For Kazzinc Ltd.: laboratory researches for development of technology for extraction of ore from resistant gold-bearing concentrates by electrochemical hydrochlorination method.

New technology for extraction of ore from resistant gold-bearing concentrates by electrochemical hydrochlorination method with separation of ore as cathode deposit has been developed. Ore extraction level of 92% has been reached.

Forms of precious metals in ores, processed by ore dressing plant RMDP of Kazzinc Ltd., and in dressing products have been determined; recommendations for increasing of their extraction into commercial concentrates have been provided.

On the basis of the rational analysis of forms of precious metals in ores, processed by ore dressing plants of Kazzinc Ltd., in final tailings and in dressing products, forms of precious metals have been determined and recommendations for increasing of their extraction into commercial concentrates have been provided.