Ways to Reduce the Beneficiation Loss of Magnetite

For the magnetite ore dressing, the advanced ore beneficiation process can not only help us to save energy and reduce the beneficiation loss rate, but also can fast recover the processing costs. The advanced beneficiation process has played a very important role for improving the economic benefit. In the following paragraphs, the experts of Henan Hongxing Mining Machinery will carefully analyze the ways to effectively reduce the beneficiation loss for the magnetite from various links.
First, in terms of the improvement for the working effect of the sculping screen, we can use the sculping screen with high efficiency and the mesh with large aperture ratio. We can set a fixed screen or asieve bend before the sculping screen. The density of the underflow of the heavy medium cyclone is too high and the sculping effect is poor. Part of qualified suspension of the clean coal under the screen can be introduced to dilute the bottom currents and improve the sculping effect. The water spray for the products sculping sieve should be enough. The clean water can use the pressure water jet, while the recycled water can use the non-pressure water jet.
Second, the direct magnetic separation process with dilute media can be used. The practice of the coal preparation plant has proved with the direct magnetic separation process with dilute media can make the consumption of the media significantly reduce.
Third, the recovery rate of the magnetic separator should be ensured. Generally, the recovery rate of the magnetic separator should be ensured more than 99.8%. Large amount of the dilute media is recovered through the magnetic separator. The working efficiency of the magnetic separator has great impact on the loss of the magnetite. For example, if the amount of the magnetite ore into the magnetic separator is 6000kg/h and the recovery rate of the magnetic separator is 99.9%, the loss of the magnetite ore is 6kg/h. If the recovering rate of the magnetic separator is 99%, the loss of the magnetite ore is 60kg/h.
Forth, the liquid level of the machine should be keep balance to avoid the clogging phenomenon.

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Solution for Breakage of Spindle and Bush of Cone Crusher

The cone crusher is favored by a lot of mining enterprises because it has a lot of advantages. However, the economy in this year is not booming, so the mining machinery industry suffered a landslide. With the economic policy, the domestic economy begins to recovery with stability. Especially some of the large projects promote the development of the cone crusher. In this article, the experts of Henan Hongxing Mining Machinery will mainly analyze the solutions for breakage of the spindle and bush of the cone crusher.
When the cone crusher works normally, the crushing cone does the regular movement. The center line of the crushing cone and the eccentric sleeve are not on the rotating centerline. Therefore, in the operation process, the inertia force and the inertia moment of force for the fixed suspension point is bound to be produced. They are acting on the rack of the cone crusher. Although balanced measures have been taken for the cone crusher, the errors in terms of the manufacturing and installation may lead to the frequent contact between the lower end of the spindle of the crusher and the eccentric sleeve, which may cause breakage of the spindle. The lower end of the cone bushing may be broken. The breakage of the spindle may have a great impact on the service life of the crusher.
The experts have put forward the following ways to avoid the breakage of the spindle. On the belt conveyor before the cone crusher, install a metal detector and the suspension magnets to remove the metal objects in the ores to prevent the metal objects from falling into the crushing cavity. During the installation process, the heating temperature of the cone body and the cooling speed after the assembly should be controlled strictly to improve the strength of the spindle and reduce the concentration of the stress. Before the assembly, you should carefully check the hole and the spindle to prevent the unnecessary inner stress. The structure of the spindle should also be improved.
In terms of the cone sleeve, you should make the two thirds of the contact area of the sphere bearing on the outer ring when the sphere bearing is replaced.
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Common Notes for Commissioning of Cone Crusher

If there is something wrong with the cone crusher equipment in the actual operation process or the cone crusher machine needs normal maintenance, the operation for the machine need to be stopped to check and maintain the related machine. After the check for the cone crusher, the cone crusher can not be put into use immediately. The commissioning for the cone crusher is very necessary to ensure the success of the check and maintenance for the cone crusher to reduce the inappropriate faults of the machine. In this article, the experts of Henan Hongxing Mining Machinery will carefully analyze the common notes for the commissioning of the cone crusher.
The commissioning of cone crusher with empty load has the following requirements.
First, start or stop the machine according to the starting program. The respective interlock system shall comply with the technical requirements.
Second, the moving cone should rotate forward or reversely. 15 revolutions per minute should not be exceeded.
Third, there should be no impact or periodic noise for the gear of the cone.
Forth, the lubrication system should work normally. The oil pressure should be within the range of 0.5kg/cm2 to 1.5kg/cm2. The temperature of the return oil should not be more than 50℃. For the commissioning with load for the cone crusher, the temperature should not exceed 60℃.
Fifth, the running time for the normal operation should not be less than 2 hours. Generally, the time should achieve the indentifying requirements.
Sixth, the hydraulic adjustment device of the hydraulic device should be locked according to the operation program. Adjust the using requirements of the discharging port.
The commissioning with load for the cone crusher has the following requirements.
First, check the load for the commissioning with load for the cone crusher.
Second, during the load-commissioning for the cone crusher, make the cone crusher run continuously. The feeding amount should increase gradually.
Third, the installation for the feeding device should be correct. The ore should be distributed into the crushing cavity evenly.
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Technology Innovation of Crusher Promotes Development

Today, with the booming and growing momentum of development in western China, the mining machinery is ushering a new time with challenge and opportunity. The mining machinery produced by Henan Hongxing Mining Machinery is the equipment with very high technological content and high integration. The crusher machine belongs to the large-scale mechanical beneficiation equipment. This kind of equipment has very high requirements on the quality. The quality of the mining machinery is related to the construction of the entire project. When the project builders or investors choose the crusher machine, the inspection of the quality of the products is very important and necessary. Only the qualified products can be put into the production. You can not just consider the price factor.
The mining machinery manufacturing industry should continue to integrate into the human outstanding achievements in various fields. Faced with the major demand for national economic construction, the mining machinery enterprises should achieve the sustainable development with the guidance of the scientific concept of development. The development and research of the new products continuously integrate with the achievements of human in various fields. With the advance of the materials science, manufacturing industry, information technology and the advancement in computer technology, every new round of the product has new injection of the technology. The replacement cycle of the spare parts become shorter and shorter. The updating of the new equipments becomes faster and faster. There is no mature experience to be learned for the development and research of the large-scale mining machinery. Therefore, we require the help of a multi-disciplinary technical integration to improve the design efficiency and quality, and enhance the capability of independent innovation and market competitiveness.
The gravel materials needed in the construction of high-speed rail need the mining machinery, which needs the majority of companies to do a good job for the self construction and development to produce the products and equipment which can meet the requirements and try to find a better market. The mining machinery enterprises should grasp the opportunities of the domestic market. In addition, they should greatly develop the foreign market.
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Railway Infrastructure Promotes Development of Machinery

