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本文采用恒界面池法和上升单液滴法研究了UO_2(NO_3)_2/HNO_3/TBP-环己烷体系的反萃取动力学。得出扩散控制下的反萃速率方程为R=k_1[U]_(O)[TBP]_(O)~(-1.17)[HNO_3]~(-1.70;在恒定硝酸浓度下化学反应控制的反萃速率方程为R=k_2[U]_(O)[TBP]_(O)~0,并对二种速控类型下的反萃机制进行了讨论。
In this paper, the kinetics of the stripping of UO_2 (NO_3) _2 / HNO_3 / TBP-cyclohexane system was studied by the constant interface cell method and the ascending single drop method. The equation of stripping rate under diffusion control is obtained as follows: R = k_1 [U] _ (O) [TBP] _ (O) -1.17 [HNO_3] ~ (-1.70) The stripping rate equation is R = k_2 [U] _ (O) [TBP] _ (O) ~ 0 and the stripping mechanism under two types of quick control is discussed.