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7.4 mm milling ball

Jan 01, 2016· Example7.4. A 3.5 × 3.5 m wet overflowball millwas lined with 75mmrubber lining. 40% of themillvolume was loaded and themilloperated at 17.6 rpm. The diameters of the grinding balls were 70mm. Calculate: 1. the critical speed at which the balls will cease to cataract, 2. the optimum power consumption to operate themill. Solution

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