Conversion of depleted uranium hexafluoride to a solid uranium compound
Abstract
A process for converting UF.sub.6 to a solid uranium compound such as UO.sub.2 and CaF. The UF.sub.6 vapor form is contacted with an aqueous solution of NH.sub.4 OH at a pH greater than 7 to precipitate at least some solid uranium values as a solid leaving an aqueous solution containing NH.sub.4 OH and NH.sub.4 F and remaining uranium values. The solid uranium values are separated from the aqueous solution of NH.sub.4 OH and NH.sub.4 F and remaining uranium values which is then diluted with additional water precipitating more uranium values as a solid leaving trace quantities of uranium in a dilute aqueous solution. The dilute aqueous solution is contacted with an ion-exchange resin to remove substantially all the uranium values from the dilute aqueous solution. The dilute solution being contacted with Ca(OH).sub.2 to precipitate CaF.sub.2 leaving dilute NH.sub.4 OH.
- Inventors:
-
- Willowbrook, IL
- Lemont, IL
- Elmhurst, IL
- Naperville, IL
- Issue Date:
- Research Org.:
- EMRICH & DITHMAR
- OSTI Identifier:
- 874053
- Patent Number(s):
- 6303090
- Assignee:
- The United States of America as represented by the United States Department (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- DOE Contract Number:
- AC02-98CH10913
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- conversion; depleted; uranium; hexafluoride; solid; compound; process; converting; ufsub6; uosub2; caf; vapor; form; contacted; aqueous; solution; nhsub4; oh; ph; precipitate; values; leaving; containing; remaining; separated; diluted; additional; water; precipitating; trace; quantities; dilute; ion-exchange; resin; remove; substantially; caohsub2; cafsub2; aqueous solution; exchange resin; uranium values; ion-exchange resin; vapor form; /423/
Citation Formats
Rothman, Alan B, Graczyk, Donald G, Essling, Alice M, and Horwitz, E Philip. Conversion of depleted uranium hexafluoride to a solid uranium compound. United States: N. p., 2001.
Web.
Rothman, Alan B, Graczyk, Donald G, Essling, Alice M, & Horwitz, E Philip. Conversion of depleted uranium hexafluoride to a solid uranium compound. United States.
Rothman, Alan B, Graczyk, Donald G, Essling, Alice M, and Horwitz, E Philip. Mon .
"Conversion of depleted uranium hexafluoride to a solid uranium compound". United States. https://www.osti.gov/servlets/purl/874053.
@article{osti_874053,
title = {Conversion of depleted uranium hexafluoride to a solid uranium compound},
author = {Rothman, Alan B and Graczyk, Donald G and Essling, Alice M and Horwitz, E Philip},
abstractNote = {A process for converting UF.sub.6 to a solid uranium compound such as UO.sub.2 and CaF. The UF.sub.6 vapor form is contacted with an aqueous solution of NH.sub.4 OH at a pH greater than 7 to precipitate at least some solid uranium values as a solid leaving an aqueous solution containing NH.sub.4 OH and NH.sub.4 F and remaining uranium values. The solid uranium values are separated from the aqueous solution of NH.sub.4 OH and NH.sub.4 F and remaining uranium values which is then diluted with additional water precipitating more uranium values as a solid leaving trace quantities of uranium in a dilute aqueous solution. The dilute aqueous solution is contacted with an ion-exchange resin to remove substantially all the uranium values from the dilute aqueous solution. The dilute solution being contacted with Ca(OH).sub.2 to precipitate CaF.sub.2 leaving dilute NH.sub.4 OH.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}