Granulation of potash materials

Details Granulation of potash materials Granulation of potash materials

1989-12-26

1992-07-07

Lovering, Richard D.

Chemistry: physical processes

Physical processes

Agglomerating

23313P, 71 6403, 71 6405, C05B 1900

Patent

active

H00010707

ABSTRACT:
A process for granulating finely divided particulate sulfate or chloride salts of potassium to produce therefrom agricultural products having exceptionally satisfactory physical and chemical properties in regard to bulk blending with other fertilizer blend materials and also in regard to storage and handling properties. The instant methods involve introducing fine-sized, particulate feedstock together with recycle material into a conventional granulator and granulating the solids with use of a water solution comprised of the potassium salt to be granulated and portions of lignosulfonate, which solution has been found to bind the solids material together in a manner and form highly desirable. Drying of the resulting granulation material is required. Nominal grades of the sulfate and chloride granular products are about 47 and 57 percent by weight K.sub.2 O equivalent, respectively.

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patent: 3984225 (1976-10-01), Sears et al.
patent: 4277253 (1981-07-01), Walter et al.
patent: 4743289 (1988-05-01), Mickus et al.
patent: 4846871 (1989-07-01), Detroit

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