FIELD: chemical industry; nuclear power engineering; methods of re-extraction of vanadium from the organic solution containing its salts with the di-2-ethylhexylphosphoric acid.
SUBSTANCE: the invention is pertaining to the method of re-extraction of vanadium from the organic solution containing its salts with the di-2-ethylhexylphosphoric acid. The invention is dealt with the method of the radiochemical reprocessing of the constructional materials of the thermonuclear reactor on the basis of the vanadium-chromium-titanium alloy with the purpose of extraction of vanadium from the organic solutions containing its salts with di-2- ethylhexylphosphoric acid. The re-extraction of vanadium from such solutions is exercised with the help of the nitric acid solutions at the acid concentration of no more than 0.5 mole per liter, containing hydrogen peroxide in amount of no less than 2.5 mole per one mole of vanadium. The technical result of the invention is the decreased duration of the process of the vanadium re-extraction with its simultaneous purification from the rare-earth elements.
EFFECT: the invention ensures the decreased duration of the process of the vanadium re-extraction with its simultaneous purification from the rare-earth elements.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DISSOLVING VANADIUM-CHROMIUM-TITANIUM ALLOY-BASED STRUCTURAL MATERIAL OF THERMONUCLEAR REACTOR | 2001 |
|
RU2197545C2 |
| METHOD FOR SEPARATING RARE-EARTH METALS AND TRANSPLUTONIUM ELEMENTS FROM LIQUID HIGH-ACTIVITY WASTES | 1993 |
|
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| METHOD OF PROCESSING HIGH-ACTIVITY WASTE WITH FRACTIONATION OF RADIONUCLIDES | 2019 |
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| EXTRACTION MIXTURE FOR THE RECOVERY OF TPE AND REE FROM HIGH-ACTIVE RAFINAT OF NPP SNF PROCESSING AND THE METHOD OF ITS USE (VERSIONS) | 2016 |
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| METHOD FOR RECOVERING BISMUTH FROM NITRIC ACID SOLUTIONS | 0 |
|
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| METHOD FOR EXTRACTION ISOLATION OF TRANSPLUTONIUM AND RARE EARTH ELEMENTS | 2021 |
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| METHOD FOR EXTRACTION EXTRACTION AND SEPARATION OF REE | 2020 |
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| EXTRACTION MIXTURE FOR EXTRACTING TPE AND RARE EARTH FROM HIGHLY ACTIVE RAFFINATE OF OAT GRAIN PROCESSING AND METHOD OF ITS APPLICATION | 2019 |
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