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Title: Production of sintered porous metal fluoride pellets

Abstract

Porous pellets characterized by a moderately reactive crust and a softer core of higher reactivity are produced by forming agglomerates containing a metal fluoride powder and a selected amount ofwater. The metal fluoride is selected to be sinterable and essentially non-reactive with gaseous fluorinating agents. The agglomerates are contacted with a gaseous fluorinating agent under controlled conditions whereby the heat generated by localized reaction of the agent and water is limited to values effccting bonding by localized sintering. Porous pellets composed of cryolite (Na/sub 3/AlF/sub 6/) can be used to selectively remove trace quantities of niobium pentafluoride from a feed gas consisting predominantly of uranium hexafluoride. (Official Gazette)

Inventors:
;
Issue Date:
OSTI Identifier:
4301191
Patent Number(s):
3781392
Assignee:
to United States Atomic Energy Commission
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 C01D - COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
NSA Number:
NSA-29-029080
Resource Type:
Patent
Resource Relation:
Patent File Date: 1971 Oct 01; Other Information: B01j1/22. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N40210* -Chemistry-Inorganic, Organic, & Physical Chemistry-Chemical & Physiochemical Properties; *ALKALI METAL COMPOUNDS- MATERIALS WORKING; *ALKALINE EARTH METAL COMPOUNDS- MATERIALS WORKING; *ALUMINIUM FLUORIDES- MATERIALS WORKING; *BISMUTH FLUORIDES- MATERIALS WORKING; *COPPER FLUORIDES- MATERIALS WORKING; *FLUORIDES- MATERIALS WORKING; *MAGNESIUM FLUORIDES- MATERIALS WORKING; *NICKEL FLUORIDES- MATERIALS WORKING; *POTASSIUM FLUORIDES- MATERIALS WORKING; *SILICON FLUORIDES- MATERIALS WORKING; *SODIUM FLUORIDES- MATERIALS WORKING; *ZIRCONIUM FLUORIDES- MATERIALS WORKING; ADSORPTION; NIOBIUM FLUORIDES; POWDER METALLURGY; PURIFICATION; SINTERING; TRACE AMOUNTS; URANIUM HEXAFLUORIDE

Citation Formats

Anderson, L W, and Stephenson, M J. Production of sintered porous metal fluoride pellets. United States: N. p., 1973. Web.
Anderson, L W, & Stephenson, M J. Production of sintered porous metal fluoride pellets. United States.
Anderson, L W, and Stephenson, M J. Tue . "Production of sintered porous metal fluoride pellets". United States.
@article{osti_4301191,
title = {Production of sintered porous metal fluoride pellets},
author = {Anderson, L W and Stephenson, M J},
abstractNote = {Porous pellets characterized by a moderately reactive crust and a softer core of higher reactivity are produced by forming agglomerates containing a metal fluoride powder and a selected amount ofwater. The metal fluoride is selected to be sinterable and essentially non-reactive with gaseous fluorinating agents. The agglomerates are contacted with a gaseous fluorinating agent under controlled conditions whereby the heat generated by localized reaction of the agent and water is limited to values effccting bonding by localized sintering. Porous pellets composed of cryolite (Na/sub 3/AlF/sub 6/) can be used to selectively remove trace quantities of niobium pentafluoride from a feed gas consisting predominantly of uranium hexafluoride. (Official Gazette)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1973},
month = {12}
}