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研究了国产三烷基氧化膦 (混合 )对稀土元素 L a~ Gd及 Y硝酸盐的萃取。试验了 30 %三烷基氧化膦(TRPO)—煤油—硝酸体系中水相酸度 0 .5 m ol/L~ 7mol/L 范围内轻稀土元素的分配比和相邻两稀土元素的分离因子 ,测定了 TRPO稀土萃合物的组成 ,探讨了 γ射线辐照对稀土元素萃取性能的影响
The extraction of rare earth elements L a ~ Gd and Y nitrate from domestic trialkylphosphine oxides (mixed) was studied. The distribution ratios of light rare earth elements and the separation factors of two adjacent rare earth elements in 30% trialkylphosphine oxide (TRPO) - kerosene - nitric acid system were tested in the range of 0-5 m ol / L to 7 mol / The composition of TRPO rare earth complexes was determined and the effect of γ-ray irradiation on the extraction of rare earth elements