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研究了用 ５０ ｇ／ Ｌ（ Ｎ Ｈ４ ）２ Ｃ Ｏ３ 溶液从含 Ｕ 的 Ｔ Ｒ Ｐ Ｏ 相中反萃 Ｕ 的条件。测定了反萃平衡时间、相比、反萃次数、温度及有机相中 Ｕ 的质量浓度对反萃率的影响。用（ Ｎ Ｈ４）２ Ｃ Ｏ３ 反萃 Ｕ 比原流程的 Ｎａ２ Ｃ Ｏ３ 可减少 ２ 级，反萃液中不会析出（ Ｎ Ｈ４）２ Ｃ２ Ｏ４ 结晶。（ Ｎ Ｈ４）４［ Ｕ Ｏ２（ Ｃ Ｏ３）３ ］在加热转型时， Ｎ Ｈ＋４ 、 Ｃ Ｏ２－３ 及少量 Ｃ２ Ｏ２－４ 、 Ｎ Ｏ－３ 均可挥发除去。
The conditions of stripping U from TPU phase containing U with 50 g / L (N H 4) 2 C O 3 solution were studied. The stripping time, the number of stripping, the temperature and the mass concentration of U in the organic phase on the stripping ratio were determined. With (N H4) 2 C O3 stripping U than the original process Na2 C O3 can be reduced by 2, stripping solution will not precipitate (N H4) 2 C2 O4 crystallization. (N H4) 4 [U O2 (C O3) 3], N H + 4, C O2-3 and a small amount of C2 O2-4 and NO-3 can be volatilized and removed at the heating transition.