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Contact SupplierIn a ball mill of diameter 2000 mm, 100 mm dia steel balls are being used for grinding Presently, for the material being ground, the mill is run at 15 rpm At what speed will the mill have to be run if the 100 mm balls are replaced by 50 .

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Contact SupplierSAGMILLINGCOM : Mill Critical Speed Determination The "Critical Speed" for a grinding mill is defined as the rotational speed where This is the rotational speed where balls will not fall away from the mill's shell

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