System for direct electrowinning of copper

Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace

Reexamination Certificate

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C266S101000, C205S367000

Reexamination Certificate

active

06972107

ABSTRACT:
A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution, without subjecting the copper-containing solution to solvent extraction.

REFERENCES:
patent: 3917519 (1975-11-01), Fisher et al.
patent: 3949051 (1976-04-01), Pawlek
patent: 4093526 (1978-06-01), Blanco et al.
patent: 4338168 (1982-07-01), Stanley et al.
patent: 5223024 (1993-06-01), Jones
patent: 5232491 (1993-08-01), Corrans et al.
patent: 6451089 (2002-09-01), Marsden et al.
patent: 6663689 (2003-12-01), Marsden et al.
PCT/US 02/23454, PCT International Search Report, dated Jun. 20, 2003.

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