If the quartz content and water content are so high that hammer crusher or impact crusher cannot be used, two-phase crushing system should be adopted. In general, the double roller crusher, roll sizer, jaw crusher as well as cone crusher are suitable for the two-phase crushing system for abrasive materials. Their crushing ratios are much the same (about 15-16), but their adaptive capacity to hard or wet materials is quite different. The jaw crusher and cone crusher crush the materials by means of high pressure, and they can handle hard rocks with compressive strength up to 400Mpa. The double roller crusher and roll sizer are influenced by shear and pull force, and they are only suitable for crushing materials with compressive strength less than 175MPa. However, they can process materials with high viscosity and corrosiveness.

The selection of crushers for cement plant should take into consideration the following factors raw materials’ hardness (generally represented by the compressive strength), corrosivity (usually described with free quartz content), and viscosity (water content, and clay content). In accordance with the above information, you can make a choice.

Selection Criteria of stone Crushers:

Crusher TypeMax. Crushing RatioCompressive StrengthQuartz Content(％)moisture content(％)

Single stage hammer crusher1100＜150≤8＜10

Biaxial hammer crusher1100＜150≤8＜15~20

Impact crusher120＜175≤12＜8

Jaw crusher15＞150~400＞15＜5

Cone crusher15＞150~400＞15＜5

The requirements on limestone crushing are relatively high. After being processed, the particle sizes can reach 0~25/80mm. The crushing processes should be reduced to the greatest extent, so that the one-time investment and maintenance costs can be reduces. The hammer crusher or impact crusher with high crushing ratio can meet the requirements for single stage crushing, but the quartz content should be less than 8%-12%. In terms of the impact crusher, the water content of the materials should be less than 8%. On the part of the biaxial hammer crusher, the water content can reach up to 20%, and limestone and clay can be fed at the same time.

09-02-2012 om 07:02 geschreven door annazhao356  

Hongxing conveyors are made of steel structures, protected from corrosion by hot dip galvanizated with zinc deposition on the surface, the drive end and the tail end are preassembled in the workshop the intermediate parts consist of two side walls and the central frame and are designed to have small footprint during transport, yet not compromising the sturdiness and solidity of the belt. The shaft and the drum of the either end are not welded but fixed by some rigid couplings to ease any replacement in case of damage of some parts (i.e. brake of a bearing, etc...).

A FULL RANGE

- Inclined conveyor belts: designed for use in conveyance of material up an incline, they are best used to transport aggregate to the different sections in a crushing plant.

- Bucket elevators: mainly used in sand production plants or washing plants.

- Extracting conveyor belts: usually used to extract the materials from feeding to crushing or screening.

- Horizontal conveyor belts: usually fitted with side walls and feet or trestles to convey aggregates horizontally.

Direct transmission with helical gearbox, pulleys and belts. Electric motor equipped with hydraulic joint to make the start of the conveyor sweeter, protecting the entire transmission. In its basic form HXJQ belt conveyors consist of a driving head pulley, a tail pulley, the moving belt, support rollers, cleaning devices, tensioning mechanisms and a structural frame. The classic transmission system through motor, belts, pulleys and gearbox is the guarantee of the maximun flexibility of use, offering the possibility to ajust the speed according to every need.

Supplied as standard is a belt scraper, a strong and anti-corrosive cleaning unit for easy maintenance and maximum belt cleaning efficiency. Hongxing Crushing Plants thinks it is vital to adopt a system of cleaning already in the conception of a coveyor, above all for those plants requiring a high standard of cleanliness. Our belt scrapers have an adjustable spring tension system: springs push the bar supporting the different scrapers, usually chosen according to the material to be processed. Amongst them, some scrapers have some widia inserts, highly resistant to abrasion and wear and particularly suited for abrasive and dirty materials. The use of belt scrapers reduce the loss of material, increase the plant capacity avoiding most of the wear of the return rollers, thus reducing maintenance costs and downtime.

To promote long, trouble-free life to every conveyor Hongxing Crushing Plants makes sure that the designer has designed it with quality components that can handle the entire range of forces generated in its use. One way to insure that is to engineer every part taking a load and then review the design calculations and the component selection.

09-02-2012 om 07:02 geschreven door annazhao356  

In mining industry, crusher is usually used for crushing raw materials, with more than 8 mm thick. Crusher can be divided into primary crusher and fine crusher. Generally speaking, the processed materials can be 0.074 mm thick, or even smaller. The process is use outside force to crusher bigger materials into smaller.

In recent years, with excess capacity and homogeneity intensifies in China's crusher industry, which increased competition in the market. Some companies began to adopt some irrational promotions from buy product draw large domestic appliances to get prizes such as cars, small breakers until the introduction of mortgage purchase zero first-pay promotional measures.

In cement production, most of the materials need to crusher. Limestone takes a large proportion in cement processing, and has high hardness and large particles, so it also need to be processed by crusher. Jaw crusher, impact crusher, shaft impact crusher, and hammer crusher, they all widely used in cement plant.

As fast development of the society, the mounts of crushing material is increasing heavily, crusher plays more and more important role in our national economy.

Now , China crusher(hammer crusher, roll crusher) market opportunities have emerged , 'tiger ' will come here. Tiger said here ,including the macroeconomic slowdown , tightening of monetary policy , tough credit environment, including market advances , the adverse situation of excess capacity ,rising raw material prices increasingly, labor costs ,as well as emerging problem of adverse market order. Due to these 'tiger' catch-up,in the crusher industry more than a hundred Chinese Original Equipment Manufacturers and component manufacturers have started a super- scale long-distance race. It is the the competition between enterprises has become not only the competition between product quality, But also the competition for technology, markets, capital technology , services ,marketing channels, R & D capabilities , and many other elements.

