THREE-PHASE CONCENTRATOR Russian patent published in 2001 - IPC

FIELD: concentration of placers and ores at final stages of separation of concentrate at prevailing heavy fraction in form of fine floating plastic particles and considerable difference between densities of fractions being separated. SUBSTANCE: three-phase concentrator includes separation chamber with heavy particle settling surface, compartment for average-density particles and compartment for low-density particles, drive engaged with exciter by means of screw joint sleeve; exciter is made in form of worm feeder at varying radius of generating helical surface; exciter is mounted at inclination relative to horizontal plane of separation chamber and in parallel with heavy particle settling surface made in form of descending turns over wall of separation chamber; average-density particle settling surface is mounted below low-density particles setting surface. EFFECT: enhanced efficiency of extraction of useful components. 2 dwg