### Maximizing Wear Resistance Of Balls For Grinding Of Coal

Sep 10 2007 the equipment is shown in fig 1it is a pilotplant ball mill with capacity to process 10 l of ore per batch the ball charge contains 132 kg of balls from 25 to 60mm diameter download download fullsize image fig 1 pilotplant ball mill coal charge 16 kg 10 l total ball charge 132 kg speed 31 rpm