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:
Sep. 18, 1979
Filed:
Mar. 09, 1978
Donald L Kinosz, Arnold, PA (US);
David A Wohleber, Lower Burrell, PA (US);
Subodh K Das, Apollo, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A method is provided for removing aluminum or compounds thereof causing a short circuit in an electrolytic cell containing aluminum chloride dissolved in a molten solvent of higher decomposition potential, the cell used for the production of aluminum from aluminum chloride and having a terminal anode and cathode providing an inter-electrode space therebetween. The method comprises removing aluminum chloride and molten solvent from the cell to an extent which exposes the materials in the inter-electrode space causing the short circuit, introducing a source of chlorinating agent to the cell and contacting the materials causing the short circuit with the chlorinating agent to form aluminum chloride, the contacting being for a time sufficient to remove the short circuit thereby permitting the addition of the aluminum chloride and solvent and the electrolysis thereof for the production of aluminum.