Ball Mill Calculations — cementequipment.org

Ball Mill Performance Calculations

Critical speed, filling degree, Bond's law specific energy, motor power, and production rate

Mill Dimensions

Mill Diameter (inside liners) mInternal diameter of the mill shell

Mill Length (m)Effective grinding length

Mill Speed (rpm)Operating rotation speed

Ball Charge Weight (tons)Total grinding media in the mill

Work Index Wi (kWh/t)Bond work index; 12-16 for clinker

Feed Rate (tph)Fresh feed to the mill circuit

Blaine (cm²/g)
% passing 90 μm

Blaine Fineness (cm²/g)Target specific surface