METHOD OF PURIFYING SOLUIONS CONTAINING ALKALI-METAL ALUMINATES

The invention concerns a multi-stage method for the purification of the alkali-metal aluminate solutions arising as wastes in the aluminium processing industry, as well as the processing of solid aluminium-containing residues to give purified alkali-metal aluminate solutions or solid alkali-metal al...

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Bibliographische Detailangaben
Hauptverfasser:	ROGGENKAMP, DETLEV, DOERRER, HUBERT, POTENCSIK, ISTVAN, SEDELIES, REINHOLD, BREKER, JOHANNES
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY METALLURGY
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Beschreibung
Zusammenfassung:	The invention concerns a multi-stage method for the purification of the alkali-metal aluminate solutions arising as wastes in the aluminium processing industry, as well as the processing of solid aluminium-containing residues to give purified alkali-metal aluminate solutions or solid alkali-metal aluminates. L'invention concerne un procédé d'épuration, en plusieurs étapes, de solutions d'aluminates alcalins, lesquelles constituent des déchets dans l'industrie de transformation de l'aluminium, ainsi que le traitement de matières résiduelles solides contenant de l'aluminium, en vue d'obtenir des solutions épurées d'aluminates alcalins ou des aluminates alcalins solides.