Brief Explanation of Hydraulic System of Jaw Breaker

Jaw crusher mainly consists of frame, supporting device, the working mechanism (fixed jaw plate and moving jaw plate), drive mechanism (eccentric connecting rod, thrust plate, flywheel and eccentric shaft), safety device and adjusting device of ore discharging port (wedge adjustment device, gasket adjustment device). The working parts of jaw crushers are two jaw plates. The first one is the fixed jaw plate (fixed jaw), vertically (or the upper end slightly camber) fixed in front of body wall, and the other mobile jaw plate(moving jaw) is located tilt and connected with fixed jaw to form the next upper big and lower small crushing chamber (working chamber). The mobile jaw plate moves towards the fixed jaw plate to do periodic reciprocating motion, sometimes separately and sometimes closely. During the Separation, the material going into the crushing chamber and the finished product is discharged from the lower port; when they are closed, the material is squeezed between the two jaw plates and broken by bending and splitting.
During the working process of the jaw crusher, the rotary of cam gear drives the plunger type injection pump to supply high pressure oil to the system. The oil pressure of the system will be determined by the rating nut of the oil pressure adjusting gear according the biggest crushing force allowed for the crusher. When the oil pressure goes up, the plunger compression spring in the oil pressure adjusting gear will shift to the right side, and drive the plunger injection pump plunger to rotate in the anti-clockwise direction, shorten the effective path of the plunger in order to decrease the oil injection amount and restrict the system oil pressure to go higher. On the contrary, when the system oil pressure decreases, increase the oil injection amount in order to prevent the decrease of the system oil pressure so that the oil pressure of the hydraulic system is kept in the original set state. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like mineral impact crusher, Henan Hongxing is always doing the best in products and service.crushers: http://www.hxjq-crusher.com/1.html
When the crusher is working normally, the pressure functioned on the working cylinder by the toggle plate of the crusher is smaller than the thrust of the hydraulic cylinder, and the movement calve is in an upper extreme position, and the toggle plate will not move so that the crusher will crush materials normally.
If some uncrushable materials go into the crushing chamber of the jaw crusher, the crushing force will increase. At this time, the pressure functioned on the working cylinder by the toggle plate of the crusher will be higher than the thrust provided by the hydraulic cylinder, and the oil pressure in the high pressure oil chamber will increase in a second, the throttle valve will drive the movement valve to move, and the system will leak oil in order to limit the biggest thrust of the toggle plate in order to protect the machine.
After some uncrushable materials go into the crushing chamber, limited by the biggest thrust provided by the working cylinder, the piston will move to the right side and withdraw, and respectively the ore discharging mouth of the crusher will become bigger. Because of the mesh of the movable jaw of the crusher, the uncrushable materials will gradually move down and finally be discharged from the ore discharging mouth. If the products produced by the uncrushable materials in the crushing chamber are not qualified, then the workers can remove them with auxiliary device.

Circular Vibrating Screen Shows Perfect Performance

According to the distance from the resonance frequency, the vibrating screen is divided into the the resonance screen and inertial vibrating screen. Currently, in the screening operation of coal industry, the inertial vibrating screen is widely used. Based on the characteristics of the work trajectory of the screen surface, the inertial vibrating screen is divided into circular vibrating screen and linear vibrating screen. Circular vibrating screen is mainly used for the pre-screening and final screening; linear vibrating screen is used for dehydration screening, deshxjq screening and sculping screening. Circular vibrating screen has more than 40 years of history in coal production, the initially eccentric and simple inertia style are the prim stypes.
Recent years, with the continuous development of economy and the increasing social demand, our mining machinery industry makes great and new development, for example, the equipment design and manufacturing level goes higher and higher, the renewal speed of vibrating screen, sand making machine, mobile crushing station, building waste process equipment and other new type equipment is faster and faster. All of these can not only bring new blood for vibrating machinery industry, and also push the further development. Circular vibrating screen is one of light fine screening machinery with the rapid development speed.
Advanced technology is the motivation of fast development. On the aspect of product design and manufacturing, Henan Hongxing always takes up the core place depending on the advanced technology. With the market trend, Henan Hongxing keeps up with the famous enterprises worldwide, and it designs and manufactures big-size linear vibrating screen, high-frequency screen, circular vibrating screen and other new categories. Additionally, Hongxing successfully designs and produces the biggest vibrating screens with the most advanced technology in China, and some new products achieve international level. Among the vibrating screens, circular vibrating screen is designed and used as one high efficiency vibrating screen which does circular vibration and has multilayer number. This new type vibrating screen adopts cylinder asana eccentric shaft vibrating exciter and partial block adjustment amplitude, and it has many advantages: long material screen drip line, various screening specifications, reliable structure, strong vibration force, high screening efficiency, low vibration noise, easy maintenance, safe operation and so on. The circular vibrating screen is widely used for product classification in mining, building materials, transportation, energy, chemical and other industries. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like china sand washer, Henan Hongxing is always doing the best in products and service.feeder machine: http://www.crusher-machine.com/n142.html
Linear vibrating screen is developed on the basis of circular vibrating screen, which is also known as the dual-axis inertial vibrating screen. In the initial stage, driven by the single-motor, the gear is forced to rotate to make the double rollers do the relatively synchronous directional rotation to create the excitation force. In this case, the lubrication and sealing of the geal are easy to have problems, affecting its service life. Therefore, currently , the linear vibrating screen driven by dual-motor without forced drive is widely used.

