摘要
本文报导了异羟肟酸类的正丁醇溶液从硝酸体系中萃取钇(Ⅲ)及混合稀土的研究。重点考察了苯甲酰异羟肟酸萃取钇(Ⅲ)的条件,当水相酸度为pH=4.5～5.5,萃取剂浓度为0.05mol/L,相比(Vo/Vw)为1:3时,获得最佳萃取效果。
This paper reports the solvent extraction of yttrium (Ⅲ) and rare earthmixture from nitric acid solution by hydroxamic acid N-butyl alcohol. Theoptimum extraction condition of yttrium(Ⅲ) by benzohydroxamic acid(BHA)is found. The parameters are: acidity of equilibrium equeous phase ispH = 4.5～5.5, concentration of extraction agent is 0.05 mol/L and ratio ofphase (Vo/Vw ) is 1:3.
关键词
稀土
钇(Ⅲ)
萃取
异羟肟酸
yttrium (Ⅲ)
rare earth
hydroxamic acid
extraction
