clay grinding mills including ball mill, coal mill . clay grinding process for china clay powder making. sbm provide best clay grinding machine including ball mill, roller mill for china clay powder grinding. clay brick crusher and grinding mill - granite crushing plant.,ball mill size for grinding clay ore in india,calculate and select ball mill ball size for optimum grinding. calculate and select ball mill ball size for optimum grinding based on his work this formula can be derived for ball diameter sizing and selection dm 6 log dk d05 where d m the diameter of the singlesized balls in mmd the diameter of the largest chunks of ore in the mill feed in mm