FIELD: processing and recycling wastes; nuclear physics.
SUBSTANCE: invention relates to processing of irradiated nuclear fuel. Method of processing irradiated nuclear fuel includes voloxidation of fuel, removal of fuel of molybdenum, technetium and ruthenium, dilution of fuel. Removal of molybdenum, technetium and ruthenium is performed with hydrogen peroxide alkaline percolation. Percolation comprises preliminary operations of processing voloxidated fuel wit aqueous hydrogen peroxide solution, separation of liquid (L) and solid (S) phases, washing solid phase with water, separation of liquid and solid phases, processing of solid phase with aqueous sodium hydroxide solution, separation of liquid and solid phases, washing solid phase with water and separating liquid and solid phases.
EFFECT: invention increases extraction of molybdenum, technetium and ruthenium from irradiated nuclear fuel until its dissolution.
4 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PLATINUM GROUP METALS EXTRACTING FROM VOLOXIDIZED SNF ACID DISSOLVING PRODUCT | 2015 |
|
RU2607644C2 |
| METHOD OF OXIDATING TREATMENT (VOLOXIDIATION) OF IRRADIATED NUCLEAR FUEL | 2017 |
|
RU2654536C1 |
| METHOD OF PROCESSING HIGH-ACTIVITY WASTE WITH FRACTIONATION OF RADIONUCLIDES | 2019 |
|
RU2709826C1 |
| METHOD FOR EXTRACTING METALS OF PLATINUM GROUP FROM SEDIMENTS AFTER CLARIFYING ACID DISSOLUTION PRODUCT OF VOLOXIDISED SPENT NUCLEAR FUEL | 2016 |
|
RU2632498C2 |
| METOD OF PROCESSING SPENT NUCLEAR FUEL | 2008 |
|
RU2382425C1 |
| METHOD OF DISSOLVING VOLOXIDATED IRRADIATED NUCLEAR FUEL | 2016 |
|
RU2626764C1 |
| IRRADIATED NUCLEAR FUEL EXTRACTION PROCESSING METHOD | 2020 |
|
RU2727140C1 |
| METHOD OF SIMULATOR PREPARATION FOR SPENT NUCLEAR FUEL ACID DISSOLVING PRODUCTS CLARIFICATION PROCESSES DEVELOPMENT | 2015 |
|
RU2607647C9 |
| PROCESSING METHOD OF IRRADIATED NUCLEAR FUEL OF NUCLEAR POWER PLANTS | 2010 |
|
RU2454741C1 |
| METHOD TO SEPARATE URANIUM AND PLUTONIUM IN EXTRACTION TECHNOLOGY OF SPENT NUCLEAR FUEL RECYCLING | 2010 |
|
RU2449393C2 |
