
Mar 07, 2019 Copper grinding process,ball mill machine for copper . ball mill for copper grinding processing. grinding ball mills . the ore would then flow into ball mills similar to the rod mills. steel balls inside the ball mills were about the size and weight of a shot put ball. these grinding mills rotated anywhere form 1 to 5 times per second. Ball Mill Rod Mill For Copper Oxide. Ball Mill An Overview Sciencedirect Topics. ball mills tumble iron or steel balls with the ore. the balls are initially 510 cm diameter but gradually wear away as grinding of the ore proceeds. the feed to ball mills is typically vol.-% ore and 25% steel. the ball mill is operated in closed circuit with a ...