Veiel mill (MPS type vertical roller mill grinding) can be coal, cement clinker and cement raw material. West Pufeifo company, a C Corporation in the United States and China Shenyang Heavy Machinery Factory all the production of the product, the Shenyang Heavy Machinery Factory production of MPS series vertical roller mill technical performance table table 3-2. Figure 3 a 3 MPS vertical roller mill structure. Its working principle is: three pneumatic hydraulic mill roll (a drum) pressure in the annular groove of the disc motor through a transmission system drives the grinding disc to a certain speed rotation (20 to 30 RPM). Because of the friction between the roller and the roller, the roller rotates around its own axis. By connecting the three tie rods at the corner of the triangle pressure bracket on the machine base, the roller is applied to the roller. By the feeding chute into the material (particle size of 80 ~ 100 mm), grinding to 80% through 200 mesh sieve of fine powder, the millstone around the annular air inlet communicated with the hot air blowing, the upper part of the powder selecting device selected and coarse grain fall disc re grinding, fine powder the exit row dust collection device to collect for the finished product. Mill wind speed up to 60 ~ 80 meters / sec, and drying efficiency is very high. Recently, MPs type vertical roller mill was not only used for grinding cement raw material, pat successfully cement clinker grinding. According to West Germany, a cement plant with a new improved MPS3750C vertical roller mill grinding cement clinker, production of PZ35 (DIN standard) cement, output reached 40 tons / PZ45 cement production, output up to 78 tons / hour. Power consumption of grinding 25 percent less than the ball milling and grinding fineness is easy to control, the grinding of cement has high early strength. According to Reid grams (a - E - RedeKer). MPs type vertical roller mill in the cement raw meal grinding time, and set the metal wear rate was 5.7 g / ton, grinding disc lining board wear rate of 1.2 grams / ton, the system maintenance cost is only 0. Fourteen 2 dollars / ton. MPs vertical roller mill grinding cement raw material output has reached 500 tons /, grinding standard cement production has reached 150 tons /. It is expected that this vertical mill has a trend to develop in the direction of large scale. Figure 4 - 3 is a schematic diagram of the MPS vertical roller mill grinding device. The MPS mill under the same grinding. The grinding disc diameter is flat grinding, which makes the millstone around more stomata and under a certain wind speed have a larger volume of air, the mill pressure drop is lower, so you can save the power of the fan. On the other hand, there is a good heat transfer between the material and the hot air because of the large amount of ventilation, the material and the hot air. Due to MPS vertical mill grinding roller of a drum shaped, the grinding disc is provided with annular groove, so in our country, also known as drum and a slotted disc type hydraulic vertical roller mill.

Because the vertical roller mill capacity will be affected by the factors of material hardness, moisture content, grain size, with a vertical roller mill will under no material showed unused production capacity. Similarly, the single machine capacity of 150 tons per hour of vertical roller mill opportunity due to the material properties of different sizes of different sizes. Our company is well-known domestic cement grinding, mine grinding integrated system manufacturers, supply production of various specifications of vertical roller mill products, with its series of vertical roller mill products as an example: Situation one: the material for slag, steel slag, nickel slag and other industrial waste That the single capacity at that time is 150 tons an hour of vertical roller mill, the model may be GRMS53.41, diameter of disc for 5.3 meters, power is 4200 kW. Case two: material for cement clinker Because the cement clinker is smaller, the vertical roller mill capacity is also increased. Then can have production production capacity of 150 tons of cement vertical mill is generally used in the GRMK46.41 cement vertical roller mill, grinding diameter is 4.6 meters. Power is 3350KW. Three: material is cement raw material When used for grinding cement raw material, will be more easily to the needs of the fineness of grinding. The 3.2 meter specifications of GRMR raw material vertical roller mill can meet the production needs of producing 150 tons of raw materials. Our company for many years of continuous innovation, with advanced technology, excellent quality of equipment, diversification of services, excellent team to win the trust of customers.

