FIELD: technological processes.
SUBSTANCE: invention relates to a method of extracting gold from ash-slag wastes including contact of the initial raw material in the form of ash from burning coal with a dissolving medium. Herewith the ash is used from burning coal at a temperature higher than the gold melting point and providing a content of gold particles in the ash of superfine and nanosizes. Dissolving medium used is water. Contact of the said ash with water is carried out while stirring the solution for not less than 20 minutes with further extraction of gold from the aqueous solution by sorption with activated carbon, separation of coal, its regeneration with extraction of gold from regenerating solutions by electrolysis and melting for schlich gold.
EFFECT: technical result is enabling gold transfer into the aqueous phase and creating conditions for implementing the technology of selective extraction of gold from ash-slag wastes with high efficiency without using expensive reagents.
1 cl, 1 ex
