METHOD FOR PRODUCING MIXED URANIUM AND PLUTONIUM OXIDES Russian patent published in 2017 - IPC G21C3/00 G21C3/42 G21C19/42 C01G56/00 

FIELD: chemistry.

SUBSTANCE: method for producing mixed uranium and plutonium oxides involves mixing uranium and plutonium solutions in an unstabilized valence state, converting the master-mixture of uranium into a tetravalent form of plutonium into a trivalent form in the produced solution by reduction of a solid phase catalyst, stabilizing the resulting valence state of uranium and plutonium with the excess reducing agent and precipitating oxalates of tetravalent uranium and trivalent plutonium in weakly acid medium by simultaneous mixing the solutions of the master-mixture and hydrazine-hydrate with a solution of oxalic acid.

EFFECT: production of mixed uranium and plutonium oxides directly from the products of extraction processing of spent nuclear fuel, a high degree of homogenization of the resulting mixed oxides and the possibility of varying the sizes of the resulting grains.

25 cl, 2 ex