.C. There are many types of auction formats but we will specifically address a
public auction for selling heavy equipment. In this format, the bidders'
identities are not hidden and anyone is welcome to attend the auction or to
place bids via the internet.
The equipment auction process:
a. Auction house or re-marketer appraises your assets and provides seller a
proposal outlining their commission structure. The percentage is based on the
amount and the value of the equipment a seller places at auction. Auction
companies sometimes partner with sellers by offering a guarantee to the seller
on what will net or be paid.
b. Location of auction determined. Large lots are subject to a lower
commission and if it warrants the auction can be held on seller's site. For
smaller lots, a higher fee is payable and the owner is required to transport the
assets to the closest auction yard.
c. Auction agreement is finalized.
d. Auctioneer sets date and equipment is marketed.
e. Bidders register and viewing/inspection of assets take place.
f. The numbered asset is called and bidding takes place. Bidders can be
physically present or place their bid on-line via an internet portal with the
asset awarded to highest bidder.
g. Payment is collected by Auctioneer, fees retained or deducted from sale
price with residual given to owner.
h. Asset is then released to buyer with conditions of sale attached.
Auctions can be risky as returns are not guaranteed, however, the process
encourages competition and the hope is two bidding parties want the asset enough
to pay fair market value or more.
Inside Sales (Sell it yourself)
Another attractive option is the disposition of the asset using your own
personnel. As in any business transaction, by selling to an end user and cutting
out the middle person you would expect to achieve a better return.
How to:
a. Use a reputable online equipment portal that ranks high with all major
search engines. For example, Google 'used mining equipment' and find a high
ranking portal.
b. Take digital pictures highlighting areas of the asset you would want to
see if you were the buyer.
c. If applicable, collect the maintenance history and the equipment/component
hours.
d. Record the make, model, serial number and any other equipment
specifications
e. Determine a selling price. If you are unsure of the market value of your
asset you can pay for an appraisal, request a free one from the OEM dealer, and
surf various internet portals reviewing sales history or asking prices of like
or similar assets. Reviewing the original purchase price documentation will also
help you ascertain a bench mark.
f. Post your assets using content rich relative keywords. In real estate it
is location, location, location, with mining equipment it is details, details,
details which will ensure you generate quality leads which will result in a
sale.
In addition to the financial benefits, there are many advantages to selling
your surplus equipment, such as, retaining control of the negotiation process
and disposition time-line. By selling the asset with an 'As is, Where is'
condition you also eliminate further financial risk by no longer having to
transport or dismantle the asset to auction.
As part of the due diligence process, a majority of the 'sell it yourself'
tasks should be done regardless of your final disposition decision, therefore,
attempting to sell it yourself is the next logical step to take and is
definitely worth the effort.
Crane industry expands and develops all over the world, South Africa as an example
Development of China's construction crane started in the 20th century, the
fifties or sixties, the late seventies through the eighties the introduction,
absorption and self-development phase since the nineties, the domestic
construction industry after crane wind and rain, since the sales began in 1993,
along decline until the market rebounder in 1999. In recent years, construction
machinery market continued to blow, the industry rarely appeared in the general
economy, industry profits and sales every year an average of over 35%. At the
same time, mining machinery industry has made great progress. Such as jaw crusher, cone crusher, Raymond mill have great market
and development space.
Not only in China, as to South Africa, crane industry is more and more
flourishing. There are some reports on this issue.
Heavy lift and relocation specialist Vanguard's R70-million investment, the
GTK 1100 crane, has arrived in South Africa. The crane is the only one of its
kind in Africa and is the seventh in the world.
The crane is designed and manufactured by Grove Cranes, a subsidiary of
Germany-based crane manufacturer Manitowoc.
Vanguard director Andrew Nordengen says that the crane arrived in the country
on April 21. The first lift it performed was during the installation of a 2-MW
wind turbine at the Coega industrial development zone, in Port Elizabeth.
However, Vanguard is positive that the GTK 1100 will spark the interest of
the mining industry, as it can be used in any craning application of up to 100 t
at 120 m hook height.
'The crane has a number of advantages which are beneficial for the mining
industry,' says Nordengen.
The GTK 1100 has a lifting height of 140 m, a maximum capacity of 100 t, a
maximum working radius of 56 m and can be erected in comparatively small spaces,
by crane standards, as it has a footprint of 18 m × 18 m.
The other components of the tower unit are four spreaders, with a tubular
lattice design, intended for bracing at the top of the tower. Each spreader
includes a tensioning cylinder and a vibration damper.
The GTK 1100 only requires four trailers for transportation to its intended
site and can be assembled in four to six hours. The GTK 1100 is also a far more
cost-effective and flexible crane in terms of site establishment, adds
Nordengen.
'This crane is one of the most sophisticated mobile cranes in the world. It
has a number of unique advantages, such as enhanced site flexibility and reduced
project costs, providing new opportunities for the South African engineering and
construction industry. In addition, it provides the added advantage of being
able to lift ultraheavy loads in small spaces,' he explains.
Nordengen says that Vanguard has supplied heavy lifting and specialised
transportation services to a variety of mines.
'The most recent has involved the transportation of three cold boxes and
exchangers for mines in Zambia and Namibia. The cold boxes were transported on
Vanguards modular trailer and then lifted and rotated 90o into position using a
strand jacking system,' he concludes.
