Promising Mining Technologies for Gold Placers in Transbaikalia
V. N. OPARIN1, A. G. SEKISOV2, A. I. TRUBACHEV2, B. N. SMOLYANITSKY1, V. S. SALIKHOV2, N. V. ZYKOV2
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2Chita Division, Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, ul. Aleksandro-Zavodskaya 30, Chita, 672039 Russia
Keywords: Забайкалье, россыпь, условия залегания, морфолого-генетические типы, минералы шлиха, фотоэлектроактивационное скважинное выщелачивание, золото пластинчатое, тонкое и дисперсное, гранулометрия, новые технологии извлечения, Transbaikalia, placer, occurrence conditions, morphological-genetic types, bullion minerals, photoelectron-activated borehole leaching, flattened gold, fine gold, dispersed gold, grain-size composition, new recovery technologies
Abstract
The discussed basic features of geology at gold placers in Transbaikalia include: long extent, occurrence of a gold pay bed nearby gutter, small thickness of a gold pay bed and deep occurrence sometimes, majority of fine flattened gold particles. It is suggested to enhance development of such placers using new engineering solutions. It is recommended to carry out flushing by means of technologies based on the combination of flotation and gravity concentration followed by activation leaching of gold from concentrates and bullion minerals-gold concentrators. A new leaching technology offered for deep-seated placers involves pre-drainage of a pay bed, saturation of the pay bed with photoelectron-activated concentrated solutions and, finally, electrodiffusion leaching of gold.
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