METHOD FOR RECOVERING SPENT NUCLEAR FUEL (ALTERNATIVES), Np(VI)-\lang1033\f1 TO\lang1049\f0 -Np(V) REDUCER, Pu(IV)-TO-Pu(III) REDUCER, AND JOINED Np(VI)-TO-Np(V) AND Pu(IV)-TO- (Pu(III) REDUCER Russian patent published in 2004 - IPC

FIELD: nuclear fuel recovery. SUBSTANCE: method includes bringing Np(VI) containing organic phase in contact with oxime of R₂C=NOH formula. Each R independently means H or organic substituent. Method also includes bringing U, Pu, and Np containing organic phase in contact with oxime of formula R₂C=NOH, where each R independently means H or organic substituent. Oxime reduces Pu(IV) to Pu(III) and Np(VI) to Np(V) and Pu(III).Oxime of formula R₂C=NOH is used for reducing Np(VI) to Np(V). Oxime of formula R₂C=NOH is used to reduce Pu(IV) to Pu(III). Oxime of formula R₂C=NOH is used for joint reduction of Np(VI) to NP(V) and Pu(IV) to Pu(III). EFFECT: enhanced efficiency of uranium separation from plutonium and neptunium. 19 cl, 1 dwg, 5 tbl, 3 ex