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Calculations: 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.

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A Ball Mill Critical Speed (actually ball, rod, AG or SAG) is the speed at which the centrifugal forces equal gravitational forces at the mill shell’s inside ...

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Mill Critical Speed Determination. ... Note this is not the width of a lifter! You may use the Mill Liner Effective Width calculation to determine this value.

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