TECHNOLOGICAL AND ENVIRONMENTAL FEATURES OF HEAP LEACHING OF GOLD-BEARING ORES IN THE DELMACHIK DEPOSIT
K. K. Razmakhnin, P. A. Vasilyuk
Chinakal Institute of Mining, Siberian branch, Russian Academy of Sciences, Chita, Russia
Keywords: Gold-bearing ores, leaching, cyanide-free reagent, process parameters, mode
Abstract
The problem of gold-bearing ore leaching by sodium cyanide is estimated. The prospects of using cyanide-free reagents in the processes of gold hydrometallurgy are studied. The possibility of introducing a cyanide-free reagent which is less environmentally hazardous than sodium cyanide is determined. The results of experimental studies on the comparability of leaching indices of gold-bearing ores using sodium cyanide and a reagent based on sodium cyanate are analyzed. The optimal parameters for the implementation of the technological process of ore gold recovery using the proposed reagent are found.
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