GRAVITATION APPARATUS Russian patent published in 1999 - IPC

FIELD: mining machinery, particularly, devices for concentration of ores and sands containing nonferrous, noble and rare metals, mainly, for separation by density of finely divided materials in centrifugal field. SUBSTANCE: gravitation apparatus includes centrifuge; pulp supplying unit; light fraction unloading device; heavy fraction unloading device; disk installed inside centrifuge with gap between them and between bottom and walls, and for rotation together with centrifuge; circular troughs on centrifuge internal surface for supply of washing water under pressure in different directions relative to rotation of centrifuge. For regulation of supply of initial material with strict solid-liquid ratio, pulp supplying unit has supplying screw conveyor, mixing disks and nozzles for injection of water. EFFECT: improved quality of separation due to considerable increase of intensity of concentration and action on separated material of centrifugal forces varying in magnitude and direction, higher recovery of minerals, especially of fine classes, with simultaneous increase of concentrate quality. 1 dwg, 1 dwg