Process for granulation of fertilizer materials

Details Process for granulation of fertilizer materials Process for granulation of fertilizer materials

1983-10-19

1985-11-19

Rosenbaum, Mark

Chemistry: fertilizers

Processes and products

Organic material-containing

71 6404, 71 6407, 241 21, 241 23, B02C 1912, C05B 1500

Patent

active

045540047

ABSTRACT:
A process for preparing granulated fertilizer materials, wherein urea phosphate is used as a granulating agent to assist in the agglomeration of finely divided solid particles into relatively uniformly sized granules. Urea phosphate, prepared by dissolving urea in phosphoric acid, is coated onto finely divided particles of fertilizer materials, and granulation is accomplished at a temperature within the thermoplastic range of the urea phosphate, wherein the urea phosphate plasticizes and induces adherence of the fine particles into relatively uniformly sized granules. Optionally, ammonia gas, clay, or micro nutrients may be added after granulation.

REFERENCES:
patent: T102201 (1982-09-01), Harrison
patent: T900018 (1972-07-01), Lee et al.
patent: 3539329 (1970-11-01), Wilson
patent: 3725029 (1973-04-01), Blackmore
patent: 3738821 (1973-06-01), Barber
patent: 4134750 (1979-01-01), Norton et al.
patent: 4175943 (1979-11-01), Jordaan et al.
patent: 4277253 (1981-07-01), Walter et al.
patent: 4305748 (1981-12-01), Bechthold et al.

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