Project Case

Other Articles

What should be the RPM of a ball mill with a 45-inch diameter?

To determine the optimal RPM for a ball mill, you typically use the critical speed formula, which is:

Critical Speed (Nc)=76.6D

where (D) is the diameter of the mill in feet.

For a ball mill with a 45-inch diameter:

  1. Convert the diameter to feet: (45 \text{ inches} = 3.75 \text{ feet}).
  2. Plug this into the formula to find the critical speed:

Nc=76.63.7539.54RPM

The operating speed is typically between 65% and 75% of the critical speed: Optimal RPM=0.65×39.54=25.70RPM Optimal RPM=0.75×39.54=29.66RPM

Therefore, the optimal RPM should be between approximately 25.70 and 29.66 RPM.

Request A Quotation!