The first vertical grinding mill was developed in Germany in the 1920s. Some people say that its grinding principle is similar to that of our ancestors. It uses the material bed grinding principle to grind materials and overcomes many defects in the grinding mechanism of the ball mill. The vertical grinding mill (vertical roller mill) produced by Shanghai Clirik has high grinding efficiency, low power consumption (20%~30% less electricity than ball mills), large drying capacity, large particle size of materials to be ground, and grinding process Simple, small area, low civil construction cost, low noise, low wear, long life, easy operation, etc.

After 90 years of development, the vertical grinding mill (vertical roller mill) technology has been very mature, especially since the 1960s, with the birth of the preheating and pre-decomposition technology and the large-scale new dry cement production line, the vertical grinding mill has been It has been widely used in foreign cement industry, and its technical level has been further improved and perfected. Many foreign companies have successively developed various types of vertical grinding mills and have achieved success. At present, the world's largest vertical grinding mill has a single output of 600t/h, which can be matched with a cement production line of 8000t/d to grind cement raw materials.

Just a few years ago, due to the changes in my country's cement industry industrial policy and the expansion of production scale, my country had to import dozens of raw material vertical grinding mills from abroad to match the 4000-6000t/d cement production line. So far, my country has developed the HGM vertical grinding mill (vertical mill) with independent intellectual property rights and successfully used in the grinding operations of raw meal, coal powder, slag and cement in the cement industry.