Process for producing fertilizer granules

Details Process for producing fertilizer granules Process for producing fertilizer granules

1990-12-11

1992-06-09

Lander, Ferris

Chemistry: fertilizers

Processes and products

Organic material-containing

71 63, 71 6402, 71 6403, 71 6405, 71 6406, C05C 900, C05C 1300

Patent

active

051203456

ABSTRACT:
A process for producing fertilizer granules containing urea and ammonium sulphate by granulation in a fluidized bed of particles is described. Ammonium sulphate particles are introduced into a fluidized bed and urea is applied to the particles in the fluidized bed by spraying an aqueous urea-containing liquid with a urea concentration of 70-99.9% by weight. Preferably, the aqueous urea solution contains a granulation additive and/or ammonium sulphate.

REFERENCES:
patent: 3725029 (1973-04-01), Blackmore
patent: 3738821 (1973-06-01), Barker
patent: 3785796 (1974-01-01), Mann, Jr.
patent: 4943308 (1990-07-01), Van Marcke et al.

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