FIELD: inorganic synthesis.
SUBSTANCE: invention, in particular, relates to preparing nitrate salts of uranium and actinides and provides alternative way for transforming starting materials, containing oxides of uranium and other nuclear materials into hydrated nitrates, i.e. products convenient for further processing. Preparation of hydrated actinide nitrates is accomplished via direct reaction of actinide oxides with nitrogen tetraoxide/water mixture in sealed container at overpressure 0.5-1.0 MPa and temperature 100-140°C or with liquid tetraoxide/water/carbon dioxide mixture at pressure 7.0 MPa and 10-75°C.
EFFECT: enabled simple and convenient oxide conversion method with degree of conversion.
2 cl, 3 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF IRRADIATED NUCLEAR FUEL TREATMENT | 2007 |
|
RU2366012C2 |
| METHOD OF PRODUCING ACTINIDE NITRATES | 2009 |
|
RU2446493C2 |
| METHOD OF OBTAINING INDIVIDUAL AND MIXED METAL OXIDES | 2013 |
|
RU2543086C1 |
| METHOD OF DISSOLVING VOLOXIDATED IRRADIATED NUCLEAR FUEL | 2016 |
|
RU2626763C1 |
| EXTRACTION MIXTURE FOR SUPERCRITICAL EXTRACTION OF ACTINIDE OXIDES | 2005 |
|
RU2295788C1 |
| METHOD FOR OBTAINING SOLID SOLUTIONS OF OXIDES OF ACTINIDES | 2012 |
|
RU2494479C1 |
| METHOD OF DISSOLVING VOLOXIDATED IRRADIATED NUCLEAR FUEL | 2016 |
|
RU2626764C1 |
| COMPOSITION FOR CONVERSION OF SOLID FORMS OF ACTINOIDS AND RARE EARTH ELEMENTS INTO A SOLUBLE FORM | 2020 |
|
RU2755814C1 |
| METHOD OF PRODUCING POROUS NUCLEAR FUEL | 2012 |
|
RU2612659C2 |
| PROCESS FOR PREPARING A POWDER COMPRISING A SOLID SOLUTION OF URANIUM DIOXIDE AND OF A DIOXIDE OF AT LEAST ONE OTHER ACTINIDE AND/OR LANTHANIDE ELEMENT | 2014 |
|
RU2662526C2 |
