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:
Dec. 13, 1988
Filed:
Nov. 04, 1987
Applicant:
Inventor:
Ernest W Dewing, Kingston, CA;
Assignee:
Alcan International Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
204140 ;
Abstract
A method of refining lithium-containing aluminum scrap metal. An electrolytic cell is formed using molten scrap as the anode, lithium or Al-Li as the cathode and a chloride-based lithium electrolyte. The cell is operated at a temperature of about 700.degree. C. and the lithium is transferred from the scrap to the cathode. The depletion of lithium in the scrap is signalled by an abrupt rise in voltage of the cell. The remaining scrap at the anode can be used in the same way as conventional aluminum scrap and the pure Li or Al-Li alloy formed at the cathode can be used as new material for the Al-Li alloy market.