Technetium Recovery from Uranium Extract and Its Concentration Using a Separator during Reprocessing of Spent Nuclear Fuel

IF 0.6 4区工程技术 Q4 ENGINEERING, CHEMICAL

Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI:10.1134/S0040579525700666

K. N. Dvoeglazov, L. N. Podrezova, E. D. Filimonova, D. V. Zverev, A. I. Bogdanov

引用次数: 0

Abstract

The process of reductive reextraction of technetium from a simulated solution of spent nuclear fuel using a separator equipped with an upper separation chamber was tested. Technetium-concentrating reextraction was performed using a nitric acid solution containing a mixture of the reductants carbohydrazide and diformylhydrazine at an organic-to-aqueous (O/A) phase ratio of 20 to 25. Precipitation was observed during reextraction, but it did not disturb the hydrodynamic operating conditions of the separator.

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乏核燃料后处理过程中铀萃取物中锝的回收及其分离富集

试验了用装有上分离室的分离器从乏燃料模拟溶液中还原再提取锝的过程。采用含有还原剂碳肼和二甲酰肼的混合物的硝酸溶液，在有机与水（O/ a）比为20比25的条件下进行技术浓缩再萃取。再萃取过程中出现了沉淀现象，但未影响分离器的水动力运行条件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Theoretical Foundations of Chemical Engineering 工程技术-工程：化工

CiteScore

1.20

自引率

25.00%

发文量

审稿时长

24 months

期刊介绍： Theoretical Foundations of Chemical Engineering is a comprehensive journal covering all aspects of theoretical and applied research in chemical engineering, including transport phenomena; surface phenomena; processes of mixture separation; theory and methods of chemical reactor design; combined processes and multifunctional reactors; hydromechanic, thermal, diffusion, and chemical processes and apparatus, membrane processes and reactors; biotechnology; dispersed systems; nanotechnologies; process intensification; information modeling and analysis; energy- and resource-saving processes; environmentally clean processes and technologies.