In recent years, high-speed railway construction is in rapid development, whose construction requires a lot of sand and concrete aggregate materials. According to the new operating indicator, the requirement on the gradation and shape of sand and concrete aggregate materials is higher, which is nearly close to the international standard.

Crusher has become one of the most important industries after the rapid development these years, and more and more people pay close attention to it. The technology of crusher is becoming mature gradually. From introduce foreign technology to produce advanced crusher, this process indicates that our technology of crusher producing has been enhanced greatly. For high-speed railway construction crushers make great contribution. For example, the impact crusher.

Impact crushers are often used for the coarse crushing, intermediate crushing or fine crushing of limestone, coal, carbide, quartz, dolomite, iron pyrite, gypsum, industrial chemicals and other below medium hard brittle materials. Impact crushers adopt the latest manufacturing technology and unique structural design. The finished products are with the cubic shape without tension and crack. They can crush various coarse, medium and fine materials (granite, limestone, and concrete, ect.), whose feed size is not more than 500mm, and compressive strength not more than 350MPa. And they are widely used in various ore crushing, railway, highway, energy, cement, chemical and construction industries. The particle size can be adjusted, and the crushing specifications are diversified. Through the test of hundreds of projects and constant improvement, the impact crushers produced by Henan Hongxing with superior quality and exquisite workmanship, are the essential equipments for the high-speed railway construction.

Crusher has a tendency of international. Recent years, the export volume of crusher is larger and larger, and the range of export is more and more widely. Now more and more foreigners begin taking notice of our crusher.

Also, the crusher industry has the characteristics of environmental-friendly and industry concentration. The manufacturer should hold the development trend of crusher exactly to have a better development.

25-02-2012 om 04:22 geschreven door annazhao356  

Global mining firms are unearthing ingenious solutions to grapple with shortages of workers and equipment amid the commodities boom, recruiting retired miners and buying cut-rate equipment from China and Russia, executives said this week. 'We hired some guys out of retirement, that was the only way to survive and get the skills in place,' said Pekka Pera, chief executive of Talvivaara, a Finnish firm building a new nickel and zinc mine.

Mining firms innovate to cope with labour and equipment shortages Eric OnstadMining firms, trying to cope with shortages of skilled workers and equipment, have been forced to innovate and adopt new solutions, rehiring retired mineworkers and buying cheaper equipment from China and Russia.

Different mining firms in different countries have various methods and policies.

Pera and other executives told the Reuters Global Mining Summit the key was taking advantage of local situations to surmount obstacles thrown up by a global rush to build new mines as metal prices soar to fresh peaks.

The Finnish firm realised that the depressed region around the mine had a lot young untrained and unemployed people, but also a number of retired miners.

Training and keeping workers was the biggest challenge for Major Drilling Group, one of the world's biggest mine drilling companies, Chief Executive Francis McGuire said.

'It takes three to five years to train a driller and it is a very, very skills intensive industry,' he said.

On the equipment side, Peter Hambro, executive chairman of the Russian gold producer that carries his name, said his firm had slashed costs by local purchasing.

The tyre situation has improved, but a lack of them was one reason behind a fall in production last year at the world's biggest diamond mines in Botswana, said Sheila Khama, the head of De Beers in that country.

Right now, big shortages and long lead times were being seen in mills, said Peter Marrone, chief executive of Canada's Yamana Gold.

His firm managed to keep expansion projects on schedule by ordering mills even before the board had formally approved building the new mines.

25-02-2012 om 04:22 geschreven door annazhao356  

Construction waste recycling is to different crushing equipment, screening equipment, transmission equipment and equipment to remove impurities with a reasonable production assembly process.

Construction waste in many of the waste by sorting, removed or crushed, most of them can re-use as a renewable resource. Such as scrap steel, scrap wire, scrap wire and other metal by sorting, concentration, re-melted, it can be processed into all kinds of steel; waste bamboo, wood can be used to make artificial wood.

If enterprises can reuse and recycle construction waste well, the crushing equipment productivity must be pushed forward. Of course, in addition to this aspect, influence of crushing equipment productivity there are many factors, including internal and external factors, internal is broken, the functions and characteristics of mechanical itself is material properties outside influence. Specific as follows:

1) material of hardness. The more hard material broken up, and the more difficult for equipment wear and tear the more serious. Broken slow, of course, crushing small ability.

2) materials, namely material containing the humidity of moisture is bigger, within easy adhesion material in crusher, also easy to next material transporting process jams, causing broken ability decrease.

3) crushing the fineness of materials, high fineness requirement, which requires broken out of the fine, the material crushing ability and smaller.

4) material composition, the broken in the former materials containing powder more many more influence, because these fine powder crushing to affect delivery. Adhesion For fine powder content more should advance once sieve.

5) material viscosity. Namely material viscosity, the bigger the more easily adhesion.

6) crushing equipment broken pieces (hammer) wear resistance, the better broken, the greater the if not wear-resisting ability will affect the crushing ability .