Henan Hongxing Mining Machinery Co., Ltd has designed and manufactured a large amount of various crushers, a series of new rock-crushing equipment, which largely expands the concept domain of coarse crushing and fine crushing, such as PE/PEX jaw crusher, vertical impact crusher, hydraulic cone crusher, mobile crushing station. It has successfully removed the obstacle that crushing site, environment and complex infrastructure. HXJQ has made great contribution in cement industry, and we will always on the way!

09-02-2012 om 07:01 geschreven door annazhao356  

Mining, extraction of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminum; precious stones, such as diamonds; building stones, such as granite; and solid fuels, such as coal and oil shale. The search for and discovery of mineral deposits is called prospecting, or exploration. When a mineral deposit is found, it is studied to determine if it can be mined profitably. If so, the deposit can be worked or extracted by a variety of mining methods.

The mining industry is one of the most dangerous working environments. Mining equipments are instruments that are commonly used in extraction of minerals from the earth surface. In the past, ancient times, miners used to excavate minerals and metals by using simple hand held tools. With the introduction of automation and modernization, today’s mining world enjoys the benefit of many types of mining equipments that are used specially for mining purposes. Modern day mining equipment is powered mainly by electricity and hydraulic energy.

Mining equipments are available for various types of mining methods that are performed around the world. There are various types of mining equipments available in the world. Some of them are industrial shredders, drilling equipment, blasting equipment, drill rigs, hammers, mine winders, blasting machine, Mining Locomotive, well drilling machine, industrial crushers, cutting machines, drills, loaders, blasting devices, Track Drill, Rock Drill, etc. Some examples of mining equipment that is used extensively in mining operations are: hard hats, clothing/gear, ventilation fans, rock dusters, tractors, earth movers, water jet pumps, cutting machines, drills, loaders, blasting devices, dozers, trucks, cranes, fork lifts, draglines and many other machineries. A mining light system is important mining equipment used for all mining processes. A mining light system increases the efficiency and the speed of mining operations and guarantees optimum results in mining process. A mining light might consist of a heat sink, LED or laser, magnetic switch or a focusing cone. Gold pans, sluice boxes, metal detectors, digging tools, gold vials, snuffer bottles, etc., are equipments used for gold mining. Various kinds of large mining excavators are available for mining field. The mining excavators using advanced technology help in reaching the international level of performance in mining processes.

There are mining equipments available specifically for Surface mining processes such as open-pit mining, strip or area mining, quarrying, contour mining, mountaintop removal, and placer mining. For example, some of the Open Cast Mining Equipments are Rock Drills, Drifter, Paving Breaker, DTH Hammer, Wagon Drill, Slim Drill LD-4, Pneumatic Crawler Drill, TCT Drill Steel Grinder, and Cross Bit Grinder. There are excellent mining equipments available for Sub-surface mining processes such as shaft mining, drift mining, borehole mining, slope mining, and hard rock mining. Similarly, there are special mining equipments for deep underground mining processes such as Longwall mining, Continuous mining, Blast mining, Shortwall mining and Retreat mining. For example, some of the underground Mining Equipments are Junior Simba, Mucking Machine, Slurry Pump, Exhaust Fan, Air Mover, Cement Injection Pump, Pneumatic Power Pack, Turbo Light, Spare parts for Atlas Copco Drifter BBC-120F, Simba Junior, BMS-46 Feed Motor, BSP 10 Pneumatic Rod Catcher, Atlas Copco Cavo 310 Loader, Pneumatic Raise Climber, Eimco Loader & Hopper.

The use of right mining equipment is very essential for increased productivity. For example, the use of large mining equipment in surface mining maximizes the recovery through the excavation of one or more coal seam deposits in the large area surface mines.

Many features, restrictions and criteria need to be considered while choosing the mining equipments for a mining process. The two most important factors for choosing any type of mining equipment are its strength and durability. Cost is also an important consideration while selecting mining equipments.

Mining is a very dangerous process. If a wrong piece of equipment or tool is used for a specific mining purpose, it might lead to disaster. Therefore it is important that everybody involved in the mining operation must know exactly how to use their mining tools properly. Each worker should be properly and thoroughly trained to use every part of mining equipment they will be using. Also the workers should be educated about the safety measures in using the mining equipments.

09-02-2012 om 07:01 geschreven door annazhao356  

When individuals hear about exploration, most will think about enormous trucks and bulldozers as the primary mining equipment. While this image holds true today, tools employed for mining have come quite a distance from its roots. Historic miners probably can't think about the existence of these devices. If you're curious to discover more, here are a couple of suggestions to get you started.

Mining operations can be large and complex undertakings. In order to keep things running smoothly and safely, you need to have the mining supplies on hand to make repairs and make sure your project is completed on time. For fast service and a variety of choices, search for mining equipment for sale online from multiple mining equipment distributors.

Many mining equipment manufacturers have detailed specifications and photos of their inventory on their websites. When browsing the offerings of a mining equipment manufacturer, look for deals on refurbished or used mining equipment. Find everything from dryers and kilns to screens and centrifuges. No matter how big or small, you can find the mining tools necessary for any type of mining operation, or any stage of processing materials. Find mine equipment for:

1. Drilling and excavating

2. Screening and feeding

3. Weighing and monitoring

In order to remove the resources you're after from the ground, you need a good drill. Whether you're drilling through rock, drilling wells, or searching for oil and gas, you need to be able to cut through the earth quickly and get what you need. Find an online supplier of excavation equipment for your specific mining task. In mines, conventional radios often won't work. In order maintain direct lines of contact, you need to install an underground communications network. Find a mining equipment manufacturer that helps design and install the perfect network for your mine.

