Production of citrate soluble phosphates by calcination of secondary phosphate sources with a sodium-sulfuric compound

Production of citrate soluble phosphates by calcination of secondary phosphate sources with a sodium-sulfuric compound

A method of calcination includes providing a raw material including whitlockite Ca9(Mg,Fe2+)[PO3(OH)|(PO4)6], and/or iron phosphate FePO4, and/or aluminum phosphate AlPO4 and/or fluorapatite Ca5(PO4)3F; providing an alkaline-sulfuric compound as an additive; and calcining a mixture of the raw materi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Adam, Christian, Hermann, Ludwig, Stemann, Jan
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
FERTILISERS
INORGANIC CHEMISTRY
MANUFACTURE THEREOF
METALLURGY
NON-METALLIC ELEMENTS
PHOSPHATIC FERTILISERS
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Beschreibung
Zusammenfassung:A method of calcination includes providing a raw material including whitlockite Ca9(Mg,Fe2+)[PO3(OH)|(PO4)6], and/or iron phosphate FePO4, and/or aluminum phosphate AlPO4 and/or fluorapatite Ca5(PO4)3F; providing an alkaline-sulfuric compound as an additive; and calcining a mixture of the raw material with the additive to obtain a product, including a citrate soluble phosphate compound.