25-02-2012 om 04:22 geschreven door annazhao356  

The advanced technology is the main factor of development, the development in China of the urban and rural is a kind of solidarity, they are promoted each other and influenced each other. While the R & D of new sand making machine will make the township economic in our country develops rapidly. New sand making machine is one of the ideal equipment producing mechanism sand, cushion material, asphalt concrete and cement concrete aggregate. Which is widely used in highway, construction and other fields and called new sand making machine for impact crusher. New sand making machine is grinding and crushing materials by the material mutual collision and friction between materials, therefore it is suitable for the coarse and hard crushing of hard, medium hard and abrasive materials.

Sand making machine is the equipment which makes sand artificially. It can be impact crusher or cone crusher according to the materiel condition and production requirement.

In the working process of the new sand making machine, a swirling crushing chamber is particularly important; the structure shape of the swirling crushing chamber structure shape is a annular space composed by the upper and below two cylinder. The crushing of the materials proceeds in swirling crushing chamber and the crushing effect is limited to the materials, which can play a role of to wear resistant as a lining; the observation hole is used for observing the wear pattern of the wear-resistant block in the impeller emission outlet flow passage and the linear at the top of swirling crushing chamber, the observation must be strictly sealed when the machine works; the distributor is fixed to the upper cylindrical of the swirling crushing chamber; when the impeller rotates at high speed, it will generate air flow which will through the distributor in swirling crushing chamber and the impeller forms internal self circulation system; at last the fine material will discharge out from the opening.

The sand making machine is especial suitable for making building sand and paving sand. Because of its low wearable feature, sand making machine is also used in high abrasiveness and secondary crushing industry. Besides, because there is no pollution for machine, sand making machine is well suitable for producting glass quartz sand and other high purity material industry. Its production capacity scopes is 10-500t/h., so sand making machine almost can satisfies all production requirement.

With the continuously development of Chinese economy, the machinery industry has continued to expand and the machinery is widely applied to large-scale construction, believe that after many years' experience in the mineral processing equipment production areas, we will provide more perfect and excellent performance sand or gravel production line for the market. I believe that in the near future China's development will be more quickly, rural development will make a spurt of progress.

24-02-2012 om 03:47 geschreven door annazhao356  

A computer simulation, a computer model, or a computational model is a computer program, or network of computers, that attempts to simulate an abstract model of a particular system. Computer simulations have become a useful part of mathematical modeling of many natural systems in physics (computational physics), astrophysics, chemistry and biology, human systems in economics, psychology, social science, and engineering.

It is from the last century that people from foreign country had optimized the structure and cavity of the jaw crusher by the computer simulating technology, they had developed the new jaw crusher with characteristics of no plug point, low height, light weight, good product particle, high yield, high performance and low power consumption, which thereby greatly improved the performance of the jaw crusher, shortened the developing cycle of product and improved the competitiveness of the product in the market. However, the simulating optimization design of the jaw crusher in China was mainly limited to the specific models of jaw crusher to prepare the corresponding procedure to optimize the design. And these procedures are mostly with little reusability, which can only solve the specific issues of particular jaw crusher. However, the optimized content of a crusher changes frequently with different requirements of different customers, so the simulation optimization design work needs large repeated and cumbersome programming work, which is time-consuming and laborious as well as extends the developing cycle of the product.

Jaw crusher is widely used in mining, metallurgy, building materials, highway, railway, water and chemical industries. Among them some large and medium-sized the jaw crushers are the main products. Especially in designing and producing large jaw crusher, we has been a leading level at home and abroad. Try to use the advanced design tools of kinematics and dynamics simulation to have a rapid development of the new jaw crusher and to have a simulating optimization design of the mechanism design parameters, which greatly reduce the workload of the simulation design, shorten the product development cycle and improve the reusability of the simulating model. To optimize the jaw crusher by the use of simulating technology, the main task is to optimize the feeding, discharging horizontal and vertical stroke and stroke characteristic coefficient of a jaw crusher.

Computer simulations are used in many fields, including science, technology, entertainment, health care, and business planning and scheduling. With this high technology, we believe that our mining equipments will get better performance.

24-02-2012 om 03:47 geschreven door annazhao356  

The bearing of general large jaw crusher mainly uses the open sliding bearing. The bearing liner is mostly made of Babbitt alloy, the scraping technical of this kind of bearing has a higher requirements. If the scraping is not good or gap adjusted improperly, there can cause burning watt accident.

In process of replacing the bearing of large jaw crusher, we should pay attention to the following points:

A. What should we do when remove the old watt of jaw crusher.

(1) Measure the thickness of the old bush joint surface gasket.

(2) Measure the levelness of the spindle.

(3) Examine whether the spindle is smooth or not, and whether it with the defects of rust, bumps and so on or not. If the situation is exist, you should to eliminate it.

(4) Measure the of the bottom clearance, backlash and end clearance of the bearing bush.

