The extraction of copper using LIX 84-1 was investigated. It was established the extraction isotherm for the system LIX 84-1 (HR = 0.72 M) in Shellsol T/ etching effluent (Cu~(2+) = 121.6 g. L~(-1) NH_4Cl = 4 M and NH_3 = 3 M). The stripping of a loaded organic phase (LIX 84-1 = 0.74 M, Cu~(2+) = 19.9 g.L~(-1)) was carried out with an aqueous solution of sulphuric acid (150 g.L~(-1)) and the stripping isotherm was produced. For both process (extraction and stripping) the number of stages required for an industrial situation was determined. Copper extraction from acidic sulphate solutions using LIX 84-1 was studied in order to define the stoichiometry of copper extraction and to calculate the value of 1.7 for the thermodynamic equilibrium constant.
展开▼