Green Crusher Conduces to Adjust Mining Market

The so-called competition is one good phenomenon, which can dump those manufacturers polluting the environment heavily, creating sound noise and owning low efficiency, and at the same time, the new type of crushing equipment with good performance characteristics of high efficiency and energy saving is brought into the presence of the human being. So we must obey the new orientation of producing much more crushing machines with advantages of environmental protection and energy saving and improving the ability of upgrading and updating the technology of the company, especially for those manufacturer making mining machinery which should put much more attention on improving the quality of the products and the ability of innovation.
Recent years, mining machinery industry develops fast, especially mining crushing equipment. With the supports of series of government policies and financial capitals, together with the promotion of railway and high-speed way construction, crushing equipment (such as PE series jaw crusher, hydraulic cone crusher, impactor crusher and so on) increases more applications, and will become the equipment with the most core, highest technology and greatest profit. Many small and middle size enterprises start counterfeit production and neglect the production innovation and technology level, which is not one responsible business and makes negative effects on the development of mining machinery industry. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like stone crusher, Henan Hongxing is always doing the best in products and service.spiral chute separator: http://www.hxjq-crusher.com/S257.html
We can say that it's very chaotic for domestic crusher market. Due to unscrupulous competition, mining machinery industry's profits are taken by mining enterprises, advertising agencies and vendors. If this condition cannot be controlled and regulated, the whole industry will face the collapse. The call of 'Green Mine Standard' can improve and regulate the confused condition in the machinery industry. But the standard is very serious and it's difficult to achieve for enterprises with low power.
Aspect on Comprehensive Use of Resource
According to the plan and design for exploiting mineral resources, the resource development and comprehensive use are finished successfully, which make the economic technological level take the better rank in domestic mining machinery industry. Additionally, we should save the resource, protect the resource and carry out comprehensive use of mineral resource so as to make the resource utilization achieve the advanced level in the same industry.
No matter which generation you are in, you should know what the most important thing is in the reality. For a country, the development is just like what we have said just now. The tertiary impact crusher made by our company owns some advantages of energy saving, good density, preventing the dust from overflowing, easy operation, big reduction ratio, high efficiency, small discharging size, easy structure and simple operation.'

Stable and Durable are Main Features of Ball Mill

Energy-saving ball mill instantly spread all over the country in 2012, which also bring users a lot of trouble. Hongxing mining machinery factory give you details about the selection guide of energy-saving ball mill.
With large mineral processing equipment manufacturer, large coal storage, cement company established in succession,At the same time to ball mill equipment also puts forward more higher requirement,On the road of development are in urgent need of processing capacity more big,high efficiency,Safe and reliable operation of the equipment,xingbang machinery as one of the specialty supplier,With its excellent advanced technology, high efficiency and energy saving features and perfect after-sales service, welcomed the large number of domestic and foreign customers.
Energy saving ball mill four criteria in use process maintenance
1:Keep clean in gear motor, adjust, tighten loose parts, in case for looseness and aggravate zero department A wear or notice cause the loss of spare parts.
2:Selecting suitable lubricating oil,Especially the input power more than 11 kw for the reduction motor shold note in the load gear oil.note check the oil, hydraulic oil, coolant and oil level and quality frequently, and note to check the tightness of the whole machine.During the processing of check,find lacking of oil then should find the reason. At the same time,Should strengthen the energy ball mill all lubricating points lubrication ,Suggest that in the running- in period, every week to lubrication point filling grease (special request except).Vertical band oil pump The speed reducer power connection that should pay attention to pump direction of rotation, the clockwise rotation for the correct. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like sand washer, Henan Hongxing is always doing the best in products and service.grinding miller: http://www.crusher-machine.com/n133.html
3:At the ending of run-in period,we should make forced maintenance with the machine,do it well for the check and adjust of the energy saving ball mill,at the same time pay attention the exchange of the oil.At the saying goes,Talent Development,so for the energy saving ball ill, it should be Talent development machine.The ball mill have the feature of big size,high height,this can make the foundation subsidence and displacement.In the basic set by monitoring settlement point; Were observed , found a sinking, carries on the adjustment.
As manufacturer of mining equipment, it’s even more obliged to set green industry as its developing plan. As is known to all, ball mill consumes higher energy than other mining equipments. This requires us to reform existed technology for the purpose of gradually and stably achieving the amelioration of ball mill’s energy consumption. Energy-saving ball mill is the ideal choice without any doubt. Its application will effectively reduce energy consumption, thus energy conservation and emission reduction is achieved.
Compared with traditional ball mill, its matching motor power can reduce 18-25%; It can save lubricant by 70% and cooling water by 90%. Generally it saves energy by over 20%. Normally there is no need to change the main bearing within 10 years. A great deal of maintaining cost is saved. The main bearing is lubricated by grease which is convenient and clean, thus heavy metal pollution is avoided. This machine doesn't change any technical parameters, nor ball mill's assembly size and installation size. It's applicable to the existing mill's energy-saving technical renovation, as well as the manufacturing of the new ball mill.

Overall Process of Ore Dressing in Mining Industry

The flotation process is controlled by X fluorescence load flow analyzer, automatic ore pulp PH value adjustment, automatic medicine addition, ore level control and air inflation. At present, countries abroad adopt large-scale distributed control system ranging from detection instrumentation to process control. The relative advantages of automatic control compared with those of manual control are higher processing capacity, a 25%-50% labor productivity rise, low cost and high recycle rate. However, we have proven reserves of 53.1 billion tons and potential reserves of 50.1 billion more with industrial reserves accounting for 24.5 billion tons. A large proportion of ore coexists and associates with each other. The lean ore occupies a considerable proportion of 97%. Our nation is rich in iron ore resource. Since rich ore is little, the average geological grade is only 32.6%, lower than the average world level with n percent. Consequently, almost all ores need dressing and enrichment. Moreover, due to the reason that 50% of lean ore is weak magnetic ore, austere challenges are posed to ore dressing work.
The production of ore dressing is a complex process, with the transition and transformation of substance and energy. It has the characteristics of time-variation, large lag, complex mechanism and lots of affecting factors, with the performance of consecution in large range, nonlinearity and tight coupling, which is complex and indeterminate. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like mobile crusher, Henan Hongxing is always doing the best in products and service.mining machine: http://www.hxjqchina.com/n99.html
The product process of raw ores is to sieve the raw ores to the ore fines of 0 to 15mm and ore lumps of over 15mm. the ore fines are sent to the strong magnetic cylindrical ore storage bin by the belt conveyor as the materials of the product of strong magnetic separation. The ore lumps are sent to the bunker in front of the furnace through two-times screening by the belt conveyor as the materials of the roaster.
The process of roast working of the shaft furnace is to send the ores to the shaft furnace to be roasted, which can separate the ores to the waste rocks and valuable ores. The waste rocks are sent to the hillock by the belt conveyor and the winching system, while the valuable ores are sent to the weak magnetic cylindrical ores bin as the product of the materials of weak magnetic separation.
The working process of ore grinding and magnetic separation can be divided into the strong magnetic separation and weak magnetic separation. The primary of the ore grinding system is a closed circuit made by the ball mill and the separator, while the secondary is a closed circuit consisting by the ball mill and the water cyclone. The undersize sieves are embodied in both of the two ore grindings to control the particle sizes feeding the secondary from the first separation. The ore fines or the roasted ores are classified by the classifier after grinded by the ball mills.

