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Suface Of The Ball In Ball Mill

It hasbeendelerminedtha a film of metalof udit thick- nes is worn from any sizball in a mill in the samesrind- ing time.If the weighl loss is periodically replaced as make-upbalh of sizea, th.Ball chaigereachesac equili- brium sizedisributioo which extendsdown to almost the ball sizedischargedfrom the mill.