FIELD: supercritical and subcritical extraction of metals; actinide extraction.
SUBSTANCE: proposed extraction mixture incorporates β-diketone and additional chelate in solvent. Used as solvent is mixture incorporating liquid solvent or supercritical fluid and as additional chelate, oxygen-containing organic compounds undecomposable in the course of distillation at normal pressure, such as ethers, esters, lower acid amides, and ketones. Chelates used for the purpose can be easily reconditioned and reused.
EFFECT: reduced amount of waste water in recovering of irradiated fuel.
3 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF IRRADIATED NUCLEAR FUEL TREATMENT | 2007 |
|
RU2366012C2 |
| METHOD FOR DECONTAMINATING SURFACES OF SOLID BODIES FROM INORGANIC POLLUTANTS INCLUDING RADIOACTIVE ONES | 1998 |
|
RU2153203C2 |
| METAL EXTRACTION PROCESS | 2003 |
|
RU2274486C2 |
| METAL SEPARATION METHOD | 2006 |
|
RU2322714C1 |
| METHOD FOR SUPERCRITICAL FLUIDIC EXTRACTION OF METALS | 1999 |
|
RU2168779C2 |
| COMPOSITION FOR CONVERSION OF SOLID FORMS OF ACTINOIDS AND RARE EARTH ELEMENTS INTO A SOLUBLE FORM | 2020 |
|
RU2755814C1 |
| ACTINIDE NITRATES PREPARATION METHOD (VARIATIONS) | 2005 |
|
RU2295789C1 |
| METHOD OF DECONTAMINATING MATERIALS | 2012 |
|
RU2501106C1 |
| METHOD OF OBTAINING INDIVIDUAL AND MIXED METAL OXIDES | 2013 |
|
RU2543086C1 |
| METHOD OF EXTRACTION SEPARATION OF CESIUM, STRONTIUM, TECHNETIUM, RARE-EARTH AND ACTINIDE ELEMENTS FROM LIQUID RADIOACTIVE RESIDUES | 1999 |
|
RU2180868C2 |
