INSTALLATION FOR ISOLATION OF FINE MINERAL FRACTIONS Russian patent published in 1999 - IPC

FIELD: mining industry. SUBSTANCE: installation for enrichment of placer gold, platinum, and other heavy minerals comprises casing, cribble, jigging chamber, vibration drive, worm transportation mechanism, pressure control system, and vortex exciter mounted in side wall and linked with vibration drive. Worm transportation mechanism is of variable- radius type and is mounted in fixed position in such a way as to provide descending winds of worm transportation mechanism to be on the side of ascending stream. Vertical axis of said mechanism lies in the same plane with axis of vortex exciter. EFFECT: increased productivity when concentrating placers on strakes under conditions of low size and mean content of valid components. 2 dwg