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GUO Yi fei, JIAO Rong zhou, LIANG Jun fu, SONG Chong li, HUI Hong yan, LIU Xiu qin (Institute of Nuclear Energy Technology, Tsinghua University, Beijing 102201, China). Removal of C_2O_4~(2-) From U Stripping Solution With HNO_3 Oxidation[J]. Atomic Energy Science and Technology, 2000, 34(6): 540-540. DOI: 10.7538/yzk.2000.34.06.0540
Citation: GUO Yi fei, JIAO Rong zhou, LIANG Jun fu, SONG Chong li, HUI Hong yan, LIU Xiu qin (Institute of Nuclear Energy Technology, Tsinghua University, Beijing 102201, China). Removal of C_2O_4~(2-) From U Stripping Solution With HNO_3 Oxidation[J]. Atomic Energy Science and Technology, 2000, 34(6): 540-540. DOI: 10.7538/yzk.2000.34.06.0540
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  • The removal condition of C 2O 4 2- from U stripping solution is studied. In 7.5～9.5 mol·L -1 HNO 3, the solution with ρ (U)=3～22 g·L -1 and c (C 2O 4 2- )=0.2～0.8 mol·L -1 is distillated for 7 h at 100 ℃. The C 2O 4 2- is decomposited and removed completely, and the UO 2(NO 3) 2 NH 4NO 3 solution is resulted. In the distillation condition at 100 ℃, NH 4NO 3 is decomposited slightly and the operation is safe.
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