为有效地改善铀 镎分离效果 ,采用了单级反萃方法 ,以乙异羟肟酸为无盐配位体 ,对其从30 %TBP中反萃Np(Ⅳ )的行为进行了较详细的研究。探讨了反萃时间、酸度、配位体浓度、相比、反萃次数、温度、HDBP浓度、放置时间、Np价态等因素的影响。实验结果表明 ,低碳异羟肟酸型配位体对Np(Ⅳ )有很好的配位效果 In order to effectively improve the separation efficiency of uranium 镎, a single-stage stripping method was employed. The behavior of stripping Np (Ⅳ) from 30% TBP with acetohydroxamic acid as salt-free ligand was studied in detail. the study. The effects of such factors as stripping time, acidity, ligand concentration, phase contrast, number of stripping, temperature, HDBP concentration, storage time and Np valence were discussed. The experimental results show that the low-hydroxamic acid type ligand has a good coordination effect on Np (Ⅳ)