Vertical roller mill is the key equipment for crushing materials after crushing. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, and glass ceramics and other production industries, dry or wet grinding of various ores and other grindable materials.

Effectively controlling the grinding fineness of the vertical roller mill is an important factor that directly reduces costs and improves economic benefits. Understanding the factors that affect the fineness of vertical roller mill grinding is a necessary prerequisite for controlling the fineness of grinding.

Ore Hardness

Reasonable ore blending should be carried out in production, and the ore size should be as uniform as possible, and the lump and powder ore blending ratio should be reasonable and stable. In addition, at the vertical roller mill belt feeding place, the belt may leak ore due to prolonged wear. Most of the leaked ore is fine ore. This part of the leaked ore must be added to the vertical roller mill as soon as possible. If it is stacked for a long time and added intensively, it will cause uneven vertical roller milling and cause unstable production.