#### Benchmarking: Amelunxen SGI

ball mill power draw (sum of 2 mills, at motor input) = 1422 kW (at mill shell = 2 × 674 kW = 1348 kW) ball mill % solids = 83% weight (to achieve 1424 kW, assume 30% vol mill charge, 17 RPM) E bm at mill shell = 1348/210 = kWh/t; ball mill operating Wi O relative to motor input = kWh/t (= kWh/t relative to mill shell) Design ...