At this time, gear utilized for excavation and extraction evolved. Some grew to become far more complex. As an example, trucks employed for exploration are now much more refined. Several trucks being utilized at present have electronic machines employed for dumping cargo and driving close to the mines. These motor vehicles might also be furnished with sophisticated suspension systems for greater driving performance.

Since the world continues to excavate for oil along with other valuable minerals, mining equipment is here to remain. In the future, this gear may have far more refined capabilities to make work simpler for all.

09-02-2012 om 07:01 geschreven door annazhao356  

According to the China Construction Machinery Business survey, 26 of the main manufacturers of excavators in China sold 8868 units in September, 23.86% down. Excavator cumulative increase since February of this year climbed to the highest point, it has been declining for several months. China Construction Machinery Industry Association has predicted the next five years, the construction machinery industry is expected to be 17% annual growth. But now the growth target is being challenged. Growth in the second quarter of this year began the rapid decline in construction machinery industry had still not out of the signs down, the industry growth is still in the 'bottom.' Affected after construction machinery enterprises are expanding production capacity is becoming excess capacity.

Excavator sales decline in a row is typical of China's construction machinery industry reflected. According to industry experts say, since the second quarter this year, sales of construction machinery industry continued to decline, this phenomenon has not been checked in the third quarter. Zoomlion Chairman Zhan Chun new that the growth rate of decline in construction machinery industry, there have been signs of late last year, the first quarter of this year, industry unexpectedly explosive growth has actually overdrawn market demand, sales of construction machinery starting from the second quarter, a marked decline in . Railway construction slowdown, real estate is the construction machinery industry sales for the decline. Data show that the Ministry of Railways to complete the first nine months of capital construction investment 346.879 billion yuan, down 19.3%. National Railway in the third quarter ended investment for years the Great Leap Forward.

Data also shows that the first three quarters this year, China's fixed asset investment up 24.9% nominal growth (after deducting price factors, the actual increase of 16.9%), down 0.7 percentage points over the first half, shrinking demand for construction machinery industry downstream. Industry sales is to continue to decline or rebound in the fourth quarter? At the recent 2011 Global Construction Machinery Industry 50 Conference and Summit, insiders believe that the fourth quarter of this year may have tail phenomenon. However, many industry experts believe that the macroeconomic policies remain unchanged, the construction machinery industry will be difficult to return to the past growth rate. Institute of Finance, the State Council Development Research Center, Xia Bin, director on the warning, do not use the past to simulate the growth rate is derived future growth, construction machinery industry is facing the future development of more uncertainty.

In the industry under the background of slowing demand, the domestic construction machinery industry excess capacity problem increasingly prominent. And 'excess capacity' has become the focus of engineering machinery industry conference topics. ZhanChunXin the truth, construction machinery industry excess capacity are triggering industry malignant competition. Xugong group President and general manager of the rabbit liugong zeng pins identity construction machinery has appeared excess capacity. However, they think, industry excess capacity is the low end products of the excess, in high-end products field still have space. Four trillion yuan investment by pulling, engineering machinery industry become fast development, the related businesses expand the capacity to increase investment. A shares the main engineering machinery listed companies have or are almost through shares expand the capacity of financing. International experts will China enterprise overcapacity called it 'assembly excess capacity'. In order to deal with excess capacity bring industry competition, some large engineering machinery enterprise is calling on industry management department to make the industry standard, to regulate the market competition.

09-02-2012 om 06:59 geschreven door annazhao356  

The construction sector is in an interesting phase of its evolution, not quite yet global in nature, but with some players active in more than one national market and the largest players becoming involved in multiple projects in Europe, North America, and Asia, particularly China. The sector includes companies from the smallest to the largest. At the bottom of the scale are small house-builders, followed at the mid-range by regional and national companies capable of handling multiple projects within one country, to larger players with specialist interests, for example, in shopping mall construction, or office blocks, operating in multiple countries. The industry has a clear overlap with civil engineering on infrastructure projects, particularly where groundworks and ground preparation for site construction are concerned.

The building materials sector is extremely diverse and constitutes a sizeable chunk of the industrial base of developed countries. It includes a highly diverse range of suppliers, from cement manufacturers (an area that is under tremendous pressure to both innovate and to “green up”), to specialty glass and steel manufacturers, as well as providing a large market to white goods manufacturers, furniture manufacturers, paint and wiring manufacturers, and a host of other related industries. According to some specialists, buliding material industry made great progress which brings new demand for mining machinery industry.

China's social scene of terrible 'class compaction' phenomenon. To put it bluntly, that is, a poor kid in today's society, through their own hard work, the success of the rich squeezed into the ranks of fewer and fewer opportunities than before. Only two categories of people in society: the poor and the rich. M based society, the impact on the real estate market is faced with the poor, the rich small family and face the 'luxury' will be hot. Of home building materials industry of the enterprises, located at two ends: the low end and high end brands and enterprises will live more moisture. Without an awkward position of 'the end' corporate and brand will live the worst, there might even be closed collapse.

Home and buildings designers and planners have to think about both materials and the building regulations that are likely to appear in a world dominated by calls for action to cut carbon emissions. Current building requirements are likely to be amended further, almost year on year, to minimize the impact of the built environment on the planet, which means cutting emissions and energy usage. We are at the dawn of “smart” buildings, which react both to energy usage and to the needs of occupants, but many leading architects and designers are already thinking about zero-emissions buildings, or massively taller buildings, or buildings that are themselves virtual “cities”—all concepts that will provide a fertile ground for innovation in building materials.

