高温熔盐中氧化物乏燃料的电化学还原研究进展

干法后处理流程可应用于快堆乏燃料后处理。由美国开发的熔盐电解精炼流程是目前最具应用前景的干法后处理流程之一。为了将电解精炼流程应用于氧化物乏燃料后处理,需要将氧化物乏燃料转化为金属。目前电化学还原是应用最广的氧化物乏燃料还原方法,但是该过程仍然存在亟待解决的关键科学与技术问题。本文针对氧化物乏燃料电化学还原研究进展进行综合阐述,主要包括过程简介、研究现状及电化学还原机理等几个方面。

Research Progress on Spent Oxide Fuels by Electrochemical Reduction in Molten Salts

Pyrometallurgical process can be applied to the reprocessing of fast reactor spent fuels. The molten salt electrorefining process developed by Argonne National Laboratory(ANL) is currently one of the most promising pyrometallurgical process. In order to apply the electrorefining process to the reprocessing of spent oxide fuels, it is necessary to convert spent oxide fuels into metals. At present, the electrochemical reduction technique is the most widely used to reduce the spent oxide fuels, while there are still key scientific and technical problems to be solved in this process. This review is focused on the research progress concerning the electrochemical reduction of spent oxide fuels, and is involved in the following main parts: process introduction, current research status and electrochemical reduction mechanism.