Progress in Reduction of UO2 Using Molten Salt Electro-Deoxidation Method

被引：0

作者：

Du Y. ^{[1
]}

Tang H. ^{[1
]}

Liao J. ^{[1
]}

机构：

[1] Institute of Materials, China Academy of Engineering Physics, Jiangyou

来源：

Xiyou Jinshu/Chinese Journal of Rare Metals | 2020年 / 44卷 / 04期

关键词：

Electrolytic reduction; Molten salt electro-deoxidation method; Spent nuclear fuel; Uranium dioxide;

D O I：

10.13373/j.cnki.cjrm.XY18100025

中图分类号：

学科分类号：

摘要：

Molten salt electro-deoxidation method has various application prospects in the preparations of many metals and alloys, even has been used in the industrial production of some metals. In recent years, using molten salt electro-deoxidation method to deal with the spent fuel has received extensive attention in the spent nuclear fuel post-treatment field. The study on electro-deoxidation of uranium dioxide, the main component of spent fuel, is of great significance to the recycling of uranium and the sustainable development of energy. This paper firstly reviewed the research progress on the electro-deoxidation mechanism of uranium dioxide in recent years, which provided the theoretical basis for the electro-deoxidation process of uranium dioxide. Then the electro-deoxidation process of uranium dioxide was analyzed from the aspect of electro-deoxidation kinetics. The primary difficulties in the electro-deoxidation process were summarized based on the above analysis. The main problems facing to accelerate the current efficiency in the electro-deoxidation process were pointed out, including the molten salt in the electro-deoxidation of uranium dioxide, the fabrication of cathode bulk in the electro-deoxidation process and the anode material used in the electrolysis. In view of the excellent performance of molten salt electro-deoxidation method in the electro-deoxidation process of many kinds of oxides, the developments of the mechanism and technology of electro-deoxidation of uranium dioxide were expected, and the application of electro-deoxidation method in reprocessing of spent nuclear fuel was also prospected. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.

引用

页码：352 / 362

页数：10

共 74 条

[1]

Yan Y.D., Ji D.B., Xue Y., Zhang M.L., Wang P., Liu Y.H., Yin T.Q., Li P., Han W., Wang J., Electrochemical synthesis quaternary Mg-Li-Al-Pr alloy with and without whisker on magnesium cathode in LiCl-KCl-PrCl3-AlCl3 melts, Journal of the Electrochemical Society, 164, 7, (2017)

[2]

Chen G.Z., Fray D.J., Farthing T.W., Direct electrochemical reduction of titanium dioxide to titanium in molten calcium chloride, Nature, 407, 21, (2000)

[3]

Chen Z., Zhao X.K., Preparation of metal layer on surface of dense ZrO2 ceramics plate by molten salts electrolysis, Chinese Journal of Rare Metals, 42, 2, (2018)

[4]

Alexander D.T.L., Schwandt C., Fray D.J., The electro-deoxidation of dense titanium dioxide precursors in molten calcium chloride giving a new reaction pathway, Electrochimica Acta, 56, 9, (2011)

[5]

Dai L., Wang S., Wang L., Yu Y., Shao G.J., Preparation of ZrMn2 hydrogen storage alloy by electro-deoxidation in molten calcium chloride, Transactions of Nonferrous Metals Society of China, 24, 9, (2014)

[6]

Abdelkader A.M., Fray D.J., Electro-deoxidation of hafnium dioxide and niobia-doped hafnium dioxide in molten calcium chloride, Electrochimica Acta, 64, (2012)

[7]

Cai Z.F., Zhang Z.M., Guo Z.C., Tang H.Q., Direct electrochemical reduction)of solid vanadium oxide to metal vanadium at low temperature in molten CaCl2-NaCl, International Journal of Minerals, Metallurgy, and Materials, 19, 6, (2012)

[8]

Vishnu D.S.M., Sanil N., Shakila L., Panneerselvam G., Sudha R., Mohandas K., Nagarajan K., A study of the reaction pathways during electrochemical reduction of dense Nb2O5 pellets in molten CaCl2 medium, Electrochimica Acta, 100, (2013)

[9]

Wu T., Jin X.B., Xiao W., Hu X.H., Wang D.H., Chen G.Z., Thin pellets: fast electrochemical preparation of capacitor tantalum powders, Chemistry of Materials, 19, 2, (2007)

[10]

Gordo E., Chen G.Z., Fray D.J., Toward optimization of electrolytic reduction of solid chromium oxide to chromium powder in molten chloride salts, Electrochimica Acta, 49, 13, (2004)

← 1 2 3 4 5 6 7 8 →