Hongxing Impact Crusher Is Favored by Many Customers

The impact crusher is the mostly widely used in various fields, especially the mineral resource crushing and processing area and the construction area. As we all know, the impact crusher can crushing the materials through the mutual action of the impact plate, liner and the rotor. Therefore, in the crushing process, the rotor and impact is the key to determine if the materials can be effectively crushed. The crushing cavity tends to be larger and lower. The secondary impact plate should be left behind. In addition, the discharging mouth at the lower end should close to the center horizontal line of the rotor to increase the fine crushing effect. Impact crusher is an efficient crushing equipment of mining industry, an indispensable machine for each mining company. Due to its simple structure, easy operation, competitive price, impact crusher was favored by mining industry. There are many crushing equipment manufacturers all over the world, and their levels are notably different.
If the impact crusher is divided according to the impact plate of the crushing cavity, the first-stage corresponding impact plate is called the first crushing cavity. The secondary corresponding impact plate is called the secondary crushing cavity. The third-stage corresponding impact plate is called the third crushing cavity. As a result, the impact crusher with the three-stage impact plate can strengthen selective crushing by increasing the number of the crushing cavity to increase the crushing degree of the materials. Therefore, adding the crushing cavity and using low rotating speed of the rotor can reach excellent crushing effect, which can also reduce the attrition of the plate hammer.
The crushing ratio of the impact crusher mainly depends on the length of the impact routine. If the impact routine with three-stage impact plate increases, the crushing ratio will be great. We can get the products with finer particle size. However, the structure is very complex. The design of the impact plate of the impact crusher is the design of the crushing cavity, because the impact plate is the most important component to compose the crushing cavity of the impact crusher.
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Finite Element Analysis for Integration of Crusher

At the feeding inlet or the grizzly of various mines and the crusher machine in the quarries, the application of the fixed crusher machine for secondary crushing for the large pieces of the materials has become more and more widely. The working device of the crusher machine is the main component which can be used to bear the work load. The strength of the structure can directly affect the stability and the working performance of the crusher machine. The experts of Henan Hongxing Mining Machinery have used the finite element method to do a lot of researches on the working device of the fixed crusher machine and they have got the force situation for stress, strain, displacement, safety factor and the rivet at any point of the structure of the crusher machine.
The working device of the fixed crusher machine is mainly composed of the rotary motor, the rotating mechanism, swing arm, bucket arm, connecting rod, rocking bar, hydraulic hammer, boom cylinder, bucket arm cylinder, turn hammer oil cylinder and other components. With different working conditions, the working device can bear different working load and the result for the finite element analysis is also different. The experts of Henan Hongxing Mining Machinery have got the position for the maximum stress point and the point of the maximum displacement with the research results. Therefore, the research results have provided certain basis for the further optimization, improvement and the design for the structure of the crusher machine.
According to the finite element analysis of the working device, we can know that the largest stress is less than the allowed stress of the crusher materials, which can meet the strength conditions. When the hydraulic system has the frequency of the excitation frequency and the external forces hydraulic system is close to the working device frequency, the resonance of the system will be caused so that the vibration of the working device increases.
The analysis about the integrated finite element can help us to better improve and design the various components of the working device. At the weak parts of the working device, we can increase the strength and the stiffness by using the analysis effect so that the distribution of the stress and the strain become more reasonable.

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Discussion about Spring and Hydraulic Cone Crusher

In recent years, the discussion about the spring cone crusher and hydraulic cone crusher becomes more and more. Both the cone crusher manufacturers and the customers are very concerned about this issue. As the professional cone crusher manufacturer, the experts of Henan Hongxing Mining Machinery have the unique view for customers.
The spring cone crusher is the most stable cone crusher in the world. In the actual operation, the customers must under the basic difference between the spring cone crusher and the hydraulic crusher. The hydraulic cone crusher may bring more benefits for the buyers so that most manufacturers produce the hydraulic cone crusher. In fact, we can know the basic difference between the spring cone crusher and the hydraulic cone crusher in the rational view. There is a great difference between the locking and protection device of the spring cone crusher and that of the hydraulic cone crusher, which is also a very important reason that has impact on the stability of the equipment. If there is something wrong with the spring, you can easily find out the problems. Timely replacement of the spring of the cone crusher can ensure the normal operation of the cone crusher. However, it is difficult to find the problems about the hydraulic components of the hydraulic cone crusher. In addition, the maintenance is very trouble and the requirements on the technology are very high. From this point, the stability of the spring cone crusher is better than that of the hydraulic cone crusher. There is great gap between the domestic hydraulic cone crusher and the foreign cone crusher. In the recent Bauma, many manufacturers have demonstrated the hydraulic cone crusher. However, the quality of the hydraulic components of the domestic hydraulic cone crusher is difficult to be guaranteed.
People are willing to select the hydraulic cone crusher because of the convenience. Based on the need of the customers, Henan Hongxing Mining Machinery positively introduces the advanced manufacturing technology from foreign countries and combined with the research power to produce the compound cone crusher with the advantages of the spring cone crusher and the hydraulic cone crusher. The compound cone crusher has the advantages of simple structure, stable operation and easy management.
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How to Prevent the Rustiness of Crusher Machine

The strength of the crusher machine is great in the working process. The crushing environment is very harsh so that the damage to the crusher machine is very serious. Especially in the winter, the low temperature is very unfavorable for the maintenance of the crusher machine. If the crusher machine has not been used for a long time, the crusher machine will get rusty, which will affect the quality of the crusher machine. The rustiness of the crusher machine may lead to the stop production, reduction of output, production waste, and huge maintenance costs. The too early replacement for the equipment may even threaten the personal safety. In addition, the price of the crusher machine is very high. How to prevent the rustiness of the crusher machine and how to deal with the rustiness has become a very important issue in the actual use of the crusher machine.
How to prevent the rustiness of the crusher machine? When the crusher is removed from the storage, you must check the paint. You can repair the crusher machine according to the needs. Before the installation of the crusher machine, you should remove the preservatives from all contact surfaces. If the flywheel has been disassembled from the eccentric shaft, the contact surface between the flywheel and the shaft should be ensured to be coated with the preservative. During the storage period or the seasonal shutdown period of the crusher machine, the crusher and the parts should be stored in a firm stand to prevent the contact with ground. You should make the crusher machine run once every month for five minutes at least to ensure the correct lubrication of the bearing. If the crusher machine can not be operated correctly in the storage period, you should rotate the flywheel of the crusher machine with your hand for 3 times to 4 times so ensure that the bearing is lubricated correctly. Add grease to the bearings if it is needed.
The rust removal methods are the followings. You can make use of the impact role of the high pressure water jet and the water pry role to get rid of the rust and coating on the crusher machine. This method has no pollution or dust, which will also not damage the steel plate. The rust removal efficiency can be greatly improved.