Recently, China's railway construction scale is also growing. It is reported that the railway infrastructure investment was 69.77 billion yuan in October this year, which has increased of 240.8% compared with 20.47 billion yuan in the same period last year. The sequential growth is 8.5%.During the second fifth year, the scale of the commissioning of the new line has reached 30,000 kilometers and the total mileage of the national railway operation is also extended to 120,000 km. The railway construction situation is very is excellent, which will strongly impetus the development of the transportation, crusher machine, sand making industry and other industries.
Since the high-speed railway construction belongs to the areas of high-rise buildings in China, the requirements on the quality of the sand and gravel aggregates are very stringent. In addition, the market opportunities brought about by the construction of high-speed rail will propose new requirements for the production and performance of the crusher machine and other stone processing equipments. The quality of the crusher will directly affect the quality of the sand and gravel aggregates. As the raw material for cement, concrete and other building materials, the sand and gravel aggregate will have an important impact on the quality and the service of the railway. The mining machinery industry will also subject to a new round of challenges and elimination in the acceleration process of the railway construction.
As a result, the domestic advanced mining machinery enterprise Henan Hongxing Mining Machinery actively introduces the international advanced production technology and combines with the independent research and development to enhance the performance and production of the crusher equipment. The new type of crusher machine and sand making machine researched and developed by Henan Hongxing Mining Machinery are warmly respected in the cement, construction, building materials and other fields. In addition, the production line configured by Henan Hongxing Mining Machinery has also become the new darling of the high-speed railway construction.
According to relevant sources, the scale of investment in fixed assets of the railway in 2013 is expected to reach 6500 to 7000 million yuan, which increases of 5% to 10% compared with that in 2012. These positive signals heralded that the railway construction in China is gradually warming up. The mining machinery industry should seize the opportunity to increase the of sand production technology and equipment innovation and strengthen exchanges and cooperation with the international advanced enterprises.
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Four Hypotheses for Structure Optimization of Ball Mill

For the grinding efficiency of the ball mill">ball mill and the simulation and optimization for the representation model between the parameters of the mechanism o f the milling machine, the simplified three-dimensional modeling of the mechanism of the milling machine is mainly composed by the large pulley, bearings, connecting rods, rocker and the tray. The grinding tube is fixed on the tray. The eccentric distance between the bearing and the pulley is 60mm. The initial length of the link is 180mm and the initial length of the rocking bar is 120mm. The length of the hinged four-bar mechanism frame is 200mm.
The motor drives the pulley and drives the rotation of the pallet. The action of the hinged four-bar mechanism frame causes the additional swing of the tray. Therefore, the grinding cylinder on the tray does the planetary motion with the tray. The eccentric force produced by the rotation of the rolling cylinder and the friction force between the rolling cylinder and the cylinder wall causes the inter impact and friction between the milling ball and the materials in the cylinder so that the materials can be crushed.
In order to simplify the analysis process, the experts of Henan Hongxing Mining Machinery have put forward four hypotheses for the structural optimization for the ball mill.
First, the milling body is in the mill barrel and it does the circular motion according to the location layer by layer.
Second, it is the projectile motion after the milling body break away from the cylinder wall.
Third, the sliding between the milling body and the cylinder wall is very small, which can be negligible in the calculation process.
Forth, the impact of the materials in the cylinder body on the motion of the milling body can be negligible.
Most of the grinding impact of the ball mill on the materials is derived from the impact energy of the milling body. However, the grinding rate and the impact energy of the ball mill show the line relationship with any standard and size. In addition, the slope of the line is the grinding rate of the materials.
Original link: http://www.crusher-export.com/grinder/n147.htm
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Magnetic System Model for Separator Magnetic Separator

The magnetic system physical model of the experimental prototype of new generation of the large particles magnetic separator produced by Henan Hongxing Mining Machinery is composed of the yoke and permanent magnet. The model ignores the effect of axial edge effect of the magnetic system and it is simplified to the ZD model. There are friction wheel devices at the external part of the drive. Since the leakage of the electric flux density of the magnetic system at the external part of the magnetic roll is small, the yoke section of the magnetic system has been simplified. In the physical model of the magnetic system, the impact of the magnetic ore powder in the cylinder on the magnetic field has not been considered. The magnetic reel is made of the high permeability soft magnetic materials. The permanent magnet is made of the high-performance rare earth permanent magnet material. The demagnetizing curve of the rare earth permanent magnet almost has the linear feature. In addition, the slope of the demagnetizing curve is almost equal to the permeability of the vacuum magnetic one. In the analysis process, the demagnetizing curve of the materials can be linear processed. In the following part, the experts of Henan Hongxing Mining Machinery will introduce the establishment process of the magnetic system model for the large particle magnetic separator.
The first is the selection for the calculation of the type and the coordinate system. This permanent magnet system has symmetry which can simplify the three-dimensional problem to the problem of two-dimensional plane. This system contains the yoke, permanent magnets and the air gap, which belongs to the static magnetic field. Mganeotsattci Solver is used for the coordinate system.
The second is modeling. Since the external friction wheel of the yoke is simplified, there is no this structure in the modeling process. 
The third is the property of the specified materials. The permanent magnet is made of the high-performance seven permanent magnetic materials. Since the magnetizing direction and other parameters are calculated, the parameters of the permanent magnet can be determined.
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Vibration Analysis of the Inertia Cone Crusher

Since the inertial cone crusher has very good structural characteristics and dynamics, the inertial cone crusher can be used to meet different process requirements in the processing the ore with different nature. The analysis of the nonlinear vibration condition can deeply reveal the excellent characteristics in order to better guide the production.
The inertia cone crusher is composed of three parts, namely the power parts, transmission parts, and the work part. The vibration condition of inertial cone crusher in the work process is very complex. The vibration condition includes the high frequency slight vibration and the circle vibration in the plane. In the work process, the materials to be crushed suffer from the crushing force in the crushing cavity. In addition, the material vibration is a very important part of the vibration system. The vibration of the actual inertial cone crusher is a kind of two-degree freedom nonlinear vibration.
The first is the hysteresis force analysis. In the motion cycle of the organism of the inertia cone crusher, the hysteresis force is symmetrical, which is a piecewise linear odd function and is symmetrical about the origin point. When the gap of the moving cone of the cone crusher is larger than the loose degree of the materials in the crushing cavity, the moving cone begins to load, the accumulation of stress and strain increases in the material layer, which is in the elastic deformation stage. When the relative displacement of the moving cone reaches the limits of displacement, the crusher machine is in forward unloaded state. The hysteresis force will finally be reduced to zero. Since the working process of the crusher machine is periodic and symmetrical, the motion situation is similar to the previous analysis.
The second is the hysteresis force equation. Since the hysteretic force is symmetrical about the origin of coordinates, you can use the displacement and velocity of the moving cone establish the hysteretic force equation. From the calculation of the equation, we can know the actual vibration frequency of the crusher not only relates to the frequency of the vibration exciter, the quality of the machine and the elastic stiffness of the rubber spring, but also relates to the parameters of the materials.
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Force Analysis for Spindle of the Gyratory Crusher