New technologies and products for fine grinding at home and abroad
Platinum Mile, a South African tailings treatment company recently awarded a
contract to Deswik Mining Consultants for the provision of two Deswik 2000s for
its operation in Rustenberg. The two fine grind vertical Deswik mills will
operate on separate circuits with the mills producing 100 and 60 t/h (dry) from
an ore feed of D-90 50-60μm to a product of D-90 25um. The two mills have been
designed to operate at 6.5 and 11.2 kWh/t respectively.
Deswiks scope of work on the project includes the manufacture, assembly,
installation, commissioning and operational training of the Platinum Mile staff.
It is planned that the Deswik mills will be installed and commissioned in
July.
Deswik provides a complete design and construction service for its patented
vertical fine grinding technology. This innovative technology can be used in
concentrators and also as a solution for dump re-treatment projects. The Deswik
mill is used to grind feed material to a specific particle size and
distribution, ensuring improved performance of downstream metallurgical leach or
flotation processes. It has proved to be a highly efficient machine for the
reduction of metal bearing ores resulting in greater liberation of primary
material from much higher froth flotation and leach recovery rates. The mill
uses 50% less installed power than its competitors, and delivers up to 100% more
throughput per cubic metre of mill capacity, the company claims.
It is a vertical stirred bead mill that offers a unique media/product
separation system operating at high efficiency with simple operation and
maintenance. Low noise operation, high degree of automation and data collection
and compact footprint are other advantages. The Deswik mill can produce particle
sizes from a D-50 of 200 μm down to 0.1 μm. This is achieved over a range of
some 200 different products at energy consumption levels as low as 3 kWh/t.
New technologies in fine grinding offer substantial energy savings and AMIRA
project P1003 seeks to provide the hard data which would enable companies to
make decisions on which of these new technologies is most appropriate for them
and what improvements they might expect.
In China, we have pushed the policy of 'green industry''environmental
protection''low carbon life'. With these calls, many industry enterprises make
great and many innovations and inventions to promote the product quality and
environmental protection usage. High pressure micro-powder grinder, superfine
crusher, ultra-fine impact
crusher appear.
Also, opportunities exist to improve liberation of cleaner feed without
harmful chemistry (achieving better than traditional grades that improve
smelting throughput) and to reduce primary grinding on high tonnage streams and
do more regrinding on rougher and scavenger concentrates. These would achieve
lower overall energy consumption by inert regrinding.
Gold mining industry has marched into environment friendly industry
Green Industry is producing environment friendly products or products which
should help improve nature conditions to better. And also during working process
cause minimal damage to environment. Green industry ought recycling waste of
working process (cutting) and recycling waste energy (heat). Green industry
ought to reach wasteless working process. The green industry is focused on
eliminating or significantly reducing dependence on oil, green house emissions,
and toxins. With the more and more serious environment issues, green industry
has become the top industry. It applies in all industry, mining machinery
industry, chemical industry, road construction, agriculture and so on.
Gold mining is one of the great mining industry. Nowadays, gold mining
industry goes into green industry.
Mining for gold has traditionally been viewed as a toxic business that harms
the environment leaving mercury and other harsh chemicals in the atmosphere.
However, this view is beginning to change as gold mining practices turn to fair
trade. The new fair trade standards set social, environmental, and economic
measures to eliminate child labor and minimize the use of toxic chemicals such
as mercury and cyanide. The major goal of this movement is to avoid the negative
impacts that mining causes in the environment while also aiming to help the
millions of people who depend on the gold mining industry for employment.
Many companies are already beginning to produce under the fair trade standard
promising customers that their gold products are ethically sourced and produced
with no mercury or cyanide. Training miners to become more environmentally
responsible has been a key objective for fair trade companies that hope to
create more sustainable business practices. After all, extending the useful life
of a gold mine is not only advantageous to the environment but also to the
business itself. Many fair trade gold businesses in South America are going a
step further by increasing the salaries of their workers, almost doubling the
previous average pay. This will dramatically help the workers and their families
who depend greatly on the gold mining industry.
As of now, fair trade gold is being produced in only four countriesBolivia,
Colombia, Ecuador, and Peru. Other countries in South America have yet to join
the fair trade gold movement including Venezuela who recently nationalized their
gold industry. That may change within the next two years as mines in Latin
America, Asia, and Africa are set to join the fair trade standard. A growing
number of retailers will also join the movement by beginning to sell their gold
jewelry under the fair trade label.
Turning the gold mining industry into a clean, environmentally friendly
practice will not happen overnight as only 15 percent of the global gold supply
is produced under fair trade. Right now, fair trade only covers small-scale
mining projects and has limited impact on the worlds gold supply. New business
practices need to start somewhere and the fair trade mining practice has begun
nevertheless.
Mining is the leading work, mine hoist is one of its arms
The world of mining has more than seven thousand producing mines around the
globe and every year we can find that there are more quickly progressing and
being developed. These mines give us the raw materials needed for the
construction, manufacturing and industries of chemicals and the majority of the
minerals of energy upon which our everyday life is so needed of. So, it's first
and important to grasp the ways to select the mining machinery equipment.
Bringing the hoist to a controlled, smooth stop after a total power failure
is the most important brake function. This has not been a problem for drum
hoists at depths to approximately 3000 feet, nor is it a problem with Koepe
hoists where the system is either in balance when empty or maximum out of
balance when loaded. On a double drum hoist at depths below 3000 feet, however,
the rope weight and conveyance, whether loaded or empty, can create such a wide
variance of braking requirements that a more sophisticated brake control is
required.
