Vertical roller mills (VRM) can replace ball mills or tube mills used for preparing coal. Today VRMs with capacities up to 50 tph are the dominant technology for coal grinding. According to MIIT, grinding media wear in a VRM will only be 5 to 10 g/ton of coal powder, as compared to 100 g/ton of coal powder in a ball mill.
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Get PriceThe power predictions for ball mills typically use the following form of the Bond equation: = (−) where E is the energy (kilowatthours per metric or short ton)
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