Method for producing urea fertilizer with low moisture absorption tendencies
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United States of America Patent
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Feb 3, 2015
Grant Date -
Dec 5, 2013
app pub date -
Aug 31, 2011
filing date -
Sep 15, 2010
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Abstract
A method for producing urea granules having low moisture absorption capacity, with a urea granulator, having a granule flow inlet side and oppositely a granule flow outlet side, forming an axis alongside which granules from a urea solution and a urea/ammonium salt-stream are formed, whereby the solution and the salt-stream are sprayed as a mixture or separately via a feed system unit via various nozzles into the granulator onto a seed material. In this process the highest amount of the salt-stream is sprayed into the granulator at the granule flow inlet side and the amount of the salt-stream is decreased alongside the axis of the granulator from the granule flow inlet side to the granule flow outlet side.
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