The critical number of revolutions of various ball mills is proportional to the diameter D, and the absolute value of the critical number of revolutions is not easy to find. At present, only the formula for calculating the theoretical critical number of revolutions is widely used.
The formula for calculating the critical number of revolutions: n. =42.2/D1â„2 rpm
Where: D - the inner diameter of the ball mill. Meter
n. - critical number of revolutions
When a non-smooth lining is used, the ball filling filling rate is 40-50%, and the grinding concentration is large, the calculation result of the formula is relatively close to the actual one.
Breakfast Cereal Corn Flakes Machine
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