Grinding operation is a very important operation in the concentrator, that is, materials are crushed before crushing. Grinding equipment is an indispensable existence in the concentrator, which accounts for a large proportion of infrastructure investment.

According to statistics, the energy consumption of crushing and grinding operation in the concentrator accounts for about 65% ~ 75% of the total energy consumption of the concentrator, and steel consumption accounts for almost 100%, The cost accounts for 50% ~ 70% of the total cost of the concentrator.

Therefore, the correct selection of vertical roller mill to improve grinding efficiency has great economic benefits. There are many factors affecting grinding efficiency, which can be roughly summarized into two aspects: material and vertical roller mill.