Refinement of the Nepheline Discriminator: Results of a Phase II Study.

Fox, K. M. ; Edwards, T. B.

Technical Information Center Oak Ridge Tennessee

关键词: Nepheline;    Radioactive waste management;    Phase diagrams;    Aluminium oxides;    Vitrification;   

RP-ID  :  DE2009945385

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Twenty five glass compositions were selected for a Phase II study to assess the potential for reducing the conservatism in the nepheline discriminator. The glass compositions were restricted to regions that fell within the validation ranges of the DWPF PCCS models. In addition, the liquidus temperature model was used to restrict the glass compositions so that they could all be melted at the same temperature. The nepheline discriminator was used to force the glass compositions into regions where nepheline formation was predicted to occur. The glasses were fabricated in the laboratory and characterized for crystallization and chemical durability after both quenching and slow cooling. Chemical analysis showed that the fabricated glasses met the target compositions.