In order to guarantee the service life and working capacity of the spindle of the gyratory crusher, we need to analyze the force situation of the gyratory crusher machine in order to improve the crusher machine to meet the needs of production. The experts of Henan Hongxing Mining Machinery have analyzed the force situation for the spindle of the crusher machine and have provided effective theoretical basis for the improvement of the performance of the gyratory crusher machine. In the following part, we will introduce the three steps for the analysis for the force situation of the spindle, namely the calculation for the oil pressure of the hydraulic cylinder, the strength calculation for the spindle and the calculation for the rack.
First, in terms of the calculation for the oil pressure of the hydraulic cylinder, the gyratory crusher only suffers from the self gravity of the moving cone in the empty load state. Under the normal working conditions, the oil pressure of the hydraulic cylinder can be obtained through the vertical separation for the crushing force of the oil pressure of the hydraulic cylinder and the self gravity of the moving cone. According to the oil pressure, the decreased distance and the volume of the accumulator, the downtime pressure of the contact manometer can be obtained.
Second, in terms of the calculation for the strength of the spindle, the spindle is a very important component for the gyrator crusher machine. Therefore, the spindle must have the sufficient strength and rigidity to ensure the normal operation of the crusher machine. The actual production experience has told us that the breakage of the main shaft mainly occurs at the tool withdrawal groove of the upper screw thread, the bottom between the lower part and the cone body and the interface between two different diameters. Therefore, the strength of the spindle can be calculated according to the working conditions and the iron conditions.
Third, for the calculation of the frame, according to the analysis for the strength and the stiffness for the frame, the stress generated at the intersection between the surface of the vertical ribs and the bottom flange is very large.
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Jaw Crusher Can Be Used to Crush Various Materials

In the ore operations, one of the important uses of the crushing operation of the jaw crusher is to prepare the original ore to the useful components. At this time, the materials to be crushed are different from the single and uniform materials and different from the mixing materials
Generally, the very coarse ore particles are equivalent to a kind of homogeneous material, which contain the useful mineral inclusions occurs in the gangue mineral matrix. In mining, a jaw crusher is used to reduce large rocks into smaller pieces of rock, like gravel. A jaw crusher is usually the first part of a system of several crushing machines that break down the material into the desired shape and size. Large rocks are inserted into the mouth of the crushing chamber, where hydraulic pressure is applied to the material to crush it into a roughly uniform smaller size. There are essentially two types of jaw crushers: overhead eccentric and double-toggle. Each type of jaw crusher uses a different method to power the crushing chamber of the jaw crushing unit. The particularly fine ore particles close to a kind of free useful minerals with a variety of free gangue mineral mixture. The adjusting device of Hongxing jaw crusher can be used to adjust the size of the discharge gate, and there are two kinds of adjusting mechanism forms which can make flexible adjustment and achieve the promise adjustment. Compared with other jaw crushers, our machine has a longer crushing chamber and smaller locking angles. This design can effectively increase crushing strength of our jaw crusher.
For the materials with intermediate particles, if the particle size of the particles becomes small, the crushing process may separate the useful minerals from the gangue. As the leader of Mining Machinery industry, Henan Hongxing Mining Machinery has produced many types of jaw crusher, which can be used to crush various materials. The jaw crushers produced by Henan Hongxing Mining Machinery have exported to a lot of countries and they are favored by a lot of customers.
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How to Deal with Temperature Impact on Crusher Machine

The crusher machine is commonly used in the mining, construction, cement, railway and other fields. It is also often used in the plateau section or the open-pit mining in fall and winter. The crusher machine is greatly affected by the local climate, geological conditions and freezing layer. Cold climate and low temperature weather tend to reduce the service life of the crusher, which will bring serious loss to the users. For example, in the major mining areas in northern Inner Mongolia, the crusher machine is often troubled by the perennially seasonal frozen layer blasting and excavation.
In the blasting process, the stone which is difficult to be crushed is very hard like the iron in the cold winter. The blasting effect and bucketing efficiency will be seriously affected and the security risk also exists in the bucketing and transport process. In addition, huge impact will be brought to the crushing system when the large piece of stone enter the ore beneficiation process, which will cause clogging for the crushing station and increase the failure rate of the crusher machine. Seriously, production halts may occur.
The above description has told us the low temperature seriously affects the service life of the crushing machinery and equipment. Therefore, special process for the crusher machine is very necessary. Henan Hongxing Mining Machinery has done a lot of researches on the control of the harm to the crusher machine according to specific using environment. The crusher machine produced by Henan Hongxing Mining Machinery has been greatly improved to adapt to the production in the low-temperature environment.
In addition, the temperature of the individual components has the normal range. Particularly in the using process, the crusher machine should not work with overload in the low temperature to ensure the normal operation of the low speed pre-temperature stage. The machine can be started when it has reached the predetermined temperature. The machine should not operate in the high temperature. We should frequently check the value in the various thermometers. If there is problem, you should immediately stop the machine and exclude the faults.

Original link: http://www.mine-crusher.com/news_143.htm

Air Distribution Method for the Rotary Kiln

With the burnout effect of the circulating fluidized bed in the incineration system with pyrolysis gas and solid product, the overall temperature of the circulating fluidized bed is between 850℃ to 1100 ℃. The classification of the air supply and the oxygen-enriched combustion make the reaction become strong. After the solid materials enter the circulating fluidized bed, the materials run in the fluidization shape. The is residence time is more than 40 minutes to 60 minutes, which can ensure that the solid material can burn out in the rotary kiln. The hot burning lapse rate of the ash discharged from the rotary kiln is less than 2%, which is far below the incineration standard. The combustible gas after pyrolysis in the rotary kiln can burn rapidly after it enter the circulating fluidized bed with the high turbulence fed by the classifier and high-oxygen conditions. The residence time of the flue gas in the circulating fluidized bed is more than 3 seconds to 4 seconds, which can make the available natural gas fully burn and effectively inhibit the generation of the harmful substances.
In the circulating fluidized bed of the rotary kiln, the limestone is added as the bed material. The calcium oxide produced by the limestone with the pyrolysis under the high temperature can react with the hydrogen chloride and other acid gas produced in the incineration of the medical wastes. In this way, the emission concentration of the hydrogen chloride can be reduced, which can avoid the corrosion problems of the tail equipment. The high temperature flue gas produced by the circulating fluidized bed is cooled to 500℃ through the air preheater and the pyrolysis wind and stream wind are heated to more than 500℃. The high temperature combustion air can improve the combustion temperature level in the incineration chamber so that the medical wastes can keep burning without the auxiliary of the fuel. The fuel gas from the high-temperature air preheater is cooled to less than 200℃ through the fuel cold device.

