Abstract

The use of microwave heating to produce solid solutions of actinide oxides in the processes of thermal denitration of model nitric acid solutions formed in reducing stripping schemes at the final stages of the PUREX process, containing U and Th (Pu simulator) and unreacted reducing agents (hydrazine, etc.), is proposed. As a result, after quantitative distilling of water vapor, acid, and volatile products into the collector, denitration reductive thermolysis of the concentrate (melt) of actinide nitrates containing 100% of a solid solution of oxides U(Th)О₂ takes place. The U–Th oxide powders obtained meet the regulatory requirements (TU 95414-2005) for ceramic powders.

中文翻译：

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微波加热热还原脱硝生产Act系元素氧化物混合粉

摘要

在PUREX工艺的最后阶段在还原汽提方案中形成的模型硝酸溶液的热脱硝过程中，使用微波加热产生act系氧化物的固溶体，该过程包含U和Th（Pu模拟物）和未反应的还原剂（肼等）。其结果是，水蒸汽，酸，和挥发性产物的定量蒸馏到收集器，脱硝的还原浓缩物的热分解后的含氧化物U（TH）О的固溶体的100％的锕系元素的硝酸盐（熔化）₂发生。获得的U-Th氧化物粉末符合陶瓷粉末的法规要求（TU 95414-2005）。