The SAG mill was designed to treat 2,065 t h −1 of ore at a ball charge of 8% volume, total filling of 25% volume, and an operating mill speed of 74% of critical The mill is fitted with 80 mm grates with total grate open area of 766 m 2 (Hart et al, 2001) A 45 m diameter by 52 m long trommel screens the discharge product at a cut size ,

Get PriceJan 01, 2013· A problem for solving mass balances in mineral processing plants is the calculation of circulating load in closed circuits A family of possible methods to the resolution of this calculation is the iterative methods, consisting of a finite loop where each iteration the initial solution is refined in order to move closer to the exact solution

Get PriceMat circulating load factor is computed for raw-mill and cement-mill at a sep efficiency of 90 and 70% for target residue 16 and 1% respectively on 90 microns sieve This is observed, to maintain an acceptable circulating load factor between 15 to 20, a target mill discharge residue on 90 microns sieve would be 40–50 % for raw grinding and ,

Get PriceThe optimum ball milling speed of the ore was found to be 829% of the critical mill speed , Cumminution is an energy intensive process and a search for conditions that affect , conditions of mill volume, mill speed, feed particle size, a circulating load of 250% and a , 3 was obtained by calculating rates of production of Get Price

Get PriceNov 18, 2014· Slide 3 circulating load ratio : As the ratio of the amount of solids going through the ball mill divided by the amount of solids going through the circuit Circulating load circulating load ratio New feed circulating load ratio [8] 4

Get Price3 apr 2018 a primary crushing stage with a gyratory crusher and a two grinding then mass balance of the circuit was calculated and the models for mills figure 5 33 effect of apex diameter on circulating load and ball mill discharge,

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Get Pricehow how to calculate circulating load in grinding mill in rwanda Here is a formula that allows you to calculate the circulating load ratio around a ball mill and hydrocylone as part of a grinding circuit 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 ,

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Get Priceof circulating load and classification efficiency is difficult to quantify in practice as these two parameters are inherently interrelated Even though mill capacity increases with circulating load, an optimum circulating load of 250% was established [4] due to limitations in cyclone classification efficiency

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