METHOD OF PRODUCING AMMONIUM SULFATE-PHOSPHATE FERTILIZER

FIELD: production of complex fertilizers, in particular, nitrogen-phosphorus-ammonium sulfate-phosphate fertilizer. SUBSTANCE: method includes neutralization of phosphoric and sulfuric acids with ammonia; granulation and drying of ready-made product. Sulfuric acid with concentration of 70-93% is sup...

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Hauptverfasser:	IVANOVA N.JA, DMITREVSKIJ B.A, FILIMONOV A.A, DREMOV A.V, TREUSHCHENKO N.N, JUR'EVA V.I, SHVETSOV O.V
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
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Beschreibung
Zusammenfassung:	FIELD: production of complex fertilizers, in particular, nitrogen-phosphorus-ammonium sulfate-phosphate fertilizer. SUBSTANCE: method includes neutralization of phosphoric and sulfuric acids with ammonia; granulation and drying of ready-made product. Sulfuric acid with concentration of 70-93% is supplied to zone of neutralization of phosphoric acid with pH 4.6-5.8. Fertilizer characteristics is the following: hygroscopic coefficient, 1: composition of ready-made product: assimilation % of P2O5, 20-31; N, 15-17.14; N : P2O5 = 0.48-0.86. EFFECT: preserved high physical properties of fertilizer with reduced process duration. 1 tbl