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Low Carbon Crusher Boosts Railway Infrastructure

According to the latest statistics of the Ministry of Railways, there were 22 high-speed railways into operation in China at the end of September and the total mileage is 7,563 kilometers. In addition, the total mileage completed during this year will be more than 9000 km. The amount of the investment on the railways has been raised several times in a year. The latest investment is of 630 billion yuan, in which the investment in capital construction is 516 billion yuan. The railway experts have predicted that next year's railway investment will be between 600 billion yuan and 700 billion yuan.
With the warming of the railway investment, a number of local governments have put forward investment plans. The railway construction once again becomes the cake for the local government investment. With the warming up of the investment and the reform of investment and financing aspects of the Ministry of Railways, the heat of the railway construction also recovers. In addition, the demand on the sand and gravel are bound to grow. Therefore, the resulting joint series of chain effects will again open the door for the mining machinery industry market.
Like basic building, the railway construction also can not be separated from the help of the sand and gravel aggregates. Along with the maturity and development of science and technology, the railway construction, infrastructure construction and other major projects have rising requirements on the raw materials. Therefore, this also raises a higher demand of the mining machinery industry. The mining machinery enterprises should greatly increase scientific and technological innovation, break the technical barriers, optimize the corporate structure, strengthen the R & D and manufacturing capabilities of the equipments, improve the control force for the quality and energy consumption of the products to strengthen the competition in the market ability and promote the high-end development of the domestic machinery and equipment.
As the first brand in the mining machinery industry, Henan Hongxing Mining Machinery continuously improves the independent innovation and improves the quality of the products to meet the market demand. The crusher machines produced by Henan Hongxing Mining Machinery have been favored by a lot of customers at home and abroad.
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Hongxing Hammer Crusher Has the Perfect Performance

Faced with the strong momentum of development and the fierce competition of the market in the building materials industry, Henan Hongxing Mining Machinery continues the technological innovation and optimizes the industrial structure. The new generation of the hammer crusher produced by Henan Hongxing Mining Machinery has the advantages of long service life, low energy consumption, convenient operation and perfect performance. This kind of crusher uses the most advanced production process in the world. This equipment has caused a sensation and it is favored by a lot of customers at home and abroad when it was launched.
The process capacity of the hammer crusher produced by Henan Hongxing Mining Machinery is 50t/h to 1000t/h. In addition, the materials whose particle is 600mm to 1200mm can be crushed to less than 25mm one time. The hammer crusher has the significant role when it is used for crushing the materials with medium hardness and the brittle materials whose compression strength is not more than 150 MPa and calcium content is higher than 40%. The hammer crusher is often used to crush the following ore materials, namely the limestone, coal, salt, chalk, gypsum, alum, brick, tile and the coal gangue. Henan Hongxing Mining Machinery is the most professional manufacturer for the production of the hammer crusher. The liner, hammerhead and other wear parts of the equipment have been conducted special process design and processing, which can greatly improve the service life of the equipment. At the same time, through the optimal design by the experienced experts of Henan Hongxing Mining Machinery, the hammer crusher produced by Henan Hongxing Mining Machinery can adapt to the production under special weather conditions such as cold and hot weather. The intelligent and outstanding efficiency performance is significant, which is supported by a lot of customers.
In today’s mining machinery industry, there are many top-ranking enterprises. However, a lot of companies without science and technology research and development team also exist. As a result, when you choose crusher equipment, you must be very careful in the choosing process. Choosing a crusher machine with perfect performance can bring you huge benefits.
Original link: http://www.best-crushers.com/n170.htm
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Solutions for Common Faults of the Dryer Machine

The mining dryer machine is a kind of large machinery. The faults of such equipment will have serious impact on the work efficiency. In addition, the maintenance is also very difficult and complex. In this article, the experts of Henan Hongxing Mining Machinery will detailed analyze the common faults and the solutions for the dryer machine.
First, the mining dryer machine is explosive. There may be two reasons. On one hand, the materials in the dryer may be clogged and the temperature of the dryer machine is too high, which will cause inner fire. When the materials are clogged, we should immediately shut down the machine and completely clean the dryer machine. In order to prevent the occurrence of this case, we must do the daily maintenance work very well. If the temperature of the dryer is too high, we should reduce the fuel supply to reduce the temperature of the equipment to reach the production requirements.
Second, the finished materials can not be normally discharged after they are dried. The reason is that the installation of the dryer machine does not comply to the specifications. Gas leakage may cause low wind pressure.
Third, the fire phenomenon of the materials may occur in the dryer machine. There are four reasons. First, the specifications of the dryer machine can not meet the requirements. The device is small, but the materials to be dried are too many. Second, the design principles of the drying equipment are not reasonable. The manufacturer should replace the drying equipment. Third, the raw materials can not be absorbed, which may cause fire in the dryer machine. We should carefully check if the installation of the drying equipment is right and if the machine leaks the air. Forth, the use of the drying machine is not right. We should learn the using right method according to the using instruction manual.
Forth, the finished materials after drying are not even. This is because the materials are solidified into groups. We should first spread out the materials before drying. At the same time, we should correctively use the drying machine.

Kinetic Analysis of Jaw Crusher under Load Condition

As everyone knows, the rack of the crusher machine needs to withstand the periodically dynamic pressure of the motion components when the crusher machine is in the no-load operation. The vibration force of the rack brought by the inertial force can be used to optimize the balance to reduce or eliminate the dynamic pressure of the motion components on the rack. What is the dynamic force is like when the crusher machine is in the load conditions? The experts of Henan Hongxing Mining have carried out the dynamic analysis about the motion mechanism of the crusher machine in this kind of working conditions. You can use the corresponding dynamic analysis program to obtain the stress state of the main components of the revolute four-bar mechanism of the crusher machine in the load conditions. In addition, the 3D modeling software has been used to establish a three-dimensional model of the motion mechanism of the crusher machine. We can get the following conclusions.
The first is the stress analysis about the crank. The crank not only suffers from the action force of the weight of the eccentric part of the eccentric shaft. In addition, the crank also suffers from the constraint reaction force of the kinematic pair and the hinge kinematic pair.
The second is the stress analysis of the connecting rod (moving jaw). In a crushing cycle, the crushing process occurs when the angel of the spindle is between 60 degrees to 240 degrees. The size of the crushing force and the acting point size change with the turning angel of the crank. The peak value of the crushing force is at the 2/5 height of the lower part of the crushing cavity.
The third is the stress analysis of the elbow board. In the motion process of the elbow board, the inertia force and moment of inertia will be produced. Since the value of the inertia force and the moment of the inertia are too small, they can be ignored. The elbow board can be regarded as a two-force member which also suffers from the hinge constraint forces of the kinematic pair.
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Research on Semi Industrial Ore Beneficiation Test

