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Title: Magnesium fluoride recovery method

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.

Inventors:
 [1];  [2]
  1. (Canoga Park, CA)
  2. (Woodland Hills, CA)
Publication Date:
Research Org.:
ROCKWELL INTERNATIONAL CORP
OSTI Identifier:
867137
Patent Number(s):
US 4874599
Assignee:
Rockwell International Corporation (El Segundo, CA) OSTI
DOE Contract Number:  
AT03-83SF11948
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
magnesium; fluoride; recovery; method; obtaining; substantially; free; radioactive; uranium; slag; containing; radioactivity; level; 7000; pci; gm; ground; particle; size; 200; microns; contacted; acid; prescribed; conditions; produce; liquid; product; particulate; solid; separated; treated; times; residue; consisting; essentially; residual; 1000; accordance; particularly; preferred; embodiment; catalyst; oxidizing; agent; treatment; preferably; sulfuric; strength; normal; recovery method; magnesium fluoride; particularly preferred; particulate solid; radioactivity level; slag containing; substantially free; consisting essentially; preferred embodiment; particle size; sulfuric acid; liquid product; solid residue; oxidizing agent; solid product; radioactive uranium; obtaining magnesium; oxidizing agen; /423/

Citation Formats

Gay, Richard L., and McKenzie, Donald E. Magnesium fluoride recovery method. United States: N. p., 1989. Web.
Gay, Richard L., & McKenzie, Donald E. Magnesium fluoride recovery method. United States.
Gay, Richard L., and McKenzie, Donald E. Sun . "Magnesium fluoride recovery method". United States. https://www.osti.gov/servlets/purl/867137.
@article{osti_867137,
title = {Magnesium fluoride recovery method},
author = {Gay, Richard L. and McKenzie, Donald E.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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