For the mining industry, the conventional ball milling can grind to a final product of 80 per cent passing 75 .. of the cyclone overflow and adjust the mill's power accordingly. . Case 1 secondary and regrind ball mills in copper zinc lead mine.
evaluate the efficiency of grinding circuit from differ ent aspects, one ball mill together . from the fresh feed to the mill, ball mill's discharge, hydrocy clone's overflow, . analysed in association with PSD, solid concen tration and copper assay.