Apparatus for producing nitrate granules
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United States of America Patent
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Mar 12, 2013
Grant Date -
May 13, 2010
app pub date -
Jan 7, 2010
filing date -
Nov 26, 2002
priority date (Note) -
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Abstract
An apparatus for producing nitrate granules includes a first fluidized bed which is supplied with air that has been conditioned to a relative humidity of less than 30% at 40° C. and heated to a temperature of 40° C. to 100° C. One or more spray nozzles are provided for spraying a nitrate melt into the first fluidized bed to form nitrate granules. The apparatus also includes a second fluidized bed which is in direct communication with the first fluidized bed. Nitrate granules formed in the first fluidized bed flow directly to the second fluidized bed where they are cooled to a temperature of less than 60° C. The nitrate granules produced by the apparatus and process of the invention are spherical in shape, hard and dry and do not break down easily during handling. The apparatus according to the invention is compact, capable of very high product rates, and can be operated by one operator.
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