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WhatsApp: +86 18838072829A ball mill operating in closed circuit with a 100mesh screen gives the screen analyses below. The ratio of the oversize to the undersize (product) stream is when 200 tons of galena are handled per day. The ball mill requires hp when running empty (with the balls but without galena) and hp when delivering 200 tons per day of ...
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WhatsApp: +86 18838072829Open Circuit Grinding. The object of this test was to determine the crushing efficiency of the ballmill when operating in open circuit. The conditions were as follows: Feed rate, variable from 3 to 18 T. per hr. Ball load, 28,000 lb. of 5, 4, 3, and 2½in. balls. Speed,
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WhatsApp: +86 18838072829Sl is the specific rate of breakage of size 1 material, fraction per unit time. If Sl is con stant with time, as the contents of the mill grind finer, eqn. (1) integrates to log w, (t) log w, (0) = S, t/ (2) This is referred to as the firstorder hypothesis of grinding. Plotting experimental values of wl (t) versus t on loglinear scales ...
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WhatsApp: +86 188380728291.. IntroductionA Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore. It was developed by Fred Bond in 1952 and modified in 1961 (JKMRC CO., 2006).This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling, for estimating the energy required for grinding, and for ball mill ...
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WhatsApp: +86 18838072829The proposed model, combined with a model giving the ballmill power draw, is used for the ballmill scale up. Comparisons with the Bond procedure showed a good agreement for the prediction of the ...
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