Patent ID: 6336559
Filing Date: 2002-01-08
Classification: B03B

Abstract:
In a vertical axis spiral separator having a trough adapted to receive and conduct by gravity in a downward helical path a slurry of solid particles in a liquid carrier to an end location where a stream of solid particles is separated from a stream of said liquid and a light fraction of said particles; the improvement comprising a plurality of replaceable inserts vertically spaced along said trough, said trough having a plurality of spaced depressions for changing the surface profile of said trough at selected locations, along said trough inside concave surface, said replacement inserts having an upper surface with the same concavity and being flush adjoining with said trough inside concave surface, said inserts including surface irregularities that will disrupt the smooth flow of liquid and particles approaching said insert thereby enhancing separating characteristics of said spiral separator.