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· 4 High ball charge SAG mill or ROM Ball mill (15 to 25 ball charge) Low competency ore Hidden Valley Nzema Sepon UG2 ores (South Africa) Yanacocha 5 Low ball charge high speed SAG mill (4 ball charge 90 Nc) A cross between AG and SAG for average competency abrasive ores. Typically operated in RSA on Witwatersrand Gold Ore Driefontein

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Circulating Load Calculation Formula911 Metallurgist. Cytec Handbook. Why have a large circulation load . If a product all finer than a certain critical size is required the capacity of the ball mill is increased considerably by using it in closed circuit with a classifier and this increase is made still greater by increasing the circulating load in between the ball mill and the

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Circulating Load Of A Ball Mill With a circulating load of 250400 ballmills a kinetic model based on the rate of breakage of cumulative proportions of sies in the feed was chosen for its calculating circulating load ratio using sieve sie analysis calculate circulating load ball millBall Mill 88 . ball mill circulating loadMine Equipments

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· Ball Mill Circulating Load. Calculating a grinding circuit s circulating loads based on Screen Analysis of its slurries. Compared to Solids or Density based Circulating load equations a more precise method of determining grinding circuit tonnages uses the screen size distributions of the pulps instead of the dilution ratios.

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Calculating Circulating Load For The Ball Mill. calculation of circulating load of a grinding mill pdf circulating load calculation formula view larger image here is a formula that allows you to calculate the circulating load ratio around a ball mill and .calculating circulating load ball mill circulating load calculation formulahere is a formula that allows you to calculate the circulating

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The resulting model of the relative capacity of closed milling circuits as a function of circulating load and classification efficiency is described by Equation 2 (Magdalinovic 1991) 1 1 C1 1.5 C2 Q2 E2 KQ (2) Q1 1 1 C2 1.5 C1 E1 Where KQ relative capacity of the milling circuit (fraction) Q1 Q2 milling circuit capacity under different circulating load and classification efficiency C circulating load (fraction) E classification efficiency (fraction) Figure 1 Closed circuit ball mill

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calculate sag ball mill circulating load usa. Ball mill circulating load calculating a grinding circuits circulating loads based on screen analysis of its slurries compared to solids or density based circulating load equations a more precise method of determining grinding circuit tonnages uses the screen size distributions of the pulps instead of the dilution samples collected around the ball

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· 5 Low ball charge SAG mill high mill speed. (4 ball charge 90 Nc) A cross between AG and SAG for competent abrasive ores. As typically operated in RSA. 6 SAG mill (configurations 3 and 5 ) with recycle crusher Competent ores better suited to coarse grind sizes as circulating loads can be high 7 SAG mills treating partially or fully

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Circulating Load Calculation Formula 911 Metallurgist. Feb 21 2015 · For example your ball mill is in closed circuit with a set of cyclones The grinding mill receives crushed ore feed The pulp densities around your cyclone are sampled and known over an 8hour shift allowing to calculate corresponding to circulating load ratios and circulating load tonnage on tons/day or tons/hour

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Irrespective of the sampling it was possible to visually notice a large amount of material between 25 and 76 mm in the mill load during inspection shutdowns. At the time the circulating load was approximately 20 to 25 of fresh ore fed into the SAG mill at a rate of approximately 1 1001 200 tons/hour.

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· currently use a 1-inch grate in the mill that wears out to probably 1-1/4-inch. We ve had 2-inch grates in the mill and we ve even had 2-1/2-inch grates just to see what they would do when we wanted to measure the circulating load. Our circulating load is pretty small 5 percent is probably a good average number.

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