Abstract

Classification tests have been carried out on limestone in 10.2-, 15.2-, 25.4- and 38.1-cm “Krebs” hydrocyclones in order to study the effect of cyclone diameter on the reduced-efficiency curve. Parameters which were varied included the vortex finder and spigot diameter, throughput and feed-solids content, but the feed size remained constant. The reduced-efficiency curve was found to be constant for all tests and the conclusion is that for constant feed size this curve is a function of the material being classified only for geometrically similar cyclones and is independent of the cyclone diameter.

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