### Formula Of Calculating Rpm Of Ball Mill In India

Ball milloperating speed mechanical operations solvedthe critical speed ofball millis given by where r radius ofball millr radius of ball for r 1000 mm and r 50 mm n c 30 7rpmbut themillis operated at a speed of 15rpmtherefore themillis operated at 100 x 1530 7 48 86 of critical speed if 100 mm dia balls are replaced by 50 mm dia balls and the other conditions

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