The output of vertical roller mill often throws out ungrinded crushed stones, and the amount is relatively large, which not only increases the power consumption of grinding materials, but also increases the labor intensity of personnel. So what is the reason for this phenomenon?

Due to the long-time operation of the mill, the steel ball is severely worn, the diameter is reduced, and the impact force is also reduced. When the ball in the vertical roller mill is not replenished in time, the output of the vertical roller mill is not enough.

Therefore, in order to maintain a certain ball filling coefficient and ball diameter, the qualified balls should be added to the vertical roller mill regularly according to the current of the vertical roller mill and the accumulated amount of grinding materials.