Process for the production of urea granules

Details Process for the production of urea granules Process for the production of urea granules

B - Operations, Transporting

01

J

B01J 2/16 (2006.01) B01J 2/28 (2006.01) C05C 9/00 (2006.01) C05G 5/00 (2006.01)

Patent

CA 2141874

The invention is directed to a process for the production of urea granules from a melt or solution of urea by spraying the urea melt or solution, which also contains as granulation additive formaldehyde, methylolureum, urea-formaldehyde preconden- sates, or hexamethylenetetramine, in the form of very fine droplets into a fluidized bed of urea particles, in which process the granulation additive is added prior to the granulation at such a stage, that the mixture of the said granulation additive and the urea melt or solution has a contact time of at least 20 s, but not more than 20 min.

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