Apparatus and method for reprocessing and separating spent...

Details Apparatus and method for reprocessing and separating spent... Apparatus and method for reprocessing and separating spent...

G - Physics

21

F

39/1, 53/190

G21F 9/30 (2006.01) C01B 21/06 (2006.01) G21C 19/48 (2006.01)

Patent

CA 1202787

APPARATUS AND METHOD FOR REPROCESSING AND SEPARATING SPENT NUCLEAR FUELS Abstract A method and apparatus for separating and reprocessing spent nuclear fuels includes a separation vessel housing a molten metal solvent in a reaction region, a reflux region positioned above and adjacent to the reaction region, and a porous filter member defining the bottom of the separation vessel in a supporting relationship with the metal solvent. Spent fuels are added to the metal solvent. A non-oxidizing nitrogen-containing gas is introduced into the separation vessel, forming solid actinide nitrides in the metal solvent from actinide fuels, while leaving other fission products in solution. A pressure of about 1.1 to 1.2 atm is applied in the reflux region, forcing the molten metal solvent and soluble fission products out of the vessel, while leaving the solid actinide nitrides in the separation vessel.

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