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Title: 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:
 [1];  [2];  [1]
  1. Ames, IA
  2. Neveda, IA
Issue Date:
Research Org.:
Ames Lab., Ames, IA (United States); 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 C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
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 = {1991},
month = {12}
}

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