
feb 08, 2017 the operating principle of the ball mill consists of following steps. in a continuously operating ball mill, feed material fed through the central hole one of the caps into the drum and moves therealong, being exposed by grinding media. the material grinding occurs during impact falling grinding balls and abrasion the particles between the balls. then,,stainless steel grinding balls for mining ball mill,grinding balls for mining are generally used to break down secondary materials such as rock, cement and stone during the extraction of ores and metals. aisi steel grinding balls for ball mill applications typically have a tolerance of 0.05/0.10 and a density of 7.70 to 7.95. exceptions include al series 1xxx and al 6061 which have the same