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:
May. 25, 1976
Filed:
Jan. 17, 1975
Stanley H Langer, Madison, WI (US);
Other;
Abstract
In the disclosed process, relatively pure copper is efficiently recovered from metallic alloy, scrap or cement, by electrochemical dissolution and deposition (as the relatively pure copper) under special conditions. In a halide solution, in a cell free from oxygen, the contaminated or alloyed copper is transferred from the impure state and separated by means of a substantially one electron process for the copper involved. The process can be operated in a one-fluid, or a two-fluid cell with diaphragm, depending on the composition of alloy or metal to be purified. For instance, in the case of copper-zinc alloys or mixtures, the copper is readily recovered in a one-fluid cell by suitable arrangement. Particularly with more complex alloys or mixtures, however, it can be advantageous to use a two-fluid cell and an intermediate purification stage between direct dissolution and electrodeposition. Concomitant metals may be recovered in either the metallic state or as chemical compounds. The process allows an orderly, effective electrochemical treatment for the recovery of copper in the presence of impurities.