| 氨基羟基脲还原反萃高浓度Pu(Ⅳ) |
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| 引用本文： | 沈振芳,王玲钰,肖松涛,兰天,丛海峰,欧阳应根.氨基羟基脲还原反萃高浓度Pu(Ⅳ)[J].核化学与放射化学,2020,42(1):30-36. |
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| 作者姓名： | 沈振芳 王玲钰 肖松涛 兰天 丛海峰 欧阳应根 |
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| 作者单位： | 中国原子能科学研究院 放射化学研究所，北京102413 |
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| 摘 要： | 采用氨基羟基脲（HSC）的硝酸水溶液研究了从30%（体积分数，下同）TBP/煤油中还原反萃高浓度四价钚（Pu（Ⅳ））的性能，并与羟胺-肼（HAN-HN）、N,N-二甲基羟胺-单甲基肼（DMHAN-MMH）在钚净化浓缩循环中反萃行为进行了对比。结果表明：在一定HSC浓度下，适当延长相接触时间、减小相比（o/a）、降低酸度和提高温度，均有利于Pu（Ⅳ）的还原反萃。HSC作为还原反萃剂，可以有效实现30%TBP/煤油中高浓钚的反萃，反萃效果较其它几种还原剂更好，有望在先进二循环流程的钚净化浓缩工艺中得到应用。
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| 关 键 词： | 氨基羟基脲 还原反萃 Pu(Ⅳ) |
Reductive Stripping of High Content Pu(Ⅳ) With Hydroxysemicarbazide |
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| SHEN Zhen-fang,WANG Ling-yu,XIAO Song-tao,LAN Tian,CONG Hai-feng,OUYANG Ying-gen.Reductive Stripping of High Content Pu(Ⅳ) With Hydroxysemicarbazide[J].Journal of Nuclear and Radiochemistry,2020,42(1):30-36. |
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| Authors: | SHEN Zhen-fang WANG Ling-yu XIAO Song-tao LAN Tian CONG Hai-feng OUYANG Ying-gen |
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| Affiliation: | China Institute of Atomic Energy, P. O. Box 275（26）, Beijing 102413, China |
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| Abstract: | The performance of reduction stripping of high concentration Pu(Ⅳ) from 30%TBP/kerosene was studied using hydroxysemicarbazide(HSC) aqueous solution of nitric acid, and was compared with HAN-HN and DMHAN-MMH respectively, in the plutonium purification cycle in PUREX process. The results show that it is beneficial for the reduction stripping of Pu(Ⅳ) by prolonging the phase contact time, reducing the ratio(o/a), decreasing the acidity and increasing the temperature at a certain concentration of HSC. As a stripping reductant, HSC can effectively strip high concentration of plutonium loading in 30%TBP/kerosen and its stripping effect is better than other reductants. HSC is promising for application in the plutonium purification cycle in advanced PUREX process based on organic reductants. |
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| Keywords: | hydroxysemicarbazide reduction stripping Pu(Ⅳ) |
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