METHOD FOR PRODUCING GRANULATED SUPERPHOSPHATE Russian patent published in 2017 - IPC C05B1/00 C05B11/10 

FIELD: agriculture.

SUBSTANCE: method for producing granulated superphosphate involves mixing the phosphate raw material with phosphoric acid, followed by granulating, drying and the classification of the product, wherein the phosphate feed is mixed with phosphoric acid at room temperature for 1-3 minutes, in the presence of a recycle and water, wherein the phosphoric acid consumption in terms of 100% P₂O₅ is maintained within the range of (0.17-0.23) tonnes per ton of phosphate flour, and the product is granulated at the humidity of 10-15%.

EFFECT: invention allows to obtain granulated superphosphate, stable by its fractional composition and quality, with a sufficiently high strength of the granules.

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