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Sep 05 2015 Calculate Top Ball Size of Grinding Media FRED C BOND Equation Method Although it was developed nearly 50 years ago Bond s method is still useful for calculating necessary mill sizes and power consumption for ball and rod mills This paper discusses the basic development of the Bond method the determination of the efficiency

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Oct 21 2020 Filling rate of grinding balls for this mill is 25 27 per cent of the total internal volume i.e approximately 13 15 tons of grinding balls The calculation of the average diameter of the grinding ball in the mill showed that it is necessary to use 23.74mm

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May 16 2011 In the images below we ll use a stepover equal to 1/10 1/5 and 1/3 of the tool diameter to show this correlation To put real numbers on this that would be equavalent to a .012 .025 and .042 stepover for a .125 ball mill.

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