B. Testing of the contact of the watt-back with the bearing of the jaw crusher.

In order to prevent happening of the reverse sliding and rotating between the bearing bush and the bearing pedestal when the equipment operation, it generally adopts the pin, sleeve positioning mode.

C. The techniques requiring of the scraping the bearing bush.

Spindle scraping should meet the required standards of technical.

D. Scraping and grinding the spindle bush.

The scraping is generally divided into rough scraping, fine scraping and refined scraping three processes.

E. The measurement and the adjusting method of the bearing clearance.

Reasonable adjust bearing clearance is an important issue, it must meet specified standards

The general adjusting methods include: top clearance adjusting and measuring methods, side gap adjusting and measuring methods, the axial clearance measuring method.

F. The assembly and test.

When assemble the jaw crusher, clean the bearing bush, shaft, oil collector and lubricating oil pipeline at first. Then assemble the main bearing, connecting rod and other components. When testing, actuate the pump, and ensure the amount of fuel supply slightly bigger than that of normal operation. As in the process of testing does not appear the phenomenon that the temperature is elevated and the current significantly increased, that proves the success of the overhaul, then the equipment can be used normally.

24-02-2012 om 03:47 geschreven door annazhao356  

In the course of operating jaw crusher, sometimes the jaw crusher parking condition can be met suddenly. At this time, if the operator can not find the reason of jaw crusher parking and repair it immediately, the greater damage will be caused and all of stone product must be forced stop operation, so the abnormal jaw crusher parking will bring great loss for enterprise. Well, why the jaw crusher parking and how to deal with this situation are very important.

(1). In the process of jaw crusher operation, some workers will keep adding to the ore material to feed the inlet. As a result, the feeding material will be more than the carrying capacity of the machine, it will cause a blockage of the inlet. The jaw crusher parking will happen in this situation, the operators must clean up the crushing cavity before restarting, and evenly feed the material to avoid jaw crusher parking.

(2). Jaw Crusher is transmitted power by the drive belt, so if improper belt tension will cause jaw crusher parking. So the belt should be checked before you start the machine each time to see if the under belt is appropriate.

(3). Timely check up all the bolts of jaw crusher machine, the loosen bolts also can cause jaw crusher parking in the course of operation.

Here, we also introduct some preparation work before using jaw crusher.

(1) double-check whether good lubrication of bearings, thrust plate connections have enough grease.

(2) carefully check all fasteners are tightened.

(3) Carefully check the belt is good. If there is breakage, should be replaced when the belt or pulley on the oil, the oil rag and wipe applications.

(4) Check the protection device is good, that there is insecurity, should be immediately removed.

(5) Check whether the ore crushing cavity or debris, or debris if the ore, then must be clean to ensure crusher cavity start.

(6) Check whether the return from the top bolts, gaskets group is pressed, T-bolts are tightened.

24-02-2012 om 03:46 geschreven door annazhao356  

The vibrating screen installation and debugging is important for the vibrating screener users. If can influence the working life of vibratory screen and the quality of final products. So the installation and debugging played an important role in course of vibrating screen operation. So today we will talk about the vibrating screen installation and debugging in order to make the user know more about the vibrating screener working.

1) Pre-installation preparation

The new equipment, vibrating screen prior to installation, should be carefully scrutinized. As the manufacture of finished goods inventory piling up a longer time, such as rusted bearings, seals, aging or damaged during handling and so on, faced with these problems need to be replaced new parts. Also, as exciter, and the factory for rust-proof, injection of anti-rust oil, formally put into operation before the replacement into lubricating oil.

Instructions should be read carefully before installation, make full preparations.

2) The installation

(1) installation of supporting or hanging device. Installation, to foundation leveling, and then supporting or hanging device in accordance with parts drawings and installation diagram sieves, in order to install the components. Spring-loaded before the end-tag should be the actual stiffness values matching.

(2) sieve box connected to the supporting or hanging device. Bottles and later, should be required to adjust the angle. For the hanging of the sieve, it should also adjust the screen angle and screen box spindle box level. The general level of first-degree horizontal adjustment to eliminate the screen box deflection. Levels after correction, and then adjust the vertical inclination of sieve box. Vibration isolation spring force should be uniform, which could force the situation by measuring the amount of spring compression to judge. General, two sets of feed-side of the compression spring to be the same two sets of springs discharging side should also be the case. Nesting side and feed side may be differences in the amount of spring compression.

(3) installation of electric motors and the triangle tape. Installation, leveling should be based on the motor, motor level of need for correction, two tape round the corresponding grooves of the center line should coincide, triangular tension dictate the appropriate tape.

(4) required to install and fixed-screen surface.

(5) Check the connection sieve components (such as the sieve plate, exciter, etc.) a fixed situation, screen should be uniform tension, in order to prevent the generation of local vibration. Check the transmission part of the lubrication conditions, the motor and control box wiring is correct, and the rotation transmission part of the hand to see whether it is normal operation.

