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:
Apr. 03, 1984
Filed:
Sep. 27, 1982
Robert K Dawless, Monroeville, PA (US);
Alfred F LaCamera, Level Green, PA (US);
Chester H Klingensmith, Leechburg, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
An improved process for the electrolytic production of aluminum by electrolysis of aluminum chloride in a molten salt electrolyte bath. The improved process is characterized by a reduction in solubility of the reduced aluminum metal as well as a smaller metal droplet size permitting closer anode-cathode spacing in the electrolysis cell and a lower electrical resistance. The improvement comprises performing the electrolysis in an electrolyte consisting essentially of from 0.5 to 15 wt. % aluminum chloride, from 0.5 to 40 wt. % of one or more alkaline earth metal chlorides selected from the class consisting of magnesium chloride, barium chloride, strontium chloride and calcium chloride, from 10 to 90 wt. % lithium chloride and the balance sodium chloride.