FIELD: physics.
SUBSTANCE: extraction mixture is proposed for extraction of TPE and REE from a highly active raffinate of NPP SNF reprocessing containing an organophosphorus extractant in a polar diluent. As a polar diluent, a water-insoluble limit unsubstituted alcohol or a mixture thereof with saturated hydrocarbons is used. The method involves the combined extraction of TPE and REE with an organophosphorus extractant solution in a polar diluent, washing the extract from impurities and reextraction. The method can be combined with an additional separation of TPE and yttrium REE by using a strong organophosphorus acid or its zirconium salt as an extractant in a separate cycle.
EFFECT: high degree of separation of TPE and REE.
12 cl, 4 tbl, 3 dwg, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR EXTRACTING AND SEPARATING HIGH-MELTING AND RARE-EARTH ELEMENTS FROM NITRIC SOLUTIONS | 1994 |
|
RU2106030C1 |
| EXTRACTION MIXTURE FOR EXTRACTING TPE AND RARE EARTH FROM HIGHLY ACTIVE RAFFINATE OF OAT GRAIN PROCESSING AND METHOD OF ITS APPLICATION | 2019 |
|
RU2726519C1 |
| METHOD OF EXTRACTION AND RECOVERY OF PUREX-PROCESS REFINED PRODUCT FOR SPENT NUCLEAR FUEL OF NUCLEAR POWER STATIONS | 2003 |
|
RU2249266C2 |
| METHOD OF PROCESSING HIGH-ACTIVITY WASTE WITH FRACTIONATION OF RADIONUCLIDES | 2019 |
|
RU2709826C1 |
| METHOD FOR EXTRACTING TRANSPLUTONIUM AND RARE EARTH ELEMENTS FROM ACID SOLUTIONS AND FOR THEIR SEPARATION | 1999 |
|
RU2165653C1 |
| METHOD FOR EXTRACTION RECOVERY OF PUREX-PROCESS HIGH-ACTIVITY RAFFINATE IN SPENT NUCLEAR FUEL OF NUCLEAR POWER STATIONS | 2005 |
|
RU2295166C1 |
| METHOD OF EXTRACTING MOLYBDENUM-99 FROM SOLUTION OF IRRADIATED URANIUM TARGETS | 2013 |
|
RU2545953C2 |
| METHOD FOR SOLVENT REFINING OF NITRATE SOLUTIONS CONTAINING RARE-EARTH METALS | 2013 |
|
RU2517651C1 |
| METHOD OF EXTRACTION PROCESSING OF HIGH-ACTIVE WASTES WITH FRACTIONATING OF RADIONUCLIDES | 2007 |
|
RU2355057C1 |
| METHOD FOR EXTRACTION EXTRACTION AND SEPARATION OF REE | 2020 |
|
RU2773142C2 |
