Method for magnesium sulfate recovery
- Canoga Park, CA
- Calabasas, CA
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.
- Research Organization:
- Rockwell International Corp
- DOE Contract Number:
- AT03-83SF11948
- Assignee:
- Rockwell International Corporation (El Segundo, CA)
- Patent Number(s):
- US 4689178
- OSTI ID:
- 866353
- Country of Publication:
- United States
- Language:
- English
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