(6) Check the entry sieve materials, discharge chute and the funnel at work the next screen whether a crash.

3) Commissioning

Screening machine installed, commissioning should be empty, the initial check installation quality, and make the necessary adjustments.

(1) shall not be less than the sieve empty commissioning time 8h. In this time, the observation of sieve quickly whether to initiate a smooth, vibration and stability of operation, no special noise amplitude by the amplitude to observe its compliance with licensing requirements.

(2) The sieve operation, the vibrating screen box should not result in yaw. In case of yaw, which may be due both sides of the spring height difference is too large, hanging rope pull uneven rotation axis is not horizontal or triangular tape too tight, should be adjusted accordingly.

(3) driving 4h, the bearing temperature is rising, and then remained stable. The maximum temperature does not exceed 75, temperature should not exceed 40.

(4) If abnormal noise or driving after a sharp increase in bearing temperature should be immediately shut down, check whether the rotation axis is a flexible and well lubricated and so on, until after the start troubleshooting.

(5) 2-4h after driving down to check whether there are loose connection parts, if there are loose, tighten until after the drive.

(6) 8h after the test if no failure, only the installation of project acceptance.

24-02-2012 om 03:46 geschreven door annazhao356  

The ball mill noise control is to control the noise output of the ball mill in the process of crushing materials by the engineering measures and is also to control the spread and receive of the noise,which is in order to reach the required acoustical environment.

Strong vibration and noise will be produced when the ball mill crushes materials and the noise can be up to about 100 to 115 dB (A),which does great harm to the operation workers and the surrounding environment.

If you want to control this noise of ball mill, the selection and application of ball mill sound insulation is important.

The ball mill sound insulation enclosure though no typical heat source, but cans in the collision of Jane long-term friction also can produce certain quantity of heat, also need to ventilation cooling. So the top cover open a vents and matches the muffler. The lower end plate and cover between shaft have crack, lie between the subglottic also often open, don't have to put wind path. This kind of equipment is to heat, the natural ventilation cooling way is enough. The cover of the structure of ball mill for assembly type, the first ball mill around erection channel steel skeleton, and then it into pieces of the cover wall plate assembly in successive skeletons. The upper portion of the cover plate for tile form, all assembly method for bolt coupling fixed, so in the equipment can be easily removed when the overhaul the sound insulation cover.

For convenience of homework personnel, in the sound insulation cover body is equipped with 8 group published two groups and the sound insulation window. The group of five for personnel to enter the laryngeal mask for ball mill in related to the operation with, the upper two equipment maintenance special door and a note oil lubrication with little door. Except through the sound insulation window lighting outside, enclosure also equipped with lighting facilities. Since it is the local sound insulation cover, there is part of the equipment in the hood, there is a cover body and the original equipment, the combination of between. Cover board and equipment should be sealed tight between fixed position. The problem is turning parts of the body and cover with more difficult, the rotation axis to cross the ball mill sound insulation cover the board, shall keep a circle gap here. Aperture neither too big. To avoid missing voice sound insulation effect influence; But neither is too small, so as not to cover plate and contact friction between the axis.

Sound insulation cover wall the composition of the board from inner to outer is as follows: 3 RRN thick plate, 6 nm thick drain clear stone cotton lint damping layer, 10 (~ en thick rock wool sound-absorbing board, spun glass cloth and 1 mm thick, perforation rate 30% of the principal part of the perforation panel. Cover plate thickness of the total for 11 firm. In the ends of the cover because of the self-contained tank tube end of the gap between less than 100 ram, cover board and not allowed and rotation tank have a contact, and therefore the place between the cover thickness for five (krma. Close to the shaft of the site because operation requirements often remove cover board, so this part of the cover plate is 4 ding m thick panels, with handles, may at any time off. Provide brand products within: the ball mill, the rotary kiln, mineral processing equipment, the grate ball mill and super fine ball mill.

Noise control of ball mill is the most direct, the most effective, the most economic measure to reduce the sound source sound:' from the sound source control noise'. So reducing noise source noise is the development trend of the research on noise control of ball mill.

24-02-2012 om 03:46 geschreven door annazhao356  

The rotary kiln is a rotary calcining kiln (commonly known as rotary kiln), belonging to the class of building materials equipment. I produced the rotary kiln system is equipped with technological innovation in the system using the most advanced hydraulic block device using a high measurement accuracy of the metering piston pump, high-precision speed control valve, contact graphite block sealing devices and other domestic advanced technology.

Henan Hongxing made of excellent quality within the rotary kiln, divided into several kinds of preheating decomposekiln, please welcome the experts to the decomposition ofrotary kiln and explain, the characteristics of the evaluation of decomposing furnace points:

(1) the gas flow, gas into in two different ways: the kiln gas into the way, air into the way.

(2) material feeding the position of the point: jet fuel, feeding entrance.

(3) rotary kiln temperature decomposition.

