Process of recovering copper from ore

Details Process of recovering copper from ore Process of recovering copper from ore

2005-07-26

2005-07-26

Andrews, Melvyn (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C423S041000

Reexamination Certificate

active

06921426

ABSTRACT:
A copper concentrate obtained by flotation of a high grade copper ore containing chalcopyrite as a main mineral constituent is leached at a temperature of 100° C. or higher, and under a pressure greater than atmospheric pressure yielding a copper leachate containing ferric ions of at least 5 g/L and sulfuric acid, and this copper leachate is used in heap leaching or vat leaching of a low grade copper ore, whereby a method of recovering copper economically from a material containing copper is provided.

REFERENCES:
patent: 4091070 (1978-05-01), Riggs et al.
patent: 5698170 (1997-12-01), King

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