Methods and apparatus for continuous centrifugal classifying of a continuous flow of particulate material

Abstract From the Canadian patent

Method and apparatus is provided for continuous centrifugal classifying in a deflected flow within a wide cut-size range at high and low throughputs using the Coanda effect wherein the classifying flow is a deflected curved flow which is bounded internally by a deflecting wall and has a free jet external boundary adjacent an outer flow. The centrifugal forces occuring in the deflected wall jet separate the particles of material while the free outer boundary ensures that coarse material is removed from the classifying flow and cannot return to it.