Ammonium nitrate granule and method for the preparation of the same
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United States of America Patent
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Feb 7, 2012
Grant Date -
May 1, 2008
app pub date -
Feb 24, 2006
filing date -
Feb 25, 2005
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Abstract
The invention relates to a fertilizer granule containing ammonium nitrate, comprising a core containing ammonium nitrate and a coating layer containing calcium sulphate. The coating layer consists of a mixture containing calcium sulphate and ammonium nitrate. Such a fertilizer granule is preferably produced by contacting the core with an aqueous ammonium nitrate solution and solid calcium sulphate particles, either as a slurry or separately. The production of the fertilizer granule is safe and easy.
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