How to Produce Best Clay Bricks with Mining Machines?

ball mill industry will increasingly high-endimplementation of building energy efficiency has great significance on the construction of ?two-oriented? social requirements to implement the party?s congress.Since 1973 the first time the world?s energy crisis, the energy-saving potential of national experts on each area of ??energy use may produce results show that the building energy use with energy-saving potential of the largest field of energy use.Building energy consumption, including the architectural construction energy consumption and building energy consumption.The energy consumption of building construction is a one-time production of energy, including building materials and equipment for the production of energy, construction and installation of energy consumption; building energy consumption is a long-term energy consumption for many years, with building heating, air conditioning, lighting, hot water supply, etc. energy consumption.Building energy consumption energy consumption is much larger than the building construction.
1.Clay Preparation
Tempering is to add water into the clay soil in order to make it more workable. Too much water added to the clay mix will decrease quality, though.
2.Disintegration and Crushing
An alternative to tempering is disintegration or weathering, which involves allowing clay to dry in the sun and accept moisture from rain and dew. The repeated drying and moistening of clay will bring clay to a plasticity and workability appropriate for brickmaking. Crushing will make the mixture more homogeneous. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like sand washer supplier, Henan Hongxing is always doing the best in products and service.rotary cement kiln: http://www.crusher-machine.com/n163.html
3.Mixing of the materials
Mixing is done to make the clay soil homogeneous and smooth. There are different techniques that can be used to do this, including using animal power or letting humans mix the clay with their feet. Different admixtures such as coal or sawdust can be added to the clay for two beneficial reasons: 1) reduce cracking during drying and 2) reduce fuel usage during firing.
4.Molding of the bricks-Important step of Standardizing the Brickmaking Process
Bricks should have standard characteristics if they are to be used in construction. For example, contractors may buy bricks from several different sources for one project: the bricks must be the same size or there will be problems matching the construction of different sections of the building. Moreover, a standard brick size will allow a contractor to more accurately determine how many bricks will be needed for a project. A new brickmaker, therefore, should follow local standards, checking with other brickmakers in the area or with local authorities or construction contractors.
5.Shrinkage of the size of bricks
When determining the size of a mold for brickmaking, a necessary consideration must be shrinkage. Bricks will shrink when drying, so the mold size must be larger than the intended finished brick.

Mobile Crusher id a Good Helper for Construction Waste

With the development of the construction industry, the Concrete waste is growing impact on the environment, so many buildings investors began to focus on the concrete waste processing, Hxjq Heavy Industry manufactured the concrete mobile crushing plant makes the implementation of environmental indicators become possible.
'Hongxing heavy machinery has launched a mobile crushing station, which has many irreplaceable advantages.
First of all construction waste dumping are relatively concentrated, handling on-site space is limited, selection of mobile crushing station to resolve this problem, the device is equipped with wheels,can enter the crushing spot dealing with crushing at any time.Do not have to be transported out of the material, save cost. Taking small area, can enter the site at any time.For construction waste, mobile crushing station to configure flexible, depending on garbage site, design modifications, or special mobile crushing station configuration, suitable for construction waste crushing.
Hongxing Heavy Machinery has devoted in the manufacturing of Mobile Crushing Plant for over 20 years, our processing plants work very well in our clients' working sites both at home and abroad. We supply you qualified equipments and service. For more information about the mobile crushing plant, you can contact Linda.
Hongxing heavy machinery has launched a mobile crushing station, which has many irreplaceable advantages.
First of all construction waste dumping are relatively concentrated, handling on-site space is limited, selection of mobile crushing station to resolve this problem, the device is equipped with wheels,can enter the crushing spot dealing with crushing at any time.Do not have to be transported out of the material, save cost. Taking small area, can enter the site at any time.For construction waste, mobile crushing station to configure flexible, depending on garbage site, design modifications, or special mobile crushing station configuration, suitable for construction waste crushing. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like stone production line, Henan Hongxing is always doing the best in products and service.circumgyrate cement kiln: http://www.china-hxjq.com/n279.html
Hongxing Heavy Machinery has devoted in the manufacturing of Mobile Crushing Plant for over 20 years, our processing plants work very well in our clients' working sites both at home and abroad. We supply you qualified equipments and service. For more information about the mobile crushing plant, you can contact Linda.
With flexible and versatile throughput capacities, the construction waste crushing plant produced by Henan Hongxing Mining Machinery Co., Ltd. makes construction debris recycling easier and more efficient than ever before. This unique and evolutionary recycling solution even has the functionality to remove any metal contamination from the crushed material by means of magnetic separators. With good quality and excellent performance, Hongxing construction waste mobile crushing plant has been widely used at home and abroad, and gets high praise from its users. There is no doubt that Hongxing products will be your wise choice and never let you down.

How to Choose Standard Impact Crusher ?

