METHOD OF PROCESSING URANIUM-GADOLINIUM-CONTAINING SCRAPS OF FUEL MANUFACTURE FROM URANIUM DIOXIDE

• Main Authors: STOLBOVA ELENA FEDOROVNA, JAROSHENKO NATAL'JA NIKOLAEVNA, BEZHETSKIJ SERGEJ VLADIMIROVICH, BIRJUKOVA ALLA GENNAD'EVNA, BIRJUKOV PETR BORISOVICH, ABRAMOV NIKOLAJ VASIL'EVICH, GOFMAN ANDREJ AL'BERTOVICH
• Format: Patent
• Language: English; Russian
• Published: 20.12.2008
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

FIELD: chemistry. ^ SUBSTANCE: method of processing uranium-gadolinium-containing scraps of fuel production from UO2 includes dissolving scrap in mineral acid, filtration of solution, extraction of uranium with tributylphosphate. In order to purify from admixtures, extragent in zone of extraction, mainly uranium-free, is taken to additional step of washing with solution of complexon or ammonium fluoride, after which it is returned to next in turn level of extraction. ^ EFFECT: smaller corrosion stress on equipment and reduced consumption of reagents. ^ 5 ex