### Ball Mill Designpower Calculation

Dec 12, the basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, bond work index, bulk density, specific.Feb 25, good figures for rod and bar mills are 90 % to 93 %, for structural mills, the good mill utilization figures are 75 % to 78 %. if a mill rolls 80 % of the calendar year, that is 365 x 24 x 0.80.