The semi-industrial ore beneficiation experiment is carried out in the special semi-industrial test plant or the workshop. The test can be a wholly continuous process. In addition, the test can also be a continuous or semi-industrial standalone test for the local job. The purpose of the test is to verify that the process programs of the laboratory and obtain the technological economic indicators similar to the production, which can provide a reliable basis for the concentrator design or lay the foundation for further industrial test. The equipment used for the semi-industrial test is the small-scale industrial equipment. There are no clear provisions for the scale of the pilot plant.
For the ore with complex nature and the new process and new equipment without enough production experience, the semi-industrial ore beneficiation test is very necessary. For the mineral area with rich resource, semi-industrial ore beneficiation test can be carried out if necessary to further improve and perfect the process flow and provide stable design data for the design of the new ore dressing plant. When the semi-industrial beneficiation pilot plant is established, you should take into account the possibility of testing for other mining ore. Therefore, the test content and device configuration should have certain flexibility. The semi-industrial pilot plant is actually a small processing workshop. The specifications and models of the equipment selected should be close to the industrial production equipment. The semi-industrial test is produced due to the complex nature of the ore, few production practices or the using of new technology in the design, or large scale of the concentrator. The process and the process parameters provided by the laboratory are not stable enough. The test content for the semi-industrial test includes the followings.
The first is the test ore samples. The semi-industrial test ore samples must be the ore samples taken according to the sampling design. The samples should be basically same as the samples from the laboratory.
The second is the analysis and identification for the original ore. The comprehensive analysis and identification for the original ore is generally no longer required. However, the multi-element chemical analysis, phase analysis, particle size analysis and ore containing the determination of the physical properties of the clay content, density and bulk density are necessary.
The third is the process structure. The semi-industrial tests are carried out based on the ore beneficiation methods recommended by the laboratory tests.
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Special Use of the Circular Vibrating Screen

The circular vibrating screen is a kind of important screen equipment, which can be used in various aspects in mining machinery industry. There are the following special uses of the circular vibrating screen.
First, in the design of the attached ceramsite sand equipment namely the circular vibrating screen, the axial force need not to be considered. In the using process, the shaft of the motor should be kept level. When several attached ceramsite sand equipment vibrating screens are used on a template, the frequency of every attached ceramsite sand equipment vibrating screen should be consistent.
Second, before the operation, you should check the attached ceramic sand equipment. In addition, the vibration test is also necessary. The vibration test should not be carried out on the hard material. The rubber pad is very necessary. When the rubber pad is installed, the installation position of the screw on the bottom plate of the circular vibrating screen should be right. The tighten degree of the screws should be consistent.
Third, in the using process, the cable conductor should not be pulled too tightly. During the operation process, you should pay much attention to the safety of the electrical equipments at any time. The vibrating screen moves in a circular motion with multiple layers and high efficiency. The vibrating screen is designed with the barrel type of eccentric shaft vibration exciter and eccentric block to adjust the swing. It is manufactured with long material screen rifling and many screen specifications. The vibrating screen is especially designed for screening stones and features reliable structure, strong vibration force, high screening efficiency, low vibrating noise, excellent durability, convenient maintenance, safe use, etc.
The plate should contact with the concrete. The circular vibrating screen uses eccentric block to produce strong exciting force. Crossbeam and the main body of the screen are connected with high strength screw bolts. It adopts tire clutch with capability of flexible connection and stable operation. It adopts the structure of small amplitude, high frequency, large obliquity to make the screen hold the capability of high efficiency, large handling capacity, long life span, low consumption and low noise.
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Key Technology for Multiple Incinerator of Rotary Kiln

In the multiple incinerator of the rotary kiln for the medical garbage which is composed by the rotary kiln and the circulating fluidized bed, the rotary kiln is used for the pyrolysis incineration of the medical waste. When the garbage is fed into the rotary, the garbage does the rotating movement slowly in the rotary kiln. With the action of the 500℃ to 600℃ hot air, the garbage can achieve the pyrolysis. The flammable gas generated after the pyrolysis us sent to the upper part of the dilute phase zone of circulating fluidized bed for combustion. The rest of the solid materials are sent to the dense-phase area at the lower part of the circulating fluidized bed for combustion. The materials are alternately exposed in the hot flue gas. However, the temperature of the rotary kiln is relatively low. The materials are heated uniformly and slowly. The moisture and the volatilization precipitation is uniform.
According to the great fluctuations of the calorific value, the complex components of the wastes and the strong change for the shape, the security, reliability, maturity and advancement of the incineration facilities should be carefully considered.
Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials. Incineration and other high temperature waste treatment systems are described as "thermal treatment". Incineration of waste materials converts the waste into ash, flue gas, and heat. The ash is mostly formed by the inorganicconstituents of the waste, and may take the form of solid lumps or particulates carried by the flue gas. The flue gases must be cleaned of gaseous and particulate pollutants before they are dispersed into the atmosphere. In some cases, the heat generated by incineration can be used to generate electric power.
The temperature of the furnace of the rotary fluidized bed in this plan is controlled between 850℃to 1200℃. The classifying wind can greatly reduce the precursor of the harmful material. At the same time, the flue gas quench tower combining with the activated carbon adsorption device can reduce the generation and the emission of the harmful materials.
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The Structural Components for Impact Crusher

The multistage impact cavity of the impact crusher has enough room for crushing, which is suitable for crushing the large pieces of the materials. The angle of the impact board of the impact crusher can be adjusted to ensure that there will be suitable angle when the materials are impacted repeatedly between the impact plate and the rotor, which can effectively improve the crushing efficiency. The gradual impact crushing process can effectively reduce the energy consumption in the crushing process.
The rotor of the impact crusher can be divided into the single rotor and double rotor. The rotors are mainly welded on the barrel through the carbon-dioxide arc welding. Then you can surfacing the wear layer. The impact crusher produced by Henan Hongxing Mining Machinery has simple structure, which is suitable for the small and medium mine factories. According to the rotation of the rotor, the rotor can be divided into the one-way rotation and bi-directional rotation. There are two kinds of structure at the lower part of the rotor, namely the structure with even labyrinth plate and the structure without labyrinth plate of the impact crusher, which can control the particle size of the products. There are fewer too large particles and the particle size of the products is even. The hanging point of the even labyrinth plate can be moved horizontally in order to be suitable for various crushing conditions. The lower end of the labyrinth plate can compensate the change of the discharging gap due to the attrition of the labyrinth plate and the plate hammer by adjusting the angle between the adjustment mechanism and the rotor.
The plate hammer of the impact crusher is firmly fixed on the rotor, which is generally equipped with six pieces of plate hammer. The plate hammer is made of the wear high manganese steel material. The rotor itself is fixed on the shaft with the key. The two ends of the shaft are supported on the lower frame with the rolling bearing. Therefore, the torque of the crusher equipment is small so that part of the moving balance of the rotor is easily to be controlled and the dynamic disturbing force of the moving process is small.
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Hongxing Machinery Should Grasp the Frontier Technology

