METHOD OF PROCESSING CLAYEY GOLD-CONTAINING ORES Russian patent published in 1998 - IPC

FIELD: precious metal recovery. SUBSTANCE: invention particularly concerns primary mining and gravitational concentration and may find use at small seasonal enterprises with output up to 40 t/hr. Ore is preliminarily crushed in scrubber, minus scrubber product is subjected to gravitational enrichment and disintegration, the first gravitational enrichment step being carried out on wash box. Wash box refuse is sized and sludge fraction is withdrawn from process as dump product. Grail fraction together with plus disintegration product is subjected to two-step crushing with intermediate sieving on stone- mill classifying machines to produce crushed product which further subjected to stepped disintegration and gravitational enrichment together with or separately from minus scrubber product. EFFECT: reduced specific power consumption, investment expenses, and increased utilization of equipment. 1 dwg