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This 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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Mill Critical Speed Determination. The "Critical Speed" for a grinding mill is defined as the rotational speed where ... the formula used for Critical Speed is: N c ...
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THE OPTIMAL BALL DIAMETER IN A MILL Politechnika . The optimal ball diameter in a mill 331 In accordance with Eq. 2, the necessary condition for grain comminution is:
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