FREMGANGSMÅDE TIL SYREÆTSNING AF EN PHOSPHATKILDE

FREMGANGSMÅDE TIL SYREÆTSNING AF EN PHOSPHATKILDE

Process of acid attack with sulphuric acid of a phosphate source comprising calcium or not comprising calcium for a predetermined time period ranging from 20 to 180 minutes in the conditions wherein the molar ratio of sulphate from the sulphuric acid and possibly from the phosphate source to the cal...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WAVREILLE, Alexandre, NINANE, Léon
Format: Patent
Sprache:dan
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:Process of acid attack with sulphuric acid of a phosphate source comprising calcium or not comprising calcium for a predetermined time period ranging from 20 to 180 minutes in the conditions wherein the molar ratio of sulphate from the sulphuric acid and possibly from the phosphate source to the calcium present in the phosphate source ranges from 0.6 to 0.8, and the content in P2O5 in the attack tank is of less than 6%.