Replacement Procedure of Thrust Board of Jaw Crusher

Henan Hongxing Mining Machinery is a well-know brand in the mining machinery manufacturing industry, which is a share holding system integrated with the development, research, production and the sales. How to replace the thrust spring and the thrust board at the bottom of the jaw crusher when they are damaged? The experts of Henan Hongxing Mining Machinery will detailed introduce the replacement procedure of the thrust board of the jaw crusher in this article.
When the thrust board of the crusher is seriously worn or the front thrust board is broken, you must remove the ore stones in the crushing cavity and remove the worn or broken thrust board. In addition, you should check if the toggle plate on the moving jaw and the connecting rod are damaged. You should pull the moving jaw near the fixed jaw. Replace the old thrust board with a new thrust plate after lubricate with dry oil on the working face of the toggle plate so that the new thrust plate can slowly contact with the working face of the toggle plate. You should tense the level rod so that the moving jaw can nip the thrust plate.  Tighten the security cover and connect the lubrication system, and then adjust the size of the discharge mouth.
The most frequent repair project for the jaw crusher is to replace the thrust plate. For the whole crusher machine, you should first disassemble the thrust plate. You should tighten the baffle bolt and cut off the dry oil lubricating pipe to hang the thrust plate on the hook of the crane or other lifting equipments. Then you can loose one end of the spring of the waling stripe. Pull the moving jaw to the direction of the fixed jaw and remove the thrust plate. If you need to remove the back thrust board, you should open the connecting rod, front thrust board and the moving jaw together. After disassembling the thrust, you should cut off the dilute lubricating oil tubing and the cooling water pipe. There should be a frame at the lower part of the connecting rod. Then you can disassemble the rod cap in order to lift out rod.
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Perfect Brand and Service Boost Development of Crusher

With the increasingly rapid pace of economic development in China, the change of the development situation and the acceleration of the pace of the infrastructure construction, the technical level of the domestic mining machinery is gradually enhanced and the mining machinery has become an important support of the national industrial manufacturing industry. The performance, quality and the technical level of the crusher machine have definitely improved. In the homogeneity times, the perfect brand and after-sales service have become a key role in the market competition.
Henan Hongxing Mining Machinery is a large professional enterprise for the development, production, sale and after-sales service. Henan Hongxing Mining Machinery has decades’ production history with excellent quality brand. The high-quality crusher machine produced by Henan Hongxing Mining Machinery has been favored by a lot of customers at home and abroad. Henan Hongxing Mining Machinery has produced various types of crusher machines, which has brought direct economic benefits and has brought praise for the customers.
Today, after-sales service has become the most important lesson in marketing, which has become the advantage for the business and customers. Good after-sales service is a main way to enhance customer satisfaction and loyalty and the best promotion for the establishment and the important approach for the next sale. Therefore, the increasingly fierce market competition in the crusher industry can gradually transmit the competition between the service and the brand. The perfect after-sales service system and the influence of world brand will drive the bright future in the mining machinery industry.
All the well-known large and small enterprises depend on the high quality, high-end brand and the comprehensive service support. The development of the crusher industries also need to focus on the brand building and the perfect service system, which can improve the satisfaction of the customers. The perfect brand effect of the crusher machine can potentially establish a kind of propaganda dissemination, significantly reduce costs and increase the market share and brand reputation to promote the crusher industry to the international stage.
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How to Reduce Attrition of the Sand Making Machine

The sand making machine is a common casting machinery and equipment. Since the sand making machine has large crushing ratio and high-speed rotation, the attrition faults of the wear parts is frequent, which will cause frequent repair of the machine. Among the various wear pars of the sand making machine, the failure time for the attrition of the plate hammer is the shortest and the attrition cost is the highest. Therefore, reducing the consumption of the plate hammer is the key issue to solve the attrition of the plate hammer.
The factors that affect the consumption of the plate hammer of the sand making machine are the followings.
The first is the line speed. The line speed is the parameter which has the greatest impact on the attrition of the plate hammer of the sand making machine, because the size of the line speed directly affects the size of the impact energy and the size of the ratio. The line speed also plays a decisive role in the particle size of the product. Too great line speed will cause that the material can not enter the impact area so that there is severe attrition between the materials and the plate hammer.
The second is the processing capacity and the discharge gap. When the processing power of the sand making machine increases, the product size will be thicker and the crushing ratio will become small. Then the unit attrition consumption of the board hammer will also reduce. Similarly, changing the size of the discharge gap can also change the particle size of the products to some extent.
The third is the nature of the materials to be broken. The effect of the materials to be crushed on the sand making machine includes the nature of the materials, the feeding granularity and the moisture content of the materials.
How to reduce the attrition of the plate hammer of the sand making machine?
First, we should reasonably choose the parameters. Choosing a reasonable line speed is very important. To this end, we should reduce the line speed of rotation of the rotor as much as possible.
Second, try to improve the wear resistance of the material of the plate hammer. The data has indicated that the chromium-molybdenum alloy steel, high chromium cast iron can be used as perfect materials for casting the plate hammer.
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Maintenance Knowledge about the Grinding Machine

There are a lot of grinding machine, such as the ball mill and Raymond mill. The grinding machine is widely used for grinding materials in various industries. As a result, grasping certain maintenance knowledge about the grinding machine is very necessary.
First, check if the adjustment of the roller, bearings, belts, gears and other parts is correct to prevent the abnormal vibration or noise.
Second, keep the load on the grinding roller so that the flow rate is uniform. Check if distribution of the flow of the whole grinding roller and the grinding are uniform. Maintain the adjustment ability of the grinding machine. The scraper or brush can be used to clean the grinding roller.
Third, check the work situation of the roller device. Pay special attention to the fastening situation of the connecting bolts to prevent the accident caused by the looseness of the screws and falling off of the grinding roll.
Forth, check the temperature of the surface of the grinding roller and the temperature of the motor. The rising temperature of the operation of the transmission system may lead to the heating of the belt and the rising temperature of the oil.
Fifth, during the feeding process, the diameter of the hard materials should be preferably less than 15 mm. The diameter of the soft material diameter can be 20 mm. The bulk materials are not allowed to be added to the machine. The feeding should be uniform. Too many materials will block the air flue, reduce the yield and burn out the motor. Too few materials will also affect the yield.
Sixth, the metal blocks are not allowed to enter the machine. Otherwise, the grinding roller and grinding ring even the center hanger will be damaged.
Seventh, the air flow control valve of the mill on the inlet air pipe of the fan is generally opened to the maximum position. According to the fineness and the production requirements, you can do appropriate adjustments.
Eighth, according to the difference of the size, hardness, moisture content, specific gravity and the processing of the materials to be grinded, you can adjust the upper analyzer.
Ninth, if the surface of the grinding roller is uneven, you should timely replace the roller.

