Development of an environmentally benign reprocessing technology - Pyrometallurgical reprocessing technology

被引：31
|
作者：
Nishimura, T [1 ]
Koyama, T [1 ]
Iizuka, M [1 ]
Tanaka, H [1 ]
机构：
[1] Cent Res Inst Elect Power Ind, Komae, Tokyo 201, Japan
来源：
PROGRESS IN NUCLEAR ENERGY | 1998年 / 32卷 / 3-4期
关键词：
D O I：
10.1016/S0149-1970(97)00032-2
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Present status of research and development on pyrometallurgical reprocessing technology in Central Research Institute of Electric Power Industry is described with emphasis on electrorefining and waste salt immobilization. As for the electrorefining, three different electrodes - anode basket, solid cathode, and liquid-cadmium cathode - have been being investigated; prismatic anode basket with faster rotation was found to accelerate metal-fuel dissolution. Morphology and collection efficiency of electrodeposited uranium on solid cathode were found to vary with ratio of cathode to anode surface area. Liquid-cadmium cathode with a paddle-shape stirrer was developed and determined maximum uranium concentration into the cathode without dendrite formation. As for waste salt immobilization, sodalite is proposed as waste form and synthesized by dry reaction without gas generation. Measured leachability of the synthesized sodalite is as low as those of vitrified waste form. (C) 1997 Published by Elsevier Science Ltd.
引用
收藏
页码：381 / 387
页数：7
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