For further development, we must grasp the challenge to make innovation, do research and step into the road of Green Industry.

09-02-2012 om 06:59 geschreven door annazhao356  

In recent years, low carbon and green has become an important trend in the development of the world, and this pure and fresh wind blowing in the will push green manufacturing to drive the science and technology innovation of the whole industry towards a brand new area and goes up for an unprecedented level. Some countries in the current world are building their green fortress by way of environmental protection, so green manufacturing is obviously a trend that accords with the development trend of modern economy.

More businesses are turning to green cleaning services over traditional chemical cleaning services. Read on to determine if green cleaning is right for your business and find out how green cleaning holds up to traditional methods. When you use chemical cleaning products regularly, you often forget how dangerous they are. By using chemical cleaning products, you are not only harming the environment, but also your health.

Several cleaning products are classified as ‘corrosive’. These are the chemicals that cause damage to organic material, particularly human flesh. When cleaning, you are using chemicals to clean away the dirt and grime. The more effective a chemical is in cleaning away dirt, the more damaging it will be to your skin. If it accidentally splashes in your eyes, it will do even more damage.

No matter how safely you use chemicals, how they are stored and how well we stick to the manufacturers’ guidelines, the reality is they still affect our environment. Many people release chemicals into storm drains, meant for removing excess water after a downpour. This has an extremely negative impact on our environment. Several cleaners release pollutants in the air, and the poisonous effect of these pollutants severely harms animal and plant life.

The only way to fight against polluting the environment is to seek safer alternatives for cleaning commercial facilities. Choosing products that have environmental attributes such as biodegradability, low toxicity, low volatile organic compound (VOC) content, and low life cycle energy use will minimize the effect on our atmosphere. It will help improve air quality and reduce water pollution, thus making our quality of life better.

Now mining machinery and equipment enterprise to pay more and more attention to the high efficiency, energy saving environmental protection equipment research and development and production. For example, mining machinery the short-lived, low energy consumption and reduce the life of the weight of the design principles.Jaw crusher supplier In practical production using low environment load materials, as far as possible, do not use freon,Jaw crusher supplier chlorine rubber, resin and asbestos and other harmful material. Parts of the waste treatment and minimize pollution comprehensive cost optimization, mining machinery products in initial stage design to consider scrapping a low cost and simple processing, less pollution, spare parts to collapse convenient, broken easy,Flotation cells can burn disposal or can be used as fuel recycling, etc. Use of renewable materials and resources, such as promoting the fuel cell mining machinery and geothermal resources mining technology and equipment.

The widespread popularity of green cleaning products with environmental agencies indicates that these are effective. Agencies such as EcoLogo and Green Seal certify products for efficiency, in addition to their health and environmental benefit. As for the costs, prices of green products have come down steadily in recent years. Moreover, usage of green products offers some ancillary benefits as well. Insurance companies may lower the premium for enterprises using green cleaning products. Recent studies also indicate that the use of these products boosts productivity.

China has been listed as a mining machinery production country, consumption and importing country, but it is big not strong. Based on the current situation, China manufacturing enterprises should further deepen the reform, actively adjust the industrial structure and products, transform the economic growth mode, enhance the ability of independent innovation, speed up the research and development and market expansion of high-end mining devices, mineral processing equipment, crusher equipment and the key parts, further improve product quality and strengthen the service consciousness, improve the comprehensive competitiveness of the industry, insist to green innovation avenue, only by which can they realize sustainable development of good and fast and finish the goal from big to strong.

09-02-2012 om 06:58 geschreven door annazhao356  

The hammer crusher is one of the main equipment for intermediate and fine crushing the brittle materials with less than intermediate such as limestone coal and other used in metallurgy, building material, chemical and water - power industry, with a feature of big crushing ratio and even product graininess. The hammer crusher (hammer mill) crushes by the collisions between high-speed hammer and materials, and the hammer crusher (hammer mill) features are in its simple structure, high reduction ration, high efficiency, etc. The PC hammer crusher(hammer mill) were developed for both dry and wet crushing of brittle, medium-hard materials for the mining, cement, coal, metallurgic, construction material, road building, and petroleum & chemical industries.

Although the sales performance of mining machinery and equipment has slowed down in this winter,the sales of hammer crusher continues the trend of rising.Our science and technology workers told us that we should attach more importance to the welding process of hammer crusher to ensure high quality and good quality crusheing equipment.Hammer Crusher is the quality of engineering one of the most commonly used crushing equipment. It is mainly the impact of high-speed rotation of the hammer the ore to make it along a natural fracture, bedding plane and joint planes and other vulnerable segments of the broken. Whether the material hammer, or have a direct impact on the quality of the hammer crusher hammer crushing effect, productivity and service life performance, so the hammer crusher hammer and quality of material has a very important practical significance.

Our crusher hamemrs have a service life longer than those made of common high manganese steel and is safer to use. Crusher hammers aim at the crushing of limestone with abnormal content of SiO2. Crusher Hammers can be used in hard condition of serious abrasion.

Hammer Head Features

1. Crusher hammers casted the Tungsten Titanium alloy in the high-manganese steel substrate,It may resist the severe grinding abrasion.

2. Crusher hammers service life has been enhanced by 50% compared to the ordinary high-manganese steel!

3. Compared to the similar products, “big gold tooth” crusher hammers have the advantage strong wear resistance and low price.

Hammer Head Application

1. Super High Manganese Hammer head is made of HXJQ.

2. The Super High Manganese Hammer head can be used in hard condition of serious abrasion.

3. Crush limestone with abnormal content of SiO2 Super High Manganese hammer head.

09-02-2012 om 06:58 geschreven door annazhao356  

The improper operation of belt conveyor will cause accident, even cause casualties sometimes. So safety operation and analyse the reason of belt conveyor accident are important for workers and operators.

