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(a) Extraction of Cu2+ from mineral products by 0.5 m Fe2(SO4)3 subsequent to the reaction between 1 m CrCl2, 4 m HCl, and various loadings of CuFeS2 concentrate. (b) Extraction of Cu2+ from mineral products by 0.5 m Fe2(SO4)3 subsequent to reaction between 1 m CrCl2, 39 g L−1 CuFeS2 concentrate, and various initial concentrations of HCl.
