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. 21, 1982
Filed:
Feb. 11, 1981
Applicant:
Inventors:
Assignee:
Ruhr Zink GmbH, Datteln, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25C / ;
U.S. Cl.
CPC ...
204114 ; 204119 ; 204293 ;
Abstract
A lead alloy anode for a cell for the electrowinning or electrolytic recovery of zinc consists of 0.05 to 0.25% by weight strontium and/or 0.05 to 0.1% by calcium in combination with 0.1 to 0.5 silver, balance lead. The cell is used in a method for the recovery of zinc at, for example, a current density of 160 to 630 amp/m.sup.2, a temperature of 30.degree. to 46.degree. C. and an electrolyte containing 40 to 70 g/l zinc and 165 to 220 g/l sulfuric acid.