Abstract

The partition phenomenon in the classification characteristics of Sturtevant-type air classifiers, usually observed in high solid concentration conditions, are studied and analyzed under the assumption of a collision-interference model. Based on the above analysis, the stochastic model by Molerus on classification is modified and a comparison is made between the theoretical fractional recovery curves and those observed for a classifier in operation. Based on all the above investigations, some suggestions on optimization of operating conditions and in the design of closed-circuit grinding systems are made.

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