Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1994-02-07
1996-01-09
Mai, Ngoclan
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423251, B01F 100
Patent
active
054826888
ABSTRACT:
A two-step process for dissolving plutonium metal, which two steps can be carried out sequentially or simultaneously. Plutonium metal is exposed to a first mixture containing approximately 1.0M-1.67M sulfamic acid and 0.0025M-0.1M fluoride, the mixture having been heated to a temperature between 45.degree. C. and 70.degree. C. The mixture will dissolve a first portion of the plutonium metal but leave a portion of the plutonium in an oxide residue. Then, a mineral acid and additional fluoride are added to dissolve the residue. Alteratively, nitric acid in a concentration between approximately 0.05M and 0.067M is added to the first mixture to dissolve the residue as it is produced. Hydrogen released during the dissolution process is diluted with nitrogen.
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Fink Samuel D.
Holcomb H. Perry
Karraker David G.
Moore Edwin N.
Vest Michael A.
Dixon Harold M.
Mai Ngoclan
Moser William R.
The United States of America as represented by the United States
Tumm Brian R.
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