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peripheral speed of the mill is very high, it begins to act like a centrifuge and the balls do not fall back, but stay on the perimeter of the mill and that point is called the "Critical Speed‖ (McCabe et al., 1993). Ball mills usually operate at 65% to 75% of the critical speed and this is calculated as under. R

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In a ball mill of diameter 1200 mm, 60 mm diameter steel balls are being used for grinding at a speed of 20 rpm. Calculate the critical speed of the ball mill (rpm). 41.85 1.25 56.02 39.62 No, the answer is incorrect. Score 0 Rod mill produces _____ fines than ball mill. More Less Equal No relation

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Get Priceformula for critical speed of a ball mill. Ball Mill Critical Speed Mineral Processing Metallurgy 10 January, 2015 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 will fall from its position onto the shell.

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Get Pricecalculate critical speed of ball mill ugcnetnicin Ball Mill Critical Speed Mineral Processing 2018-11-10 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 shells inside,

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