... ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation ... of barrel brings the steel balls to a certain height and impact and grind the ... forGold, Silver, Tin, Columbium, Tantalum, Titanium, Barium, Tungsten, Iron, Chrome, Manganese, Zircon, Lead, Zinc, Mercury, Copper, Aluminum, etc. grinding mill