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Mobile Crusher Plant Helps Disposal of Construction Waste

The majority of construction waste is generated in the process of housing reconstruction, repair, decoration or road expansion. Large amount of the waste concrete, bricks, stone, abandoned reinforcing steel bars, glass, muck and wood in the construction waste. The construction waste is hard for disposal like the garbage in daily life. However, long-term placement of stuffing will not only occupy the land resources and affect convenient transportation, but also distribute the unpleasant smell and cause pollution of the environment. Therefore, scientific solution for the disposal of the construction waste needs professional processing equipment, which can make the waste resources become the renewable resources to achieve the low-carbon and environmental protection changes for the construction waste.
With the continuous progress of science and technology, China's construction waste treatment technology has been successfully applied at home and abroad. As a professional and excellent construction waste disposal equipment manufacturers, Henan Hongxing Mining Machinery has comprehensively analyzed the construction waste. At present, the mobile crusher plant" href="http://www.crusher-export.com/crusher/n123.htm">mobile crusher plant produced by Henan Hongxing Mining Machinery is specialized for the disposal of the construction waste. The new generation of the mobile crusher plant sets the feeding process, crushing process and the transport process as a whole, which is widely used for the crushing and screening operations for the disposal of the mining wastes in the engineering construction and mining industry. The mobile crusher plant can remove the pollution caused by the construction waste. In addition, the construction waste becomes valuable, which promotes the construction waste disposal to go towards a sustainable development road.
The mobile crusher plant can help the recycling of the construction wastes and make them become valuable to benefit humans. For example, after brick, stone, concrete and other waste are crushed, they can be used as the sand for the masonry of the sand pulp and plastering mortar. The waste concrete blocks after fine crushing can be mixed with the standard sand as the sand slurry. The recycling of the construction waste can save the energy and achieve the clean production and closed circular economy industrial chain to protect human environment. More importantly, the construction waste disposal industry as an emerging industry can make the enterprises achieve economic and social benefits to create the greatest wealth in the not optimistic economic situation.
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Ways to Reduce Attrition of Grate of the Hammer Crusher

The hammer crusher generates high-speed rotation with the drive of the motor through the rotor to drive the rotation of the hammerhead fixed on the rotor. Then the hammerhead repeatedly strikes the materials falling down continuously and it gradually crushes the materials with different weight to the required particle size. At last, the grate installed at the discharging port is used for coarse screening of the materials. The finished products which meet the requirements can pass the grate excluding devices, while the materials that do not meet the requirements will enter the secondary crushing process.
In the working process of the Hammer crusher, the attrition of the grate and the supporting frame of the grate are also frequently beside the attrition of the rotor and the hammerhead. Therefore, in order to extend the service life of the equipment, we should improve the attrition degree of the grate and reduce the replacement times. For this situation, the professional manufacturer Henan Hongxing Mining Machinery has put forward the improvement measures for the grate of the hammer crusher after careful study to ensure the normal use and maintenance of the large amount of the users.
The first problem considered is the design of the hammer crusher. We can change the groove cage bar supporting bracket in the equipment design into the design without groove cage bar supporting bracket in the premise that the work performance of the crusher should not be affected. In this way, the discharging length of the materials can be increase effectively. In addition, it can play a good role in terms of the fixity of the grate bars.
Second, we can change the short grate bars into the long grate bars with a convex edge in the middle. At the same time, we can change the small and short curved flat lining installed on both sides of the rack of the bottom of the equipment into a large curved board. The outer arc should be widened. After that, weld the screw holes which are not in use to prevent the scatter of the dust. The improvement of the grate of the hammer crusher can effectively reduce the attrition of the grate, which can save the maintenance costs.
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The Maintenance Standards for Roller Crusher

In terms of the commissioning of the roller crusher, you should pay attention to the following matters before the commissioning. First, you should check if all fastening parts are fastened. Second, check if the gap between the rollers has adjusted to the desired size. Third, check if the oil of the various lubricating parts is enough. Forth, check if there are metal objects or other debris falling into the spring. Fifth, check if there are obstructions around the machine to interfere the normal operation of the equipment.
For the empty load test of the roller crusher, the unloaded load test should be not less than two hours. The temperature of the bearing must not exceed 60 °C. The coupling should rotate flexibly. The temperature of the rolling bearing should not exceed 70 °C.  The sealing should be good. The equipment should run smoothly and there should be no obvious sound of the roll gaps.
For the load test of the roller crusher, you can start the load test of the roller crusher if the roller crusher is normal after the empty load test. The load test should not be less than four hours. The spring force should be uniform. There should be no strong vibration for the machine body.  The lubrication should meet the requirements. The current of the motor should not exceed the specified value.
The maintenance quality standards of the roller crusher should meet the followings.
First, the lognitudinal level degree should not exceed 0.2/1000.
Second, when you assemble the sliding bearing, you should carry out the scraping for the bearing and the spherical surface to make it meet the following requirements. The contact cambered surface between the bearing bush and journal should be 1OO to120 degrees. The tip clearance between the bearing bush and the journal should be 0.10% to 0.15% of the diameter of the journal. The side gap of on each side should be 50% to 70% of the tip clearance. The contact area of the spherical bush should not be less than 60% of the total area of the spherical area and it should be concentrated in the intermediate position.
Third, when you assemble the rollers, the height difference of the patching of the roll skin should not be more than 3mm.
Forth, the gap between the movable roller and the fixing roller should be 4mm to 10mm. The gap can be adjusted according to production needs.
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Concentrator Need Choose Device According to Particles

The concentrator should use the equipments with different types according to the size of the particles to be separated. In the experiment, the vibrating screen can be used for the separation of particles whose diameter is more than 0.25 cm. The diameter which is lower than the 0.25cm will lead to the low efficiency in the screening process. The separation process is based on the difference of the sedimentation velocity of particles in the fluid, which is often referred to as the grading.
With the action of the gravity, the particles and fluid will suffer from the resistance in the sedimentation. When the resistance is equal to the effective weight of the particles, the particles will reach a maximum speed, namely the limit settling velocity. The limit speed is related to the particle size and concentration. If it is between the limit speed of the isolated particles, the fluid upwardly has a value in speed, which can make the particles divided into the downstream- movement particles and the countercurrent-movement particles. This is the basis for the hydraulic classification of the separated particles.
The experts of Henan Hongxing Mining Machinery have done a lot of experiments on the grading operations by using the gravity as the separating force. In the hydrocyclone operations, the centrifugal force can be used as the separating force.
The whole structure of the rake classifier and the spiral classifier is similar. The upper part of the rake is hung, while the lower part sinks in the pulp. The eccentric movement can be used to make the rake move certain distance from the slant. Then you can lift the rake to return to the original position. With the repetitive motion, the sand will be slowly transported to the discharging end from the slope. The motion mechanism system is composed by the crankshaft, eccentric and connecting rod. The lifting height of the rake is usually 90% to 95% of the height of the rake plate. There are one to six rakes. The standard width of the single rake is 1200mm or 1500mm. 
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Introduction and Role of Jaw Plate of Jaw Crusher