Theoretically, the yield of the coarse impact crusher can be calculated according to the crushing materials produced through one circle of the rotation of moving cone. In fact, the amount of the discharging material in the unit time not only relates to the size of the circle, but also relates to the density degree of the material. Obviously, this assumption does not fully reflect the actual situation. To this end, in the actual production, we usually use some empirical formula for calculation. The crushing process of the impact crusher is similar to the crushing process of thejaw crusher. Therefore, the calculation method of the jaw crusher still can be used in the calculation process of the coarse impact crusher. The derivation method of power needed by the coarse impact crusher in the theory is basically similar to that of the jaw crusher.
Impact Crusher is a new type and high efficiency crushing equipment, with the small volume, simple structure, high crushing ratio, low energy consumptipon, evenly discharging size and selectable crushing characteristics, it is a promising crushing equipment.
However, the most serious problem of impact crusher is that the hammer plate and impact plate are easily abradable, especially when crushing the hard stones, the problem is even more serious, so it needs changing often. By far, with the outcoming of the wear-resistance materials, they have been widely used in the making of the Hongxing impact crusher. By taking the high chromium alloy cast iron material as the material to make the impact crusher, the abradable problem has been solved. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like cement rotating dryer, Henan Hongxing is always doing the best in products and service.powder making machine: http://www.china-hxjq.com/n244.html
Hongxing Heavy Machinery engineers have been devoted in upgrading the impact crusher, they inform you that HXJQ impact crusher can meet your requirements of low investment and high profit.All the materials we use to make the impact crusher have been strictly tested, by making full use of the Mechnics and Chemical Methods, the technology we take is also the most advanced.
When there is a need for impact crusher, Hongxing Heavy Machinery is to be your first choice. Our qualified equipments and best service with the most competitive price will satisfy you the whole using life of the impact crusher.
Mineral crushing and grinding are the main parts in the process of mining section. Therefore, the two tasks are attached great importance. In this production line, large sum of capital should be invested in while the energy consumption is very high. Besides, the maintenance fee is also high. The degree of the final mineral particles will directly affect grinding efficiency and the section cost. Thus, how to improve the productivity and output of mineral section work has become the main task for ore dressing plant that aims at reducing energy consumption, lowering cost and improving economic efficiency.

Several Suggestions to Repair Mining Machinery

From the second quarter of last year, the mainstream of construction machinery and equipment market demand began to fell sharply, this situation was mainly due to the entire engineering machinery manufacturing overcapacity, coupled with the changes in the market, such as the comprehensive deceleration of the high-speed railway construction, the completion of large-scale infrastructure construction, as well as the pressure of well-known foreign manufacturing companies entering into the Chinese market. These are reasons for the crisis of construction machinery manufacturing sector, but it is a different scenario in the field of mining equipment manufacturers. With the national emphasis on high-end equipment manufacturing, coal and mining areas achieve significant reform, which put forward higher requirements for high-end coal equipment and mining equipment and calls for large-scale modernization efficient and energy-saving equipment. At the same time, the national requires large-scale mining and other enterprises to take integration and achieve the integration and large-scale production– they all contribute to the development of the manufacturing industry of mining equipment.
Hongxing Heavy Machinery informs you that the effective way of maintanence mining equipments will greatly improve the efficiency and profits of the enterprise. So our professional engineers will offer you several tips here for your maintanence of the mining equipments.
1. Regularly clean and change the wear-parts
The mining equipments are working in the serious environment with dust and noise, so it is essential to maintain the equipments regularly. Xingban engineers tell you that the regularly checking and maintain of equipments will not only improve the efficiency, but also increases the profits. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like ore processing plant, Henan Hongxing is always doing the best in products and service.complete equipment for cement plant: http://www.china-hxjq.com/n279.html
2. The professional of installation technicians takes a great count
In the processing of installation, the professional technicians can make sure the machines work cohensively and continuously, but the unprofessional ones will make the efficiency a great discount. Hongxing Heavy Machinery have been devoted to the manufacturing of mining equipments, our qualified products and professional technicians can assure you the best working state of machines.
3. Take good care of the wear-resistant parts
The storing of the wear-resistant parts is also very important. For the good working state endures the best working of the mining equipments.
Seen from development history the mining equipment industry in our country, the whole industry didn”t experience long term accumulation and development process, but promotes our country to become a mining equipment manufacturing power in a short period of time alone with the promotion of reform and opening-up and urbanization construction. Such reasons as the lack of accumulation process, blindly follow suit of the development model, old-fashioned business pattern and so on lead to that our country can only be called a big mining equipment manufacturer, but to become a strong and powerful country, this industry still has a long way to go.

Best Method of Solving Oil Spill of Ball Mill

When the machine is in operation, if some fractions part can get proper lubrication, it can avoid dry fraction. It is proved that the fraction heat made in a short time can melt the metal of mill machine, thus have a result of damage and even death. (much leaking oil leakage or car appeared to whine, holding shaft, the main failure of this is why).
On the one hand, when the accelerator is turnned up, the fuel charge will also be increased, so the oil will be leaked. To solve this problem, we should turn down the accelerator to lessen the fuel charge. We should pay attention that the adjusting of the accelerator should be handled by the experienced workers, for once it is turnned too small, it will lead to the increasing of friction, if it is not dealt correctly, the ball mill may not work as usual.
On the other hand, after a long run time of the ball mill, Some fuel injection spray hole will be blocked. During this time, the oil prussure will be increased, which will lead to the unblocked holes fuel charge increasing, thus leading to the leaking of oil. To solve this problem, we should clean the oil spray holes, and check them timely, if it shows a sign of blocking, please deal with it immediately. Also, there is a need to pay attention is that the oil spry holes must be cleaned by some soft equipments for the damaging of the spry holes. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like stone crushing plant, Henan Hongxing is always doing the best in products and service.rod grinder: http://www.hxjq-crusher.com/S235.html
The amount of oil of roller and separator must be appropriate. All the rotation device equipments, including gear, motor and coupling machine should be added good lubrication oil. All equipment bearings, electric actuators, drive chains and other moving parts should be added adequate good oil. Check the whether the lubrication oil deteriorated and determine the changing of oil in a regular time.
Our ball Mil is crucial equipment for grinding after materials are crushed. The grinder machine is an efficient tool for grinding various materials into powder. It is widely applied in cement industry, chemical industry, new building materials, fire-resistant materials, fertilizer, porcelain and glass industry etc.
So we have to give the friction positions good lubrication. When the oil flowing to the friction positions, will adhere to the friction surface form a layer of oil film, reduce the friction resistance between parts, and the oil film strength and toughness is the key to play the lubrication.
Oil routine of cement oil and reducer should be smooth and the amount of main cement mill bearing should be appropriate. Cement mill gearbox lubrication oil station, petrol station fuel sliding shoe to appropriate oil to flow.

