Abstract: LK-C2 was used to separate Fe and Ni from the nitric acid leaching solution of wasted printed circuit boards. Fe and Ni were extracted by using 20% LK-C2 in kerosene countercurrently at two stages at pH=3.00 and 10.00，and the extraction rates were 96.14% and 99.35%，respectively. Fe was stripped by 2.00mol/L HCl countercurrently at two stages and the stripping rate was 99.18%. Ni was stripped by 3.00mol/L H₂SO₄ countercurrently at three stages and the stripping rate was 98.32%.

摘要： 针对废线路板酸浸液的硝酸介质体系，探讨了用LK-C2分离铁（Ⅲ）和镍的萃取及反萃条件。pH值为3.00和10.00时分步采用20%LK-C2-煤油二级逆流萃取铁（Ⅲ）和镍，萃取率分别为96.14%和99.35%。分别采用2.00 mol/LHCl二级逆流反萃回收铁和3.00 mol/LH₂SO₄三级逆流反萃回收镍，反萃率分别为99.18%和98.32%。