Method for magnesium sulfate recovery
A method is described for obtaining magnesium sulfate substantially free from radioactive uranium from a slag containing the same and having a radioactivity level of at least about 7,000 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 1,000 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., Canoga Park, CA (United States)
- DOE Contract Number:
- AT03-83SF11948
- Assignee:
- Rockwell International Corp., El Segundo, CA (United States)
- Patent Number(s):
- US 4689178; A
- Application Number:
- PPN: US 6-798075
- OSTI ID:
- 7262217
- Resource Relation:
- Patent File Date: 14 Nov 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
MAGNESIUM SULFATES
MATERIALS RECOVERY
SLAGS
RADIOACTIVE WASTE PROCESSING
URANIUM
ACID HYDROLYSIS
ACTIVITY LEVELS
CATALYSTS
COMMINUTION
OXIDIZERS
ACTINIDES
ALKALINE EARTH METAL COMPOUNDS
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HYDROLYSIS
LYSIS
MAGNESIUM COMPOUNDS
MANAGEMENT
METALS
OXYGEN COMPOUNDS
PROCESSING
RADIOACTIVE WASTE MANAGEMENT
SOLVOLYSIS
SULFATES
SULFUR COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
052001* - Nuclear Fuels- Waste Processing