Gold dissociation and recovery from crushed gold-bearing quartz ore

The article describes the research findings on gold dissociation and recovery from output of impact crusher DKD-300. The mode of these machines includes multiple free impacts of ore particles with following additional self-milling when they collide along intersecting paths in the operating area of crushing. Disintegration of gold-bearing quartz ore from the Maly Taryn and Gurbey deposits, which has uniform and schistic texture, provides the reduction rate to 8.8. The dissociation and recovery analysis shows that crushing of schistic texture ore in DKD-300 dissociates up to 23 % of gravity-concentratable gold, while in case of uniformtexture gold-bearing quartz ore with gold size smaller than 0.1 mm, dissociation of gold up to 19 % is only achievable after additional stage of grinding. This result implies that quartz ore of schistic texture is suitable for selective dissociation and recovery of large-size gold particles at the early stages of pretreatment and without overgrinding. In case of uniform-texture quartz ore, completeness of dissociation of fine gold depends on the rate (cycles) of milling.

Lvov E. S. Gold dissociation and recovery from crushed gold-bearing quartz ore. MIAB. Mining Inf. Anal. Bull. 2021;(12-1):129—138. [In Russ]. DOI: 10.25018/0236_1493_2021_ 121_0_129.

Lvov E.S., Junior Researcher, lvoves@bk.ru, Chersky Mining Institute of the North, Siberian Branch, RAS, Republic of Sakha (Yakutia) Yakutsk, Lenin ave. 43, 677980.

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