The fixed crushing plate on the front wall of the rack is installed by the countersunk bolts, most of which are vertically positioned. The movable jaw is installed with a tilt angle of 15 ° to 25 °. On the surface of the movable jaw, we can install the moving jaw plate through the countersunk bolts. The jaw plate plays very important role in the jaw crusher machine. It has the following roles.
First, the jaw plate used as the wearing parts which can be replaced can prevent the body of the moving jaw and chassis from wear and tear. Second, the jaw plate can impose force on the materials to crush the materials. Since the jaw plate directly contact with the materials, the jaw plate bears great crushing force. In addition, there is very strong friction between the jaw plate and the materials. As a result, the jaw plate should be made of the materials with high strength and wear-resistant properties. Usually, the jaw plate is made of the high manganese steel containing 12% to 14% manganese. The jaw plate of the small jaw crusher can be casted by the white cast iron.
The surface of the jaw table is often casted in triangle shape or wavy shape and forms a longitudinal groove to help the materials crushed can discharge materials along the longitudinal grooves. During the installation process, the teeth peak of the movable jaw plate should aim at the tooth valley of the fixed jaw plate to impose the extrusion, split and bending action on the materials to increase the crushing effect. The angle of the tooth peak of the jaw plate is generally 900 to 1200 and the ratio between the tooth height and tooth pitch is 1/2 to 1/3.
The attrition of the various parts of the jaw plat is uniform. Usually, the lower part of the jaw plate is worn fast. The attrition of the fixed jaw plate is faster than the attrition of the movable jaw plate. In order to extend the service life of the jaw plate, the jaw plate is often made to vertically symmetrical shape. 

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Running Process Parameters of Rotary Kiln Incinerator

The hazardous waste has some of the characteristics that distinguish it from other wastes. We tend to take advantage of these features to differentiate and distinguish whether a particular non-physical waste belongs to the hazardous waste. The hazardous waste refers to the waste which contains one or more hazardous substances or in which the various components after the interaction can generate the harmful substances. The hazardous waste is toxic, flammable, reactive, infectious, corrosive and radioactive. According to the definition of the hazardous waste, some waste is a hazardous waste as long as it has one or more hazardous characteristics. The so-called hazardous characteristics identification method is to test the nature of the waste according to certain criteria to distinguish whether it is a hazardous waste. There are a wide variety of hazardous characteristics of the hazardous waste, so it is difficult to be measured one by one. From the practical point of view, we can choose the corrosivity, reactivity and the toxicity of the waste for the identification.
The largest danger of the hazardous waste on the environment and human is the impact of the heavy metal on human health and the environment. In addition, the highly toxic organic pollutants namely the dioxin and others generated from the waste with atmosphere in the incineration process also has serious impact on the human and the environment. As a result, we should pay special attention to the two aspects. The running process parameters of the rotary kiln incinerator are the main parameters to directly affect the effects of hazardous waste incineration.
According to the hazardous waste disposal regulations, the physical and chemical characteristics of the different types of hazardous waste have different requirements on the processing parameters on the rotary kiln. When we design the new test station, we should try to improve the temperature of the rotary kiln and increase the cooling rate of the flue gas to effectively control the dioxin.
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Hongxing Sand Maker Is Best Choice among Crushers

According to the analysis of the current building, regardless of road and bridge construction or high-speed and high-speed railway construction, the sand and gravel aggregates are the most basic and the most widely raw materials. The building sand has received special attention because of the draw materials and the properties of the sand and gravel aggregates. How to choose good aggregate production equipment has become a top priority for a lot of investors and the aggregate manufacturers. The modern impact sand making machine can produce the mechanism sand with good quality, which can solute the environment pollution of the sand making industry and can improve the utilization of the resource. In addition, the sand making machine produced by Henan Hongxing Mining Machinery can bring a lot of benefits for the gravel plant with fierce competition to become the comprehensive interest. At abroad, the advanced countries have many years’ for the study on the use of the sand making machine. The processing equipment in our country can basically meet the requirement of the sand making industry. The developing conditions of the sand making machine have been mature and imperative.
The impact sand making machine produced by Henan Hongxing Mining Machinery has been improved from the technology. The inner structure uses the impact hammer and the impact liner. The operation is simple, which can achieve the beat crushing type and the impact crushing type. The grain shape of the sand and aggregate is good. The ores processed by the impact sand making machine has the good grain shape. The sheet rate of the some stones with small bore diameter can be up to 100%. In the traditional production process of the sand and aggregate, the stone are sent to the jaw crusher for primary after they are crushed through blasting. Then you can choose the impact crusher for medium crushing according to the hardness and the yield of the stone. At last, the stone are crushed by the sand making machine to standard particles. The wet-type sand making machine also requires the cleaning process for the sand and aggregates.

3D Design Software Is Used in the Crusher Industry

In this article, the experts of Henan Hongxing Mining Machinery will mainly introduce the train of thought for the computer-aided 3D design of the crusher machine, which is mainly about the key technology and skill of the 3D solid modeling assembly, parametric design, strength, rigidity checking, interference collision check and movement simulation in software environment. In recent years, we can make the structure of every part, the assembly relationship of every layer and the various movement trajectories become clean through the 3D solid model and the operation simulation built in the crusher by the 3D design software. The parameters can be shown visually, which can bring more emotional understanding for the designers. In addition, the parameterization functions of the 3D design software parameters can provide convenience for the improvement and modifications for the future products. It is can be said that the use of computer-aided three-dimensional design for the crusher can achieve the dual purpose of improving the design efficiency and quality.
With China's sustained economic development, China's iron and steel industry and mining has been developing rapidly. The social demand and the production scale of all kinds of metal, non-metallic, chemical, mineral and other materials gradually increase. The amount of the materials which need crushing increases rapidly. Therefore, the demand for the crusher machine becomes larger and larger. The design and development of the crushers with various specifications is closely related with the development of construction, high-grade highways, bridges, dams and mining. The using range of the crusher is increasingly wide. The commonly used crushers include the jaw crusher, cone crusher and so on.
The 3D design software is based on the feature parameterization 3D solid modeling system. Before the start of the design, the software can consider the overall structure and then formulate the good design lines to effectively perform the function of the system, shorten the design cycle and improve design efficiency.
There are two ways by using the 3D software design. The first is the down-top design. This way is relatively traditional. You should design the parts in advance and then insert the parts into an assembly. In this way, the parts are designed independently. The second way is top-down design, which can improve the design efficiency.

