RU94010732A - METHOD OF PROCESSING ORE SEMI-PRODUCTS - Google Patents

Claims (1)

The method relates to the enrichment of minerals, in particular to methods for the extraction of noble metals and other heavy mineral components from sand, ore semi-products, and can be used in metallurgy. A method of processing ore semi-products containing noble metals, mainly tailings, including classification - hydrocyclone in two stages with the direction of the sands after the first hydro cycloning for regrinding with subsequent return to classification for the initial hydrocyclone and supplying drain to the second hydrocyclone stage, in which spraying the initial product with water, then wet screening with separation of the fraction larger than 2 mm into the dump, and fraction (-2 mm) for classification , the grinding of sands after the first hydro-cloning before grading is carried out to a particle size of 70–75% of the class (–0.071 mm); in the second stage, hydrocloning is subjected to a drain after the first stage containing 70% of the size of a particle (–0.071 mm) hydrocyclone with getting plum and sand, then sands are subjected to centrifugal separation with release of tailings and concentrate sent for dewatering, and tails and drains obtained after hydrocyclone in a short-cone hydrocyclone are subjected to schelachivaniyu. The proposed method allows to increase the through extraction of gold from gold ores of various deposits (the gold content in the tailings is reduced by 5 - 6 times).