Document Type and Number:
Japanese Patent JPS6154095
Kind Code:
B2
Abstract:
There is disclosed a novel method of recovering valuable metals from an industrial by-product containing copper and arsenic and at least one metal selected from among lead, zinc, iron, silver and cadmium, said method comprising leaching the by-product with sulfuric acid in an SO2 gas atmosphere at a temperature of 70 DEG C. or higher in the presence of a solid sulfide to thereby precipitate copper selectively as copper sulfide while dissolving other metal or metals in the leach solution and then separating the copper containing precipitate from the leach solution, said leach solution containing substantially no copper.
Inventors:
ABE HIDEKI
TANAKA HIROSHI
TANAKA HIROSHI
Application Number:
JP2248282A
Publication Date:
November 20, 1986
Filing Date:
February 15, 1982
Export Citation:
Assignee:
DOWA MINING CO
International Classes:
C22B11/00; C01G3/12; C01G9/08; C01G11/02; C01G28/00; C01G49/06; C01G49/08; C22B7/00; C22B7/02; C22B13/00; C22B15/00