METHOD FOR HEAP LEACHING FROM GOLD-COPPER-PORPHYRITIC ORES

摘要

FIELD: hydrometallurgy.;SUBSTANCE: invention relates to hydrometallurgy, particularly, to extraction of metals from ore by heap leaching. Method of heap leaching from gold-copper-porphyry ores involves formation of a heap from ore, placement of an additional layer of ore over the pile, leaching of a pile formed of ore with an additional layer of ore, solution of sulfuric acid, collection and processing of a productive solution. Additional layer is formed from finely crushed standard according to gold content and copper-off-grade ore, and the pile is formed from ore with a sub-grade by copper and bottom-to-end size. In the lower pile layer ore with low content of sulphide sulfur is laid, and ore with increased content of sulphide sulfur is placed in the intermediate pile layer. Differentiated extraction of useful components by different solutions is carried out.;EFFECT: technical effect consists in technological efficiency of mining production due to reduction of losses of valuable components during ore processing and improvement of environmental safety.;1 cl, 1 dwg