THREE-PHASE CONCENTRATOR Russian patent published in 2001 - IPC

FIELD: concentration of placers and ores in the final stages of separation of concentrate from raw material with prevalence of fine gold and inconsiderable difference in density of separated particles. SUBSTANCE: the three-phase concentrator has a drive, separation chamber with a surface of deposition of heavy particles, section for particles of medium density for low-density particles, the drive periodically touching with the aid of a threaded sleeve is coupled to an exciter made in the form of screw-shaping blades and installed with inclination to the horizontal plane of the separation chamber, and the surface of deposition of medium-density particles is partially made in the form of a helical surface enveloping the exciter and installed below the surface of deposition of low-density particles, partially made in the form of a helical surface enveloping the exciter. EFFECT: enhanced efficiency of extraction of precious component and separation of it from minerals containing toxic elements. 2 dwg