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The history of vertical roller mill

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PostPosted: Fri May 18, 2018 3:30 am    Post subject: The history of vertical roller mill Reply with quote

Limo was developed in Germany in the 1920s. Its pulverizing principle is similar to that of our ancestors grinding milled grain. It adopts material bed pulverizing principle to grind materials, overcomes many defects of ball mill grinding mechanism, and has high grinding efficiency and low power consumption (than the ball mill saves electricity. 20%~30%), large drying capacity, allow large particle size, simple grinding process, small footprint, low civil construction costs, low noise, low wear, long life, easy operation and so on.
After 90 years of development, vertical roller mill technology has been very mature. Especially since the 1960s, with the birth of preheating pre-decomposition technology and the enlargement of new dry process cement production lines, Limo has been widely used in foreign cement industry. Application, its technical level has been further improved and improved. Many foreign companies have successively developed various types of vertical roller mills and have achieved success. Germany Loesche company LM vertical roller mill, extraordinary company MPS vertical roller mill, Burley Hughes company RM vertical roller mill, Denmark Smith Atox mill, Japan's Ube company produced UB-LM vertical roller mill. At present, the world's largest single-mill vertical roller mill can reach 600t/h, and it can be used with 8000t/d clinker cement production line to supply grinding cement raw materials.
Just a few years ago, due to changes in China’s cement industry’s industrial policies and the expansion of production scale, China has also had to import dozens of raw materials from 4,000 to 6,000 t/d cement production lines abroad. So far, China has developed various types of vertical roller mills with independent intellectual property rights and successfully applied to the grinding of raw materials, pulverized coal, slag, and cement in the cement industry: SBM's LGM and LGMS vertical roller mills, Shenyang Heavy Machinery Group's MLS and MLK type vertical roller mill, LM vertical roller mill of Liming Heavy Industry Science and Technology Co., Ltd., HRM type vertical roller mill of Hefei Cement Research & Design Institute, TRM type vertical roller mill of Tianjin Cement Industry Design & Research Institute, Chengdu Building Materials Industrial Design The Institute's CDM vertical roller mill and ZGM series medium-speed roller mill coal in Beijing Electric Power Equipment Factory. CITIC Heavy Industries is the first domestic manufacturer of processing and manufacturing, OEM production, and is also the first domestic mill manufacturer to launch its own brand. Since CITIC Heavy Industries entered its own market in 2006, it has significantly lowered its foreign imports. The price of grinding has reached one-third of the total price, and the price of each vertical roller mill in foreign countries has dropped by more than ten million yuan. Now the CJRM vertical roller mill developed by our company is mainly used in the desulfurization of thermal power industry.
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