Ball Mill With Varspeed

The maximum power draw in ball mill is when ball bed is 35-40 % by volume in whole empty mill volume.Considering that ball bed has a porosity of 40 %, the actual ball volume is considered to be 21-24 % of the empty mill.Now, in order to get an efficient milling action, 80-110 % of the pores in the ball bed must be filled with the actual.