Compositions – Radioactive compositions
Patent
1985-11-14
1987-08-25
Miller, Edward A.
Compositions
Radioactive compositions
423 2, 423 18, 423166, G21F 900
Patent
active
046891781
ABSTRACT:
A method of obtaining magnesium sulfate substantially free from radioactive uranium from a slag containing the same and having a radioactivity level of at least about 7000 pCi/gm. The slag is ground to a particle size of about 200 microns or less. The ground slag is then contacted with a concentrated sulfuric acid under certain prescribed conditions to produce a liquid product and a solid product. The particulate solid product and a minor amount of the liquid is then treated to produce a solid residue consisting essentially of magnesium sulfate substantially free of uranium and having a residual radioactivity level of less than 1000 pCi/gm. In accordance with the preferred embodiment of the invention, a catalyst and an oxidizing agent are used during the initial acid treatment and a final solid residue has a radioactivity level of less than about 50 pCi/gm.
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Gay Richard L.
Grantham LeRoy F.
DeLarvin Clark E.
Field Harry B.
Hamann H. Fredrick
Miller Edward A.
Rockwell International Corporation
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