The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2003
Filed:
Oct. 16, 2001
Vittorio de Nora, Nassau, BS;
Georges Berclaz, Veyras, CH;
Moltech Invent S.A., , LU;
Abstract
An electrolytic cell ( ) for the electrowinning of aluminium comprises a plurality of anodes ( ) immersed in a molten electrolyte ( ), each anode ( ) having an oxygen-evolving active surface of open structure facing and spaced by an inter-electrode gap from a cathode ( ); a thermal insulating cover ( ) above the surface ( ) of the molten electrolyte ( ); and an alumina feed device ( ) arranged above the molten electrolyte surface ( ) for spraying and/or blowing alumina ( ) to an area of the molten electrolyte surface ( ), from where the alumina ( ) dissolves as it enters the electrolyte ( ) and alumina-rich electrolyte flows to the inter-electrode gaps where it is electrolysed to produce oxygen gas on the anodes ( ) and aluminium on the cathode ( ).