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2009-7-30 · TECHNICAL NOTES 8 GRINDING R. P. King. 8-2 &ROOLVLRQ 5ROOLQJ ZLWK QLSSLQJ steel balls in a ball mill, or large lumps of ore in an The effective length of the m ill is dependent on the load and is calculated from Le L 1 2.28Jt(1 Jt) Ld L

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