Mining Machinery Tends to Ecological Manufacturing

Reports of miners looking to cheaper production in Africa at the expense of Australia will add pressure to an already strained mining services sector. Companies with exposure to Africa will be well placed to pick up business while those only domestically focussed will be left battling it out for a smaller slice of pie.
Mining is a process by which the earth is drilled, usually by heavy machinery, to extract minerals and other materials from beneath the soil. Mining is carried out to retrieve a number of substances such as coal, gold, iron, diamonds, potash and uranium. While mining yields important substances for sale and industrial production, mining also affects the natural environment.
Ecosystems are affected by the physical perturbations of mining operations, as well as the chemical alterations in soil and water. Mining activities vary, but can include soil compaction and conversely, removal of the topsoil. These alterations disrupt nutrient dynamics by minimizing the availability of nitrogen and phosphorus, lower the pH through the acidification of the soil and can introduce toxic metals and acids. Depending on the scale and nature of the mining operation, these effects can be localized to the location of the mining or, through local hydrology, can extend to nearby aquatic systems, such as stream, wetlands and lakes.
Mining releases particles of various kinds into the air, which has an impact on air quality. Some of these substances are harmless, such as dust particles, while others can be potentially dangerous. Dangerous particles include arsenic, cadmium and lead. Over time, and in sufficient quantities, these dangerous particles can have an effect on human health, especially respiratory health. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like secondary cone crusher, Henan Hongxing is always doing the best in products and service.jaw crushing plant:http://www.hxjqchina.com/product-list_11.html
On this real recycling process, various kinds stone crushers used.Jaw bone crusher mostly are used to shift the medium debris crushing of various ores and big size materials together with the crushing pressure from less than 320Mpa. It s sort of excellent mine mashing machine and will mash materials with assorted dimensions to small creations. The jaw crusher can also be used using the mining in addition to sand-making equipment, and may too independently be used.Have an impact on crusher happen to be made to cope with the material with the team length 500mm, and fewer compared to 350Mpa anti-pressure strength. The effects crusher we company contains produced are finding their very own extensive application around neuro-scientific expressway building, hydropower work and construction jewel crushing. Impact crusher are usually divided into two categories: the common impact crusher as well as hammer impact crusher by means of large-size cavity.Mobile cement crusher is a type of high-efficient crushing accessories plus it adopts your self-driven system with all the top features of advanced technology and then complete-function .With fine smartphone feature and working page adaptability. It s gained 2 types: Hydraulic-driven trail mobile plant along with crawler type mobile crusher.

Hongxing Provides You with Multifunctional Crushers

Stone Crusher in Germany is usually used for crushing & screening project in Germany quarry & crushing method. The quarry crushing plant is designed because quarrying is always a common but low efficient process. Welcome to zenith Professional Stone Crusher in Germany Supplier.
Adopting the latest technological development, this machine is suitable to crush various kinds of ores and rocks of medium or above medium hardness like iron and copper ores, limestone, quartz and granite, etc. Compared with jaw type crusher, it has such advantages as stable structure, high efficiency, easy adjustment, reliable performance and economical operation etc so that it is the ultimate solution for the secondary crushing to achieve uniform product size of hard rocks, ores and minerals. The spring safety system of crusher acts as an overloading protection system that allows metals to pass through the crushing chamber so as not to damage the equipment itself. The safety system uses dry oil and water as two kinds of sealed formation to make plaster powder and engine oil separated to make sure reliable performance. This type of crushing chamber depends upon the size of feeding and fineness of the crushed product. It is available in various designs and models according to the type of the crushing cavity. The standard type (PYB) is applied to medium crushing, the medium type is applied to medium or fine crushing and the short head type is applied to fine crushing. It finds wide application in metallurgy industry, construction, road building, chemical and building materials, etc. The outer shells and the other body components are made out of the finest quality steel castings and its robust design helps withstand high crushing loads. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like china cone crusher, Henan Hongxing is always doing the best in products and service.grinding miller:http://www.china-hxjq.com/n281.html
How does it work? It crushes materials by the working surface between the movable cone and fixed cone. So it is more advanced and efficient than jaw crusher. The movable cone is supported by spherical bearing and fixed on a hanging erect shaft which is set in the eccentric sleeve, and the sleeve is set on the stopping and pushing bearing. The movable cone and erect shaft are driven by the eccentric shaft sleeve together. The eccentric shaft sleeve is driven by horizontal shaft and fimbriated gear, and the wheel of the belt conveyor is driven by motor through v-belts. The lower part of vertical shaft is installed in the eccentric sleeve. When the eccentric sleeve rotates, there is a conical surface lined out by the shaft. When the movable cone comes near the fixed cone, rocks are grinded into pieces, when the cone leaves, grinded materials is discharged from the discharge hole. The fixed cone can be ascended or descended by adjusting setting to adjust the width of discharge hole, and consequently the output size is determined.
As a qualified stone crushing plant custom and manufacturer, we not just can provide little scale stone crushing plant like 40 TPH capacity, we also can provide big scale stone crushing plant like 1000 TPH to our contractors and finish users.
This device stone crushing plant which consists of jaw crusher, cone crusher, VSI crusher is broadly adopted by corporations in big road, bridge structure company, aggregate manufacturing plant, ore dressing plant and mineral benefication plant and so on.

Ways to Settle Serious Noise of Ball Mill

The mill noise is the effect on the metal from the roller ball and cylinder wall liners and processing components, machinery noise. The sound along the liner, the cylinder wall, anticipated out to external radiation, like: the crash involving the ball as well as ball, the ball and lined with steel plates, the crash from the materials, the friction sound. There is other gear operation, the noise transmission (gearbox and motor) vibration.
Controlling the noise on the route of transmission is an indispensable part in the noise control field. The most direct, effective, economic method for the ball mill’s noise control is to reduce the voice from the sound source: “control the noise from the very start of the sound source”. Therefore, we can see that the development tendency of the ball mill’s noise control is to directly low down the noise produced by the sound source itself.
First of all, we start from the route of transmission to take a control, the control and implementation of the ball mill—a part of the ore beneficiation is to develop fixed acoustic enclosure or assembling acoustic enclosure. Hongxing—a ball mill manufacturer, mainly produce: ball mill, ball mill equipment, cement ball mill etc.
Secondly, to begin with the sound source and think about how to reduce the noise, one way is to conduct vibration damping and sound insulation disposition around the barrel; the other is to lay down an elastic buffer between the inner side of the barrel and the lining and adopt the floating lining technique. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like jaw crushers, Henan Hongxing is always doing the best in products and service.linear vibrating screen:http://www.china-hxjq.com/p18.html
As a type of heavy-duty equipments, ball mill will always make lots of noise when it is put to work. That is the stuff which is constantly annoying us. Another frustrating matter is the intensity of the noise resulted from its intensive character. We are going to improve the machine directing at the noise problem.
In the permitting condition, concentrate the ball mill on the special ball mill chamber and reform the ball mill chamber to a special acoustic booth. The effect of it will be better than that of the sound insulation cover. However, we must pay attention to solve the problems such as the monitoring in the operating of ball mill, the internal heat dissipation and the maintenance of the ball mill.
Energy-saving ball mill is to use roller to drive big roller and then happen friction to do wheel transmission way, namely we need to put a bearing in the center of four roller, and then connection way is to use the output shaft of gearbox to drive center axis of roller, thus depend on the principle of multistage speed of reducer’s input and output shaft-gearbox, shaft-roller, big roller circle. Only this, we not only ensure the normal operation of ball mill, but also save 50% electricity use.

