METHOD OF GRANULATED SUPERPHOSPHATE PRODUCING

METHOD OF GRANULATED SUPERPHOSPHATE PRODUCING

FIELD: fertilizers. SUBSTANCE: invention relates to processing dolomitized phosphate raw containing 26-28% P2O5 and 2.5-3% MgO (as measured for granulated superphosphate). After preliminary classification stage the large raw fraction at ratio solid : liquid = (1.04-1.85):1 is treated with sulfuric a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DMITREVSKIJ B.A, FILIMONOV A.A, TREUSHCHENKO N.N, JUR'EVA V.I, FEDOTOV I.JU, DEGTJAREV I.K
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERTILISERS
MANUFACTURE THEREOF
METALLURGY
PHOSPHATIC FERTILISERS
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Beschreibung
Zusammenfassung:FIELD: fertilizers. SUBSTANCE: invention relates to processing dolomitized phosphate raw containing 26-28% P2O5 and 2.5-3% MgO (as measured for granulated superphosphate). After preliminary classification stage the large raw fraction at ratio solid : liquid = (1.04-1.85):1 is treated with sulfuric acid. For neutralization small fraction of phosphate raw (particle size is 0.02-0.1 mm) is fed. Ready product has at least 15% P2O5 at 1.5-1.7% bound P2O5. EFFECT: intensified process, decreased energy consumption. 2 tblm