Method of decreasing the organic substance content of alum earth production cycle performed according to the Bayer technology

Method of decreasing the organic substance content of alum earth production cycle performed according to the Bayer technology

The invention relates to a new method of reducing the organic substance content of alum earth production cycle performed according to the Bayer technology. By the method of the invention the majority of the organic substances present in the circulating lye can be removed easily and with only slight...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ORBAN NEE KELEMEN, MARIA, TOTH, FERENC, REVESZ, LASZLO, MATYASI, JOZSEF, BENJAMINNE, LOSONCZI, JANOSNE, SZOKE, LAJOS, ZOLDI, SCHLEGEL, MIKLOS
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Beschreibung
Zusammenfassung:The invention relates to a new method of reducing the organic substance content of alum earth production cycle performed according to the Bayer technology. By the method of the invention the majority of the organic substances present in the circulating lye can be removed easily and with only slight losses in sodium content. According to the invention one proceeds so that soda present in the hydrate wash and/or in the soda salt solution is caustified with lime, the solution is evaporated to reach a total sodium oxide concentration of 200 to 400 g/l, the precipitated solid is separated and removed from the system, and the liquid is recycled.