Here is a guide to calculate how to size a mine hoist while you know the
desired capacity (TPH) and depth for vertical shaft. The main problem in
selecting a hoist for a given capacity and depth is deciding on the proper skip
load (payload). A larger load hoisted at slower speeds requires less horsepower,
but at the expense of increased rope diameter which, in turn, increases the drum
diameter, gearing, etc. In selecting a skip size, therefore, it is helpful to
know the relationship between skip load, speed, and capacity for the given
depth.
The cost of the headframe, skips, loading pockets and ropes enters into the
economics when selecting skip loads, but these cost changes are relatively
small. (Skip sizes can be varied within limits without changing the shaft
selection.) We are not attempting to make an economic comparison between drum
and Koepe schemes in this manual to select one over the other involves a
complex study which should include the complete hoisting plants. If your skip
weight factor is known, use it rather than 0.75. To determine proper friction
hoist skip weight.
There are several emergency braking arrangements available: varying braking
pressure with depth and/or hoisting direction; firing off a sequence of valves
applying braking as needed according to a feedback rate; setting the brake
rapidly until the feedback system dictates that rate must be held until
stopping.Should the actual speed of the conveyance be greater than required by
the reference signal, the governor applies the brake in proportion to the
difference in signals. If the actual conveyance speed is less than the preset
reference signal, the governor releases the brake.
To achieve the precision of final powder through the effective diameter of a grinding mill
Grinding mills are very important in mining industry. Through the mills, we
can get proper and wanted kinds of powders. Of course, if you'd like to make the
final products more accurate, the effective diameter of a grinding mill is the
key.
The effective diameter of a grinding mill is the diameter inside lining;
i.e., the net diameter. In this case, the mill under consideration is a new
installation so liners will be roughly 3 thick and the net diameter will be 6
less than the diameter inside the shell. Since no diameter has been specified,
investigate a range to find the most suitable. From the table the values of A
are:
For a net diameter of 106 (3200mm) ..................................... A
= 63.5
For a net diameter of 116 (3205mm) ..................................... A
= 79.3
For a net diameter of 126 (3810mm) ..................................... A
= 97.5
For a net diameter of 136 (4114mm) ..................................... A
= 118.5
Step 3: Most overflow discharge mills operate with 35 to 45 percent charge.
An average value is 40%. The value of B from the table for a wet overflow mill
at 40% is as follows: b = 5.02
Step 4: Speed was not specified, so a range of speeds should be investigated
to find the most suitable. From the table the values of C are as follows:
For 68% of critical speed ........... C = 0.1583
For 72% of critical speed ........... C = 0.1724
For 76% of critical speed ........... C = 0.1878
Step 5: Solving for the length of the mill with 026 net diameter, 40%
charge and 68% of critical speed required to draw 1400 HP:
Do you know that: how to finger up the charge volune of a ball mill or rod mill?
In physics, the charge of a volume is commonly described by a quantity called
the charge density or the charge distribution. When the electric field that
arises from the charge distribution exhibits a volumetric symmetry, a handy
relationship known as Gauss's Law may be used to calculate the charge
distribution of the volume.
The charge volume of a ball or rod mill is expressed as the
percentage of the volume within the liners filled with balls or rods. When the
mill is stationary, the charge volume can be quickly obtained by measuring the
diameter inside the liners and the distance from the top of the mill inside the
liners to the top of the charge. The percentage loading or change volume can
then be read off the graph in Figure 3 or can be approximated from the following
equation:
% loading = 113 126 H/ D
where H is distance from top of mill inside of lining to top of charge and D
is diameter of mill.
Maximum power is drawn by a mill when the charge occupies approximately 50%
by volume. However, as seen in Figure 4, the power curve becomes very flat in
the range above 45%. As a result, mills are seldom run with charge levels
greater than 45%.
In rod mills, the charge is swollen by particles of feed which separate the
rods. If the mill is shut down immediately after the feed is shut off, the
charge level will be greater than if the mill had been ground out prior to
shutdown. Because of this, rod mills are normally operated with a 32 to 40
percent charge by volume. In operation, this becomes a 40 to 50 percent charge,
with a bulk density considerably lower than that of stacked rods.
Ball mill charge becomes
measurably swollen only when there is a buildup of large unground material in
the ball mill or when the density of the pulp in a wet mill is extremely high.
Although these conditions are seldom encountered, it is recommended that ball
mills be ground out prior to shutdown for measurement of the charge level.
The development wind of water conservancy blows up the crusher industry
It is known that, crushers are used in various industry, such as chemicals,
metallergy, coal mine, gold and road construction. And also they can serve for
water conservancy. Between them, the relationship of 'mutual benefits'
exists.
For recnet years, there are many positive reports on water conservancy
development. Water Resources budget implementation progress will accelerate in
the second half, especially for infrastructure projects will be the focus.
Industry sources believe that by tightening the impact of the first half of
capital investment is not in place affecting the water, in the second half of
these issues will be resolved, large-scale water conservancy construction
investment projects will be started.
Experience with conventional, hydraulic sand and gravel aggregate demand is
very large, pre-production and living facilities projects, including
infrastructure and construction of road construction, and later the hub
construction of the main building, we need a lot of sand and gravel aggregate
supply. Sand and gravel aggregate industry will undoubtedly continue to benefit.