Sand Maker is Wide Use in Our West Areas

Under the market situation of oversupply, magnetic separation machine faces the same challenges as other mineral processing equipment. According to statistics, about 30% of sand maker is applied in the cement industry and the mining industry. China economy grows steadily. The construction of the West and the Central Plains needs large amount of sand, which will inevitably promote the development of sand maker. It is predicted that the sand maker industry will have broad market prospect over the next ten years.
With the improvement of national infrastructure, sand maker has been widely used in sand and gravel production line, especially in the northwest, it can be seen everywhere, now, let’s analyses that why it is so widely used in Western China with Hongxing experts:
Sand production line is the main production line used for producing sand and stone currently, with the dwindling of natural sand and gravel materials, it has been an unstoppable trend that using artificial sand instead of natural sand, and therefore sand production line will be widely used, especially for water conservancy, road, bridge construction, which has a high demand on the quality and quantity of aggregates, so the demand for sand maker will be relevantly extended.
Due to lack of water, there are many dried riverbed in Northwest, where can be found a lot of sand and gravel if water through it, and then split sand by the most primitive screening way, but with water reduction, there are only river pebbles and little sand. With the development of national investment in infrastructure and economic development of Western China in the past few years, the demand on sand increased, some companies and individuals aimed at this market, began to develop the river gravel, they used the most popular sand stone production line, and greatly improved the efficiency of the production to meet the needs of the region's aggregate. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like ore flotation equipment, Henan Hongxing is always doing the best in products and service.rock grinder:http://www.china-hxjq.com/n289.html
Sand maker is also used in certain locations and certain time, if we are able to do related work well, we believe that regardless of individual, businesses or our country will be benefited.
In the coming new year, combined with many years of sand maker designing experience and introducing the advantages of foreign sand maker, Hongxing Machinery developed and designed a new generation of HX07 sand maker. This new sand making machine has many advantages such as small material discharging force, uniform particle granularity, high production capacity, long service life of the hammer, convenient repair and maintenance and strong automatic ability, thus improving the whole technology level of the sand making industry.

Technological Crusher is Popular in Market

Stone directly fall into the high-speed rotating table from the upper part of the machine ; under the effect of high-speed centrifugal force , turntable with the flying stone which appears as the umbrella type , after the collision force against each other, the frequently hit, friction and crushing are produced by the eddy motion between the rotating plate and casing , and the products are discharged by the lower part, the closed multi-cycle are formed, the screening equipment control the particle size.
This conference was held on May, 12-13 2008, in Xian city. At the conference, Jiang Yaoping said that: together the related department, department of commerce will take various measures to expand import of advanced technical equipments. These measures include: take advantage of 5 billion of subsidized capital, import more from key countries, bridge the difference between imports and exports, urge the developed countries to relax the regulations of export, perfect the international bidding institutions and import regulations about electro-mechanical imports.
Director General of Electro-mechanical division of Department of Commerce and vice-director of Chinese electro-mechanical imports and exports office, Wang Huaqin said that: we shall put more effects in the introduction, absorption and innovation of key projects, critical fields, key technology and common technique. And transform from the import of technical equipments to introduce more technology cooperation, transfer and joint production in the national major equipment project such as, railway, electric power, energy, environment protection etc.
In the recent year, although our electro-mechanical equipments import volume is rising, our independent innovation abilities are not strong and technology absorption is weak. From the status supplied by Department of Commerce, domestic electro-mechanical equipments manufactures patent in the overseas market only account for less 1% of the whole world. And exports volume of the brand equipments is very little. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like classifier, Henan Hongxing is always doing the best in products and service.dryer drum:http://www.china-hxjq.com/n294.html
Wang Qinhua expressed that we shall support the policy of business driven by technology, take advantage of the innovation base role, push forward the transform of high and new technology industries from assembly processing to independent innovation, and improve the value-added and key competition of high and new technology industries. We shall build up an industrial cluster with strong international competitiveness, covering industries such as advanced manufacturing, biotechnology, environment protection and energy.
According to their structural characteristics ,The mineral impact Crusher can be divided into the single-rotor impact crusher (back-breaking) and dual-rotor impact crusher (back-breaking). As to the rotor turning, rotation crusher can be divided into the reversible and irreversible rotating these two types, single-rotor impact crusher points. The dual-rotor impact crusher can be divided into the same direction as the rotation, reverse rotation and opposite rotation these three types. According to the internal structure, single-rotor impact crusher is divided into two forms, that is, with Leveling the grid plate and with a neat and well-spaced grid plate. The double rotor impact crusher can be divided into the following two types: the rotor at the same level and the rotor are not on the same level .

