NITROGEN, CALCIUM, AND SULFUR-CONTAINING COMPLEX FERTILIZER MANUFACTURING PROCESS Russian patent published in 2007 - IPC C05G1/08 C05C1/02

Abstract RU 2306305 C1

FIELD: mineral fertilizers.

SUBSTANCE: ammonium nitrate melt is mixed with calcium-containing component and the mix is granulated and dried, said calcium-containing component being solid product obtained from treatment of naturally occurring calcium phosphate with sulfuric acid and/or ammonium sulfate in nitric acid, wherein calcium sulfate obtained is in dihydrate form. Granulation and drying are carried out under conditions allowing conversion of calcium sulfate dihydrate into hemihydrate salt.

EFFECT: increased strength of granules.

3 cl, 10 ex

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RU 2 306 305 C1

Authors

Sezemin Vladimir Alekseevich

Abramov Oleg Borisovich

Dates

2007-09-20—Published

2006-01-12—Filed