1. Belt conveyor deviation accident is one common fault. The reason that caused belt deviation are: the blanking material position is deflected and impacted, belt tension bridle and bearing roller device are misused, the transportation distance is too long. This belt conveyor accident can cause belt avulsion, material loss and production halts, even stop operation finally.

2. Machinery accident. If this kind of belt conveyor accident can be find timely, the equipment will be damaged seriously, the maintenance and repair time will be longer, the effect on production is bigger.

3. Personnel accident. Belt conveyor accident can cause casualty, so it is necessary to deal with belt joint before operation, process the joint when lengthening or shortening belt conveyor.

The production belt conveyor plant in hxjq has the features of large conveying capacity, transmission distance is long, smooth transportation, materials and conveyor without relative motion, the noise is small, simple structure, easy maintenance, less energy consumption. The daily maintenance of belt conveyor plant is important, it influent the normal operation if any problem not be found timely.

The belt conveyor plant in the course of work should be looked after. Custody must be the one has general technical knowledge and is familiar with the performance of the conveyor machine. Belt conveyor plant should be uniformly fed, not feeding too much and make the conveyor filled with material and cause overflow.

In the working process of the belt conveyor plant, non-custody staff should not be near machine. Any person shall not touch the rotating parts of belt conveyor plant. When failure occurs, the operators must immediately stop the machine to eliminate failure. The belt conveyor plant should keep normal lubrication and replace individual damage parts in the course of operation, each for six months must overhaul. Replace the damage parts and change lubrication when check the belt conveyor machine.

HXJQ specialists based on years of research and development on high quality belt conveyor machine. All kinds of belt conveyor adopts special material to be produced. It is safer than ordinary belt machine.

08-02-2012 om 05:43 geschreven door annazhao356  

In 21st century, 'low-carbon economy' is becoming recognized by the countries as the economic development model, China is no exception, the rapid development of economy and deteriorating environmental damage has brought unprecedented challenges to China's sustainable development and construction, the Government has to increase environmental protection legal system, to improve the low carbon environmental policy and law, to promote the harmonious development of low-carbon economy. In mining machinery industry, roll crusher as one of the key equipment also should suitable for the concept of low-carbon economy.

The coal industry began to introduce high efficiency and energy saving roll crusher to respond to the government call on environmental protection. More and more industries began to pay attention to energy saving and environmental protection. This is a challenge for most crusher manufacturers. The low consumption and green roll crusher equipment is the tendency in the future. In order to meet the need of consumers and respond to environmental protection call, Hongxing produced series of roll crusher machine with low carbon energy saving, green and environmental friendly. The new type roll crusher is widely used in coal, cement, silicate and other industrial department. The roll crusher can be divided into plain roller and tooth surface roller. The former used for grind material with medium hardness, the latter used for crushing brittle and soft materials.

The Roller crusher can be classified into double roller crusher and four roller crusher according to the roller quantity. The Roller Crusher bears the features of stable operation, easy maintenance, low cost, output size adjustable. The Roller Crusher can be used in the processing of fragile materials in cement, metallurgy, chemical, power generation, coal industries.

Working Principle Of Roller Crusher:

Through the feed opening, the raw materials fall to between the two rollers, after crushed, the final products drop naturally. When there are unbreakable materials or the material is too hard, the roller will concede automatically under the effects of spring and hydraulic pressure, which will widen the clearance between the rollers and make the hard or unbreakable so as to avoid damaging the machine. The clearance between the two rollers can be adjusted to change the sizes of final products.

08-02-2012 om 05:43 geschreven door annazhao356  

Sand making machine (vertical shaft impact crusher) is the major equipment for producing manufactured sand. Hongxing Machinery sand making machine is applied to aggregate shaping and crushing for soft, medium hard and extra-hard; materials, and has the function of fine crushing and rough grinding. It is widely used in all kinds of ores, cement, fireproofing,silicon carbide, glass raw materials, building aggregate, manufactured sand etc.

In the field of engineering, it is the ideal equipment for manufactured sand, bituminous concrete aggregate and cement concrete aggregate. In the field of mining, it is widely used in grinding forepart craft, and produces a mass of ore fines, thus reduces the high cost of grinding load. Hongxing Machinery supplies the sand making machine for the largest civil manufactured production line. The high quality aggregate which is produced by Hongxing Machinery has been used in the national heavy construction. Its superior quality aggregate is used in the concrete mixing plant of Beijing Urban Construction Group, the National Grand theater etc.

Additionally, with the recovery of global economy, the export of crusher industry is also promoted, so the whole situation of engineering machinery industry develops excellently. Relying on this good situation, Hongxing Machinery crushing and screening equipments show striking achievements in domestic market in the first half of the year. Otherwise, it also launches successfully lots of new products and improved products, and then fills the national technology vacancy such as SMH hydraulic cone crusher, crawler-type crushing and screening plant, portable crushing and screening plant etc.

Faced with competitive business day by day, Hongxing Machinery devotes itself to long-term development, and insists on the idea of technical innovation, takes on the responsibility for creating a world-class brand in the crushing and screening industry. Hongxing Machinery has finished the new technology reform until now. On the basis of insuring the high reliability of products, Hongxing Machinery insists on the development from customers’ actual demands, and designs the crusher with more reasonable and economic. Thus the products for customers can reach the lowest loss, the highest quality and performance, and the best benefits.