(4) rotary kiln stove burning conditions of fuel.

(5) of the rotary kiln powder and the residence time of gas.

The cylinder of kiln is made by high quality carbon steel plate , cylinder and rotary department is supported by supporting device through tire. At the middle part of the cylinder Fixed a large gear , the rotation of cylinder is through speed regulating motor--reducer --pinion -- large gear. Materials is feeding through the preheater chute to the rotary kiln, because of cylinder tilt and slow rotation, material along the circumference side scrolling, meanwhile moved to kiln head along the axial, Materials has been preheated, decomposed, sintering, then become to calcined dolomite ,and discharging into the cooler from the kiln head. The gas or coal powder as fuel is burning through the burner, the heat will be transfered to material by the flame radiation, the heat convection, kiln brick conduction , etc, then material calcined into finished products.

Henan Hongxing Mining Machinery Co., Ltd. manufactures various equipments for whole set of stone production line, and provide complete technical support for customers. The whole production line consists of stone crushing line, powder making line, sand making line and ore beneficiation line. We design different production lines ranging 50 t/h to 500 t/h by combining different models of equipments also matching cone crusher, deduster, etc.It is widely used for crushing hard limestone, granite, basalt, gravel, metallurgic slag, etc or artificial sand making for hydroelectric power, building material, high way, city construction, etc. Different models of equipments are combined to meet different customers' demands according to different craft requirements.

24-02-2012 om 03:46 geschreven door annazhao356  

The coal vibrating screen manufactured by Henan Hongxing Mining Machinery has accessed to countrywide patents, and also the coal screen as critical coal preparing gear act being an critical function within the processing circulation of coal screening plant. The perfect coal screening equipment is extensively utilised in coal market large-scale, mechanization, continuous grading operation.

Our coal vibrating screen has several benefits: mild excess weight, low noise, small energy consumption, higher efficiency, lengthy provider life, basic construction, handy maintenance attribute, utilised the high wear-resisting and high hole and so on.

The coal vibrating screen is the main screening tool for coal dressing. The normal screening work is realized by vibration, this is determined by the characteristics of silo wall vibrators. But vibration is the root cause of noise, and the noise with high sound level and sound source has variety and complexity. How to reduce the coal vibrating screen noise is important in the coal dressing process. There are some measures in the following for reducing the coal vibrating screen noise.

1. Fasten all the parts of coal vibrating screen, especially the screen plate which need to be replaced regularly, to avoid the necessary vibration caused by individual components of coal vibration screen.

2. The punching plate should be replaced by polyurethane sieve or rubber sieve which has the features of modulus of elasticity is small and low impact noise. It can be equipped with anti-blocking device.

3. Add rubber sheet in the sieve box side,feeding and discharge port, which can effectively suppress high-frequency vibrations and reduce radiated noise.

4. Replaced steel spring with a rubber spring, to reduce the impact of coal vibrating screen.

5. Add the soft acoustic shield out of the excister. Between the inner and outer coat of the bearing to be damped processing, rolling of anti-blocking device bearings can be made into a hollow roller or adding damping material in the hollow rolling inside, this can reduce the bearing vibration and reduce bearing noise.

24-02-2012 om 03:46 geschreven door annazhao356  

Beneficiation Machinery Production Line is mainly consisted of Vibrating Feeder,Jaw Crusher,Ball Mill，Classifier, Magnetic Separator, Flotation Machine, Condensing Machine ,Spiral Separator and Drying Machine.

The main purpose of beneficiation equipments is long-term use, it is unnecessary for people to buy the most expensive mineral processing equipments, but be sure to choose the right. People should according to the beneficiation test process, combine with the process capacity and the field conditions to choose the processing plant design and choose the right mineral processing equipment. In the purchase of mining equipment, in the case of the price difference is not large, be sure to choose the beneficiation equipment with good quality, to know the production machine to stop one more day, it may bring loss of tens of thousands or even millions.

In different place, because the ore grade, mineral structure, mineral form, mineral occurrence, the size and other properties are different, so the ore beneficiation process and technical conditions are different, this determined that the applied mineral processing technology is differ from others. People must test their own ore quality and then choose the proper beneficiation equipments. And then determine the use value of mineral. People who want to invest in the mine, no matter how high-grade of the mine, the first thing is find out the geological reserves and better with geological detailed investigation report. To know the ore components is the first step to choose what kind of beneficiation equipments is suitable. The beneficiation equipments incluedes ball mill, shaking table and so on.

Henan Hongxing has a share holding company engages in providing services for mining and construction company as well as providing professional advice for building a factory.

All of them have implementation experiences in mining and construction project management. During the recent years, we have already undertaken assembly lines of different products for tens of big-scale multinational company and small-and-mid sized companies in China. And our staff receives business management courses in University at a regular time to obtain advanced management idea.

