Vertical Roller Mill History

Vertical Roller Mill History

Vertical roller mill applied in China is in the late of 1940s. At that time, it mainly used for raw meal grinding of white cement factory. In 1950s, some small cement plants began to use the small vertical roller mill for grinding raw material, but also for the wet cement mill pulverized coal. In the late of 1970s, the dry process cement plant began to develop the decomposition of new dry process kiln in China, to pay more attention to the research and development work of vertical roller mill to grind raw materials.

At the beginning of 1980s, Tianjin Cement Research and Design Institute had developed the TRM series of vertical roller mill. Among, the TKM25 type mill was used for Henan Xinxiang cement factory 1000t/d new dry process production line. Its production capacity was 80t/h, and power consumption is 15.4KWh/t. Hefei cement industry design and Research Institute developed series of vertical roller mill. The capacity limitation is for 1000t/d production line.

At the same time, China began to introduce foreign large vertical roller mill for new dry process cement plant. According to statistics, the domestic imported more than 47 large vertical roller mills, which were supporting more than 2000 tons production line. In 1985, Shenyang heavy machinery plant introduced the MPS vertical roller mill manufacturing technology from Germany Pfeiffer company, which matched with the scale of production line of Nissan 2000 tons. Its products were used in Liulihe Cement Plant, and Wannian cement factory. After that, it collaborated with the Conch group to develop and manufacture the MPS3424, MPS5000 (MLS4531) vertical roller mill matched with 2500t/d, 5000t/d production line. At present, these products were used in Digang conch, Tongling conch and Chizhou conch. The MLS4531 vertical roller mill is the largest homemade vertical roller mill which has been put into use.

From the application and evolution of the international and domestic, the vertical roller mill is toward large-scale and super large-scale to develop, to adapt to the construction of large-scale dry process cement production line. The structure design is reasonable, and function is more perfect. Vertical roller mill, used in cement clinker, is successful examples. Technical content of vertical roller mill is higher than that of ball mill. It is a function strong machine, which integrated the mill, electric, instrument in one. Both requirements for operation or repair technology is more than the ball mill. vertical roller mill is needed to summarize and research in practice, to maximize economic benefits.