METHOD FOR UNDERGROUND ACTIVATION LEACHING OF COMPLEX ORES Russian patent published in 2023 - IPC E21C41/22 E21B43/28 E21B43/263 

FIELD: mining industry.

SUBSTANCE: invention can be used in the underground mining of complex copper-gold deposits. The method of underground activation leaching of complex ores includes explosive preparation of ores and successive leaching of valuable components from them with solutions of appropriate reagents. Explosive-injection preparation of ores is carried out with advanced impregnation with water vapor, which forms a developed system of microcracks with their filling with pore solutions in the zones of pre-destruction of the ore, and then an oxidizing-leaching carbonate solution with a complex of percarbonate and peroxonitrile compounds formed in it in the process of interaction with explosive gases is injected into the ore, after which the ore is irrigated with a weak carbonate solution, while the resulting productive solution is discharged in the lower part of the block and sent for processing with the extraction of valuable components from it that form carbonate and nitrate complexes, and then the ore is irrigated with solutions with a complexing agent to extract the remaining accompanying valuable components from the ore until the specified recovery level is reached.

EFFECT: increasing the efficiency of the process by solving the problem of increasing the through extraction of useful components in the development of deposits of complex ores by reducing the release of mineral-forming and associated ore elements into pore solutions during explosive preparation.

1 cl, 3 dwg