Electrorefining Cerium in NaCl-KCl-CeCl3 Molten Salts

被引：0

作者：

Wu Y. ^{[1
]}

Li H. ^{[2
]}

Chen Y. ^{[2
]}

Feng Y. ^{[2
]}

机构：

[1] GRINM Resources and Enviroment Tech. Co., Ltd., Beijing

[2] The 404 Company Limited CNNC, Lanzhou

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2020年 / 38卷 / 01期

关键词：

Cerium metal; Electrorefining; Molten salt; Spent fuel;

D O I：

10.11785/S1000-4343.20200110

中图分类号：

学科分类号：

摘要：

The electrorefining of cerium which was used as a simulated metal in NaCl-KCl-CeCl3 molten salt system was studied, in order to provide a research basis for purifying U, Pu and other metals in dry reprocessing of spent fuel. The effects of CeCl3 concentration, electrolysis temperature and cathode current density on the yield and current efficiency of electrorefining Ce were studied. The optimum process conditions are as follows: CeCl3 concentration is about 20%~25%, electrolytic refining temperature is 900~950 ℃, cathode current density is 0.35~0.45 A•cm-2 and dense cerium ingots are obtained, the product yield greater than 70%. The impurity elements Al, Fe, Cu, Cr and Mn decreased greatly after refining, especially the removal effect of Fe was significantly reduced from 1300×10-6 to 200×10-6. © 2020, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：76 / 82

页数：6

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