一种大型中放贮罐沉积物溶解方法

By combining acid dissolution, heated acid dissolution, and alkaline dissolution, the dissolution rate and radionuclide leaching rate of intermediate radioactive storage tank deposits were improved, achieving efficient treatment of intermediate radioactive deposits, which is suitable for reprocessing processes in uranium-plutonium fuel cycles.

CN119035238BActive Publication Date: 2026-07-17SICHUAN ENVIRONMENTAL PROTECTION ENG CO LTD CNNC
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN ENVIRONMENTAL PROTECTION ENG CO LTD CNNC
Filing Date
2024-08-26
Publication Date
2026-07-17

Smart Images

  • Figure CN119035238B_ABST
    Figure CN119035238B_ABST
Patent Text Reader

Abstract

本发明公开了一种大型中放贮罐沉积物溶解方法，涉及核废物处理技术领域。该方法将中放沉积物、高浓度硝酸铵一定质量体积比加入搅拌器进行充分搅拌后；经过滤分离将大部分酸溶液移出，并使用低浓度硝酸进行多次酸洗，再将酸溶后不溶物进行烘干处理；加入一定质量体积比的氢氧化钠在加热下进行搅拌溶解，得到α核素浸取率为95±2％和β核素浸取率为≥99％的溶解液，以及原干燥沉积物质量比为22±2％的不溶物。本发明通过对放射性中放沉积物进行了溶解处理，转变为可被放射性核素降级处理后进行水泥固化的放射性废液和少量不溶物，为放射性沉积物的处理提供了一条新的思路，解决了中放沉积物无法直接水泥固化进行近地表处置的问题。
Need to check novelty before this filing date? Find Prior Art