Cement grinding system mainly includes the four parts: raw meal grinding and coal grinding, grinding clinker and slag grinding grinding, has been, cement plants, the production of grinding by ball mill, high energy consumption and high pollution become endemic in many cement plants. With the development of industrial production technology, the new type of environmental protection, energy saving and high efficiency of the vertical roller mill is gradually introduced to promote the domestic cement plant. Xinxiang Great Wall Machinery Company decades working in cement vertical mill, coal vertical mill, slag vertical grinding, raw materials vertical grinding of R & D and production, technology maturity, has the hundreds of cement plants, steel mills, grinding station provides high performance vertical grinding equipment. Comparison of noise and noise of vertical roller mill: Ball mill noise pollution levels in general in more than 100 dB, and vertical roller mill out of the noise level is much lower than that of ball mill, generally within the range of 80 to 85 dB, good control of noise pollution. Dust and dust pollution in vertical roller mill: Ball mill in the production process inevitably produces a lot of dust, standing mill is set crushing, drying, grinding, grading conveying in one of the large grinding ideal equipment, with fully enclosed design, greatly reduce the dust emissions. Cement vertical mill noise and dust pollution is much lower than that of ball mill has obvious now, not only that, vertical roller mill also overcome the flaws in ball mill grinding mechanism, has the advantages of high grinding efficiency, low power consumption (than that of ball mill energy saving 20% to 30%), high drying capacity, allowed into the grinding of large size materials, grinding process is simple, covers an area of small, low construction cost, wear small, long life and other advantages, he will be greatly reduced power consumption costs, operating costs, the latter wear-resistant parts costs, construction costs etc.. If the cement plant in Hubei can be replaced by vertical mill, the result may be a big reversal.

With the country vigorously promote technological innovation and new dry cement design optimization, in order to meet market demand for cement, relying Anhui Conch Group Zongyang two 2500t / d clinker production line of domestic construction projects, in 2001 the successful development of the country has a advanced level of similar products MLS3626 vertical roller mill (hereinafter referred to as MLS3626 vertical roller mill). This is a top research and development results, fill the gaps in our large vertical roller mill, to achieve the country 2500t / d cement production line technology and equipment of a major breakthrough. This paper mill in respect of research and development work of a late presentation outline. (1) Determine the main parameters. According to the movement of materials with speed and strength in the grinding disc, the roller diameter, roller width, disc speed, material bed thickness, wind speed and other factors on disk grinding speed; studied mill grinding capacity and bake dry capability, and according to the material test results on MLS3626 vertical roller mill to determine the type and yield MLS3626 vertical roller mill, power consumption indicators (mill main motor power) and so on; determining an effective weight disc liner according wear indicators to ensure this two life of wearing parts are greater than 10000h. (2) optimization of the grinding mechanism design. Studied the effects of the disc, the curvature of the roller grinding capacity, unit power consumption, in order to determine the optimal grinding curvature. Large parts of the disc holder and pressure frameworks were the main bearing static analysis and calculation of structures under dynamic loads, optimize the framework of cross-sectional dimensions determine the pressure to find the disc holder stress equally conducive to optimum shape of the casting process, and fully consider the impact of thermal stress analysis of the research, the development of modular design and efficient classifier for MLS3626 vertical roller mill. Key consideration separator area portion control and particle motion, limiting the mill appear as irregular exercise, from the surface to reduce the cycle load, improve grinding efficiency. (3) the development of highly efficient combined classifier design. Based on the research and analysis of contemporary art and efficient modular separator (eg LVT separator, O-sepa separator, SEPOL separator, RAR separator, etc.), the development and design for efficient vertical roller mill MLS3626 combined classifier. Key consideration separator area portion control and particle motion, limiting the mill appear as irregular exercise, from the surface to reduce the cycle load, improve grinding efficiency. (4) optimizing mill maintenance equipment and other ancillary equipment design. The main disc, roller liner structure to achieve maintenance and replacement easy, shorten the maintenance cycle, improve equipment operation rate; designed with air lock features three gates, in order to ensure better continuity of feed and can be adapted relatively high material moisture requirements; design manual bypass machine has, beside the machine automatically controls the remote control and operation functions of the three electrical control systems.

