consumption in the grinding operation and wear rates. Vertical Roller Mill (VRM) The power used for the actual grinding process while grinding raw materials, depends mainly on the hardness of raw materials and the type of mill used, ball mill or vertical roller mill. Typically, the motor of the ball
Roller mill. With a roller mill, a product is compressed and reduced between two counterrotating rotating rollers. A major advantage of this process is that the proportion of fine particles (powders or dust) remains minimal compared to other grinding principles and that a nice homogeneous grainsize distribution is achievable.