The production status of high pressure roller mill at home and abroad.

At present, the world's main high pressure roller mill mechanism has three manufacturers. The manufacturer of domestic high pressure roller mill has zhengzhou shuguang, citic heavy industry and hefei cement research institute.

There is no fundamental difference between the three manufacturers in the structure design of high pressure roller mill. The difference is that the design concept is different. Pearl, hughes companies tend to have larger diameter than the long, is increasing the roll diameter and the practice of keeping smaller roll width (for example the present a product for its diameter is 2.4 m, 1.6 m), while the KHD and chief bourne company is using a smaller diameter than the long. The high diameter ratio of the roller mill has a large roll surface clearance, the product granularity is influenced by the edge effect, but the effect of the edge effect is relatively small. The low diameter ratio is higher than the peak pressure in the compression zone, so there are more fine particles. KHD roller surface using a company's patented registered post nail authigenic type lining board, nail embedded directly in the roller surface wear resistance, the average rockwell hardness is 65 ~ 67, roller surface wearability, long service life (generally more than 8500 h). Chief bourne company's roller surface through the development of powder metallurgy wear-resisting roller surface (patent) and the roller body, perfect the original weakness column screw is easy to break, difficult to repair, and have the ability to repair itself and in improving the roller surface strength and abrasion resistance at the same time, improve the operation efficiency and reduce the steel consumption.

The wide diameter ratio of the high pressure roller mill produced by zhengzhou shuguang is 0.3 ~ 0.8, and the large roller diameter is wide, which can quickly replace the modified studs and adopt roller side anti-wear technology. The high pressure roller of zhongxin heavy industry adopts high wear-resisting, composite and cemented carbide stud roller surface, which significantly improves the service life and operation efficiency of key components. The characteristics of the roll press of hefei cement research institute include constant pressure design concept and unique structure design, advanced roller cover structure and welding material technology to improve roller life.