Mineral Processing
· Tumbling mills Ball mill, Pebble mill, Rod mill, Autogenous / Semi autogenous mills. Tube mill. 89 84. 90 85. 91 A BALL MILL 86. 92 BALLS INSIDE A BALL MILL Balls range in size from 16 ". They are made of cast iron, forged steel or alloy steel. Larger balls help in coarse grinding . 87. 93 BALL MILLS ( 1876) .