Magnesium fluoride recovery method

Details Magnesium fluoride recovery method Magnesium fluoride recovery method

1985-11-14

1989-10-17

Doll, John

Chemistry of inorganic compounds

Halogen or compound thereof

Binary fluorine containing compound

423 20, 423178, C01F 528

Patent

active

048745995

ABSTRACT:
A method of obtaining magnesium fluoride 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 contacted with an acid under certain prescribed conditions to produce a liquid product and a particulate solid product. The particulate solid product is separated from the liquid and treated at least two more times with acid to produce a solid residue consisting essentially of magnesium fluoride substantially free of uranium and having a residual radioactivity level of less than about 1000 pCi/gm. In accordance with a particularly preferred embodiment of the invention a catalyst and an oxidizing agent are used during the acid treatment and preferably the acid is sulfuric acid having a strength of about 1.0 Normal.

REFERENCES:
patent: 2733126 (1956-01-01), Spiegler
patent: 2914378 (1959-11-01), Kennedy

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