Hongxing Crushers Sales at a Reasonable Price

This series have many advantages, such as big reduction ratio, even granularity, simple structure,silica sand grinding mill supplier, convenient repair and economic operation, which are widely used for mine, smelting, building material, road, railway, irrigation works, chemical and materials with compression strength no more than 320 Mpa.
Small Portable Rock Crusher called portable crusher station is fully adaptable to all crushing needs; it set up a new range of business opportunities for contractors, quarry operators, recycling and mining applications. It can eliminate the obstacles of the crushing places and circumstances, and offer the high efficient and low cost project plants for the client. To the client, it is the best choice.
Compact, efficient, Zhengzhou Hongxing unveils a new Crusher Plant For Sale with proven heavy duty jaw crusher for contractors. Contract crushing with excellent mobility, high crushing capacity, good availability.
The brand new mobile cone crusher plant is designed for efficient secondary and fine crushing and screening applications. Zhengzhou Hongxing mobile cone crusher features with top quality, high capacity, cubical end products, low wear part cost, is the most efficient and flexible secondary/tertiary crushing plant in the market for accurate screening and compact transport dimensions If you want to know more about Zhengzhou Hongxing mobile crushing plant, please visit.
Rock crushing equipment for sale is to designed to crusher hard rock, granites, any recycling materials, all mineral based demolition materials with the ability to produce clean, precisely sized end products effectively, Mobile impact crusher plant: To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like mobile crushing plant, Henan Hongxing is always doing the best in products and service.rod grinding mill:http://www.china-hxjq.com/n282.html
Mobile impact crusher is ideally suited for crushing medium-hard stone like limestone and all mineral-based demolition materials, such as bricks, asphalt and concrete, and features with high capacity, large feed opening, robust construction, compact transport dimension, good cubicity in end products for long lasting, reliable operation.
Hxjq is the world’s leading rock and mineral processing corporation. Our stone crushing equipment is the right choice for surface and underground installations at quarries, mines, gravel pits and even recycling plants. Their ease of installation, serviceability, flexibility and productivity make them especially suitable for existing installations or new green-field primary crushing plants. We provide professional training service about stone crusher installation and design, operation and maintenance.
Chinese enterprises investing in mining Africa has an exterior benefit that is conventional friendship between China and Africa. Much more importantly, the Chinese enterprises have great advantage in mine exploration, style, exploitation, personnel, and so on. As a large mining machinery manufacturer and exporter, ball mill,China has lots of crusher producers in Africa who have currently established stone crushing plants or grinding machine vegetation in African countries. So significantly, China has carried out the geological exploration work in 13 African countries. In current many years, Ministry of Land and Mineral Bureau has their way to carriy out exploration actions in a dozen countries such as Namibia, Ghana, Mali, and so on. and the gold mining in Ghana has been began.

New Type of Sand Machine are Made for Granite

Our country new system sand machine market heating up quietlycommonly used in the treatment of sludge and slime drying crops Slime kiln as the most professional manufacturers to provide you most detailed slime kiln equipment allows you to produce a cost-effective high quality slime kiln equipment,rotary kiln Slime kiln Qinglong Machinery senior experts from R & D and production advantages up Qinglong Machinery today to explain to you that we produce eight characteristics of slime kiln eight characteristics of slime kiln, coal slime kiln overload resistance,block machineConcrete brick making machine handling a large amount of low fuel consumption, low drying costs; 2, downstream drying, smoke and wet material into the kiln from the same side. , high evaporation intensity can be obtained using the high-temperature flue gas kiln outlet temperature, high thermal efficiency; 3, depending on the material properties change operating parameters, so that the material to be able to form a stable full-cut fabric in the kiln cylinder of curtain, quality heat exchange is more fully; 4, the new feeding and discharging device, put an end to the the drum kiln feed plug discontinuous,cone crusher uneven and returning materials to reduce dust removal system load; 5, new internal structure, and strengthen the role of cleaning and thermal conductivity of the materials have been dispersed, eliminating the cylinder wall adhesions phenomenon, material moisture, sticky and adaptable;
The granite formed into the igneous rock below the earth surface is a kind of magma, whose main ingredients are feldspar and quartz. Granite is plutonic rock, which often can form good visual differentiable mineral grain. Granite is not easy to weathering and its color is beautiful, whose color and luster can keep one hundred years, and because of its high hardness resistance to abrasion, it is also used for construction, railway, highway, hall and the ground besides being used for outdoor sculpture. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like rotary cement kiln, Henan Hongxing is always doing the best in products and service.lime pit:http://www.crusher-machine.com/n134.html
Granite has good natural advantages and unique developing opportunity of national economy, this is not enough, we must consider the investment and selection of sand production line of granite system from the point of cost and investment. In the crushing system of sand production line, if the demand of the customer for the stone grain type is not high, we can use two stage jaw broken scheme for production, which not only is the most simple maintenance scheme and the lowest investment, but also whose cost is the most economic. But the shortcomings of the scheme are bad grain type and higher percentage of needle plate. That is the reason why the aggregate in the market is not high, because the high-level building construction needs the excellent aggregate.
We need to add a laminated crusher between the jaw crusher and impact crusher in order to realize the results of excellent product type and low cost, such as tertiary impact crusher and cone crusher. The configuration can make the main crushing work being finished by the first and second crushing, and the impact crusher can finally finish the production line for integer crushing, which can greatly reduce the reverse material formed after being screened. If the proportion of reverse material is high in a production line, which will make the last crushing machine bearing much more working pressure of repetition work, and at the same time, which also will make the loss of standing wear and tear being increased.

Mobile Crushers Continue to Innovate Technology

Hxjq Heavy Industry mining machinery industry leader, the company independent research and development of the construction waste disposal technology – mobile crusher (mobile crushing plant). The introduction of the German professional manufacturing and processing technology, mobile crusher station has the world’s most advanced the scene processing technology and mining technology, can move freely in the demolition site to adjust the operating point can also be asked to choose a different device processing different construction aggregate.
Recently, several mobile crushing plants made by Hongxing Mining Machinery are successfully sent to Sri Lanka. This is not the first time for the export of Hongxing crushing equipment,but this large-scale export of mobile crushing equipment fully proved mining machinery manufacturing technology of Hongxing Mining Machinery has been recognized by international customers. This is a show of the strength of Hongxing Mining Machinery and it makes the domestic technical development of machinery industry once again proven.
After a long investigation and practice,Henan Hongxing Mining Machinery has developed and launched the efficient and environmentally friendly construction waste disposal equipment - mobile crushing station.This building waste disposal equipment is in full compliance with the indicators of national government resources recycling.The mobile crushing station is set by the feeding system,crushing system,the transmitting and other process equipment.The process optimization design makes the mobile crushing plant have excellent construction waste crushing and the aggregate production crushing operations performance through the combination of different models of the machine to form a powerful crushing and screening operation pipeline to complete the processing operations. The entire production line includes a jaw crusher,impact crusher, cone crusher, feeder, vibrating screen and conveyor with fully enclosed design. The production line is equipped with the dedusting equipment, the Fe removing device and the automatic computer control.The full set of construction waste disposal equipment has advanced design, excellent performance, high efficiency, easy maintenance,economical operating cost and stable and reliable operation. Compared with the various types of fixed crushing plants, the mobile crushing plant can move like a small and medium-sized broken processing plant whose efficiency and operating costs are better than the fixed crushing plant at the same level or higher level. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like quarry machine, Henan Hongxing is always doing the best in products and service.slag mill:http://www.crusher-machine.com/n167.html
In the 21st century, china has become a big mining machinery manufacturing country and attached worldwide attention.However, we' re not a mining machinery manufacturing power, because most of the high-end mining machinery products made in China have no independent intellectual property rights. Only through ecological and pleasant mining machinery with independent innovation, the development of digitalization and intelligence can we realize important equipment and high-end sets to make greater contribution to our country's economic construction and social development.

