Sulfidic gold ore leaching by cysteine in the presence of Na2SO3
Cysteine (CSH: C3H7NO2S) was used to leach gold and silver from sulfidic gold ore with a grade of 29 g/t Au and 28 g/t Ag. 70% Ag as Ag2O.•90% Au and 20% Ag were recovered from the ore using 0.5 M cysteine, 70 °C within 24 h.•Gold dissolution occurred when both the thiol and amine groups were depro...
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| Veröffentlicht in: | Hydrometallurgy 2023-02, Vol.216, p.106018, Article 106018 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Cysteine (CSH: C3H7NO2S) was used to leach gold and silver from sulfidic gold ore with a grade of 29 g/t Au and 28 g/t Ag. 70% Ag as Ag2O.•90% Au and 20% Ag were recovered from the ore using 0.5 M cysteine, 70 °C within 24 h.•Gold dissolution occurred when both the thiol and amine groups were deprotonated.•The leachate was highly alkaline, resulting in the partial pyrite decomposition. |
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| ISSN: | 0304-386X 1879-1158 |
| DOI: | 10.1016/j.hydromet.2022.106018 |