REMOVAL METHOD OF GOLD FROM REFRACTORY ORES BY HEAP LEACHING Russian patent published in 2015 - IPC C22B11/08 C22B3/04 

Abstract RU 2538435 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to hydrometallurgy of precious metals and can be used namely for removal of gold at heap leaching of refractory gold-containing ores with cyanide solutions. The method consists in the fact that pyrite cinders are added to the ore prior to laying into a pile or during its formation. Eroded, aged cinders and cinders of current production are used as pyrite cinders. After formation of a pile, leaching of gold with solutions of cyanides is performed.

EFFECT: improving a degree of gold removal at cyanide leaching of refractory ores; reducing consumption of cyanide.

8 cl, 6 tbl, 6 ex

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RU 2 538 435 C2

Authors

Zabolotskij Aleksandr Ivanovich

Grebnev Gennadij Sergeevich

Dates

2015-01-10Published

2012-12-24Filed