#### Size Reduction and Energy Requirement ScienceDirect

A complete screen analysis showed that the liberation size was 75 μm. Bond's grindability standard rod mill test showed a constant g per revolution. The ore had to be ground in wet rod mills at the rate of 2400 t/day. Estimate the work index if the . 1. internal diameter of rod mill was 2 m, 2. internal diameter of rod mill was 6 m, 3.