Henan Hongxing Mining Machinery is a professional mining machinery manufacturer in domestic cement and concrete industry. Henan Hongxing Mining Machinery always focuses on the technical innovation of the crushing equipment and milling equipment. There will be some technical guidance in this article. The technical engineers and the sales staff will also share the frontier technology and the concept of the matching and performance of the concrete, the sand and gravel aggregate and the milling technology. As the leader in the mining machinery industry, Henan Hongxing Mining Machinery is committed to the chemical process of cement and concrete and the study on the new building materials. In the practical engineering applications, many of the patented technology in the industry have had a major impact.
Where there is concrete, where there is sand and gravel. The gravel accounted for 70% of the volume fraction of the concrete and the weight fraction is about 80%. The particle size, shape, strength and the grading of the sand and gravel has important effect on the working performance, mechanical properties, durability and even the service life of the building of the concrete. Therefore, for the sand making machine and the coal ash admixture, the deep research is very necessary, which makes the customers pay more attention to the crushing and milling machinery.
In the products exhibition area in the workshop, the experts have a good understanding of the technical parameters, performance indicators of the sand making machine and the milling machine and they recognize the energy efficient design of the milling and crushing machinery. The quality of the crushing machine and the milling machine produced by Henan Hongxing Mining Machinery has been fully affirmed. The quality of the sand and gravel aggregate and the admixtures is very important. For example, the mechanism sand with polygon can be used in the configuration of the concrete. The contact surface is large and the condensation is very good. High-quality coal ash can be used to improve the quality of the concrete.
Starting from the production of the cement and the concrete, Henan Hongxing Mining Machinery is committed to a better understanding about the needs of the customers to provide the more frontier and richer products with market value.
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How to Adjust the Discharging Port of the Jaw Breaker

The jaw crusher is widely used in the fields of mining, construction, cement, highway and building materials, which is one of the shining stars among the crushing and screening equipment. However, in the difficult operating environment, the tooth plate of the jaw crusher tooth is easily to be worn so that the discharging port of the crusher extends and the particle size of the products become coarse. Therefore, in order to get the product materials with even particle size, the discharging size of the jaw crusher should be regularly adjusted.
The thrust plate of jaw crusher is also known as the bracket. The transmission power can make the jaw plate do the swing movement. In addition, the thrust plate also plays the security and insurance role. Changing the length of the thrust can adjust the discharging port of the jaw crusher. According to the study summary, the professionals of Henan Hongxing Mining Machinery have put forward two ways to adjust the discharging port of the jaw crusher.
The first way is the adjustment for the wedge. You can use the two wedges between the back seat of the thrust plate and the rack, which is suitable for the small crusher machine.
The second way is the adjustment for the gasket. You can put a group of pads between the back supporting seat of the thrust plate and the back wall of the rack and reduce or increase the number of the pads. You can change the thickness and adjust the discharging port. The structure is compact and the adjustment is reliable. The large and medium jaw crusher mainly uses this kind of adjustment methods.
Finally, after buying the crusher machine, you should carefully read the related operating knowledge. For the knowledge you do not know, you should carefully consult the professionals and master the structural principles and operation and maintenance skills in order to better stabilize the production.
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How to Identify the Crushing Effect of Crusher Machine

In the working process of the crusher machine, the stone materials usually first directly fall into the turntable which rotates with high speed from the upper part of the crusher machine. With the effect of the high-speed centrifugal force, the stone materials and the other flying stones distributing in the umbrella type produce high-speed collision and high-intensity crushing. After the stone materials are hit each other, they will fall down between the turntable and the shell of the machine to form the swirling motion and cause mutual combat, friction and crushing for many times. The materials are directly discharged from the lower part of the machine and form the closed loop. The screening machine is used to control the required particle size of the materials.
At present, the production of the crusher machine has gradually become a very important standard to measure an equipment enterprise. Then how can we know if the crushing effect can meet the production standard and meet the energy and raw materials requirements for the development of the national economy?
For this problem, the professional and technical personnel of Henan Hongxing Mining Machinery have given detailed response to us. The crushing ratio is often used to measure the crushing effect of the crusher machine. The crushing ratio of the crushing machine is the accuracy ratio between the particle size of the raw material and the particle size of the crushed products, which indicates the reduction degree of the materials broken. There are three ways for the calculation of the crushing ratio. First, the ratio between the largest particle size of the materials before crushing and the largest particle size of the materials after crushing can be used to calculate the crushing ratio. Due to the different national habits, the maximum granularity value methods are different. Second, the ratio between the effective width of the feeding port of the crusher machine and the width of the discharging port of the crusher machine can be calculated as the crushing ratio. The evaluation of the width of the discharging port for the coarse crusher should be the largest, while the evaluation of the width of the discharging medium crusher should be the smallest. Third, you can use the ratio between the average diameter of the materials before crushing and the average diameter of the materials after crushing as the crushing ration, which can really reflect the crushing degree of the crusher machine.
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Various Types and Uses of the Screening Equipment

There is a wide range of the screening machinery and equipments and they are widely used in many industrial sectors. In order to select the screening equipment in the mining fields, we must first understand the structure and working principle of the screening equipments, then consider their strengths and weaknesses. Finally, we should select the scope of application. The screening machinery and equipments can be divided into the followings based on the structure and movement of the screen surface.
The first is the shaking screen. The shaking screen is composed by the rectangular screen box with a flat-screen surface, the fulcrum bar or the suspender with the bearing screen box, eccentric gear and the rack. The crank-link mechanism can be used as the transmission part. When the shaking screen works, the motor drives the rotation of the eccentric shaft through the belt and pulley. The connecting rod can make the machine do the reciprocating movement along certain direction.
In order to make the materials can move along the screen surface to the discharging end, the screen surface is generally installed obliquely. The screen surface can also be installed horizontally, but the movement of the screen box must be differential. The shaking screen has the advantages of high screening efficiency and high productivity. The shaking range will not change with the change of the feeding amount. The movement is stable. However, the efficiency and dynamic equilibrium is poor.
The second is the vibrating screen. The sieve box of the vibrating screen is similar to the sieve box of the shaking screen. However, the support and the hanging screen box use the spring assembly. The vibration of the screen box mainly relies on the exciter. The exciter is an elastic vibrating system. The amplitude is affected by the feeding capacity and other dynamics factors.
The movement of the vibrating screen is characterized by high frequency and small amplitude. The materials can jump on the screen surface. Therefore, the production capacity and screening efficiency are high. The vibrating screen can be used for various screening operations in the coal preparation plant.
The third is plane movement screen. The motion for the plane movement screen is the swing and vibration in a plane. According to the motion trajectory, the motion can be divided into linear motion, circular motion, elliptic motion, and complex motion.
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Mining Machinery Need Comply with Building Materials

