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What''s the effect of running the SAG Mill at a speed less the 75% of the critical?
The critical speed of a SAG mill is the speed in RPM''s at which centrifugal force causes the material being ground to be held against the inside of.
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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 Mill Critical Speed Determination. The "Critical Speed" for a grinding mill is defined as the rotational speed ...
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