Abstract
ABSTRACTSolvent extraction of Cu from simulated and real bioleaching solutions obtained from a complex Cu–Ni–Co bearing tailing was investigated using Chemorex CP-150 extractant. The effects of several critical parameters, namely pH, contact time, extractant concentration, metal ion concentration, and organic/aqueous phase ratio on Cu extraction were evaluated. Isotherm studies showed that more than 99.9% Cu was transferred with a single stage for each of the extraction and stripping steps. A mixed Ni–Co sulfide was produced from the extraction effluent. A developed flow sheet was proposed to treat Cu–Ni–Co bearing sulfidic tailings by bioleaching, jarosite precipitation, solvent extraction, and sulfide precipitation processes.
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