原子能科学技术Issue(9)：1551-1556,6.DOI:10.7538/yzk.2015.49.09.1551
玻璃固化过程中硫酸盐分相和分解行为研究
Study on Sulfate Phase Segregation and Decomposition in Vitrification Process
刘丽君 1徐建华 1姜耀中1
作者信息
- 1. 中国原子能科学研究院 放射化学研究所，北京 102413
- 折叠
摘要
Abstract
To resolve the yellow phase problem ,it is necessary to understand sulphur behaviors in the borosilicate waste glasses , especially the sulfate phase segregation behavior and its main decomposition temperature . The sulfate phase segregation and decomposition in simulated high level liquid waste (HLLW ) vitrification process were studied in this paper . The results indicate that molten sulfate segregation happens at early stage (about 900 ℃ ) of the batch melting .Once sulfate is segregated from the melt ,it is difficult to be redissolved .The sulfate in yellow phase begins to decompose at 800 ℃ ,and decomposition is speeded up with the increase of temperature .After 2 h at 1 150 ℃ ,no yellow phase is found at the melt surface ,and sulfur content retained in the melt doesn’t change any more .Based on the research result ,the methods for elimina‐ting yellow phase were proposed and verified .关键词
高放废液/玻璃固化/硫酸盐/分相/分解Key words
high level liquid waste/vitrification/sulfate/phase segregation/decompo-sition分类
能源科技引用本文复制引用
刘丽君,徐建华,姜耀中..玻璃固化过程中硫酸盐分相和分解行为研究[J].原子能科学技术,2015,(9):1551-1556,6.
