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. 03, 1995
Filed:
Jun. 30, 1993
Applicant:
Inventors:
Leroy E Dastolfo, Jr, Lower Burrell, PA (US);
Alfred F LaCamera, Trafford, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
204 66 ; 204 67 ; 204 68 ; 204 70 ;
Abstract
A low temperature salt bath for the electrolysis of metal oxides to produce the corresponding metal. The bath comprises a first salt, comprised of at least one fluoride salt, and a second salt, comprised of at least one chloride salt. The fluoride salt increases the metal oxide solubility in the molten salt bath, and the chloride salt reduces the bath liquidus temperature of the salt bath. The preferred process of practicing the invention includes using an anode consisting essentially of carbonaceous material and having an effective surface area about equal to the projected surface area of the anode.