Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Pechiney SA
Original Assignee
Pechiney SA
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Publication date
Application filed by Pechiney SAfiledCriticalPechiney SA
Priority to ES0244068ApriorityCriticalpatent/ES244068A1/en
Publication of ES244068A1publicationCriticalpatent/ES244068A1/en
Process for the production of pure aluminum oxide, by reduction of the aluminous minerals by the carbon inside an electric furnace and at an elevated temperature, since said reduction takes place at a temperature above 200ºC and in the presence of a defined and controlled excess of carbon, characterized in that the ferrosilicon globules existing in suspension are eliminated in the bath of molten aluminum oxide, in addition in the bath of defined amounts of iron, proceeding to the casting of said bath and the elimination of the excess carbon as well as the traces of aluminum carbide content, by the action of a gas containing oxygen, with concomitant solidification of aluminum oxide in the form of spherical particles. (Machine-translation by Google Translate, not legally binding)
ES0244068A1958-09-111958-09-11Manufacturing procedure of pure aluminum oxide (Machine-translation by Google Translate, not legally binding)
ExpiredES244068A1
(en)