Only strict customs, in order to cast the qualified projects. Large-scale water
production capacity of the equipment requirements and other conditions are very
harsh, and the gravel field production equipment, crusher selection will
directly affect product quality.
Learned that the water conservancy construction equipment tender, clearly
defined, engaged in sand and gravel production line configured more than 3 years
and 3 years, with construction of the Nissan production capacity of 1000-10000
tons of sand and gravel aggregate companies to bid.
Since ancient times, water conservancy construction is the protection of
national stability, along with the motor car derailment, House crunchy, the
collapse of the bridge collapse and a series of shabby appearance, quality of
infrastructure has been put on the agenda, especially in water conservancy
construction, gravel bone material is the high demands, high-quality sand and
gravel aggregate processing must use high-quality crusher, sand making
equipment, which relates to the use of project quality and project results, but
also a high degree of responsibility for peoples property.
Water conservancy project started to drive the development of major
industrial sand and gravel aggregate, sand and gravel aggregate industry is not
only an beneficiary in the development,crusher enterprises also benefit from the
water conservancy project especially famous crusher manufacturers, but adequate
companies want a slice, it depends on the strength!
Solutions to deal with the blockage problem of crushers of Hongxing Chapter
Crusher are used as the common and usual equipment in mining industry, and
certainly there are many problems when runnig. The crushers will suddenly work
when the phenomenon of blockage, then the crusher block, how to deal with the
problem? Hongxing will give your some tips.
Firstly, crusher block is the continuous use of the common faults that may
exist in the design of the organism itself, but more are caused by the use of
improper operation.
Secondly, feed too fast, the load increases, is caused by blockage of one of
the reasons. So we use the crusher must pay attention to the feeding process,
the meter pointer deflection angle should always pay attention to big problems,
if more than the rated current, indicating that the motor overload, overload a
long time, it will burn out the motor. This happens immediately reduce or close
the door material, can also change the way feed, by increasing the feed to
control the fluxes. Feeders with manual and automatic, the user should choose
the right according to the actual feeder.
Users should always pay attention to the relevant operation of crusher, which
would accordingly reduce the clogging phenomenon crusher．
To make "win-win" throughout the development of China construction machinery industry
Any industry, any equipment is anticipating high efficiency and low cost,
especially for expensive construction machinery industry. The enterprise profits
are anticipated more and more. Construction machinery industry is not only
important to promote the people's livelihood relies on the construction, but
also the achievement of the industry, rapid development of effective protection,
so the development of construction machinery industry is also a priority in the
other. That is why the 'high efficiency' has become the measure an important
indicator of construction machinery products, but now, construction machinery,
'efficiency' is still up in the high-energy-based implementation, which also led
to our construction also in large amounts of energy, manufacturing a wide range
of pollution. How to reach both efficiency and energy-saving in construction
machinery industry, which should be taken into consideration.
Construction machinery industry is a combination of technology, capital and
labor, in recent years as China's construction machinery industry, the
increasing size of the market expansion and our continued efforts to strengthen
infrastructure, economic market segments made higher requirements, including not
only technical, intelligence, including energy saving, environmental protection
and other factors. Nowadays, energy saving has become a hot topic in our
society, it seems to be no energy saving construction machinery industry is also
related to development of the market to catch the express train, the urgent need
to efficiency, energy saving, green, environmentally friendly direction of
transformation. Many energy saving concept has also been applied to construction
machinery products, such as 2009, in the country for the first time introduced
the concept of hybrid energy-saving machinery to study, and developed a new type
of China's first jaw crusher,
crushing than the traditional machine 30% energy efficiency by 25%. It also
confirmed the construction machinery enterprises are moving toward the goal of
energy saving efforts.
After 50 years development, China construction machinery industry forms an
important industry which produces products of 18 categories, more than 4500
specifications and types, and meets the basic demand in domestic market and has
quite a scale and flourishing development vitality. Although there are some
performances, but still in its infancy. China's construction machinery industry
is currently facing energy conversion efficiency is low, the operation is
backward, and serious environmental pollution problems, which gives the energy
saving industry has posed a serious challenge. At present, China's primary
energy consumption has more than 3.2 billion tons of standard coal, crude oil
dependence on foreign imports to reach 55%. Oil consumption is the main area of
petrochemicals, transportation and engineering machinery. Construction
machinery, especially the broken machinery industry, oil consumption is an
important aspect can not be ignored.
But compared with foreign competitors, China construction machinery
enterprises still have some problems as follows, they are: big gap of control
technology; corresponding parts( spare parts, components) non-reaching standard;
insufficient consideration of man-machine engineering; less research and
development input. It is the key for construction machinery industry to
adjusting the product structure in the development process.
In addition, we also take into account environmental issues, the traditional
engineering machinery products have been far from meeting the requirements of
air quality at this stage, to long-term sustainable development, and only
continuous technological upgrading and innovation that the future of
construction machinery essential factor is the environmental protection
industry. In addition, competition in the international market which is not
often due to emissions standards, exports have been seriously hampered. From
this green energy has become China's construction machinery industry, the
problem can not be ignored. But we also see in the domestic construction
machinery enterprises are active in-depth study of a new generation of energy
saving, environmental protection equipment, more and more construction machinery
manufacturers have focused mostly on 'energy-saving''intelligent' two key
word.
