摘要
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.
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%（φ） 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 H2SO4 as the stripping agent.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2007年第2期273-277,共5页
The Chinese Journal of Process Engineering
关键词
溶剂萃取
铜
化学反应
萃取方法
recovery
copper
copper smelting ash
N902
extraction
