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Bond Work Index Formula Equation Basic EquationsSize Distribution and Exposure RatioEquations For Work Index VariationsWork Index and Crack Energy The basic work index equation is W 10 Wi √P – 10 Wi √F 1 where W is the work input required in kilowatt hours per short ton to grind from 80 passing F microns to 80 passing P microns and Wi is the work index or the grinding resistance

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Bond work index procedure and method cleaning and storing of ball mill charge after the bond work index procedure is done add about 500 g of silica sand into the mill containing the ball charge seal the mill rotate for 20 revolutions to clean empty the mill charge and sand into the ball try once grinding is complete silica sand ball More Details

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