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. 29, 1982
Filed:
Apr. 16, 1981
Applicant:
Inventors:
Carl Haakonsen, Kristiansand, NO;
Thomas Thomassen, Brekkestoe, NO;
Assignees:
Elkem a/s, both of, NO;
Falconbridge Nikkelverk A/S, both of, NO;
Falconbridge Nickel Mines, Ltd., both of, CA;
The Superior Oil Company, both of, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ; C25C / ; C22B / ;
U.S. Cl.
CPC ...
204107 ; 204117 ; 204118 ; 75104 ; 75117 ; 7511 / ; 75120 ; 423 38 ; 423 98 ; 423100 ; 423109 ;
Abstract
A method of leaching of metal sulphide-containing material is disclosed. The metal sulphides can be iron, copper, lead, silver, mercury and/or zinc. The leaching is effected by means of chloride-containing solutions through red-ox reaction. The metal sulphide-containing material is reacted with a solution which consists chiefly of cupric chloride and ferric chloride.