### Ball Mill Grinding Theory

Apr 28, first stage of ball milling. feed rate, 15.31 t. per hr. classifier, dorr duplex with baffled overflow. ball load, 28,000 lb. of 3- and 2-in. balls. speed, 23.8 r.p.m. ball-mill power, 108 kw. second stage of ball milling. feed rate, 6.54 t. per hr. classifier, dorr duplex. ball load, 28,000 lb. of 2- and 1-in. balls. speed, 23.8.