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:
Jan. 23, 1979
Filed:
Nov. 15, 1977
Applicant:
Inventors:
Tatsuo Ishikawa, Sapporo, JP;
Hachiro Ichikawa, Shimizu, JP;
Assignee:
Nippon Light Metal Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
204 67 ;
Abstract
A process for producing aluminum by electrolyzing fused aluminum chloride together with an alkali metal halide to produce chlorine gas at the anode surface and molten aluminum at the cathode surface where the electrolytic bath is of a molten mixed salt consisting essentially of 2 to 15% by weight AlCl.sub.3, 15 to 70% by weight CaCl.sub.2 and/or MgCl.sub.2, provided the amount of CaCl.sub.2 does not exceed 40% by weight, and 83 to 15% by weight NaCl. Metallic aluminum can be produced by electrolyzing aluminum chloride at a high current efficiency reaching about 90 to nearly 100%.