Thorex流程离心萃取器验证台架实验

Experimental Verification of Thorex Process in Multi-Stage Centrifugal Extractors

钍基核燃料后处理Thorex流程的发展倾向于酸式进料,单循环。基于30级10mm环隙式离心萃取器台架系统,对酸式进料、单循环Thorex流程工艺进行台架实验验证。实验结果表明:全流程钍回收率为99.994%,铀回收率为99.30%,钍中去铀分离因子SF_(U/Th)为1.5×10~2,铀中去钍分离因子SF_(Th/U)为2.2×10~4。增加1B工艺段(钍铀分离段)补萃级数应可以进一步提高铀回收率。

The one-cycle acid Thorex process is recommended for thorium-based fuel reprocessing.Experimental verification of Thorex process was performed by 30 stages10 mm centrifugal extractors.The results show that the recovery of Th and U are 99.994% and 99.30% ,respectively.The SF_(U/Th) and SF_(Th/U) are 1.5×10~2 and 2.2×10~4,respectively.A higher recovery of U should be attained if the stages for supplement extraction of 1 Bsection are increased.