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Aug 2, 2013 ... I attach Fred Bond's first empirical equation for sizing grinding balls for ball mills as well as a few other links to good related articles on the topic.

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An investigation was conducted to determine the effect of the ball diameter sizes on ... 20% of the energy generated by the mill is utilized for actual grinding of the ore [2]. ... The diameter of the balls used in ball mills play a significant role in the...

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Jan 31, 2015 ... More balls with small size results in fine powder. As a thumb rule powder to be milled should be taken as 25% of total ball weight. If the quantity...

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Grinding is effected in 8 parallel lines of 8x5m ball mills in a closed circuit with cyclones. The make-up balls are 80-mm forged alloy steel balls and the average...

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A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering. It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from...

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The optimum composition of the make-up ball sizes in ball mills is presented. ... grinding model and investigate the effect of the make-up ball size on the mill ..... of ball charge, the number of balls in the mill decreases as the ball size increases.

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spherical balls change shape through breakage and wear. Though this ... grinding. Ball size distribution inside an industrial mill was analysed in terms of shapes...

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grinding quartz and copper ore in a laboratory ball mill, there has been ... grain size, it is necessary to have a definite number of the biggest balls in the charge,.

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The influence of the operating frequency, the milling ball and grinding stock filling degree, the material of the milling balls and beakers, the milling ball diameter...

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As a general principle, t h e proper size of the make-up grinding balls added to an operating mill is the size that will just break the largest feed particles.

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