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:
Feb. 13, 1991
Applicant:
Inventors:
Sigmund P Fugleberg, Turku, FI;
Aimo E Jarvinen, Kokkola, FI;
Assignee:
Outokumpu Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75419 ;
Abstract
The invention relates to a method for recovering various valuable materials in connection with the hydrometallurgical production of zinc. The method is particularly suited for feeding different types of raw materials into the various stages of a process carried out in atmospheric conditions. Valuable materials such as lead, silver and gold are recovered by means of the said method.