An efficient and reliable approach based on solvent extraction to selectively recover copper from leaching solution of Jinchuan copper smelting ash has been developed in this work.And the extraction isotherm of 50%((?...An efficient and reliable approach based on solvent extraction to selectively recover copper from leaching solution of Jinchuan copper smelting ash has been developed in this work.And the extraction isotherm of 50%((?)) N902 with initial aqueous acidity of 19.6 g/L was determined at 25℃.The results show that the extractant,N902,has good selectivity to copper, and its saturated capacity of copper under the given conditions is over 23 g/L.The recovery rate of copper in the extraction is over 99%.And copper extraction equilibrium is reached in 90 s using 50% N902 with kerosene as the diluenting agent at an organic and aqueous volume phase ratio(O/A)of 1.Furthermore,over 99.5% of the loaded copper in the organic phase could be stripped by applying 196 g/L H_2SO_4 as the stripping agent.展开更多
文摘An efficient and reliable approach based on solvent extraction to selectively recover copper from leaching solution of Jinchuan copper smelting ash has been developed in this work.And the extraction isotherm of 50%((?)) N902 with initial aqueous acidity of 19.6 g/L was determined at 25℃.The results show that the extractant,N902,has good selectivity to copper, and its saturated capacity of copper under the given conditions is over 23 g/L.The recovery rate of copper in the extraction is over 99%.And copper extraction equilibrium is reached in 90 s using 50% N902 with kerosene as the diluenting agent at an organic and aqueous volume phase ratio(O/A)of 1.Furthermore,over 99.5% of the loaded copper in the organic phase could be stripped by applying 196 g/L H_2SO_4 as the stripping agent.
