A fundamental study of copper and cyanide recovery from gold tailings by sulfidisation
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Cyanide soluble copper in gold ores causes numerous problems for gold producers using cyanidation. This includes increased costs from high cyanide consumption and a requirement to destroy cyanide in the tailings before discharge into a tailings storage facility. This thesis details the results of fundamental studies of sulfidisation processes, such as SART (sulfidisation, acidification, recycle, and thickening), to recycle cyanide and in turn recover copper from gold cyanidation tailings.
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Gold dissolution and copper suppression during leaching of copper-gold gravity concentrates in caustic soda-low free cyanide solutionsOraby, E.; Eksteen, Jacques (2015)In the cyanidation process, copper–gold deposits containing significant amounts of cyanide soluble copper can lead to high cyanide consumption with low gold extraction. The significant levels of weak acid dissociable (WAD) ...
Dai, X.; Simons, Andrew; Breuer, P. (2012)Many gold producers are today processing gold ores containing significant amount of cyanide soluble copper. Typically, cyanide destruction is used to prevent the discharge of copper cyanide into tailings storage facilities. ...
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, ...