MBUYA ILUNGA Bienvenu*1, TSHIBANDA NTAKAMUTSHI Patrick2, MUHUNGU TSHUYI Symphorien1, KAWAMA NGOIE Francis1, KASONGO KALENGA Gigi2, NKULU WA NGOIE Guy3

The current technological and economic constraints impose the development of efficient and ecofriendly processes for the simultaneous treatment of sulphide and oxidized ores. This work investigated the simultaneous extraction of copper and cobalt from the ternary chalcopyrite-magnetite-heterogenite system (CuFeS2-Fe3O4-Co2O3) without the addition of oxidizing and reducing reagents. The redox pair (Fe3+/Fe2+), called loop Fe3+-Fe2+, created and maintained in the reaction medium served to make this simultaneous leaching possible. The following parameters were considered: acidity (75, 204, 332 and 460 g/L), temperature an (25, 40, 60 and 80°C), and mass of iron oxide (8, 16, 24, 32 g). The copper and cobalt solubilization yields obtained were 89.93% and 95.72% at 32 g and 80 ° C. The results showed that solubilization of cobalt was not influenced by temperature. Télécharger l'article