BAIERR'S METHOD OF ALKALIZING GOETHITE CONTAINING BAUXITE

An improved process for accelerating the digestion process in the Bayer alumina process is provided which promotes both the goethite-hematite conversion and a more perfect and quick dissolution of the diaspore. The above is achieved by carrying out the digestion in the process of 5-20% by weight cal...

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Hauptverfasser:	ZHOLT CHILLAG,HU, JOZHEF BOROSH,HU, YANOSH ZAMBO,HU, LASLO LENDEL,HU, JOZHEF ZELDI,HU, KAROJ SHOJMAR,HU, JOZHEF MATASHI,HU, TIBOR FERENTSI,HU, FERENTS ORBAN,HU, KALMAN VENTZEJ,HU, ISHTVAN FERESH,HU, TIBOR KALMAN,HU, BELA TOT,HU, LAJOSH TOT,HU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	An improved process for accelerating the digestion process in the Bayer alumina process is provided which promotes both the goethite-hematite conversion and a more perfect and quick dissolution of the diaspore. The above is achieved by carrying out the digestion in the process of 5-20% by weight calculated on the dry weight of the bauxite of a novel hydrogarnet catalyst.