APPARATUS FOR GRAVITY DRESSING OF DISINTEGRATED ORES AND PLACERS Russian patent published in 1997 - IPC

FIELD: mineral dressing. SUBSTANCE: apparatus contains a number of rotor pans with annular rifflings in inner surface and arrangement for feeding and discharging light and heavy fractions. Inside each rotor pan, distributors of loosening water are rigidly installed in parallel with generatrix of rifflings and having slots against the rifflings. Depth of annular rifflings is equal to 8-10 d_max where d_max is maximum size of feed particles. Arrangement for discharging heavy fraction is made in the form of a series of openings disposed in the pan bottom and closed with a valve. Apparatus may be used in building and chemical industries. EFFECT: improved design. 2 dwg