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:
Jun. 09, 1992
Filed:
Jul. 31, 1990
Applicant:
Inventor:
Jozef Hanulik, Zurich, CH;
Assignee:
Recytec S.A., Neuchatel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
2041 / ; 204109 ; 204112 ; 204114 ; 204115 ;
Abstract
Process for recycling an unsorted mixture of spent button cells and recovering their metallic components, comprising an anodic dissolution of the button cells, wherein metals constituting these cells are dissolved and redeposited at one or more cathodes, wherein metallic oxides are deposited in the anodic chamber and waste products (plastic, paper, etc.) accumulate in an anodic basket. Oxides are reduced to metals by thermal decomposition, mercury is recovered by distillation and the other metals are recovered by electrolytic separation.