UO.sub.2 pellet fabrication process
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United States of America Patent
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-
May 14, 1991
Grant Date -
N/A
app pub date -
Jan 13, 1989
filing date -
May 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Making uranium dioxide pellets of controlled grain size by treating 50-500 g/l UO.sub.2 F.sub.2 with NH.sub.3 in a first and a second stages to form (NH.sub.4).sub.2 U.sub.2 O.sub.7 precipitate, wherein the NH.sub.3 /U molar ratio is between 3-5 in the first stage and between 6-12 in the second stage. The precipitate is then formed into UO.sub.2 pellets having grain size within the range from 10 to 100 .mu.m.
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