At present, green building materials have become a major issue for China's urbanization and urban development field, which is also the important task to increase the science and technology to strengthen the people's livelihood. In order to improve the universal low-carbon environmental awareness and promote social and energy-saving and emission reduction, the government has taken a series of standardized measures about green building materials and the energy-efficient building. At the same time, the mining machinery industry also gradually began the technological innovation to speed up industrial restructuring and upgrading and integrate into the future trend of environmental protection of the building materials market.
According to foreign reports, the demand for the plastic wood materials in North American and Western European countries increase at the rate of 10% per annum. It is expected that the new materials for the replacement of the traditional wood will continuously penetrate the building materials market in a few years and they will grow at a fast speed. When the consumers are familiar with the new materials, the business continues to accelerate the improvement of the appearance of the products, the fusion of advanced technology and the expansion of the field, which gradually sets off the wind of environmentally friendly green building materials.
In the domestic market, since the new materials are limited by cost, market and the technical barriers, the market prices of the materials are relatively high so that the overall technical level of the product is relatively low, which seriously hinders the large-area promotion of the green building materials market. Green building material is the inevitable result of the development of the market. As a result, the mining enterprises need produce more crusher machine made of the green materials to promote the self development to create unlimited potential for development of the industry.
New energy saving and environmental protection building materials will become the main trend of the industry in the future, which has provided an opportunity for the future development of the mining machinery. The mining enterprises should grasp the opportunities to improve the working efficiency of the crusher equipment.
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How to Judge the Carrier Roller of Belt Conveyor

The carrier roller is a very important component to support the weight of the belt of the belt conveyor and the materials on the belt conveyor, which accounts for 35% of the total cost of a machine and withstand more than 70% resistance. As a result, the quality of the carrier roller is particularly important. We can judge the quality of the carrier roller of the belt conveyor from the three aspects, namely, the radial play eccentricity, flexibility ratio of the roller and the axial movement. The experts of Henan Hongxing Mining Machinery will detailed analyze the three aspects in the following paragraphs.
First, in terms of the flexibility of the carrier roller, in the running process of the carrier roller, the flexibility is very important. If roller has poor flexibility, the whole conveyor have to pay a greater power when the coefficient of the rotary resistant is high, which will consume more power. Sometimes, the tape may be torn and the motor may be burned. Seriously, fire disaster may be caused. As a result, select the carrier roller with low coefficient of the rotary resistant is the important content for the design and selection of the belt conveyor.
Second, in terms of the radial play eccentricity, the carrier roller can ensure the stable operation of the belt conveyor when the carrier roller is in the specified range. Otherwise, the resonance beating of the tape of the belt conveyor will occur, which will cause the scatter of the materials and the environment will be polluted. When the speed of the belt is high, the benefit of the small radial eccentricity is very obvious. China's national standard for the radial play eccentricity is 0.7 mm, while the Japan’s standard radial play eccentricity is 0.5mm.
Third, in terms of the axial movement of the carrier roller, at present, the manufacturing technology of the domestic belt conveyor becomes more and more advanced. However, the axial movement is still an important topic which needs further study. Since the too large axial movement of the carrier roller will cause early damage, the axial movement had better be controlled between 0.5mm to 0.7mm.
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Maintenance Work of Spare Parts of Hammer Crusher

The maintenance work for the spare parts of the hammer crusher is very important to improve the production efficiency and the performance of the hammer crusher. The maintenance work of the spare parts of the hammer crusher can be divided into the following aspects.
The first is the maintenance for the hammerhead of the hammer crusher. The hammerhead is the main working part for the hammer crusher. The production capacity of the whole crusher is related to the shape, quality and the material of the hammerhead. In particular, the shape has great impact on the uniform distribution of the quality and the full advantage of the materials. The hammer crusher is suitable for the cement, chemical, electric power, metallurgy and other departments. Therefore, the shape of the hammerhead can be roughly divided into light type, medium type and the heavy type.
During the operation, the hammerhead subjects to the dual role, namely the shock and the impact of the materials. After the long-term repeated use, the working face of the hammerhead will be damaged so that the surface shape changes. Therefore, we need to frequently replace the hammerhead. The factors affecting the service life of the hammerhead include the structural design and the quality of the hammerhead, the technical parameters of the hammer crusher, the hardness and the lumpiness of materials, and the inner adjustment of the gap of the hammer crusher.
In order to improve the abrasion resistance of the hammer crusher, the material selection of the hammerhead is a key issue. However, the choice of the materials depends on the working conditions and requirements of the working parts. Therefore, if the hammer crusher is used to crush the limestone and other materials with medium hardness, the hammer head is generally made of the high-carbon steel or the high manganese low alloy steel. Sometimes, the working surface will be coated the carbide. Some hammerhead is made of the high chromium castiron whose wear resistance is several times greater than the wear resistance of the high manganese steel.
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Matters Need Attention for Check of Vibrating Screen

The vibrating screen is a common machine in the mining machinery industry. We must understand the notes for the check of the vibrating screen in the following aspects.
First, when the vibrating screen is installed on the steel structure platform, you need to fix it with the bolts. The table board of the steel structure should have certain degree of stiffness. If the vibrating screen is installed on the ground of the cement foundation, you need not fix it with the anchor bolts.
Second, only a three-phase switch is needed for the vibrating screen. You had better use the electrical control panel. You can put the wire connected to the power supply with the snakeskin tube. For safety, you must install the electrical control panel on the wall. Before the vibrating screen is connected with the electrical control panel, you should check if the electrical control panel is normal.
Third, before starting the vibrating screen, you should check if there is damage of the coarse mesh and fine mesh and if the toe ring is locked tightly. After the starts, check if there is abnormal noise of the vibrating screen, if current is stable, and if the vibration is normal.
Forth, in the initial period of the vibrating screens, you should always check if there is looseness for the components and the anchor bolts of the vibrating screen. If you find there is looseness, you should timely fasten it so that the vibrating screen can work normally.
Fifth, check whether there is attrition for the connecting rod from the vibrating screen to the switch. When you replace the cable, you should use the neoprene vibration-resistant cable. Operation with missing items is prohibited.
Sixth, after the start of the sieve, you should if there are other things affecting the movement of the reel in the operation space. Then you can feed materials to the surface of the sieve. You should often check if there is looseness for the sieve.
Seventh, note that if there is unusual sound for the sieve. The vibration of the screen frame should be smooth. There should be no normal swing. When the sieve shakes, you should check if the elasticity of the four support springs is the same and if there is break situation.
Eight, check whether the direction of the vibrating motor is in opposite direction operation. If you find the rotation direction is wrong, you can adjust the eccentric block under the vibrating motor.
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Introduction to Crushing Theories of Crusher Machine