08-02-2012 om 05:43 geschreven door annazhao356  

There is a specific operating speed for most efficient grinding. At a certain point, controlled by the Mill speed, the load nearest the wall of the cylinder breaks free and it is so quickly followed by other sections in the top curves as to form a cascading, sliding stream containing several layers of balls separated by material of varying thickness. The top layers in the stream travel at a faster speed than the lower layers thus causing a grinding action between them. There is also some action caused by the gyration of individual balls or pebbles and secondary movements having the nature of rubbing or rolling contacts occur inside the main contact line. A ball mill, a type of grinder, is a cylindrical device used in grinding (or mixing) materials like ores, chemicals, ceramic raw materials and paints.

For the most efficient results, the Mill should be at least half filled with grinding media. Some operators prefer to go a little beyond the halfway mark to compensate for wear. There is no objection to this and we have been suggesting a limit of about 5 percent.

Cement ball mill rotate around a horizontal axis, partially filled with the material to be ground plus the grinding medium. Different materials are used as media, including ceramic balls, flint pebbles and stainless steel balls. An internal cascading effect reduces the material to a fine powder. Industrial ball mills can operate continuously, fed at one end and discharged at the other end. Large to medium-sized ball mills are mechanically rotated on their axis, but small ones normally consist of a cylindrical capped container that sits on two drive shafts (pulleys and belts are used to transmit rotary motion). A rock tumbler functions on the same principle. Ball mill manufacturers are also used in pyrotechnics and the manufacture of black powder, but cannot be used in the preparation of some pyrotechnic mixtures such as flash powder because of their sensitivity to impact. High-quality ball mills are potentially expensive and can grind mixture particles to as small as 5 nm, enormously increasing surface area and reaction rates. The grinding works on the principle of critical speed. The critical speed can be understood as that speed after which the steel balls (which are responsible for the grinding of particles) start rotating along the direction of the cylindrical device; thus causing no further grinding.

The grinding efficiency of the one-half charge is considerably greater than for the one-third and, therefore it ca be expected that power consumption per gallon output will actually be less than with the smaller charge.

Grinding media should be periodically checked. Reduction in the quantity and size of the grinding media will result in poor grinding. We suggest a maximum schedule of once every six months, but any established procedure should be decided by individual experience. In some cases, where abrasive materials are involved, once a month is not too often and, in a few cases, even shorter intervals are indicated.

The ball mill is a key piece of equipment for grinding crushed materials, and it is widely used in production lines for powders such as cement, silicates, refractory material, fertilizer, glass ceramics, etc. as well as for ore dressing of both ferrous non-ferrous metals. The ball mill can grind various ores and other materials either wet or dry. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. There are many wet ball mill suitable for use in a ball mill, each material having its own specific properties and advantages. Key properties of grinding media are size, density, hardness, and composition.

Aside from common ball mills there is a second type of ball mill called Planetary Ball Mill. Planetary ball mills are smaller than common ball mills and mainly used in laboratories for grinding sample material down to very small sizes. A used ball mills consists of at least one grinding jar which is arranged eccentrically on a so-called sun wheel. The direction of movement of the sun wheel is opposite to that of the grinding jars (ratio: 1:-2 or 1:-1 or else). The grinding balls in the grinding jars are subjected to superimposed rotational movements, the so-called Coriolis forces. The difference in speeds between the balls and grinding jars produces an interaction between frictional and impact forces, which releases high dynamic energies. The interplay between these forces produces the high and very effective degree of size reduction of the planetary ball mill.

08-02-2012 om 05:43 geschreven door annazhao356  

Since China joined with international standards organization since the domestic industries manufacturing level have been significantly improved, and constantly introduce foreign advanced technology, continuously expanding their own production technology and production capacity, make us China in the international manufacturing market stood in a important position, but since a long time ago the countries all over the world will know that we Chinese the most abundant mineral resources is a piece of fat meat, so after accession to the wto, foreign mining machinery manufacturer also is constantly the march of our market. Long ago China to world impression is the low level of manufacturing industry representatives, as long as it is to buy low quality, low price of machinery and electrical equipment and the first thought is China, in fact, with the progress of The Times, China is slowly to show the world his change his manufacturing level to rise.

But we native brand enterprise, in the price of dominance without today, also is stepping up after multinational company. However, compared with the multinational companies, local brand enterprise existing research and development power still show is weak, product research and development is not satisfactory. From the general situation in look, about half of the research and development organizations can't play their due role. The earliest established institute for example, its research and development personnel are now but dozens of people.

In recent years, our country mining machinery industry cluster has formed certain scale, small and medium-sized mining machinery exports have accounted for a third of the shares. In order to deal with foreign enterprise, henan and machinery to prepare the next two years will will establish research and development center base, and committed to domestic crusher, milling machine, the sand machine the equipment and so on theory and engineering application. At the same time, extensive domestic high-tech talent together, and the international first-class research and development means, to boost domestic mineral machine core competitiveness of the products.

08-02-2012 om 05:42 geschreven door annazhao356  

Cement plant is usually located closely either to hot spots in the market or to areas with sufficient quantities of raw materials. The aim is to keep transportation costs low. Basic constituents for cement (limestone and clay) are taken from quarries in these areas.

Cement ball mill is also named natural material mill, material grinding mill and clinker mill, is key equipment for grinding following the concrete crush process, which can be trusted in the manufacture industries, including cement, silicate, new building materials, refractory material, fertilizer, ferrous metal, nonferrous steel and glass ceramics, etc. Cement ball mill may be used for the dry and wet grinding for all kinds of ores as well as other grind-able materials. Based on different materials and discharging methods, there are dried up cement ball mill and wet ball mills for option.