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Accessories Quality Is Judging Standard for Crusher

People often put the accessories of crusher machine in a relatively minor position from the literal meaning. Most people think that the accessory of the crusher machine is only the supporting role in the day-to-day production of the crusher. This understanding is one-sided, which confuses the very important position of the accessories of the crusher machine in the crushing production.
For example, if we regard the crusher machine as a person, the accessories of the crusher machine are the parts of the human body. The accessories are small but complete. The importance of the accessories for the crushing machine is obvious. In fact, the crusher accessory is customary title in the mining industry.
In the day-to-day production of the crushing machine, the cost of the crusher parts far higher than the maintenance costs. Let’s take the hammer crusher for an example. The hammerhead of a DPC1412 single-segment hammer crusher needs to use 28 hammerhead of the crusher. Each hammerhead is 52kg and the full set of hammerhead weighs 1456kg. Usually, we should replace the hammerhead every two weeks. The price of the hammerhead of the hammer crusher is calculated through the weight. We can find that the quality and the replacement cycle of the accessories of the hammer crusher has a direct impact on the crushing machine.
However, compared with the host device of the crushing machine, the accessories of the crusher machine develop slightly slow at home, especially the jaw plate of the jaw crusher, the rolling mortar wall of the crusher and the impact plate and the plate hammer of the crushing machine in the small and medium-sized mines. Due to the poor working conditions and the strong abradability of the materials, part of the accessories of the crushing machine may break. In addition, the performance of the products is not stable. The instability of the accessories of the crushing machine may seriously limit the development of the crushing industry. In this case, the upgrade of the accessories of the crushing machine becomes particularly important.
China will continue to increase energy saving, emission reduction, and the use of intelligence and information to improve the reliability of the products as development priorities and the central task of the mining machinery industry in the future. Therefore, the quality of the accessories of the crushing machine becomes the new standards to judge the performance of the crusher machine.
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Four Points to Improve Yield of Sand production Line

In the running process of the sand production line, many companies want to improve the yield of the sand making machine. However, many enterprises have ignored the performance of the sand making machine itself. If we want to get the high yield of the sand making machine, we must have a deep understanding about the factors which affect the production capacity of the sand making machine. Only we improve the affecting factors of the sand making machine can we improve the yield of the sand making machine in the sand production line. The experts of Henan Hongxing Mining Machinery will analyze the four factors that affect the production capacity of the sand making machine in the sand production line. 
First, for the settings of the feeding device of the sand making machine, we must adopt the unified specification process so that the granulocyte level difference can be reduced to minimum extent in the feed. The sand making machine can run with high speed under such conditions. However, with the increase of the inertial force, the operation will reach relatively high fluency.
Second, in the selection process of the cavity shape of the crushing cavity of the sand making machine, we fine that not narrow space can make the materials resident in the warehouse for a long time, which can promote the effective work of the sand making machine. However, we should determine the time by contrasting the time consumption in the whole work flow. Usually in the case of low yield, the experts for the sand making production line remind customers can choose 2 or 3 cavity design. If it is in the case of high yield, it is necessary to use the even chamber even a cavity design to meet the requirements. The regulation is also important for the sand making machine in the sand production line. Reasonable regulation is conducive to the enhancement of the performance.
Third, for the cavity design of the sand making machine, one- cavity structure design is simple. We can control the granular level of the materials very well with this kind of design. Not all the level of granularity control theories can be used in the design of the actual working chamber.
Forth, the sand making machine need the control for the grain type in the high-performance sand making production line. The experts of Henan Hongxing Mining Machinery use the computer control system to appropriately control the grain type of the materials.
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Design of Hydraulic System of Hydraulic Cone Crusher

In order to effectively isolate and screen the useful minerals and ores, the material crushing has become the indispensable process in many industries. Recently, Henan Hongxing Mining Machinery has introduced the foreign advanced technology and developed the hydraulic cone crusher. Compared with the traditional crushers, the hydraulic cone crusher produced by Henan Hongxing Mining Machinery has significant features, which uses the advanced hydraulic technology and can better operate the crushing machine. In the future, it is expected that the hydraulic cone crusher will gradually replace the original spring cone crusher.
In this article, the experts of Henan Hongxing Mining Machinery will introduce the working principles and the project design of the Hydraulic cone crusher. The hydraulic cone crusher controls the actions of three basic circuits. The first action happen s when the fixed cone hydraulic locks the hydraulic cylinder. The second action happens when the hydraulic motor is adjusted between the fixed cone and the movable cone. The third action happens when the hydraulic cylinder is installed between the lock ring and the adjustment ring during the over iron release and cleaning up. It can support the upper locking ting on the adjustment ring to ensure that the fixed cone is in the crushing position of the adjustment ring when the hydraulic cylinder adds pressure in the crushing process. When you adjust the gap between the movable cone and the fixed cone, you should release the pressure of the locking hydraulic cylinder. The motor installed on the adjustment ring starts to run. The wheel gear on the motor makes the driving ring and the adjustment cap engage with each other to rotate fixed cone, which can be adjusted automatically. The over iron and the rack of the host are connected with each other and they are fixed together with the adjustment ring so that the adjustment ring and the rack of the host are stable. If the overload appears, the crushing equipment returns to normal situation. In order to clean the crushing machine, you need to separate the adjustment ring from the rack of the host. 

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Functions of the Rotary Kiln Cooling Machine

In the actual production, the high-temperature materials produced by the rotary kiln must be cooled to certain degree by the cooling machine to be transported. After the materials are cooled by the cooling machine, the materials can be elevated to the warehouse storage by the bucket elevator. The cooling machine can also recovery large amount of heat carried by the high-temperature materials, which can preheat the combustion air into the kiln to 3000℃ to 5000℃ in order to strengthen the calcined and reduce the energy consumption.
The cooling machine can be divided into the single cylinder and multi-cylinder. The single-cylinder cooling machine is similar as the rotary kiln. The single-cylinder cooling machine has the simplified body, rolling ring, roller, supporting device, the ring gear transmission, nose and tail. There is feeding device and the material cover according to the need. The difference is that there is not liner in the simplified body. You can install the heat exchanger means and the material plate in order to facilitate the heat exchange of the passing airflow. The cylinder of the multi-cylinder cooling machine is the same as the single-cylinder cooling machine. Every barrel is fastened by the two supporting points and the barrel body of the kiln. For comprehensive consideration, the kiln end is easily to be worn by the materials. Therefore, it should be made of the high alumina bricks with good masonry strength. Impacted by the mechanical transmission and high temperature, the middle segment should be made of the magnesium aluminum brick or high alumina bricks. The head of the kiln should be made of the clay brick, which is cheap. The ideal kiln liner is generally composed with two layers of refractory. One layer uses the lightweight insulation material to laid on the inner wall of the tube, which can also be poured by the unshaped insulation material. For the other layer, the bricks and wear-resistant materials can be used as the liner to directly contact with the flame. This kind of double brick is economical and reasonable.