Demand and growth rate of construction machinery products have close relation
with GDP and investment scale of infrastructure construction, industry boom
situation is related to the growth rate of investment in fixed assets with
synchronized positive correlation. During the '10th Five Years', consumption
amount of China construction machinery occupied 1.9% of the whole social fixed
asset averagely per annum. The growth rate of fixed assets investment will slow
down during the '11th Five Years', market capacity will expand relatively
insufficiently, and the industry will develop toward rationality
gradually.
It's imperative to reinforce the foreign mineral resources utilization
Mineral resources is the most important foundation our country's economic
construction and social development, it has vital position in the national
economy and security. At the same time, any resource maybe use out. Todays,
energy and resource expolitaion is the serious issue to talk about.
In case the supply of mineral resources disruptions, it will pose a serious
threat on economic, social and national security. However since the 1990s, many
mineral resources consumption growth has approximated or exceed the national
economic development speed. The economic growth made a large demand of mineral
resources. A resource analysis data recently shows, in 2010 ,mineral oil, gas,
aluminum and iron, copper, gold, nickel, sulfur, boron, uranium, phosphorus,
potassium, chromium, asbestos are unable to satisfy domestic demand, by the year
2020, The shortage of China mineral resources will be increased to 39 kinds.
Analysts say that in the coming decades, with Chinese industrialization and
economic globalization, China will become the world's most important mineral
resources consumption country. In the coming decades, comparing with main
mineral demand in our country at present, the main mineral reserves will appear
serious shortage. And mineral resources in Chinese economic and social security
is decline, the paradox of resource bottleneck of contradiction is becoming more
and more serious. To implement the strategy of 'going out' is dispensable, we
should make full use of both domestic and international markets, to satisfy
domestic economic development needs.
No modernized countries in the world can make all mineral resources and raw
materials self-sufficient. In recent years, China's oil, iron ore, copper metal
importing dependence are becoming more and more serious, particularly oil and
iron ore. Long-term excessive dependence on imported is both economic problems
and national security concerns. For the long-term development, only based on the
resource security, the national security is guaranteed. Implementing the
strategy of 'going out' will extend more space and wider range of areas and at a
higher level participating in international economic and technological
cooperation and competition domestic and abroad. Make full use of two kinds of
resources, two 'markets', build all-round, mineral resources and sustainable
supply system and improve mineral resources sustainable development of national
economy is the issue we should concern.
We Henan Hongxing Machinery are the famous manufacturer of mining machinery
equipment in China and have been titled 'China famous machinery brand'. We have
passed through ISO9001:2000. Our always focus on technology innovations, product
design, development, production, installation and maintenance. At any time,
clients are always the first.
For ore dressing process, there are two ways: flotation process, magnetic
process. Magnetic separator is
used in magnetic procell. It applies to wet magnetic separation of materials
below 3mm such as the magnetite, pyrrhonitite, roasted ore, limonite，ilmenite.
Also used for coal, non-metallic minerals, building materials' remove working.
Magnetic line of the magnetic separator uses high quality ferrite materials
or compound with rare-earth magnet, the average magnetic induction is 100～600
MT, we can provide downstream, semi-current, counter-current, a number of
different forms magnetic separator according to the users' need. You can use
them in industries like mining, and smaller versions are widely-used in
scientific labs to process some kinds of samples. Numerous companies make
magnetic separators for assorted applications, there are some variations
intended for website visitors to select from,jaw crusher, according to the
application and needs. This sort of products are which is available from
companies which are experts in industrial processing equipment, therefore it may
be ordered completely from manufacturers, where individuals have customized
needs.
An elementary magnetic separator is made up of magnet of some sort. As
materials are passed below, over, through, or round the magnetic separator, it
attracts undesirable impurities, pulling them out and cleansing the process
stream. Magnetic separators might be ferromagnetic or paramagnetic, according to
the needs, and in many cases materials will likely be passed through both
varieties of magnetic separators. They may differ in proportions from tabletop
separators found in labs to massive drums found in recycling facilities.
One of several common uses of a magnetic separator will be the eliminating
so-called tramp metal,Magnetic Separator, undesirable iron that may foul a
procedure stream. Magnetic separators may also be employed to remove materials
which may damage or foul equipment, inside a pre-processing step. Separators may
also be used to sort various metal, using a group of separators varying in
intensity to get out strongly and weakly magnetic materials at different
times.
Like other devices used in processing materials, a magnetic separator must be
properly maintained and operated as directed in order to be effective.
Maintenance includes clearing the separator to remove magnetic materials it has
collected, along with periodically oiling moving parts. In the case of
electromagnets, it is also necessary to make sure that emergency shutoffs and
other safety features are in operational condition, so that the magnet can be
turned off in the event that a problem develops on the production line.
As we know, corporate events are everywhere and important for an enterprise.
In the occasion, there are more business parters and corporation chances to help
the enterprise. Managing corporate events takes skills and dedication, their
concepts and corporate event planning will take your business to the next level
whether its a elite corporate event, a seminar or conferences to get the word
out there and promote your company, an expert planner can help you. Any type of
gathering needs a great deal of planning and prior arrangements which will
result in effective management and profitable performances. With the
advancements of new ways and techniques, the demand for beautiful and modern
functions has been in high demands. This is feasible only with the help of the
best corporate event management company.
