FIELD: radiochemical technologies.
SUBSTANCE: group of inventions refers to radiochemical technology and can be used in the technology of processing spent nuclear fuel (SNF). Method for regenerating the spent extraction system based on the organic solution of tributyl phosphate in hexachlorobutadiene includes its treatment with a sorption-active solid-phase composition. Treatment of organic solution is carried out in two successive stages. In the first stage, treatment with aggregate-stable aqueous suspension containing hydrated zirconia in a dispersed phase is carried out. In second step, treatment with oxalate ion solution. There is also embodiment of method for regenerating a spent extraction system.
EFFECT: group of inventions allows to restore the operational characteristics of the spent extraction system (chemical and hydrodynamic) and return it to the technological cycle.
18 cl, 22 ex
| Title | Year | Author | Number |
|---|---|---|---|
| INSTALLATION FOR THE REGENERATION OF RADIATION-DEGRADED EXTRACTION MIXTURES | 2022 |
|
RU2781913C1 |
| METHOD OF IRRADIATED NUCLEAR FUEL TREATMENT | 2007 |
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RU2106030C1 |
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|
RU2713010C1 |
| METHOD OF SIMULATOR PREPARATION FOR SPENT NUCLEAR FUEL ACID DISSOLVING PRODUCTS CLARIFICATION PROCESSES DEVELOPMENT | 2015 |
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RU2607647C9 |
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|
RU2249266C2 |
| EXTRACTION MIXTURE FOR EXTRACTION OF ACTINIDES FROM NITRIC ACID SOLUTIONS | 2015 |
|
RU2620583C2 |
| WASTE NUCLEAR FUEL PROCESSING METHOD | 2014 |
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RU2560119C1 |
| METHOD FOR EXTRACTION ISOLATION OF TRANSPLUTONIUM AND RARE EARTH ELEMENTS | 2021 |
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RU2774155C1 |
