Granulated fertilizer and slurry process therefor

Details Granulated fertilizer and slurry process therefor Granulated fertilizer and slurry process therefor

1983-12-15

1985-07-09

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Inorganic material

71 44, 423319, C05B 102

Patent

active

045280215

ABSTRACT:
A continuous process for the production of a granulated fertilizer wherein comminuted phosphate rock, phosphoric acid and water are introduced into a pre-reactor where they are heated. The mixture is continuously withdrawn and transferred to a digester where heating is continued resulting in formation of a slurry. The slurry is continuously withdrawn and is split into two streams, one of which is recycled to either the pre-reactor or to the digester while the other stream is delivered to a granulator where it is mixed with other fertilizer ingredients and dried to form the granulated fertilizer.

REFERENCES:
patent: 2598658 (1952-05-01), Procter et al.
patent: 2937937 (1960-05-01), Dunbar
patent: 3431096 (1969-03-01), Hill et al.
patent: 3868243 (1975-02-01), MacDonald
Yarnell, J. J.: "No Longer Mud Chemistry", Phosphorus & Potassium, No. 80, Nov./Dec. 1975, The British Sulphur Corp. Ltd.

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