FIELD: chemistry.
SUBSTANCE: invention relates to a method of extraction uranium refining and can be applied in the technology of processing uranium regenerated from irradiated nuclear fuel (regenerated uranium) and natural uranium chemical concentrates (NUCC). The method of extraction uranium refining includes the dissolution of uranium concentrates in nitric acid, extraction of uranyl nitrate TBP in a hydrocarbon diluent, washing the extract with uranium re-extract and re-extraction. The dissolution of uranium concentrates is combined with the extraction of uranyl nitrate, with the simultaneous supply to an extragent of an uranium concentrate and a water solution of nitric acid by counterflow.
EFFECT: simplification of a technological scheme due to the provision of obtaining the uranium re-extract, satisfying ASTM requirements, and raffinates waste by uranium.
2 ex
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| METHOD OF PROCESSING IRRADIATED NUCLEAR FUEL ON NUCLEAR POWER PLANTS | 1997 |
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