U.S. Department of EnergyOffice of Scientific and Technical Information
Method for magnesium sulfate recovery
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.
- Inventors:
-
- Canoga Park, CA
- Calabasas, CA
- Publication Date:
- Research Org.:
- Rockwell International Corp., Canoga Park, CA (United States)
- OSTI Identifier:
- 866353
- Patent Number(s):
- US 4689178
- Assignee:
- Rockwell International Corporation (El Segundo, CA)
- DOE Contract Number:
- AT03-83SF11948
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; magnesium; sulfate; recovery; obtaining; substantially; free; radioactive; uranium; slag; containing; radioactivity; level; 7000; pci; gm; ground; particle; size; 200; microns; contacted; concentrated; sulfuric; acid; prescribed; conditions; produce; liquid; product; solid; particulate; minor; amount; treated; residue; consisting; essentially; residual; 1000; accordance; preferred; embodiment; catalyst; oxidizing; agent; initial; treatment; final; 50; particulate solid; radioactivity level; slag containing; substantially free; consisting essentially; preferred embodiment; particle size; sulfuric acid; liquid product; solid residue; oxidizing agent; minor amount; solid product; concentrated sulfuric; magnesium sulfate; radioactive uranium; obtaining magnesium; oxidizing agen; /588/423/
Citation Formats
Gay, Richard L, and Grantham, LeRoy F. Method for magnesium sulfate recovery. United States: N. p., 1987.
Web.
Gay, Richard L, & Grantham, LeRoy F. Method for magnesium sulfate recovery. United States.
Gay, Richard L, and Grantham, LeRoy F. 1987.
"Method for magnesium sulfate recovery". United States. https://www.osti.gov/servlets/purl/866353.
@article{osti_866353,
title = {Method for magnesium sulfate recovery},
author = {Gay, Richard L and Grantham, LeRoy F},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/866353},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1987},
month = {Thu Jan 01 00:00:00 EST 1987}
}