24-02-2012 om 03:45 geschreven door annazhao356  

Stone crusher also named rock crusher includes stationary crusher, portable stone crusher or mobile stone crusher, mini stone crusher, large heavy duty stone crusher, used stone crusher, etc. According to stone crusher application, it’s usually used to take as primary crushing machine or secondary crusher equipments in stone crushing plants, grinding mill plants, limestone crusher plants, rock quarry plants etc.

Stone crusher is used to crush these stones into small size or change the form such as limestone, quartz, marble, granite and recycle building waste materials such as debris, asphaltic cement concrete. Usually in stone crusher plant, we crush stones into small particles with diameter of 10mm, 12mm, 19mm, 25mm, 50mm, 100mm. According to the stone crusher usage, jaw stone crusher is used as primary crusher machine, when big stones are crushed smaller after jaw crusher, they are transferred to impact stone crusher or cone stone crusher for secondary crushing, then go through the stone shapping machine for getting cubic size. Using screening machine to screen out the suitable building aggregates, while the unsuitable stones return to the stone crusher machine for re-crushing.

The birth of a crusher, whose production process, is a little long. After its rough machining, modulation, fine machining, etc, an important step is doing beauty for crusher. What the consumer need is not only its high-tech feature, but its beautiful appearance. Henan Hongxing makes perfection more perfect in every step. And now we will analyze the appearance of crusher.

For cabinet of crusher, after its stress relieving, then it will be abrasive blasting. Through this step, the surface will be more smoothly. Even though it seems not essential, a good crusher manufacture will try its best to make the appearance more beautiful, meanwhile, the production cost will be higher. However, Henan Hongxing can make his consumer feel good vale. The abrasive blasting process is not just for crusher’s good-looking, but gaining in strength of paint.

23-02-2012 om 04:03 geschreven door annazhao356  

When the customers are going to buy the sand making machine, they will first to be asked that what kind of material. This is because the different hardness of material need different equipment, there will also have different production capacity in the future. The sand making machine which researched and developed by Henan Hongxing is used for highway, high speed railway, municipal, and other public infrastructure, and it is the first choice of artificial system sand and plastic field.

Sand making machine main features and benefits:

Simple structure and low operating cost; high efficiency and low consumption; has the function of fine crush and crude grinding; slightly influenced by the moisture content of material, and the max moisture content is 8%; more suitable for crushing mid-hardness and high-hardness materials; cubic shape of final products, high density of piling up and low iron pollution; more wearable and easy maintenance; low working noise and light dust pollution.

The pertinence advantage of sand making machine, take the cobble for example, some users directly choose crusher for the crushing of cobble to pave roads, but leaked the most important sand making machine, actually this is not correct. Based on too much users don't know much about the sand making machine while deal with too hard stone so they can't choose the suitable equipment, insiders of industry recommend, for the material such as cobble with higher hardness, users can choose the sand making machine. This equipment has unique advantage compare with the traditional equipment on the crushing of cobble; output capacity is 35%-50% higher than the traditional crushing equipment with same scale! And as renewal of the sand making equipment, the application scope of sand making machine becomes more widely, not only the concrete aggregate of civil engineering and the stable layer material of highway construction; they all need the strong support of the sand making machine.

The sand making machine can come to the fore in many mining equipment is not by chance, this is through a long process and summing up experience and crushing technology, condensed the essence of this industry. So it can say that the sand making machine is the best choice of the benefit advantages under the mode of new economic development.

23-02-2012 om 04:03 geschreven door annazhao356  

In recent years, though the sand making machine has experienced a fast development, questions still remains to be solved. For example, how to decrease the noise of sand making machine? In order to solve this problem, shunky’s experts have been focusing on it for many years and summarized the following solutions:

1. Do the self production to the workers near the sand making machine, they can wear earplugs, covers and other noise-prevention tools. At the same time, do the rotation work, thus it can shorten the workers suffering time from the noise of sand making machine.

2. Improve the craft level of sand making machine. Shunky’s sand making machine has a smaller noise than other supplier’s ones, usually it can decrease 34% on average.

3. Do the sound attenuation, absorption, insulation, isolation job to the sand making machine.

4. Control the spread of noise of sand making machine.

In addition, shunky is still working on decreasing the noise of sand making machine, which will be bound to have a better result.

Sand making machine working principle:

Stone enters sand making machine though conveyor belt. Stone is crushed by hitting other stones. Material falls down to impellor cavity. Under great centrifugal force, it hits material that coming downwards. After hitting each other, they force a vortex between impellor and shell, and hit each other several times, finally smaller stone comes out, and goes to vibrating screen.

Satisfactory material is transported to sand washing machine, however overlarge material will go back to sand maker to be refreshed. Output sizes can be made according to customers requirement. If input size is larger than the designed size, other crushing equipment will be necessary.

