Process for the production of urea granules

US4525198A · kind A · utility

Assignee

• Compagnie Neerlandaise de l'Azote · BE

Inventors

• Willy H. P. Van Hijfte · Assenede, BE
• Luc Vanmarcke · Eeklo, BE

Key dates

• Filing date: Mar 11, 1983
• Grant date: Jun 25, 1985
• Expiry date: Mar 11, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C05C9/005
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The production of urea granules by prilling or granulating a urea melt or an aqueous urea solution, which melt or solution contains a magnesium oxide containing additive. The urea granules thus obtained exhibit a high crushing strength, a high apparent density, and a very low caking tendency, and are suitable for bulk blending with single and triple superphosphate granules.