Abstract
Ferrosilicon powders suspended at a high concentration in water are widely used as media in dense-medium separation processes for mineral and coal beneficiation. The size distribution of these powders is a critical parameter in defining the performance of a medium, due to its influence on the sedimentation and rheology of the medium. Commercially manufactured ferrosilicon powders are therefore marketed in different grades corresponding to different size distributions. In the course of an experimental study of a dense-medium cyclone 123, four methods of determining the size distribution of both atomised (spherical) and milled (irregular-shaped) ferrosilicon were investigated. This note compares the results obtained with the different techniques...
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