From many years event management company play a significant role when it
comes to creating breathtaking and meticulously well organized events for their
clients and guests to enjoy and make a great and long lasting impression among
the co-workers and the attendees. This is why; organizing corporate events is
very much sought after by many companies in a more professional way. With the
help of an efficient team of planners and qualified staff available to service
you, delivering corporate events that leave you breathless with a fresh new look
and feel enabling you gain immense popularity as well as profitability with a
successful event.
Below we will get to know the various uses and services of a corporate event
management company and understand the importance of hiring one of the best
luxuryevent planners to conduct your corporate functions. Here are the lists of
some of the many services offered by a bespoke event management company:
A luxury event planner makes every and any kind of arrangements for your
event and make sure that nothing is left untouched which should be managed, the
last moment details will be looked after rather rushed at the peak hour.
They are highly qualified professional and that is why they take care of
every requirement needed in an event with such class and ease.
With the help of efficient management team members, these planners bring
effective solution to your every problem with their bespoke services approach.
Right from the decorations, venues, to catering or the invitations they can
manage everything without any delay.
Being experts they do not need much time to make the proper arrangements and
planning decisions, it is recommended to call then well in advance to avoid
missing out on some subjects that might require more time, regardless you can be
relaxed from day one to the end with their help, be assured that they will take
care of everything for you.
For any event the theme is one of the most important aspects to consider when
planning, inform your luxury event planners as much as you can to get exactly
what you envisioned. With their dedicated team of planners they will take care
of every theme details for your event, the decoration, catering, menu's, music
or any specially requested services, everything will flow nicely with the theme
and you'll be able to see your vision come to life.
Corporate events are essential activities in business circle. Do you worry
about them? Do you want to make the corporate events helpful to your company? I
think that the paper will benefit you to a great extent. The right ways you
choose to attend to one corporate event can surely make your performance and
business better and more effective.
Fierce competitions make mining machinery industry accelerate development and expansion
There are many disasters and risks for recent years, such as earthquake,
waterlog, drought, war. Along with these, global economy has in great
fluctuation. Of course, one coin has two sides. There are disadvantages and
advantages brought. As a result of the financial crisis, many enterprises are
facing domestic and international operations, the dual crisis of survival. It
also directly contributes to China's mining machinery industry, competition, and
if the rest on its laurels, inert, business, living a double crisis of the event
so difficult mining machinery industry. How to talent in this competition, to
achieve a breakthrough? Accelerate scientific and technological innovation is
the unquestionable choice.
A) Infrastructure development has brought opportunities for the mining
machine
The use of mining machinery and basic facilities in areas of interest-rate
coherent future, there will be a great market. Moreover, the financial crisis,
China adopted a series of stimulating domestic demand and ensure a stable and
rapid economic development policies and approaches, in which the State
Department recently dropped into 4 trillion, 'increased security' approach,
pulling the premises to the Government's new round of investment enthusiasm, '
livelihood projects 'to become the number one investment priority.
Government investment plans in the premises, the focus is still railways,
highways, power plants, real estate and other infrastructure projects, which are
in China mining machinery industry with close contact. This is our country's
supply of mining machinery industry to develop new opportunities, but also put
forward a higher request, require mining machinery industry to speed up
scientific and technological innovation, progress, science and technology
content, in order to compete for the future skill areas with more open
markets.
B) Low-tech, impeding the pace of development of the industry
China's mining machinery in general and the international advanced level to
be out of date compared to 15 to 20 years, the majority of product techniques
the origin of the last century since the mid-80s imported from abroad. The
domestic market, mining machinery products in the market occupation rate is less
than 80%, at the entrance of the products are mostly large, precise, sharp and
complete sets of very strong products, such as Shearer, large and efficient
equipment, respectively, crushing and grinding equipment, full - cross-section
with boring machine and other products.
Mining machinery industry, the basic technology is not strong, reform and
opening up, mining machinery areas has been progress in the market for
technology products as the skill level of the major roads. Looking around the
world mechanical design of the development process, important thing is to
stand-alone product design to the stand-alone product design process and then to
complete sets of equipment designed for evolutionary process. China's general
mining machinery manufacturing just completed a stand-alone product design and
manufacturing, device applications, process flow design done by a professional
institute, stand-alone product nature of the request process are also made by a
professional design institutes and to assist in the completion of manufacturing,
which resulted in equipment fabrication plant and equipment, the gap between
application part. Thus, in the current mining machinery production sectors and
enterprises designed to process the case of relatively thin, except in their own
areas of expertise as soon as conditions are good, organized effort to enter
into the role, should be used with foreign companies and national professional
institute to establish a different situation combined, including the formation
of groups, the Commonwealth, the introduction of technology, the introduction of
qualified personnel and other measures, at least in a fight to the project on
the use of integrated design approach, first to participate and then progress,
and achieve win-win situation, and similar enterprises in most of the
consequences of recklessly tender bad.
C) Network on the impact of mining machinery business
90 years since the 20th century, the emergence of governance in the developed
country wave of change that swept a new era of industrial revolution, this is a
network of economic globalization and the information tag into the Industrial
Revolution, it poses an unprecedented impact on the original production methods,
changes in the original business model. Enterprises to adapt to this change in
the networked environment to operate governance has become the irresistible
trend of the revolution, the traditional enterprise network to meet this
in-depth treatment, the turn facing a new opportunity and provocation.
