| Titre : | Upgrading of a chalcopyrite concentrate by reaction with copper(II) and sulfite : Unexpected formation of Chevreul’s salt, Cu2SO3·CuSO3·2H2O (2011) |
| Auteurs : | Adam J. Fischmann, Auteur ; David G. Dixon, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Minerals engineering (Vol. 23 N° 9, Août 2010) |
| Article en page(s) : | pp. 746–751 |
| Note générale : | Génie Minier |
| Langues : | Anglais |
| Tags : | Sulfide ores Hydrometallurgy Non-ferrous metallic Reduction |
| Résumé : | Recovery of aqueous copper(II) onto a chalcopyrite concentrate was shown to be rapid at 60 °C in the presence of S(IV), in this case sulfite. Surprisingly, rather than partial conversion of chalcopyrite to a copper sulfide such as chalcocite or covellite, copper was removed from solution by precipitation of a mixed-valence copper sulfite, Chevreul’s salt (Cu2SO3·CuSO3·2H2O). This has application as a way to increase the copper grade of chalcopyrite concentrates using the leachate from a Galvanox™ leach of flotation tailings, offering several advantages over similar processes employing an autoclave to effect copper precipitation. |
| DEWEY : | 622 |
| ISSN : | 0892-6875 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0892687510001408 |
