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We can calculate the steel charge volume of a ball or rod mill and express it as the % of the volume within the liners that is filled with grinding media. While the mill is stopped, the charge volume can be gotten by measuring the diameter inside the liners and the distance from the top of the charge to the top of the mill.

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Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in doing so reduced the time to replace them by 9 hours at a cost downtime saving of about U$25,000 per

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1 MODELING THE SPECIFIC GRINDING ENERGY AND BALL MILL SCALEUP K. G. Tsakalakis G.A. Stamboltzis NTUA Athens Greece E mail: [email protected] Presented at the conference IFAC 2004 held in September 2004 (Nancy France)

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Stirred Milling 3 The Stirred Media Detritor (SMD) is a fluidized, vertical stirred mill designed for optimum grinding efficiency for fine and

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contributes towards the ability of the mill to keep the grinding charge within the mill. The Southern African Institute of Mining and Metallurgy Platinum 2012

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