Suppression of fines during the granulation of ammonium nitrate
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United States of America Patent
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-
Oct 13, 1992
Grant Date -
N/A
app pub date -
Apr 6, 1989
filing date -
Apr 9, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The formation of dust or fines may be suppressed, during the granulation of ammonium nitrate having a nitrogen content of 28% to 34.5%, by a process in which ammonium nitrate is initially granulated to form a raw granulate containing fines, and thereafter heated and contacted by a hydrated sulfate during a second granulation step wherein the fines are affixed to the raw granulate.
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