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Publication numberUST101803 I4
Publication typeGrant
Application numberUS 06/287,399
Publication dateMay 4, 1982
Filing dateJul 27, 1981
Priority dateJul 27, 1981
Publication number06287399, 287399, US T101803 I4, US T101803I4, US-I4-T101803, UST101803 I4, UST101803I4
InventorsThomas M. Jones, Jeffrey L. Boles
Original AssigneeJones Thomas M, Boles Jeffrey L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Production of urea-ammonium sulfate suspension fertilizer
US T101803 I4
Abstract
A process for production of highly concentrated nitrogen sulfur suspension fertilizers, with excellent long-term storage and handling properties, from ammonia, sulfuric acid, and urea. Satisfactory operation of the process and production of high-quality suspensions requires the use of a novel cooling procedure. For prevention of scale formation and production of small crystals, the product is cooled in two or more stages with gelling type clay added prior to or during crystallization and with air cooling used in the cooling stage(s) involving crystallization.
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5135561 *Aug 22, 1991Aug 4, 1992Tennessee Valley AuthorityMixing water, base, gelling agent, ammonium sulfate; storing for further mixing with urea and/or ammonium nitrate to form fertilizer solution
WO2006004424A1 *Jun 30, 2005Jan 12, 2006Rune IngelsMethod for producing a fertilizer containing urea and ammonium sulphate
Classifications
U.S. Classification71/30, 71/64.09
International ClassificationC05C3/00, C05C13/00
Cooperative ClassificationC05C3/00
European ClassificationC05C3/00