## ball charge machine for mills - maitrefrederique.nl

Ball Mill - SlideShare Nov 18, 2008 · 4.2 The speed of the shell: The maximum speed avoiding centrifugal force, Where 4.3 Mass of balls The bulk volume of the balls is {30-45%} of the volume of the shell of the ball mill and the feed is filling the empty space between the balls where the static porosity is about 40%,and the balls charge is vary from 30-45% 5.