Cement Manufacturing Process

1). The dry cement process consists of many simultaneous and continuous operations using some of the largest moving machinery in manufacturing. Over 5000 sensors and 50 computers allow the entire operation to be controlled by a single operator from a central control room.

2). The limestone is combined with clay, ground in a crusher and fed into the additive silos. Sand, iron and bottom ash are then combined with the limestone and clay in a carefully controlled mixture which is ground into a fine powder in a 2000 hp roller mill.

3). Next, the fine powder is heated as it passes through the Pre-Heater Tower into a large kiln, which is over half the length of a football field and 4.2 metres in diameter. In the kiln, the powder is heated to 1500 degrees Celsius. This creates a new product, called clinker, which resembles pellets about the size of marbles.

4). The clinker is combined with small amounts of gypsum processing, limestone and finely ground in a finishing mill. The mill is a large revolving cylinder containing 250 tonnes of steel balls that is driven by a 4000 hp motor. The finished cement is ground so fine that it can pass through a sieve that will hold water.

5). The cement mill process begins when limestone, the basic raw material used to make cement, is transported by rail to the Edmonton plant from the Cadomin limestone quarry 220 kilometres west of Edmonton.

08-02-2012 om 05:42 geschreven door annazhao356  

China mining machinery industry is that there are two aspects: First, the overall strength of the mining machinery industry is not strong, the majority of enterprises in scientific research, new product development, technological innovation and business management, energy and capital investment are at a standstill. Varieties of domestic mining machinery products, especially the key to nation-building much-needed equipment can not meet the requirements, and there is a low-tech products, value-added products is not high, unstable product quality, labor productivity is low and so on. Resulting in China's mining machinery manufacturing enterprises, which produced growth and profit growth did not match. Second , product variety, technology, quality, service, etc. problems, led to the mining machinery industry, the actual contribution of the mining rate. The metallurgical and mining, for example, currently there are 1180 kinds of equipment used in China to only 26 percent self-sufficiency, and most low-tech and quality is less demanding equipment, and the remaining 74% still need to import. Domestic high-tech equipment, particularly mobile devices, such as TBM, mining vehicles, excavators, scrapers, etc., and there is a large gap between the imported equipment.

To this end, the experts proposed to increase the mining machinery industry innovation approach: First, the mining machinery manufacturing industry should be taken with foreign companies and professional design institutes to establish different forms of joint, including the formation of groups, unions, the introduction of technology, introduction of talents, at least to fight in a joint project on the design approach, the first intervention and then increase, so win-win situation.

Second, establish and improve the advantages of professional applications laboratory, product, manufacturing process of applied technology research. Laboratory should be a high start, based on the practical; including test theory and methods, test equipment and scale, and control and detection technology, if necessary, should be the introduction of foreign advanced technology.

In addition, domestic and foreign institutions of higher learning, not only the mining machinery technology talent base, and mining machinery is the basic theory and experimental research of the origin, must use its power, and they take different forms of joint cooperation.

Henan Hongxing has been mining for mining machinery industry leadership and core of the company with a strong power and capital, expanding the company's R & D team and high-tech talent, achievements and constantly developed new products, For example, MTW European ladder mill, LM vertical milling machine, PFW European version of the crusher, JC European version jaw crusher , 5X new sand making machine , mobile crushing machine, tracked crushing, MTM medium speed trapezium mill, S superfine powder mill, CS hydraulic Cone Crusher, HPC efficient cone crusher, etc., these products are given the birth of the company leadership to the base of each employee's hard work and wisdom, and has been widely used in mining, electricity, water, construction, chemical, grinding, crushing and other fields, whether it is barite, limestone, granite, basalt, or pebbles, etc. all of its grinding, crushing to the high-rise buildings can be widely used in national , highway, railway construction, bridges, dam maintenance and other aspects, is silently to pay a country's prosperity and contribute to.

08-02-2012 om 05:42 geschreven door annazhao356  

Clay is a naturally occurring aluminium silicate composed primarily of fine-grained minerals. Clay deposits are mostly composed of clay minerals, a subtype of phyllosilicate minerals, which impart plasticity and harden when fired or dried; they also may contain variable amounts of water trapped in the mineral structure by polar attraction. Clay layers in a construction site.

Dry clay is normally much more stable than sand with regard to excavations.So We need clay grinder for caly grinding. When you need clay less than 0.075 mm. We can provide you the clay vertical roller mill or clay super thin mill for the producting process. We have another efficiently production line for get clay powder. First we use the clay roller ball mill for the caly grinder process. The clay powder can grinding into 0.074~0.4mm.Then we use the clay super thin grinder mill for get the more less than 0.075 mm clay powder. This scheme can improve the production capacity.

The clay grinder have the production capacity from 10t/day to 500t/day. The more less the production capacity you need the more fine clay powder will be. Clay Supper thin mill On the bases of our company 's 15-product experience. Try on 12 kinds of grinder mill and horizontal crusher, clay super thin mill with high efficiency and finished size can reach to d97≤5μm. clay Ball grinder mill Clay Ball grinder mill can work alone as the second fine grinding mill. It is efficient pulverizer medium particle harden ore ,such as clay,talc, iorn ore,marble,limstone, calcium carbonate.

08-02-2012 om 05:41 geschreven door annazhao356  

Clay is a naturally occurring aluminium silicate composed primarily of fine-grained minerals. Clay deposits are mostly composed of clay minerals, a subtype of phyllosilicate minerals, which impart plasticity and harden when fired or dried; they also may contain variable amounts of water trapped in the mineral structure by polar attraction. Clay layers in a construction site.

