Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1991-02-13
1992-06-09
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
C22B 1900
Patent
active
051203537
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.
REFERENCES:
patent: 3832162 (1974-08-01), Smith
patent: 4778520 (1988-10-01), Spink
patent: 4789446 (1988-12-01), von Ropenack
Fugleberg Sigmund P.
Jarvinen Aimo E.
Outokumpu Oy
Rosenberg Peter D.
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