METHOD OF PRODUCING GRANULATED AMMONIATED SUPERPHOSPHATE

METHOD OF PRODUCING GRANULATED AMMONIATED SUPERPHOSPHATE

FIELD: mineral fertilizers. SUBSTANCE: granulated ammoniated superphosphate is prepared by decomposing dolomitized phosphate material by sulfuric acid, neutralizing slurry by remaining part of phosphate material, and granulating and drying final product. Method is distinguished by conducting slurry...

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Hauptverfasser: KOSTJUZHEVA M.G, DMITREVSKIJ B.A, FILIMONOV A.A, DREMOV A.V, TREUSHCHENKO N.N, JUR'EVA V.I, SHVETSOV O.V
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERTILISERS
MANUFACTURE THEREOF
METALLURGY
PHOSPHATIC FERTILISERS
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Zusammenfassung:FIELD: mineral fertilizers. SUBSTANCE: granulated ammoniated superphosphate is prepared by decomposing dolomitized phosphate material by sulfuric acid, neutralizing slurry by remaining part of phosphate material, and granulating and drying final product. Method is distinguished by conducting slurry neutralization operation in two steps: first by phosphate material at pH 2-2.5 and then by ammonia-containing regent to pH 2.8-3.5. EFFECT: enhanced process efficiency. 1 tbln