Patent ID: 7029504
Filing Date: 2006-04-18
Classification: B01J,C01C,C01P,C05C

Abstract:
1. A process for producing calcium nitrate granules, the process including the steps of: preparing a calcium nitrate melt having a free moisture content of 10%–15%; vial spraying the melt into a re-circulating bed of a first fluidized bed granulator, wherein the re-circulating bed is supplied with air that has been conditioned to a relative humidity of less than 30% at 40° C. and heated to a temperature between 60° C. and 100° C. to form calcium nitrate granules; and cooling the calcium nitrate granules in a second fluidized bed to a temperature of from 50° C. to 60° C. and recycling a portion of the cooled granules to the first fluidized bed granulator, as seeding particles.