Hongxing Strives to Produce Crushers with Different Types

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

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

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Improvements of the Positioning Means of Cone Crusher

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

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Hongxing Sand Production Line Strives to Reduce Costs

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

The Structure Type of Hongxing Impact Crusher

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

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

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

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

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

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

The production process of stone production line has the both the broad meaning and the narrow meaning. The generalized production process refers to the whole process from the preparation to start the production of some product to the finish of the production. The narrow production process refers the process in which the process begins when the materials are put into production. The stone production line is the human, financial, and material consumption process. In addition, the stone production process is also the process of creating new value and use value of material wealth.
Rationally organizing the production process is one of the important tasks of the management of the enterprises. Only the rational organization of the production process can make the investment in resources be fully utilized to ensure the timely and order production with quality and quantity. The basic requirements of the rational organization of the production process include the following points.
The first point is the continuity. Continuity means that the various stages and various working procedures of the products in the production process are closely co-ordinated. The unreasonable interruptions are not allowed. The process should be as short as possible. It comprises the continuity of time and the continuity of space. The continuity of time refers to the movement in various links of the production process of the labor objects. The process is in a continuous state from beginning to the end. There should be no or little unnecessary pauses and waiting phenomenon. The spatial continuity means that all aspects of the production process in the spatial arrangement in the process is reasonable and compact so that the process of the processing object becomes as short as possible. There is no circuitous round-trip phenomenon.
The second is the coordination. The coordination is also called the proportionality. The coordination means that the various phrases and the various working procedure of the products in the production process should maintain certain proportional relationship.
The third is the balance. The balance is also known as the rhythmicity. The  rhythmicity refers to the process in which the various stages and various working procedures can produce and hand over the same amount of products from the beginning to the end.
The forth is the parallelity. The parallelity means that the various stages of the  production process and the production activities of various working procedures should be carried out as horizontally as posibble  in order to shorten the time of the production process and to speed up the production of the product.
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Development and Research Significance of Rotary Kiln

The structural strength of the rotary kiln is related to the manufacturing, installation, operation, the quality of the refractory bricks and other factors. In addition, the cost of manufacture of the rotary kiln is very high, so the many uses require that the rotary kiln should have long service life. The structure design of the rotary kiln is a little conservative. Since the theory is not perfect, people prefer the classic theory of elementary mechanics rather than the not ripe strength design theory of the rotary kiln. In 1990s, with the development of finite element theory and computer technology, the finite element method began to be used at home and abroad to analyze the main parts of the rotary kiln.
Through finite element analysis of the rotary kiln, the experts of Henan Hongxing Mining Machinery have studied the principles to determine the repair and maintenance plan of the barrel according to the stress-strain, which has changed the way to check local damage of the barrel depending on the temperature. In these studies, the element study of the rotary kiln is rarely. The experts of Henan Hongxing Mining Machinery have studied the contact finite element of the entire rolling ring of the rotary kiln and the barrel. The focus is on the fatigue study of the entire cylinder. However, the contact angle distribution and the size of the contact force have not been studied systematacially.  The contact finite element study of the rolling ring and the supporting roller is rarely seen.
In short, the mechanical behavior of main components of rotary kiln is complex so that the theoretical derivation needs to make a large numbers of simplification, which is differed from the actual situation. At the same time, since the measurement is impacted by the test instruments, test means and the running environment of the scence of the rotary, a lot of field measurement is difficult to be achieved so that the theoretical conclusions are difficult to be verified. With the continues maturity of the finite element theory and the rapid development of computer technology, we should establish reasonable finite element analysis model to determine the reasonable boundary conditions for numerical simulation of the force situation of rotary kiln main components to obtain the deformation rules of the contact pressure of the main parts of rotary kiln and the force situation. 
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