Traditional enterprise networks have a significant impact, special is a mining
machinery business, the network can not be compared with other traditional
methods peculiar upper hand, China Mining Machinery Network (www.ccdrc.cn) for
the supply of mining machinery business services.
However, the future of mining machinery industry will present two important
strategic groups: the supply of full range of products and services,
generalist-based businesses and product or market segment expert-oriented
enterprises. At present, the domestic leading enterprises and transnational
corporations is also comparable to the strength compared to the weak, while
those who concentrate on the market in some products and the formation of core
competitiveness, and to gross profit of the expert-oriented enterprises are more
likely to survive in the fierce competition down. In the mining machinery
industry, the new competition format, a considerable number of domestic
enterprises will be the multinational production and marketing system in a link,
and a small number of products and services with the core competitiveness of
enterprises will likely become a confrontation with transnational corporations
outstanding.
Consequently, at the new time, the future and scope of China mining machinery
industry are both bright. The machinery enterprises should improve the product
technologies, intensify network marketing, and promote enterprises competence
and services. Todays, consumers maybe take less consideration on products price,
but take more on product services and product brand. Totally, comprehensive
development of an enterprise can take the advanced rank in the world.
In mining industry, safety exists along with risks: We must master it.
As we learn, miners continue to die in accidents in China, Russia, America,
and elsewhere. As we learn, academics and corporate apologists generate
technical papers on management by a risk-based approach. We'd like to ask that:
Will or won't it go bankrupt paying for the cleanup?
The phrase 'safety is built from the ground up' may seem like a cliche. But a
group of mining companies is taking the message to heart with a concerted
campaign to work with original equipment manufacturers (OEMs) to ensure that
safety is incorporated into the design of mining equipment. The group meet with
OEMs on a regular basis, typically once a year, bfinging forward recommendations
for design changes to equipment in order to improve sagety. While the initial
focus was on surface mining equipment, EMESRT has expanded into three other
equipment areas - exploration drilling, underground hard rock, and underground
coal and soft rock.
Safety risk exists along with enterprise's loss. In another word, once one
mining company disaster is reported, its fame, enterprise image and finance all
face the risks. In addition to this aspect, there is another risks. Thus, mining
enterprise has to learn how to live with these risks. You cannotafford to do it
all, so take the risk and get the probabilities right.
All too often these prophets of probability prevail. And equally often their
statistics are proven right: something fails and somebody in the mine dies. Or
worse, they are proven wrong; and something fails, and many people at the mine
die. A committed mining statistician will tell you: There is no suchthing as a
risk- free world. Thus we must incorporate risk, probability, and consequence in
our real-world view, analyses, and decisions. After all, we will all die
sometime, the tailings will flow to the ocean eventually, and the pit will
become a part of the topography.
The fascinating thing to contemplate in the light of coal mine deaths,
tailings dam failures, and oil rig blowouts, is this: What, if anything, do
these recent, admittedly spectacular events, mean to other mining projects? One
blogger recently asked: Can the Alaska Pebble Mine survive BP? In other words,
how can one defend probability in building 700-ft high slimes dams above the
salmon hatchery? In the enormity of time, any probability offailure, no matter
how small, will come to pass and those baby salmon are toast.
In search of a risk-free world, in deference to the near-demise of BP, and in
recognition that extreme statistics do play out, are we headed to a new mining
world; one where only reasonable projects involving rich ore bodies in dry,
non-seismic parts of the world proceed? Are we headed to a more
conservativeperspective where the old mining risk profiles are no longer
acceptable? Is mining going to be stung by the BP oil spill to avoid projects,
to do better project engineering, and to try to make living near andworking on a
mine as safe as commercial flight? Funny how we accept that commercial airlines
shouldbe safe, but happily accept far less in a coal mine, in a slimes dam, and
on an oil rig.
In open-pit coal mining, how to manage energy consumption efficiently?
Open-pit mining follows the same sequence of operations as underground
mining: drilling, blasting, and loading and removing waste and ore. Open-pit
mining follows the same sequence of oprations as underground mining: drilling,
blasting, and loading and removing waste and ore. Opencast mining is highly
mechanized technological process which, due to low manpower, high production
outputs and engagement of heavy-duty mining mechanization requires a very high
consumption of power, spares and materials. Those facts indicate that
rationalization of the consumption of power and materials requires specific
attention in scientific senses.
General prognosis that deals with the development of surface exploitation of
coal in Yugoslavia, along with ecological issues also covers large energy and
materials consumption in this field as a strong limiting factor. Such estimation
is based on the ever increasing requirements for energy. spare parts and various
materials that in surface exploitation of coal are growing with increase of the
physical volume of production. The complex analysis of the factors influencing
consumption of energy and materials in the surface exploitation recognizes three
groups of main factors such as natural. technological and organizational.
The group of natural factors covers separation of deposits, relief of
terrain, coefficient of overburden, physic-mechanical properties of the deposit,
depth of mining, mineral materials quality and length of transportation roads.
