#### ball mill jigs ball mills TRAIN VEDETTES

ball mill jigs ball mills Grinding time for ball mills Grinding amp Classification For ball milling you can assume a porosity of about 0 35 to 0 40 the volume of space between the balls and you can normally assume the pulp surface level is equal to the ball charge surface level So do a crash stop and measure the volumetric filling of the charge then multiply that volume by 0 35 or 0 40