Dry clay is normally much more stable than sand with regard to excavations.So We need clay grinder for caly grinding. When you need clay less than 0.075 mm. We can provide you the clay vertical roller mill or clay super thin mill for the producting process. We have another efficiently production line for get clay powder. First we use the clay roller ball mill for the caly grinder process. The clay powder can grinding into 0.074~0.4mm.Then we use the clay super thin grinder mill for get the more less than 0.075 mm clay powder. This scheme can improve the production capacity.

The clay grinder have the production capacity from 10t/day to 500t/day. The more less the production capacity you need the more fine clay powder will be. Clay Supper thin mill On the bases of our company 's 15-product experience. Try on 12 kinds of grinder mill and horizontal crusher, clay super thin mill with high efficiency and finished size can reach to d97≤5μm. clay Ball grinder mill Clay Ball grinder mill can work alone as the second fine grinding mill. It is efficient pulverizer medium particle harden ore ,such as clay,talc, iorn ore,marble,limstone, calcium carbonate.

08-02-2012 om 05:41 geschreven door annazhao356  

The manganese ore mining process is complicated process and need many manganese mining equipments. Through the mining process manganese boulders are turned into all sizes of materials and manganese ore extract process by jig and manganese drill.The blasting process is the first step determining what needs to be accomplished next. Rock hammers, drop balls, primary crushers, and gyratory crushers all contribute to the manganese mining process. Coarse materials are sent by belt conveyer to the manganese crushing plant or manganese grinding plant for crushing, grinding and screening for sorting manganese ore. The mine stockpiles different sizes of manganese materials for oure customers in South Africa,Austrilia, Ukraine,India, China, Ghana ,Brazil.

Manganese crushing plant: The first step of getting manganese is crushing in manganese ore processing plant. So the manganese ore crusher is very important mining equipment in manganese ore processing plant. The complete manganese crushing plant consist of jaw crusher as primary crusher, cone crusher as fine crusher, and vibrating screen crushing and screening out suitable manganese ore. Grinding mill used as manganese grinding machine, ball mill are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits. According to the need of customers, ball mill can be either wet or dry designs. These mills are sized from 2 t/h to 30 TPH for wet grinding and from 0.5 t/h to 30 TPH for dry grinding, used as manganese grinding mill machine.

In the manganese processing plant we supply manganese drill, manganese jigger machine for manganese mining process; Jaw crusher, cone crusehr, belt conveyor, screen in manganese crushing process; Ball mill, grinding mill , super thin mill, raymond mill in manganese grinding process; Flotation equipments, magnetic separation equipments for manganese in beneficiation plant manganese process; We have the manganese mine expert for design the manganese processing machine used in manganese processing plant.

08-02-2012 om 05:40 geschreven door annazhao356  

Gravel equipment mainly refers to the jaw crusher machine, stone-breaking counter-type machine, cone crusher stone machine, impact crusher , sand making machine, vibrating screen, feeder and stone milling machines and other equipment. In the widely used high-speed railway construction. Face of China's high-speed railway construction peak of the arrival of the market demand is particularly strong. However, due to high-speed railway construction, aggregate and concrete sand and gravel aggregate demand is relatively high, and to meet the needs of the industry with the production capacity of large companies at least a decade or more.

The sand production line, the impact crusher is the third working procedure, after mandibles crusher broken, then the material to counterattack crusher, once again after breaking up into customer 20 to 60 mm particles. The impact crusher is a use of impact energy to stave machinery. To ensure that the impact crusher, better in the sand in production line of continued operation, continue the service life of the impact crusher, users should be to counterattack crusher frequently maintain and maintenance.

In the new investment after the operation, the shift to counter must be broken for a full inspection. After a week on the run counter the motor lubrication, a full inspection. The content of the examination including fixed parts of the situation, tighten belt transmission, bearing seal, fight back foils, of lining board of the wear put a check of all maintenance cycle, and combined with a regular maintenance and replacement system.

The impact crusher rotor and counterattack of lining board of the nip-gap adjustment: when the impact crusher in the operation of the rotor, rotor and counterattack lining board between clearances can not be adjusted. Such as material into pieces stranded in counterattack plate and shell, suggest that in between adjustments to back up a little bit gaps between frames, so the feeding into pieces will become loose, counterattack frame easy adjustment. If counterattack frame, can relax enough in the bars on pat (with a board protection), and fight the rotor of lining board of the clearance of the machine by adjusting device to complete, first set, and then loosening bolts in turn long nut, at this time will be up in bars direction, to adjust to tighten the screw will set.

The impact crusher replacement parts: impact crusher replacement parts, the first open put on the shelf. When using, first will put on the shelf in the box with the connecting bolt, and then unloaded with wrench to flip device parts, and hex head slowly open shelves. At the same time, can use at the top of the frame hang a device for ransom. Repeat the process, namely close put on the shelf. The impact crusher plate hammer: counterattack broken plate hammer wear enough should adjust or replaced, in order to avoid the damage and other components fasteners.

The impact crusher line board: open the cover, dismantled after fixed fight back with the lining board split cotters, slot of nuts, bolts, can will wear the counter after lining board replacement.

Henan Hongxing Mining Machinery Co., Ltd. on the production of a number of mining gravel equipment PE jaw crusher, PF Impact crusher machine, stone-breaking counter-type machine, cone crusher stone machine, impact crusher machine (a new type sand making machine), and feeder, vibrating screen, sand washing machines and other equipment installed in the various provinces units wide highways and high-speed railway construction, is an essential national infrastructure equipment. For basalt broken, broken by the cone over the broken stone machine stone, stone-breaking machine after Impact (new sand making) Whole, the content can be reduced to stone-elongated 3-5%, compared with the crusher than can greatly improve the production capacity.

08-02-2012 om 05:39 geschreven door annazhao356