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Title: PREPARATION OF UO$sub 2$ FOR NUCLEAR REACTOR FUEL PELLETS

Abstract

A method is given for preparing high-density UO/sub 2/ compacts. An aqueous uranyl fluoride solution is contacted with an aqueous ammonium hydroxide solution at an ammonium to-uranium ratio of 25: 1 to 30:1 to form a precipitate. The precipitate is separated from the- mother liquor, dried, and contacted with steam at a uniform temperature within the range of 400 to 650 deg C to produce U/ sub 3/O/sub 8/. The U/sub 3/O/sub 8/ is red uced to UO/sub 2/ with hydrogen at a uniform temperature within the range of 550 to 600 deg C. The UO/sub 2/ is then compressed into compacts and sintered. High-density compacts are fabricated to close tolerances without use of a binder and without machining or grinding. (AEC)

Inventors:
Issue Date:
OSTI Identifier:
4830174
Patent Number(s):
3037839
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
NSA Number:
NSA-16-019327
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
United States
Language:
English
Subject:
METALS, CERAMICS, AND OTHER MATERIALS; AMMONIUM COMPOUNDS; CHEMICAL REACTIONS; COMPACTING; DENSITY; EVAPORATION; FLUORIDES; HYDROXIDES; PELLETS; PRECIPITATION; PREPARATION; REDUCTION; SEPARATION PROCESSES; SINTERING; SOLUTIONS; STANDARDS; STEAM; U3O8; URANIUM DIOXIDE; URANYL COMPOUNDS

Citation Formats

Googin, J M. PREPARATION OF UO$sub 2$ FOR NUCLEAR REACTOR FUEL PELLETS. United States: N. p., 1962. Web.
Googin, J M. PREPARATION OF UO$sub 2$ FOR NUCLEAR REACTOR FUEL PELLETS. United States.
Googin, J M. Fri . "PREPARATION OF UO$sub 2$ FOR NUCLEAR REACTOR FUEL PELLETS". United States.
@article{osti_4830174,
title = {PREPARATION OF UO$sub 2$ FOR NUCLEAR REACTOR FUEL PELLETS},
author = {Googin, J M},
abstractNote = {A method is given for preparing high-density UO/sub 2/ compacts. An aqueous uranyl fluoride solution is contacted with an aqueous ammonium hydroxide solution at an ammonium to-uranium ratio of 25: 1 to 30:1 to form a precipitate. The precipitate is separated from the- mother liquor, dried, and contacted with steam at a uniform temperature within the range of 400 to 650 deg C to produce U/ sub 3/O/sub 8/. The U/sub 3/O/sub 8/ is red uced to UO/sub 2/ with hydrogen at a uniform temperature within the range of 550 to 600 deg C. The UO/sub 2/ is then compressed into compacts and sintered. High-density compacts are fabricated to close tolerances without use of a binder and without machining or grinding. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1962},
month = {6}
}