Abstract

A dual-cascade system for the purification of regenerated uranium hexafluoride from ^{232, 234, 236}U is proposed. In the first cascade, regenerated uranium is enriched to a ²³⁵U concentration of no less than 20% with a decrease in the mass ²³⁶U/²³⁵U ratio. Its additional feed flow is waste uranium hexafluoride, whose contaminated flow is removed as an additional product. The second additional feed flow is natural uranium hexafluoride. The main product flow from the first cascade is sent as a feed flow to the second cascade. Its waste purified from ^{232, 234}U is diluted with low-enriched or natural uranium hexafluoride to the ²³⁵U concentration less than 5%. A numerical experiment is also performed. It is shown that the product formed after diluting the waste of the second cascade satisfies the ASTM C996-20 specification requirements for enriched commercial uranium hexafluoride in terms of ^{232, 234, 236}U.

中文翻译：

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具有两个附加进料流和一个产品流的双级联系统，用于从 232、234、236U 中纯化再生六氟化铀

摘要

提出了一种用于从 232、234、236 U^{中 提纯}再生六氟化铀的双级联系统^。 在第一个级联中，再生铀浓缩至²³⁵ U 浓度不低于 20%，同时质量²³⁶ U/ ²³⁵ U 比率降低。它的额外进料流是废六氟化铀，其污染流作为额外产品被去除。第二个额外的进料流是天然六氟化铀。来自第一个级联的主要产品流作为进料流发送到第二个级联。其废液从^{232提纯，234} U用低浓或天然六氟化铀稀释至²³⁵ U浓度小于5%。还进行了数值实验。结果表明，稀释第二级的废物后形成的产品在^{232、234、236} U方面满足 ASTM C996-20 对商业浓缩六氟化铀的规范^要求。