Recovering copper from a copper-bearing source

Details Recovering copper from a copper-bearing source Recovering copper from a copper-bearing source

1980-01-23

1981-09-22

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204108, 75117, C25C 112

Patent

active

042908655

ABSTRACT:
A system and process are provided for recovering copper from a contaminated copper-bearing source such as copper smelter flue dust. The copper-bearing source is leached in an acidic solution to produce a liquor containing dissolved copper and dissolved contaminants. Simple copper sulfides are precipitated from the liquor by reacting the liquor with chalcopyrite and sulfur dioxide. Copper is recovered from the precipitated sulfides.
A novel process is provided for precipitating simple copper sulfides from a solution containing both dissolved copper and dissolved contaminants. The solution is combined with precipitation product such that substantially all ferric iron contained in the solution is reduced to ferrous iron. The ferric-free solution is reacted with chalcopyrite solids and sulfur dioxide to precipitate the dissolved copper as simple copper sulfides.

REFERENCES:
patent: 3218161 (1965-11-01), Kunda et al.
patent: 3876516 (1975-04-01), Pace et al.
patent: 3957602 (1976-05-01), Johnson et al.
patent: 4003740 (1977-01-01), Huggins et al.

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