FIELD: metallurgy.
SUBSTANCE: method of extraction reprocessing of restored uranium includes recovery of technetium (VII) in water solution of uranyl- nitrate by nitro-acid solution of diamide at presence of uranium (IV), uranium (VI) extraction by tributyl phosphate in organic vehicle. Additionally technetium (VII) recovery is implemented no more then during 20 minutes at value of excess nitrate-ion relative to its amount in uranyl-nitrate 0.15-0.94 mole/l.
EFFECT: method totally excludes formation of sediments of hydrolised uranium, provoking of renewal process shutdown of technetium, and extraction purification of uranium from technetium, requires less consumption of uranium and provides peak value of technetium reduction value.
2 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PURIFYING URANIUM(VI) FROM TECHNETIUM(VII) | 2000 |
|
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| METHOD OF PROCESSING NITRATE SOLUTION OF RECOVERED URANIUM COMBINED WITH REMOVAL OF TECHNETIUM | 2011 |
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| METHOD OF EXTRACTANT PURIFICATION OF REGENERATED URANIUM | 2007 |
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| PROCESSING METHOD OF NITRIC-ACID SOLUTION OF REGENERATED URANIUM WITH REMOVAL OF TECHNETIUM (VERSIONS) | 2009 |
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| METHOD FOR EXTRACTION PURIFICATION OF URANIUM EXTRACT FROM TECHNETIUM | 2021 |
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| METHOD FOR SEPARATION OF NEPTUNIUM AND PLUTONIUM IN NITRIC ACID SOLUTIONS (VARIANTS) | 2021 |
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RU2765790C1 |
| METHOD FOR TREATMENT OF REPROCESSED URANIUM | 2010 |
|
RU2447523C2 |
| METHOD FOR NEPTUNIUM REMOVAL DURING SEPARATION OF LONG-LIVING RADIONUCLIDES | 2010 |
|
RU2454740C1 |
| METHOD OF PURIFYING URANIUM OXIDES FROM IMPURITIES | 2009 |
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RU2384902C1 |
