Rare earth/iron fluoride and methods for making and using same
Abstract
A particulate mixture of Fe.sub.2 O.sub.3 and RE.sub.2 O.sub.3, where RE is a rare earth element, is reacted with an excess of HF acid to form an insoluble fluoride compound (salt) comprising REF.sub.3 and FeF.sub.3 present in solid solution in the REF.sub.3 crystal lattice. The REF.sub.3 /FeF.sub.3 compound is dried to render it usable as a reactant in the thermite reduction process as well as other processes which require an REF.sub.3 /FeF.sub.3 mixture. The dried REF.sub.3 /FeF.sub.3 compound comprises about 5 weight % to about 40 weight % of FeF.sub.3 and the balance REF.sub.3 to this end.
- Inventors:
-
- Ames, IA
- Neveda, IA
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- OSTI Identifier:
- 868091
- Patent Number(s):
- 5073337
- Application Number:
- 07/554,189
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- 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:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- rare; earth; iron; fluoride; methods; particulate; mixture; element; reacted; excess; hf; acid; form; insoluble; compound; salt; comprising; fef; solid; solution; crystal; lattice; dried; render; usable; reactant; thermite; reduction; process; processes; require; comprises; weight; 40; balance; rare earth; solid solution; reduction process; crystal lattice; particulate mixture; earth element; thermite reduction; /420/423/
Citation Formats
Schmidt, Frederick A, Wheelock, John T, and Peterson, David T. Rare earth/iron fluoride and methods for making and using same. United States: N. p., 1991.
Web.
Schmidt, Frederick A, Wheelock, John T, & Peterson, David T. Rare earth/iron fluoride and methods for making and using same. United States.
Schmidt, Frederick A, Wheelock, John T, and Peterson, David T. Tue .
"Rare earth/iron fluoride and methods for making and using same". United States. https://www.osti.gov/servlets/purl/868091.
@article{osti_868091,
title = {Rare earth/iron fluoride and methods for making and using same},
author = {Schmidt, Frederick A and Wheelock, John T and Peterson, David T},
abstractNote = {A particulate mixture of Fe.sub.2 O.sub.3 and RE.sub.2 O.sub.3, where RE is a rare earth element, is reacted with an excess of HF acid to form an insoluble fluoride compound (salt) comprising REF.sub.3 and FeF.sub.3 present in solid solution in the REF.sub.3 crystal lattice. The REF.sub.3 /FeF.sub.3 compound is dried to render it usable as a reactant in the thermite reduction process as well as other processes which require an REF.sub.3 /FeF.sub.3 mixture. The dried REF.sub.3 /FeF.sub.3 compound comprises about 5 weight % to about 40 weight % of FeF.sub.3 and the balance REF.sub.3 to this end.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 17 00:00:00 EST 1991},
month = {Tue Dec 17 00:00:00 EST 1991}
}
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