In actual production, the output of vertical roller mill is related to many factors, such as hardness of material, humidity, fineness of finished sand, maintenance of equipment and quality of itself, etc. Today, let's talk about the factors that affect the output of vertical roller mill. The hardness, viscosity and humidity of different materials are different, and the sand production of vertical roller mill is different. The details are as follows: The greater the viscosity of the material, the easier it is to adhere. The material with high viscosity will adhere to the inner wall of the sand making chamber in the vertical roller mill. If it can not be cleaned in time, it will seriously affect the work efficiency of the vertical roller mill and the normal work of the vertical roller mill. Therefore, in the selection of materials, we must pay attention to the viscosity of materials can not be too large.