期刊论文

Effect of Acidity on Purification of Zirconium and Ruthenium in the Purex Process

中文

核科学与工程

0258-0918

2021

41

02

417-426

10.3969/j.issn.0258-0918.2021.02.030

本校为第一机构

在保证Purex流程中钌高净化效率的基础上,尽量提高锆的去污效率,以优化Purex流程去污工艺。本文通过搭建台架试验平台,采用多级萃取方式,模拟Purex流程中共去污过程,开展了1AF酸度和1AS酸度对铀锆钌在流程中的分布情况及对锆钌去污效果的影响研究。研究结果表明:提高1AF酸度不利于锆的去污,有利于钌的去污;提高1AS酸度可以加强锆钌的洗涤,有利于锆钌的去污。30℃条件下,当1A槽采用3.5mol/L硝酸进料,3mol/L硝酸洗涤时,铀的回收率达99.9%,锆的去污系数达30.38,钌的去污系数达8.69。

On the basis of ensuring high purification efficiency of ruthenium in the Purex process, the decontamination efficiency of zirconium should be improved as much as possible to optimize the decontamination process of the Purex process.In this paper, a bench test platform was built to simulate the decontamination process of the Purex process by multi-stage extraction. The effects of 1AF acidity and 1AS acidity on the distribution of uranium, zirconium and ruthenium in the process and the decontamination effect of zirconium and ruthenium were studi...