Abstract: Power consumption has become the major parameter to estimate whether the technology of grinding process is high efficient in cement production. It is widely accepted that under the field of centrifugal force, the grinding system can effectively decrease power consumption compared with the other systems. It is promising for popularization. The paper reviewed the progress of the ball mill and planetary mill grinding process dynamic equation and pointed out the necessity of the study on it.

Key words: cement;dynamic equation of the grinding system;power consumption