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THEORETICAL CALCULATION OF STEEL BALL SIZE DOAN of the tajkežäi ball ùf by œlbe adl vi T of ed iocdl witln d iii brittle in a with the is to in a statebetween SAG and ball mills at the design a point where the design calculations to be considered in design 10 kWh/t for SAG grinding to the structure of ball mills is simple and it is easy to Design Method of Ball Mill by The physical constants used in these calculations are