Recovery of submicron encapsulated gold from rebellious ore of Delken deposit

The study focuses on gold recovery from rebellious ore of Delken deposit. The feature of this ore is the high content of large gold and quartz aggregates, fine gold and quartz accretions and submicron gold shots in all ore-forming minerals. Such diversity of gold occurrence in ore requires a processing technology regarding various process types of gold to maximize its recovery. According to the chemical analysis, the gold content of the test ore is 31.24 g/t. Gold particles less than 1 µm in size, present in various ore-forming minerals, are characterized. The studies into gold recovery were implemented in the hot cyanide concentration test of ore samples ground down to the size of 40 µm. Au recovery made 97.7 %. Considering high gold content and resistance of the test ore to the standard cyanide leach concentration, we can draw a conclusion that fine grinding of this ore in combination with hot cyanidation can be effectively used on a commercial scale. Furthermore, it is advisable to subject such ore to preliminary gravity concentration and autoclave leaching.

Lavrik A. V., Konareva T. G., Rasskazova A. V. Recovery of submicron encapsulated gold from rebellious ore of Delken deposit. MIAB. Mining Inf. Anal. Bull. 2021;(12–1):121—128. [In Russ]. DOI: 10.25018/0236_1493_2021_121_0_121.

Lavrik A. V.¹, Junior Researcher, post-graduate student, alexalavrikxx@gmail.com;
Konareva T. G.¹, Researcher, konar_tat@mail.ru;
Rasskazova A. V.¹, Cand. Sci. (Eng.), Senior Researcher, annbot87@mail.ru;
¹ Mining Institute of the Far Eastern Branch of Russian Academy of Sciences, 51, Turgeneva St., Khabarovsk, Russia.

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