Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1991-10-03
1992-08-25
Hunt, Brooks H.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423 211, 423 22, 423 23, 423250, 423251, 423253, 423155, 423179, 252627, 75395, 75397, 75399, 204 15, C22B 6002
Patent
active
051417235
ABSTRACT:
A process of separating transuranium actinide values from uranium values present in spent nuclear oxide fuels containing rare earth and noble metal fission products as well as other fission products is disclosed. The oxide fuel is reduced with Ca metal in the presence of Ca chloride and a U-Fe alloy which is liquid at about 800.degree. C. to dissolve uranium metal and the noble metal fission product metals and transuranium actinide metals and rare earth fission product metals leaving Ca chloride having CaO and fission products of alkali metals and the alkali earth metals and iodine dissolved therein. The Ca chloride and CaO and the fission products contained therein are separated from the U-Fe alloy and the metal values dissolved therein. The U-Fe alloy having dissolved therein reduced metals from the spent nuclear fuel is contacted with a mixture of one or more alkali metal or alkaline earth metal halides selected from the class consisting of alkali metal or alkaline earth metal and Fe or U halide or a combination thereof to transfer transuranium actinide metals and rare earth metals to the halide salt leaving the uranium and some noble metal fission products in the U-Fe alloy and thereafter separating the halide salt and the transuranium metals dissolved therein from the U-Fe alloy and the metals dissolved therein.
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Ackerman John P.
Battles James E.
Johnson Terry R.
Miller William E.
Pierce R. Dean
Anderson Thomas G.
Hunt Brooks H.
Mai Ngoclan T.
Moser William R.
The United States of America as represented by the United States
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