Recovery of Gold and Copper from Alkaline Cyanide-Starved Glycine Solutions Using Sulfide Precipitation and Ion-Exchange
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A novel glycine-based leach system was recently proposed, and it has been proved to be effective for copper and gold extraction. The synergetic glycine-cyanide system is particularly effective for treating copper-gold resources. To further improve this process and pave the way to scale-up the process from bench-scale to pilot-scale testing, detailed studies of two recovery technologies i.e. sulfide precipitation and ion-exchange adsorption for gold and copper recovery from the cyanide-starved glycine system were investigated.
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Gold and copper leaching from gold-copper ores and concentrates using a synergistic lixiviant mixture of glycine and cyanideOraby, E.; Eksteen, Jacques; Tanda, B. (2017)© 2017 Elsevier B.V.The presence of cyanide soluble copper in the cyanidation of gold-copper ores and concentrates significantly increases the cyanide consumption in order to achieve sufficient gold recovery. In addition, ...
Activated carbon adsorption of gold from cyanide-starved glycine solutions containing copper. Part 1: IsothermsTauetsile, P.; Oraby, Elsayed; Eksteen, Jacques (2019)Cyanide-starved alkaline glycine solutions have been shown to have distinct advantages in terms of lower reagent consumption and detoxification needs, or leach rate and recovery, over cyanide- only and glycine-only leach ...
Oraby, E.; Eksteen, Jacques (2015)© 2015 Elsevier B.V. Abstract In the cyanidation of copper-gold ores, the presence of copper minerals can lead to soluble gold losses, the production of weak acid dissociable (WAD) cyanide, as well as a number of operational ...