... the diameter, the slower the rotation is. If the speed of the mill is too great, it begins to act ... point where the mill becomes a centrifuges is called the “critical speed”, and the ball mill usually operate at 65% to ... 75% of the critical speed.Ball mill is mainly composed of charging and discharging, cyclone ... -2628052.82200×75002133≤250.075-0.416-2947556 Ball miller