The products includes five series: crusher, sand making machine, powder grinding mill, mineral processing equipment and building materials equipment.The theoretical critical speed of a ball mill is the speed at which the centrifugal force Read More. Effects of Ball Milling Conditions on Breakage Response of Baban The critical grinding speed (Vc) of a ball mill (in rpm) is given by 20 as: ). (. 3.42 speedore mass to ball mass ratioball size and grinding time of 10minutes..
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