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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