23-02-2012 om 04:03 geschreven door annazhao356  

Jaw Crusher is a primary crushing machine used for coarse crushing plant in stone quarrying and mine ore mining process. It has properties of large crushing ratio, even granularity, simple structure, reliable operation, easy maintenance, and low cost. So this kind of jaw crusher can be widely used in mining, metallurgy, iron ore, building material, highway, railway, water project, chemical industry, etc, for crushing various material with compression strength less than 320MPa.

Jaw crushers are equipped with one fixed and one moveable crushing jaw (moving jaw), both of which support crushing plates (wearing parts) in several versions. They form a wedge-shaped crushing zone. The walls of the crushing zone are made of replaceable wearing sheets. Crushing is done between the two crushing jaws. The moving jaw of the single toggle jaw crusher moves elliptically. A pendulum motion is being carried out by the double toggle jaw crusher.blake jaw crusher is is widely used in mining and quarry.

The crushing force is produced by an eccentric shaft. Then it is transferred to the crushing zone via a toggle plate system and supported by the back wall of the housing of the machine. Spring pulling rods keep the whole system in a condition of nonpositive connection. Centrifugal masses on the eccentric shaft serve as compensation for heavy loads. A flywheel is provided in the form of a pulley. Due to the favorable angle of dip between the crushing jaws, the feeding material can be reduced directly after entering the machine. The final grain size distribution is influenced by both,jaw crusher is the adjustable crusher setting and the suitability of the tooth form selected for the crushing plates.

The following is the process of jaw crushing plant:

The Big materials are fed to the primary jaw crusher evenly and gradually by vibrating feeder through a hopper for the primary crushing. After first crushing, the material will transferred to impact crusher or cone crusher by belt conveyor for secondary crushing; the crushed materials will then transferred to vibrating screen for separating.

After being separated, the parts that can meet standard will be taken away as final products, while the other parts will be returned to impact crusher, thus forming a closed circuit. Size of final products can be combined and graded according to customer specific requirement. We can also equip dust catcher system to protect environment.

Jaw crusher maintenance features finite element analysis technology, top manufacturing materials, higher crushing strength, simple structure, safer and convenient, which has greatly extended the bearing’s service life. Due to the tooth guard, the whole cast steel of the bearing seat has greatly improved the production, and have definitely occupied the leading position in our China’s machinery area.

23-02-2012 om 04:02 geschreven door annazhao356  

For some people, the concept of Routine Maintenance is like watching your diet or going to the dentist: Everyone knows they should do it—but sometimes it is easier just to put it off for a while. Among the wearing parts of crusher, the most easily damaged parts are its jaw plates. After buying equipment, the expenses on fragile replacement is also a bunch of spending. In order to improve the work efficiency and reduce unnecessary spending, lengthening the span life crusher’s jaw plate is particularly important.

There are two kinds of jaw plate used for jaw crusher: mobable jaw plate and fixed jaw plate. The movable jaw plate is made of high-quality cast steel. The precise machining and strict testing ensure that its high reliability and safety. The fixed jaw plate, like the movable jaw plate, is made of high-manganese steel, it’s designed symmetrically; so if one end is frayed, the other end can be used.

The eccentric shaft is made of forging steel, which is of high stength and rigidity. The bearing adopts four sets of the self-aligning roller bearing; it has a great loading capacity and auto self-aligning. The fly wheel and groove wheel are made of cast iron. Its weight and the structure can ensure the blance of the crusher.

In the production process, jaw plates of crusher hit the material directly, crushing force is very big, especially crushing the material with great hardness, lead to the nut becomes loose which install the plate, has great noise, makes the plate worn or intensified seriously even stops the crusher. In that case, concrete analysis according to the actual situation. Particular way is to make the spring on the crusher to be self-fastened device, put the device to wear in the bolt tighten the nut, because after the spring was pressing to a certain degree, they will create strong anti-vibration effect, the loose of nut on the crusher will tighten up by the action of self-fastened device, so not bolt looseness and prolong the service life of jaw plates. In short, it can figure out a way to solve specific problems in using process of crusher on specific conditions, and prevent the jaw plate loose, the wear is intensified, broken and so on, so as to extend the service life of jaw plate, reduce the cost, improve the working efficiency of the crusher.

While the crusher is working, the jaw plate directly contacts with material, bear enormous crushing force and friction with material, the service life of jaw plates directly related to the work efficiency and production cost of jaw crusher, therefore, it is a way for the survival of enterprise that is to extend the service life of jaw plate of crusher.

Only a qualified technician should carry out these maintenance steps. Should your jaw crusher require basic or full maintenance, make sure you let the experts handle your request. Remember, maintaining your assets correctly and timeously will save your company money in the long run.

