Cyanidation of Gold Associated with Silver Minerals in Sulfide Mineral Matrices |
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| Authors: | Muhammad Khalid Faïçal Larachi Alain Adnot |
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| Affiliation: | Laval University, Department of Chemical Engineering, Québec, QC, Canada |
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| Abstract: | Lead salt stimulated the dissolution of gold when gold associated with silver minerals was interspersed in the silica or in the pyrite‐silica layer. Gold dissolution was likewise promoted through lead addition for chalcopyrite‐silica and the sphalerite‐silica systems. Lead addition did not boost gold dissolution and a recovery of 6.9 % was achieved for gold and silver minerals dispersed in stibnite. Lead pretreatment also enhanced gold recovery except for the stibnite‐silica system. Gold surface‐passivating films were observed for gold associated with silver minerals and stibnite. |
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| Keywords: | Gold cyanidation Lead acetate Silver minerals Sulfide minerals |
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