Many people think that the mineral crushing is to impose pressure on the materials to make the materials deform. When the energy absorbed by the deformation is sufficient to overcome the binding force between the materials, the displacement of the materials may be generated, which is called the lattice displacement in the micro point. In the macro point, the materials are crushed. In the history process for crushing the materials with purpose, people have developed a variety of mechanical crushing equipment devices, such as jaw crusher, gyratory crusher and impact crusher. These traditional crushing equipments are still in use. The basic crushing theory has not been changed.
With constant further study on the materials and the improvements of the test means, the modern mechanics of materials science is gradually established. There are great changes in terms of the understandings of people for the properties and the performance of the materials. We can use the modern testing techniques to achieve the mechanics analysis about the rock. It was discovered that the capacity that the rock withstands the pressure destruction is far greater than its ability to withstand the shearing force destruction. After the test, the ultimate compressive stress of the rock is 6 times to 10 times as the limit shear stress and it is 2 times to 4 times as the ultimate tensile stress. For a long time, people only use the extrusion method to crush the rocks but not use the more reasonable ways, such as stretching method or the shearing methods.
The grading crusher machine with high strength is designed based on the shearing crushing principle of the rocks. That is to say that a shearing force is imposed on the rock to make the rock can generate the bending torque by withstanding the shearing force to make the rock crushed. The final particle size of the materials crushed by the traditional crusher machine is very difficult to control. The high-strength grading crusher machine produced by Henan Hongxing Mining Machinery has the advantages of large crushing capacity and small floor space. This kind of crusher machine has much more advantages than the traditional crushers.
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Profiles of the Incineration Device of Rotary Kiln

With the improvement of people's living standards and the implementation of the country's industrialization process, the material consumption of the whole society rapidly increases. Therefore, the large amount of wastes and the damage to the environment have become a very important issue for us. Since the capacity of the soil, water and air for the waste in the whole nature is limited, the improvement of the public environment protection consciousness and the resource recycling consciousness, and the booming development of the international environmental protection industry have put forward higher and higher requirements for the disposal of the wastes.
One part of the waste has great damage to the natural environment and people's lives. The problems have existed for a long time, so they belong to unresolved issues. For example, the wastewater and sludge from the industries, such as chemical, metallurgy, printing and dyeing industry or the wastes from the medical system will cause much more serious damage to the environment and the health of the human and animals than the damage caused by the general wastes. In addition, this destruction is long-term and latent. There are many incineration devices to deal with the hazardous waste. The devices mainly include the single-chamber incinerators, duplex incinerators, fixed bed control of oxygen incinerators, mechanical hearth incinerators, rotary kiln fluidized bed incinerators, liquid injection incinerator, plasma electric arc furnace and plasma gasification furnace.
The temperature in the rotary kiln is very high, which can burn almost all organic hazardous wastes. Improving the temperature is helpful for the decomposition of harmful components in the wastes and can inhibit the generation of black smoke. However, too high temperature not only increases the consumption of the energy and reduces the economy, but also is easy to damage the liner in the furnace, which will shorten the service life of the rotary kiln. In addition, too high temperature will increase the volatile amount of the metal and the generation of the nitrogen oxides in the wastes. As a result, we must choose and control reasonable temperature for the incineration of the waste in the incineration device of the rotary kiln.
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Hongxing Strives to Produce Crushers with Different Types

For China's coal industry, after half a century’s development, China has become the world's first major coal country. Over the past decade, the excessive total coal production, the diversification of the energy structure and the development of energy-efficient technologies had caused the oversupply problems in coal. The experts of Henan Hongxing Mining Machinery predict that the position of the coal will rise in the world energy by 2025 due to the reduction of petroleum and natural gas resources. Overall, China belongs to coal-rich country with lean coal. The coal is in rigid in the country's energy structure. It is expected in the mid-21st century coal will account for 45% -50% in the primary energy. Therefore, coal industry is still the basic industry related to the sustainable development of the national economy.
China’s coal resources are rich, but the coal seam conditions and the geological structure are complex. There are many outburst coal layers of the coal and gas, which leads to the complication for the safety in the coal production. In addition, with the increase of mining depth and the development of the high-yield and efficient mine, the coal mines are faced with many new security problems.
We should promote the use of new technology and equipment and coal preparation technology to accelerate the modernization of large-scale coal mining and crushing equipment to achieve the intelligent and efficient development of the coal industry. The coal crushing is the most critical part of the coal mining. The crushing degree directly determines the utilization degree of the coal. Therefore, choosing the modern and technological coal crusher machine is the key to improve the yield of the coal enterprises. Henan Hongxing Mining Machinery Co., Ltd. conforms to the development trend of the coal industry and has produced the most advanced new generation of coal crusher machine, coking coal crusher, ring hammer crusher for raw coal, the reversible crusher for clean coal and other equipments. The crusher machines have simple structures and large crushing ratio. The crushers can achieve the automated operation, which significantly saves the costs for the coal enterprises.
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How to Check the Rationality of Design of Crusher

When we use 3D design software to establish the general assembly of the jaw crusher, it is intuitive and the designers can carry out the parametric design, strength, stiffness checking, interference checking and motion simulation to test the correctness and rationality of the design.
The first is the parametric design. The designers may need to improve and modify the crusher based on the designed crusher, which needs the parametric design to achieve the serialization of the products in order to avoid the repeatability of the design. The sketch for the 3D models and assemblies is variable and the sketch dimensions, features and fitting dimensions are parameterized driven, so it very convenient to achieve parametric design. You can take the following measures to achieve the parametric design of the crusher. First, you can directly modify the size, compress or add features. Then you can save it as a new part or assembly. Second, the 3D software design provides very convenient tools to generate different configuration of the part or assembly. Third, the software provides good API. The design staff can conduct the secondary development to achieve the parameterized design of the crusher
The second is the strength and stiffness checking. The crusher 3D models created by the software can set the material, which has certain physical properties and can check the strength and stiffness of the parts and the assembly of the crusher machine. The plug can carry out the static and dynamic finite element stress analysis for the parts of the crushers. The data is very accurate, which can be saved into a form of animation or web page.
The third is the interference collision checking. The soft ware provides the static interference checking and dynamic collision checking for the assembly to ensure that there is no mutual overlap between any two parts in the space. In addition, it can be used to dynamically simulate the movement effect of the parts in the crusher machine. The image is vivid image and we can timely find the problems to modify them.
The forth is motion simulation. The kinematic simulation of the structure of the crusher is achieved through the degrees of freedom of movement and parameters created and animated by the defined parts of the existing three-dimensional model of the crusher. It is created by animation way. You can see the real-time trajectory by using the plug in the software.

