METHOD OF HEAP LEACHING OF REFRACTORY COMPLEX ORES Russian patent published in 2025 - IPC C22B3/06 C22B11/00 C22B15/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to processing of refractory complex ores. Method includes multi-stage crushing of ore and its layer-by-layer stacking, leaching of copper with water-gas emulsions prepared by electric activation of sulfuric acid solution and its bubbling with ozone. Further, ore is irrigated with recycled solutions until copper concentration decreases. After the pile is irrigated, it is stopped and it is drilled from the surface with wells with the perforated pipes system placement therein, followed by two-stage internal irrigation of mineral mass with initially water with washing out of its small-fractional sludge-forming component, then, pile coarse-fractional mass is impregnated via wells with water-gas emulsions for leaching of molybdenum and copper. Then solution of reagents for leaching of gold and silver is supplied through wells. Then final leaching of gold and silver is performed by means of supply through wells and irrigation from the surface of oxygenated water or weak sulfuric acid solution with sodium chloride added to it and its bubbling with ozone.

EFFECT: higher yield of copper, molybdenum, gold and silver.

1 cl, 1 dwg, 1 ex