Technological factors include structural equipment design, project designs.
installed power, method of excavation, loading and transportation, method of
piling, development of excavated faces, useful value of mined materials and
mineral processing. Quality mineral materials and the length of transportation
roads can also be listed among the technological factors. The organizational
factors are represented by: managing of process, qualification of stuff,
maintenance of mechanization and monitoring the energy as well as material
consumption. Certain open pit mines initiate the study of a series of mutually
interlinked issues concerning technology, efficiency and organization of
production, thus overpassing the accepted principle that the planning standards
are only based on the previously achieved consumption standards. Defining the
modem methods of monitoring energy and material consumption might be considered
as the general scientific-research direction in surface exploitation for the
purpose of decrease in overall costs and better productivity.
Transportation of overburden, within the limits of the open pit surface
itself. to internal waste dump and crushing equipment is carried out by dumper
capacity from 50 to 70 t, and volume of loading frame from 30 to 50 m3.
Transportation of overburden to the external deposit is carried out by belts
with previous crushing of material by crushers. At the present stage of
exploitation, six transporters were installed, three of which being permanent
and three mobile, in a total length of around 4500 m. The said transportation
system also consists of below-level dump stackers and above- level dump stackers
having the capacity adjusted to transporters. Coal transportation from open pit
mine to crushing and separation plant is also performed by dumpers capacity of
36 t, volume frame of 26 m. In this plant classification of coal is made
depending on its market purpose.
While monitoring electric power consumption the data used refer to periodical
control of such energy consumption and a comparison with the planned quantities
was accordingly made, having in most cases quite a negative effect, as the
adequate interventions failed when a large consumption was in question. Somewhat
less complex system of evidencing was applied when monitoring fuel consumption,
particularly in case of open pits having their own pump stations. Rarely,
complex factors influencing the consumption of energy and material were analyzed
such as the efficient technological processes and efficient organization of
labor. Since recently, consumption of energy and material at open pits in
Yugoslavia has become more actual.
Of course, equipment quality is also the factor to affect the energy
consumption. Todays, Hongxing has many new types of coal mining equipment: VSI
coal crusher, ultra-fine micro powder grinder, high pressure Raymond mill, super fine impact crusher.
For transporting coal and ore successfully, there is one new system
Transportation exists and is seen everywhere. Some transportation costs
little, while some costs much just like machinery transportation. And also some
transportation is complex. Facing so many types of transportation, there are
various system to deal with them. As to coal and ore transportation, a new type
of transport system appears.
The new system is now available that could bring incredible benefits to the
mining industry. The system can potentially eliminate the need for constructing
new railways to transport coal / ore from the mine to the port (or other
destination).
The great thing about it is that the same system can also be used to
transport workers to / from the mine, in many cases eliminating the need for
expensive fly-in-fly-out (FIFO) transport. The system can also be used to
transport supplies to / from the mine.
Another major benefit for the mining industry is that this system can
eliminate the need for expensive port loading infrastructure because the
transport modules can load directly into ships.
This system is also an answer to some of the criticism received from the
environmental movement. The system can be installed with minimal earthworks and
can cross sensitive environmental areas with minimal impact. The system is also
extremely fuel efficient.
The cost to install the system is about half the cost of installing a
conventional railway line. If you combine the savings from line construction and
eliminating the port requirements, the savings amount to hundreds of millions of
dollars. In some cases, this can mean the difference between proceeding or not
proceeding with a new mine development.
Problems are anytime, but ways to solve them are developed by human's
intellegence. With advanced technology, any difficulty can be resolved and
performed successfully.
How to prevent and settle the problems in running a hammer crusher
Hammer crusher is mainly broken by the shock effect of the material. The
grinding process is more or less so, the material in the grinding machine, was
impacted by high speed rotation of the hammer and broken material, broken,
obtained from the kinetic energy of high-speed hammer to the deflectors body
structure, screen, while the material of conflict, have been repeatedly broken,
the gap is smaller than the display of downloaded material from a distance, the
larger the materials in the bar of the screen again by the impact hammer,
grinding, pressing and crushing, the material was produced from the difference
obtained the required size of the product.
Any machine has one part or parts which are easy to wear down. So, as to a
hammer crusher, how is the situation and how to solve the problems?
Hammer crusher failure and exclusion:
1) bearing overheating
Reasons: lack of fat, too fat, fat dirty degenerate, damage to the
bearings.
Remedy: fill in the amount of fat, grease the bearings must be executed
within 50% of its space, cleaning the bearings, fat replacement, replace
bearings.
2) the particle size is too big
Reasons: excessive wear of the hammer, the projection of the fracture.
Remedy: Change the hammer to replace the bar screen.
3) reduction of production
Reasons: the projection of the gap is blocked, irregular feeding.
Remedy: parking, cleaning up the gap in the screen of the obstruction, adjust
the power agencies.
4) percussive links
Reason: pin loosening, wear elastic ring;
Solution: stop pin and tighten the nut, replace the snap ring.
5) drum machine internally generated
Reason: no broken the device materials, fasteners loose line, impact hammer
in the lining, hammer or other broken parts.
Remedy: parking, cleaning the grinding chamber, check the lining of the
setting and the hammer and the display of the gap, replace broken parts.
6) the vibration of the machine
Reason: The replacement of taking the hammer and wear or sub-cone rotor
static balance requirements, broken rotor imbalance hammer, pin bending and
breakage; Triangle Park, drive or cracks, loose screws.
Remedy: Remove the hammer, weight, select the hammer, so that each hammer
hammer hammer axis relative to the total weight of the hammer to its total
weight of the axis is equal, meeting the requirements of static equilibrium,
hammer replacement, pin replacement, repair or replacement welding, screw.