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Improvements of the Positioning Means of Cone Crusher

Cone crusher with large crushing ratio, high yield, small power consumption and uniform particle size is suitable for the hard ore, which is widely used in the mining machinery industry. Among the cone crushers, the standard-type cone crusher and the short-head cone crusher are most widely used. In the production and application, we often find that the fixed location between the bowl-shape bearing block and the watt of the supporting movable cone is not reasonable, which causes the dislocation between the bowl-shaped watt and the bowl-shaped bearing so that the oil return hole of the bowl-shaped bearing is blocked which has a great impact on the normal operation of the crushing machine. In terms of the existing problems in the operation, we should improve the positioning of the cone crusher.
The bowl-shaped bearing is composed of the bowl-shaped seat, the bowl tile and other parts. The bowl-shaped watt is installed in the hole of the bowl-shaped block. There is no oil return groove or the hole on the bowl-shaped block and the bowl-shaped watt. You can distribute 12 dowel holes (blind hole) of 16mm at the outer edge of the bowl-shaped seat and stuff 10 dowel pins. The two symmetrical locations are used to install the copper tile rings. 12 holes should be drilled on the corresponding position of the bowl-shaped watt. Two of the holes are used to install the rings, and the remaining 10 holes are used as the through-hole of 16mm. After you have positioned the bowl-shaped watt, you should ensure the oil return is smooth and unhindered. There should be certain clearance between the positioning pins and the copper tile hole. Then fill and fix the molten zinc alloy.
After in-depth analysis, the engineers decide to maintain the original location in the same way. Distribute 6 through hole of 19mm at the radius of the original positioning on the bowl-shaped seat and bowl-watt. Add a boss on the bowl-shaped seat to ensure that the screw will not bend after fastening.
According to the practice, there is no dislocation of the cone crusher in one year-old operation. The improvements have extended the maintenance cycle, reduced the labor intensity of the maintenance staff and saved the maintenance cost. 

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Hongxing Sand Production Line Strives to Reduce Costs

The investment on the stone production line is a large sum of business, so Hongxing Mining Machinery strives to reduce the investment cost, which is also a major concern of the majority of users, as well as the main object of study in the course of future development of the mechanical industry. According to the customers' long-term use, the machinery and technical personnel of Henan Hongxing Mining Machinery have summed up a series of tips besides the basic restructuring to effectively use the characteristics of the stone production line to increase production and help to reduce production costs.
First, we must understand the functional characteristics and the workflow of the gravel production line equipment. The stone is crushed by the primary crusher. The stone which can meet the feeding size enters the sand making machine for fine crushing. The coarse material is sent to the fine crusher through the belt conveyor for further crushing. The other materials enter the sand making machine for crushing. The materials after fine crushing enter the screen for sieving. The sand production line produced by Henan Hongxing Mining Machinery has high performance and high efficiency, which can be used for many purposes.
The most important equipments in the sand production are the sand making machine and the crushing equipment. The sand making machine has the reshaping effect, which is very suitable for producing the sand and gravel needed by the construction project for the high-way road. Generally, the sand production line can be divided into the dry type and the wet type. There are many shortcomings in using the wet-type sand production line process. For example, the fine sand may be drained off. The powder quantity in the sand product is too low, which will affect the operation of the sand making machine. In order to process the traditional wet-type sand making process, Henan Hongxing Mining Machinery uses the new generation of high-efficiency crushing machine as the core crushing equipment by combing with the multifunctional gravel production line series equipment.
Henan Hongxing Mining Machinery is a professional sand making manufacturer. The sand making machine and crushing machine produced by Henan Hongxing Mining Machinery can help the customers effectively reduce the maintenance cost and the investment cost.

The Structure Type of Hongxing Impact Crusher

There are many structure types of the impact crushers. In this article, the experts of Henan Hongxing Mining Machinery will introduce the structure type for the crusher users.
First, the first is the self-gravity structure type. The impact plate maintains the normal position through the self gravity. When the crusher meets the foreign body, such as the large piece of iron block, the impact plate rises around the deflection of the hanging spindle with the action of the impact of the ore blocks. When the foreign bodies are discharged, the impact plate will reset with the action of the self gravity. The gap between the impact plate and the plate hammer is adjusted by the nut of the hanging screw. The impact plate of the single-rotor impact crusher uses the self-gravity structure of the impact crusher.
Second, the heavy hammer structure impact crusher uses the lever hammer to the normal operating position of the impact board. The size of the balance force can be adjusted by the displacement of the heavy hammer on the lever the bolt is used to fastened it.
Third, the spring structure type impact crusher uses the preload force of the spring to maintain the normal operating position of the counter plate. With the impact action and the compression deformation of the spring, the impact plate rotates around the suspension spindle to make the foreign body discharged. Then the impact plate resets automatically. The spring adjusting mechanism also plays the security role. You can choose the coil spring and you can also use the composition structure with the plate spring and lever. The latter can use smaller amount of compressive deformation to get a larger passing spacing for the foreign body. However, the structure is not compact, which occupies large space. The reasonable spring insurance institutions should be able to ensure the adjustment of the discharging gap adjustment without readjusting the preload of the spring, which can simplify the process of adjustment of the discharging gap. The spring adjustment and safety device of the domestic impact crusher have the above-mentioned structural features.
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Installation and Commissioning of Rotary Impact Crusher

The scientific management of the impact crusher is a very important part for the management of the comprehensive quality of the crushing equipment. The scientific management of the impact crusher runs through the whole process of the reasonable design, production and manufacturing, packaging, transportation, installation and commissioning, safe operation, maintenance and repair. The above stages have an extremely close relationship. If the blocking phenomena often appear in the impact crusher with some type in the actual use, the structure design of the machine should be further improved. Therefore, we should consider the problem from the size of the section area of the feeding port and the height size or the cross-sectional size of the whole crushing cavity. In short, the structural design of the crushing chamber should meet the principle of smooth feeding and discharging. This article will detailed explore the installation and commissioning of the rotary impact crusher.
After unpacking, you should check if the spare parts, spare parts, manuals, certificates and other design documents are complete according to the container loading list. If the parts are not enough, you should contact with the manufacturer in a timely manner. You should carefully check the related size for the installation of the main parts. You should specially note that if the base drawings, foundation and the material objects are coincident. If they are not coincident, you should correct them and then install them. After the size check, you should thorough clean the parts. After cleaning, you should particularly careful to protect the friction surface of the parts in order to prevent dust pollution and to prevent the damage to the friction surface. If the parts are not installed in a timely manner, they need to be kept well. Coat the surface with oil to prevent rust. 
There is a base plate under the rack of the crushing machine to adjust the balance. After long-time use of the machine, you should repair it or replace it. The position of the base plate should be close to the foundation bolt. Cleaning the foundation before the installation is very important. You should clean the aggradation and sundries on the foundation.
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The Detailed Description for Hongxing Rotary Kiln