Coal Mining is Major Applying Field in Crushers

cost of iron mining process use giant machines to eliminate coal from the ground. They use two techniques: surface or underground mining. Many U.S. coal beds are extremely near the ground��s surface, and about two-thirds of coal production comes from surface mines. Contemporary mining methods permit us to effortlessly reach most of our coal reserves. Because of development in surface mining and improved mining technology, the amount of coal produced by one miner in 1 hour has greater than tripled since 1978.
Coal mining in the past started in the middle of the seventeen hundreds, in the state of Pennsylvania. Over the years, many ways to remove this substance from the earth have been used, with methods being classified as underground or surface. The reason that it was first mined from the earth was not for electricity, but to be used in steel mills. It was not until the eighteenth century that coal was used to generate electricity to light homes and businesses. The first miners used a method called room and pillar, and eventually this method was combined with a method termed retreat. Coal mining in the past depended on workers and supporting the mine walls and ceilings. Rooms were carved out of the mine, and these were supported by massive pillars and beams. Miners would remove the coal from these underground rooms. When retreat mining was done along with room and pillar, the rooms were collapsed as the miners retreated from the mine. This collapse opened up even more coal seams, which could then be recovered. It was not until the middle of the nineteen sixties that this process changed much. This is when longwall mining started being used. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like flotation cell, Henan Hongxing is always doing the best in products and service.mechanical feeder:http://www.crusher-machine.com/n142.html
Coal mining in the past includes the longwall mining method as well. This method is much more effective, because a much larger percentage of the seam can be removed. This method uses a machine which carefully collapses a huge part of the room in a controlled manner, allowing a lot more of the seam to be accessed and removed. Surface mining can also be done if the seam is close to the surface. In this method the ground covering the coal seam is removed, then the coal is removed. The ground is put back down and seeded, to return the land back to the original condition. Unlike coal mining in the past, current mining operations do consider their environmental impact on the earth and surrounding areas, but this still does not negate the harmful effects that these operations can have. Coal is a fossil fuel which is not renewable, and it takes millions of years for this fuel to be created. Once it is gone it can not be replaced, and there are limited reserves left in the earth. Coal is mainly used to generate electricity in the United States, and when it is burned it releases large amounts of greenhouse gases and pollution. This causes damage to the environment and speeds up the global warming as well.
Underground mining, occasionally called deep mining, is utilized when the coal is buried several hundred feet beneath the surface. Some underground mines are 1,000 feet deep. To remove coal in these underground mines, miners ride elevators down deep mine shafts exactly where they run machines that dig out the coal.

Wide Applying Arrange of Cement Mill in Mining Industry

The main measure of fineness today is specific surface. Because cement particles react with water at their surface, the specific surface area is directly related to the cement’s initial reactivity. By adjusting the fineness of grind, the manufacture can produce a range of products from a single clinker. Tight control of fineness is necessary in order to obtain cement with the desired consistent day-to-dayperformance, so round-the-clock measurements are made on the cement as it is produced, and mill feed-rates and separator settings are adjusted to maintain constant specific surface.As the professional manufacturer of complete sets of mining machinery, such as jaw crusher, Henan Hongxing is always doing the best in products and service.
The working efficiency of a crushing machine is determined by its working principle, which is closely linked to the mechanism of material crushing. For this reason, it is necessary to systematically research the crushing mechanism of the materials and comprehensively describe the working condition of the crushing equipment so that the purpose of high efficiency and energy conservation can be achieved. Some scholars in foreign countries think that the following research work should be done in order to realize the goal:
1. The physical action of the crushing process;
2. Research on the crushing process of the single particles;
3. Research on lamination crushing;
4. Mathematical simulation of the crushing process;
5. The working condition and optimum control of the crushing equipment.
No matter what kind of cement is ground, the final grinding system of the cement mill is that most economical and its electricity effect is the most significant. When used in different powder grinding systems, the cement mill has different production increase and energy consumption effects. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like compound crusher, Henan Hongxing is always doing the best in products and service.ore rod mill:http://www.china-hxjq.com/n285.html
1. Pre-grinding system.
Generally speaking, the pre-grinding system can increase the production by 20-50%, and save 9-10kwh/t of electricity, equals 15-20%. When the ratio between the throughput of the materials and the ability of the mill system increases, the cycle load of the roller crusher can be increased in order to improve the production capacity of the powder grinding system and reduce the unit electricity consumption of the system.
2. Mixed grinding system.
The mixed grinding system is able to increase the production by 80-100% and save electricity by 30-50%. The feature of this system is that it returns part of the coarse powders inside the powder selection machine to the roller crusher to be crushed again together with the new materials and return the other part directly to the powder grinding machine for grinding. It can also return the boundary materials to the roller crusher for crushing again. The advantages of boundary materials cycle are: firstly, evenly mix the materials inside the materials stock bin so that the roller crusher can run stably and the electric current has small fluctuation; secondly, after cycle crushing, the granularity of the materials that go into the grinder can be reduces and the production capacity can be further improved; thirdly, increase the amount of the coarse powders inside the powder selection machine that is returned to the roller crusher and let the roller crusher fully play its role of saving energy.