Infrastructure construction is current the most important national economic construction, foundation construction vigorously, must promote the mine, building materials, cement, highways and other industries to carry out, the broken machine needs are also more and more big. First of all, in the application of the mine, the vast mining market will continue to develop the mine equipment continuously, thus increasing the market demand for the quarry crusher. Secondly, in the application of highway and railway, with highway construction planning, construction of cement and the infrastructure development inevitably stimulate crushing machine industry a new growth. Also, in the chemical and water conservancy and other aspects, the next few years will also maintain rapid growth, the demand for the quarry crusher will continue to grow rapidly. Continue to carry out the foundation of the construction will certainly promote the upgrading of the quarry crusher industry. At present, domestic quarry crusher machine industry update update frequency is higher, due to the short service life of the small crushing machine, so annual renewal of quarry crusher accounted for crushing machine needs about 20%, so there are still many quarry crusher in the overaged work. Together with the main use of mineral processing, construction and other industries of the two pieces of broken back type quarry crusher type missing, the standard is less, seriously affected the construction of road cement and other infrastructure. With the impact of foreign countries, how to improve the skills and quality of the quarry crusher, has become a major problem facing the quarry crusher industry. The replacement of the quarry crusher is inevitable, which will be a turning point for the development of quarry crusher. But it also gives us a wake-up call, the process of crushing machine, the improvement of the service life of the machine, it is extremely urgent. The increase of market demand, the upgrading of the broken equipment, has brought the opportunity to increase investment opportunities in the export market of the quarry crusher and the opportunity to diversify the investment opportunities in the enterprise. China has been a big country in the production of quarry crusher, in the next few years, due to some advantages of our products, breaking machine to enter the international market become an inevitable trend. Broken to achieve upgrading, adapt to the development trend of diversification and internationalization, we must improve the competitiveness. With the intelligent manufacturing equipment for the development of special guidelines for the implementation of "Notice of coming out, State Ministry for mechanical include security, a series of planning and looking forward to the monitoring, efficiency and other elements, fully embodies the national attention to the intelligent mechanical. Intelligent become the main development trend of quarry crusher.

(1) the mill ventilation: roller mill is a kind of air swept mill, ventilation should be appropriate. Insufficient air flow, qualified raw material can not be brought out, the material layer thickness, increase the amount of slag, equipment load is high, lower yields; wind is too large, the material layer is too thin, the impact of the mill stable operation. Therefore, the vertical roller mill ventilation must match the output, not when the big, sometimes small, should remain stable. In principle, the operator selects the ventilation rate, and should be more conducive to maintaining the mill load, whichever is relatively stable, and seeks minimal vibration, slag material at least, the highest yield and best quality. In actual operation, the operator based on trends fan speed, current, pressure, volume of feed, import and export of negative pressure, temperature and other variables, to understand the operation of the mill, combined mill vibration, slag volume, product quality and other adjustments, typically by adjusting the opening of the circulation fan speed and flap in order to achieve optimum ventilation. Under normal circumstances, the entire job stability, the various trends also show a smooth, once one of these variables change, and soon it will affect changes in other variables. At this point, to make timely adjustments, otherwise the situation could stop the mill vibration may occur. Some vibration stops entirely due to negligence or lack of experience, such as: reducing material diminished when the wind, feeding time without wind, etc., may cause abnormal changes in pressure, so that the mill out of control vibration stops. (2) the material layer thickness: vertical mill, another important factor is the stable operation of the bed stability. Material layer stability, wind, air pressure and volume of feed to stabilize, or we need to maintain the material thickness by adjusting the air volume and the volume of feed. If not it will lead to timely adjust the vibration intensifies, the electrical load to stop jumping up or system problems. Theoretically, the material layer thickness should be the diameter of the roller 2% ± 20mm, the vertical mill grinding roller diameter of 3000mm, so the 60 ± 20mm is suitable material thickness. This requires the operator to pay close attention to changes in the material layer trend, try to be controlled within the optimum range, in order to ensure stable operation of the mill. In addition, raw material thickness also depends on the particle size, grindability, particle size distribution, moisture content, etc. Initial operation, in order to find the best material thickness, have debugging gauge ring height. While in the ring height gauge certain conditions, one of the important conditions for a stable material thickness is feed particle size and particle size with the management. Feeding the average particle size is too small or too fine, thin material layer; average particle size is too large or too many chunks of material when the material layer will thicken, mill load increases. Can be controlled by adjusting the amount of water spray, grinding pressure, circulating air flow and separator speed and other parameters.

In recent years, China's mill industry in constant development, and mill equipment more and more in the unceasing progress, more and more types of mill,raymond mill is one of them, and its excellent performance has been the test of the market, now Raymond mill has been popular. Raymond mill and in the market with low price, high output, long life and other characteristics, has become the preferred object concentrator of many customers. Raymond mill is a kind of roller mill equipment, its grinding and grinding ring long time grinding material, the wear is very large, over a period of time, can lead to loss of the grinding and grinding ring damage, the gap between the fineness of the powder products not up to standard, processing of coarse powder is certain, but the fine powder is difficult, due to limitations of the hardware parts need to grind, eventually need to replace worn parts. The range of Raymond mill has broad processing ore materials, reduce the frequency of replacement parts, only need to adjust the spring can be easily achieved. Our company is the production of Raymond mill large professional manufacturers, has many years of production experience, crushing and grinding equipment performance production excellence, welcome customers to come to consult.