干法后处理含盐废物陶瓷固化技术研究进展

Ceramic Solidification of Salt-containing Waste from Pyrochemical Reprocessing of Spent Nuclear Fuel

对于未来先进核燃料循环系统,基于熔盐电解的干法后处理技术是一种最具发展前景且可靠性好的后处理技术。对干法后处理各环节产生的含盐废物进行陶瓷固化处理,使之以稳定的废物形式在地质处置库中长期处置,是干法后处理最终实现工业化应用的重要保障。本文针对目前国际上主要的干法后处理废物陶瓷固化技术研究进展进行综述,重点介绍熔盐电解还原和电解精炼过程产生的含盐废物陶瓷固化技术的研究进展。

For the future advanced nuclear fuel cycle system,pyrochemical technology based on molten salt electrolysis is generally considered to be one of the most promising and reliable reprocessing technologies.The salt-containing waste generated in each step of the pyrochemical process needs to be converted into a ceramic waste form,which can be stably disposed in a long term manner in deep geological repository.This is of pivotal importance for the scale-up and industrialization of molten salt electrolysis based pyrochemical processing.In this review,the current research progresses of ceramic solidification technology in main nuclear energy countries with respect to salt-containing wastes were summarized and reviewed,with emphasis on ceramic solidifications of salt-containing wastes from electro-reduction process in LiCl-based salt and electro-refining process in LiCl-KCl salt.In addition,future perspectives in this field are also given.