The Structure of Hongxing Mechanical Grading Machine

The mechanical weight classifier can be divided into the leverage scale classifier and the spring scale classifier. The leverage scale classifier is mainly composed of the moving scale with circle movement and the fixed scale fixed on the rack of the classifier. The materials are loaded on the plate. When the moving scale enters the stoichiometric point, the measurement hook of the moving scale enters the measurement slide from the control slide. When the upward force of the measurement hood is larger than the downward force of the measurement slide, the measurement slide is raised. When the scale reaches the falling area, the plate will incline and the materials are poured. If the weight of the materials is smaller than the setting weight of the measurement value, the moving scale will continuously move forward. After going through the separation needle, the moving scale enters the control slide to move to the next measurement point.
The spring scale classifier is to combine the rotating screen with the plansifter according to the order of the increase of the classifying diameter. The gap between the two belt conveyor gradually increases. This precision of this kind of device is relatively low. However, the structure is simple and it is easy to adjust the machine. The operating rate is high and it is suitable for the large-scale classifying operations. 
The mechanical grading machine has simple structure and less failure. It is easy to increase the productivity. However, the metal is pourable in the transportation process. Sometimes, it is difficult to sort the materials according to the diameter of the materials. Therefore, for the irregularly shaped materials, the errors are easily to be produced. The mechanical grading machine is suitable for the classification of the metals whose size requirements are imprecise. The mechanical grading machine produced by Henan Hongxing Mining Machinery has stable working performance and there is no vibration. This kind of classifier can overcome the large vibrating work and the short service life of the plansifter. It will be your best choice for the classification work.
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Features of Impact Crusher Used in Stone Production Line

In recent years, with the rapid development of China's high-speed rail, roads, housing and other infrastructure constructions, the artificial mechanism aggregates production gets a wide range of application. The aggregate production line which is composed by the crusher, sand making machine and conveyor belt can be seen everywhere. The mainstream model of the dry artificial sand and wet sand production line of the artificial sand process are gradually mixing together along with the comprehensive consideration of the factors such as environment and skills. The domestic artificial aggregate production is confronted with the salutatory development opportunities.
When we choose the crushing machine, we should consider many factors. We should first examine the manufacturers. The check content includes the strength of manufacturers, reputation and size. In addition, we should also pay much attention to the tonnage and the crushing amount of the crushers. You had better look at the specific technical parameters. Second, we should understand the matters needing attention, product quality, technical level and the degree of maturity. Third, we should inspect the production site of the manufacturers. The users’ scene is the most convincing. At last, you should shop around, carefully inspect and carefully choose the products. The price of a crushing machine is high. You should have a deep understanding about the manufacturers which produce the crushing machines. 
After the optimized design of the deep cavity-type rotor, the passing rate of the materials can be raised about 30%. The circle protection board with local attrition can be reused by the adjustment of the turn. The utilization of the materials can be improved. The service life of the impact crusher can be increased by more than 48%. The hammerhead with combined type can reduce the using costs, because you only need to replace the hammerhead part of the crusher. In addition, there is an additional hammerhead which can effectively prevent the damage to the stand plate after the attrition of the main hammer.  The core wear-resistant material is made by the highly wear-resistant and high-temperature materials used in the U.S. industry.  

Technical Performance of the Dual Rotor Impact Crusher

In order to prevent the shutdown of the motor because of the increase of the moment of inertia of rotation of the rotor, the dual rotor impact crusher produced by Henan Hongxing Mining Machinery uses the fluid coupling. In order to give full play to the crushing action of the two rotors, the crusher uses the dividing cavity crushing principles. In this way, the two rotors are responsible for certain crushing action. In order to improve the crushing effect, the two rotors have a height difference of 265mm so that the second rotor is force the feed to obtain the possibility to increase the line speed of the second rotor to improve the crushing efficiency.
For the counter plate body of the first and second counter plate, one end is jointed on the two side walls of the rack. The other end is hanged on the upper wall and the back wall of the rack by the special screw and the adjustment spring member. The impact plate of the sub-crushing chamber is connected by the connecting rod and locking spring installed on the upper rack by the hanging square cross-section axis. They are hanged between the two rotors to divide the upper rack into two crushing chamber. In the lower part of the impact plate of the sub crushing chamber and the second impact plate, there are grid plates with the different size of the gap so that the materials which have reach the particle size requirements can be timely discharged. This way can prevent the reduction of the working efficiency. Twisting and locking the spring nut can adjust the compressive force of the locking spring of the impact plate of the sub crushing chamber. At this time, you can change the gap between the lower part of the impact plate of the sub crushing chamber and the plate hammer of the first rotor to control the particle size of the materials in the second crushing cavity. Positioning nut twist can achieve the same purpose, but you must twist the nut of the locking spring to adjust the pre-pressure of the spring.

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Introduction to Kinematic Analysis about Impact Crusher

The centerline and the centerline of the moving cone of the impact crusher intersect at a fixed point and they form an angle. Due to the characteristics of the structure, the movement of the moving cone is bounded by the eccentric sleeve and it has to do cycle exercise. In the mechanics, the materials do the space rotation around the fixed point. From the production practice, we know that the moving cone does the clockwise or counterclockwise cranking motion around the center line of the machine with the eccentric hole. In addition, it also does the rotation in the turning direction around the instantaneous axis with the eccentric sleeve.
When the impact crusher crushes the materials, the movable cone does the clockwise or counterclockwise cranking motion around the center line of the machine with the eccentric hole of the eccentric sleeve. At the same time, it also rolls along the materials layer of the crushing cavity. Why the state of this movement will appear? The excerpts of Henan Hongxing Mining Machinery will analyze the reasons for you in the following paragraph.
For the kinematics analysis of the impact breaker, we can know that both load operation and the no-load operation are small. Therefore, in the calculation of kinetic analysis, the operation can be considered as 0. The crushing cone of the impact crusher and the center of mass of the eccentric sleeve are not on their rotation center line. As a result, the inertial force and the fixed point are inevitably produced in the operation. The fixed point and the inertial force may increase angle. Since the angle is limited by the structure of the eccentric sleeve, it will not be changed. Therefore, the machine will produce a kind of harmful vibration if the rack sleeve and the spherical bearing shell produces a kind of action force. The eccentric sleeve is prone to be deviated, which will affect the normal operation of the machine. In order to eliminate or reduce the harmful vibration caused by this inertia force and moment of inertia and ensure the normal operation of the machine, the key is to calculate out the size of the inertial force and moment of the inertia force of the eccentric sleeve of the crushing cone.
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