ATTRITORS AND BALL MILLS HOW THEY WORK . The critical speed of a ball mill is calculated as 54.19 divided by the square root of the radius in feet.

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Get Price And Support OnlineA 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 surface and no balls will fall from its position onto the shell.

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Get Price And Support OnlineIn case peripheral speed of mill is very high, it acts like centrifuge where balls do not fall back and stay on perimeter of mill (this point is called "Critical Speed"- ball mills normally operate at 65% to 75% of critical speed)

Get Price And Support OnlineThe critical speed of a ball mill is the speed at which the balls just begin to cen- trifuge with the The critical speed nc is given by the equation n.

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Get Price And Support OnlineBall Mill Critical Speed - Mineral Processing & Metallurgy. 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 surface and no balls .

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Get Price And Support OnlineThis formula calculates the critical speed of any ball mill. Most ball mills operate most efficiently between 65% and 75% of their critical speed.

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