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:
- Research Org.:
- Originating Research Org. not identified
- OSTI Identifier:
- 4830174
- Patent Number(s):
- 3037839
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
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}
}
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