23-02-2012 om 04:02 geschreven door annazhao356  

There are complete kinds of crushers, and how to position crushing ability of crushers? Due to different customers' demand and different practical situations, we can choose different crushers such as jaw crusher, impact crusher, hammer crusher, Hongxing cone crusher and so on. So how to position the crushing ability of crushers? The crushing ability of crushers means the amount of crushed materials in unit time, its unit is calculated by t/h. How many factors will affect the crushing ability? There are many factors to affect capacity of crushers:

a. The Hardness of Materials . If the materials are harder, it is harder to crush them and the abrasion of equipments will be more serious. It will cause lower speed of crushing and will definitely lead to smaller crushing capacity

b. The fineness of crushed materials . If the demand on fineness is higher or the crushed materials are requested to be finer, then the crushing capacity is smaller.

c. The viscosity of materials. It means if the viscosity of materials is higher, they are easier to be adhered together.

d. The better the abrasion resistance of crushing parts of crushers is, the bigger the capacity is, If they cannot resist abrasion, it will affect capacity.

e. Humidity of materials. It means if the moisture of materials is higher, materials are easier to be adhered inside of crushers and easier to be blocked in the process of delivery when discharging, which will cause capacity smaller.

f. The composition of raw material. If there are more powder contained in raw materials, it will cause more effect on crushing, because the powder are easy to be adhered to affect convey. Materials contain much powder should be screened in advance.

23-02-2012 om 04:02 geschreven door annazhao356  

Reusing these materials also lightens the load on our landfills. Examples of these materials include industrial co-generated materials such as fly-ash (from power generation industry) and blast furnace slag (from steel manufacturing).

And like concrete itself, old rebar is recycled into new. Incidentally, did you know that steel and concrete are among the most recycled materials in the world? The asphalt industry would have you believe asphalt is the most recycled material in the world, but the truth is that much of that recycling happens because asphalt pavements require complete demolition and reconstruction every 8-10 years.In sharp contrast, a comparable concrete pavement can easily last up to 40 years.

Concrete is made from granite aggregate, sand, cement, and water. While cement itself cannot be recycled, there has been increasing interest in recycling aggregate because of the environmental costs of mining the material and shrinking landfill space.

Concrete is an almost inert material.Because of its inert nature, but also because it cures to a solid form, it is ideal for using industrial by-products that otherwise would have been deposited in landfills. A stell mesh sunshaded box of a building in the dusty industrial estate of Kranji Crescent has been hosting a steady stream of visitors from China, Mongolia, Israel and France over the past four months.

Concrete is made from granite aggregate, sand, cement, and water. While cement itself cannot be recycled, there has been increasing interest in recycling aggregate because of the environmental costs of mining the material and shrinking landfill space. Currently, recycled aggregate is mainly used to line the bottom of roads and cast into road kerbs, rather than used in building structures, due to concerns about its strength.

Recycling concrete is a smart and environmentally-conscious choice that saves resources. With in-place recycling, the recycling process has become even more cost-effective, too!

In-place concrete recycling reduces construction costs because a contractor doesn’t have to locate a recycling center or pay for trucking the materials away. This saves money for taxpayers and agencies.

23-02-2012 om 04:02 geschreven door annazhao356  

The limestone roll crusher is suitable for crushing sulphur iron ore, phosphate ore, barite, celestite, coke, limestone and so on. The limestone crusher can be divided into roller crusher and four roller type crusher according to the number of roller. The operators should to do maintenance work when roll crusher at work, so as to extend the using life of the crusher. In this regard, look what should pay attention when the limestone roll crusher in the work!

The most important issue of limestone crusher equipment selection is to know what this device will have to bear the task. In other words, the limestone crusher equipment selection is the core issue of what it is to process the material? What the material particle size is? How much the capacity and what kind of product will be produced? The material need to be processed is varied. Each material has different characteristics. Some materials are crushed more easily, while others require more crushing energy; some of the materials will be broken into blocks, and some materials will be broken into powder; wear and tear of some limestone crusher machine is strong, while others are caused by the wear rate of limestone crusher equipment is very small.

Pay attention to the bolt-on condition and immediately tighten up if any bolt loosen. Starting the limestone roll crushe first, feed material after the machine operating normally. Regularly check the wearing parts of limestone roll crusher, pay attention to replace wearing part at any time. Check the discharge condition of roll crusher, eliminate material if any blocking happened.

Additionally, the machine should not be overload, pay attention to the electric instrument at any time. The bearing of roll crusher should be refueled timely and avoid oil leaking in the bearing. Control the bearing temperature and not higher than the surrounding air 25 to 30 ℃. The limestone roll crusher is widely used in cement, metallurgy, chemicals, electricity,coal and other industries for processing the brittle and ductile materials.

In order to select limestone crusher equipment for a particular purpose, people should know what kind of material that being crushed. For example, if the material is limestone, you can choose the limestone crushers such as, jaw crusher, impact crusher. But the differences between these materials is significant. Tests of materials in laboratorycan be able to avoid some unnecessary spending a lot of information. For example, as high wear resistance index of the quartzite-like materials should not be fed into the impact crusher, because this equipment not only with high maintenance costs, but also to spend a lot of time. The kind of dolomite materials do not need to use large scale limestone crusher equipments.

23-02-2012 om 04:02 geschreven door annazhao356