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Application filed by Alcan Res & DevfiledCriticalAlcan Res & Dev
Publication of IE41148LpublicationCriticalpatent/IE41148L/en
Publication of IE41148B1publicationCriticalpatent/IE41148B1/en
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals
(AREA)
Abstract
In the production of alumina by the Bayer process from bauxite containing gibbsite and boehmite and having an iron content below 5% (calculated as Fe2O3) the extraction of boehmite is improved by introducing lime during, preferably at the beginning of, the digestion stage which is carried out at a temperature of 225-270.degree.C.
[CA1047230A]
IE112175A1974-05-231975-05-19Improvement in the extraction of alumina from bauxite
IE41148B1
(en)
Continuous process for obtaining pure aluminium oxide from an acid liquor originating from the chloro-sulfuric leaching of an aluminous mineral, and the purification of the liquor separated from the aluminium oxide
Process for the elimination of dissolved zinc from sodium aluminate liquors originating from the treatment of zinciferrous bauxite according to the bayer method