In the wet kiln, due to the slow heating rate and the lag of the carbonate decomposition, parts of the decomposition reaction and the solid-state reaction coincide. Since the ambient temperature is low, the CaO early decomposed can not have the effective solid-phase reaction so that the activity is decreased. The parts overlap of the carbonate decomposition process and the solid phase reaction make the heat gradually emitted by the solid phase reaction only consumes in the carbonate decomposition process, so the exothermic reaction performance is not very obvious.
In the precalciner kiln, the material decompositions often happen in the decomposing furnace. Since the materials are in suspension state in the calciner, it is very difficult to carry out the solid-state reaction for the materials in the decomposition furnace. The temperature of the most of the materials which have been decomposed rises rapidly when they enter the rotary kiln to forma the concentrated solid-state reaction zone. The solid phase reaction is exothermic, which further facilitates the rapid warming of materials and can ensure the stability of the kiln thermal system. In addition, in the precalciner kiln, after the materials enter the rotary kiln for tens of seconds, the new ecological substance rapidly enters the rotary kiln for reaction. Due to the rapid calcination, the new ecological CaO has the features of large lattice constant, many defects, incomplete lattice and small crystal and grain size, which can prompt the rapid generation of the small silicate minerals.
According to the many years’ experience and the advanced technology of the rotary at home and abroad, Henan Hongxing Mining Machinery has developed and researched the new generation of rotary kiln. This kind of rotary kiln has remove the shortcoming of the traditional rotary kiln and the working efficiency has been improved greatly. In addition, the new generation of the rotary kiln produced by Henan Hongxing Mining Machinery has the advantages of high efficiency, low energy consumption and low production cost. As a result, the new generation of rotary kiln has been more and more widely used in the mining industry.
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Analysis about Spiral Diameter of the Spiral Classifier

Spiral classifier is the main factor to determine the circulating load. We must appropriately choose the spiral diameter or change the rotating speed and the power of the spiral according to the sand particle requirements in the concrete engineering design so that the spiral is running in the best state. Beside the above points, the selection basis should be determined according to the concentration of the particle size of overflow and the length and particle size of the classifier.
Under the premise to meet the processing power of the spiral classifier, we should try to choose the single spiral classifier, because the negative leaning of the double screw conveyor is only 60% to 70% of the single spiral. When the spiral classifier is combined with the grinder and the screening machine, the production capacity of the spiral classifier should be matched with the former and there should be certain room. The reference margin should be 1.5 times. The production output of the spiral classifier matching with the rod mill should be 1.5 times as the production output of the rod mill. When you choose the spiral classifier, you should refer to the empirical data. In the artificial aggregates cattle production, the spiral classifier is also used to recover the stone chips and fine sand for recycling. At this time, the actual working conditions should be determined by the actual working production situation. The productivity of the spiral classifier is calculated by the overflow meter of the spiral classifier. The efficiency depends on the particle size of the overflow, the proportion of the materials, the size composition of the materials and the overflow concentration. The productivity of the spiral classifier is almost proportional to the specific gravity of the materials to be processed.  
Henan Hongxing Mining Machinery is a professional manufacturer for producing the spiral classifier. According to many years’ production experience and absorption of the advanced technology of the spiral classifier at home and abroad, Henan  Hongxing Mining Machinery has designed and produced the new generation of the spiral classifier for customers. The new generation of spiral classifier will bring you more benefit.
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Introduction to Stone Production Line and Stone Types

In 1983, Henan Hongxing Mining Machinery quarry labor service stone production line established the quarries, which produced the rubble, material stone, gravel and other basic manual work.  The annual output of the stone production line is 3000 to 8000 cubic meters. There were 98 employees in 1987 and the output value was 11 million yuan at that time. There are 35 sets of processing equipment for gangue processing. The annual gangue processing capacity is 250,000 tons. In 1987, the output value was 38 million yuan with 180,000 yuan profits.
In the saturation humidity, the uniaxial ultimate compressive strength of the rock specimen is greater than 29.4 × 103KPa, such as the granite, diorite, basalt and others. The types stone for stone production line include the igneous rocks, such as the iron, calcium cemented conglomerate, sandstone, limestone, argillaceous limestone, dolomite and other sedimentary rocks, gneiss, quartzite, marble, slate and other metamorphic rocks. In the natural humidity, the uniaxial ultimate compressive strength of rock specimens is 4.9 × 103KPa to 29.4 × 103KPa, such as the tuff, pumice igneous rocks. The types of the stone production line also include the mud conglomerate, argillaceous shale, argillaceous sandstone, marl, mudstone, and the hard rock whose intensity is reduced to 4.9 × 103KPa to 29.4 × 103KPa due to weathering action. In the natural humidity, the limit of the rock specimen of the uniaxial compressive strength is less than 4.9 × 103KPa, such as claystone, coal and other sedimentary rocks, mica schist or phyllite and other metamorphic rocks.
The rocks can be divided into several types according to the crushing degree. The first type is the large blocky shape. Most rocks are divided into the rock rocks which is more than 40cm. The second type is the block broken shape. Most of the rock bodies are divided into the rock blocks that is 20cm to 40 cm. The third type is the gravel shape. Most of the rocks are divided into the rock blocks that are 2cm to 20cm. The stone produced by the stone production line is a kind of very important building materials in the road construction projects. The range of applications is very wide. The common stone production line includes the granite, gneiss, diorite, sandstone, limestone and other stone production lines.
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Stone Production Line Is Used for Crushing Scrap Iron

In terms of the scrap stone production line, the manufacturing technology is very complex and the production costs are high. However, since the advanced technology, wide processing range and high productivity, the stone production line is relatively ideal equipment for processing the scrap iron and the steel. In addition, the stone production line can select the non-ferrous metals, exclude non-metallic debris and process the high-quality scrap steel with high purity. The environmental pollution is also small in the process of the stone production line, so it is known as the current advanced processing equipment for processing the scrap steel and the iron.
At present, there are already nearly more than 700 scrap steel stone production line running around the world. The broken steel into the furnace proportion rises rapidly. The proportion in some countries has reached more than 45%. The stone production for crushing and screening the scrap iron and steel produced by Henan Hongxing Mining Machinery is suitable for the production of high-quality metal charging used for the electric furnace and the converter steelmaking.
Fist, we can crush the thin and light scrap iron whose thickness is below 6mm into the fragments whose length is not more than 150mm. Then we should remove the non-ferrous metal, alloy metal parts and the non-metallic impurities in the scrap iron and steel. The scrap steel crushing and screening stone production line includes the crusher machine, the hammer clastic machine, rotary screen, tumbling rotary kiln, preloading means and the conveyor system. The working sequence of the stone production line is as the followings. The electromagnetic grab crane is used to send the large thin scrap steel into the charging chute of the crushing machine. In the charging chute, the materials are pre-crushed into the material block whose size is not more than 800mm. The scrap steel is rotated by the rotating crushing machine and they are crushed by the star wheel. Then the materials fall on the plate conveyor evenly along the charging wash tank. The materials are transferred to the crusher. The scrap steel which falls in the classtic machine is crushed by the hammer with high rotating speed. The small pieces of scrap steel after being crushed enter the belt conveyor along the bottom screen bars of the crusher.
In the crushing process, the small impurities and other non-metallic impurities are screened out. The adjustable speed electric drive device is installed in the conveyor to guarantee the normal work of the crusher transmission.
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