Process for making granules containing urea as the main...

Details Process for making granules containing urea as the main... Process for making granules containing urea as the main...

C - Chemistry, Metallurgy

07

C

71/23, 71/44

C07C 273/02 (2006.01)

Patent

CA 1173660

ABSTRACT OF THE DISCLOSURE A process for preparing granules, containing urea as the main component, from an aqueous urea solution having a urea concentration of at least 70 weight percent, the solution containing a crystallization retarder for the urea in solution. The process comprising: spraying the solution, in the form of droplets having an average diameter of from 20 to 120 microns, onto a fluidized bed of nuclei at a tem- perature at which water from the sprayed solution is evaporated and granules are formed on the nuclei. The process being characterized in that the crystallization retarder consists of a water-soluble, inorganic aluminum salt used in a quantity equivalent to at least 0.1 weight percent, calculated as Al2O3, relative to the solid content of the solution. In a preferred aspect the solution contains at least one other fertilizer in solution and/or suspension. The other fertilizer can be ammonium sulphate, ammonium dihydrogen phosphate, diammonium hydrogen phosphate or mixtures thereof.

405063

Affiliated with

Also associated with

Rating

Process for making granules containing urea as the main... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making granules containing urea as the main..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making granules containing urea as the main... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1182763