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critical speed equation of a ball mill Grinding Mill ChinaON THE CRITICAL SPEEDS OF THE TUMBLING A new theory of grinding in tumbling mills is suggested According to this theory the critical speed of ball mill is -ball mill critical speed equation-,Ball Mill Operating Speed Mechanical Operations The critical speed of ball mill is given by where R = radius of ball mill r = radius of ball For R = 1000 mm and r = 50 mm n c = 30 7 rpm …… Get more


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