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Abstract <p>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.</p>

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

  • 期刊论文

  • 发表日期：

    2025年4月1日

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

摘要

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.