Chloride heap leaching

Details Chloride heap leaching Chloride heap leaching

2008-11-06

2011-12-06

Lorengo, Jerry (Department: 1731)

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C423S023000, C423S027000, C423S038000, C423S041000, C423S043000, C423S045000, C423S046000

Reexamination Certificate

active

08070851

ABSTRACT:
A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.

REFERENCES:
patent: 3879272 (1975-04-01), Atwood et al.
patent: 3957602 (1976-05-01), Johnson et al.
patent: 4276084 (1981-06-01), Reynolds et al.
patent: 4571387 (1986-02-01), Bruynesteyn et al.
patent: 4971662 (1990-11-01), Sawyer et al.
patent: 5316567 (1994-05-01), Jones
patent: 6277341 (2001-08-01), Pinches et al.
patent: 6569391 (2003-05-01), Arias
patent: 6802888 (2004-10-01), Kohr et al.
patent: 2004/0144209 (2004-07-01), Faine et al.
patent: 2005/0044990 (2005-03-01), Shaw et al.
patent: 749257 (2002-06-01), None
patent: 40891 (1997-05-01), None
patent: 41897 (1997-11-01), None
patent: 1665-2003 (2003-08-01), None
patent: 1 424 403 (2004-06-01), None
patent: 2003328051 (2003-11-01), None
patent: WO98/39491 (1998-09-01), None
patent: WO03/038137 (2003-05-01), None
patent: WO03/091463 (2003-11-01), None
patent: WO2005/031012 (2005-04-01), None
patent: WO2005/056842 (2005-06-01), None
patent: WO2005/118894 (2005-12-01), None
patent: WO2006/070052 (2006-07-01), None
patent: WO2007/042604 (2007-04-01), None
patent: WO 2007042604 (2007-04-01), None
Sato et al., The Electrochemical Mechanism of Sulfide Self-Potentials, Feb. 1960, Geophysics, vol. 25, No. 1, pp. 226-249.
Lazaro I. et al., “A rotating ring-disk study of the initial stages of the anodic dissolution of chalcopyrite in acidic solutions”, Journal of Applied Electrochemistry, Kluwer Academic Publishers, DO, vol. 36, No. 4, Apr. 1, 2006, pp. 425-431, XP019247530 ISSN: 1572-8838.
Padilla et al., “Leaching of enargite in H2SO4-NaCl-O2Media”, Hydrometallurgy, Elsevier Scientific Publishing CY., Amsterdam, NL, vol. 80, No. 4, Dec. 30, 2005, pp. 272-279, XP005182654 ISSN: 0304-386X.
Nicol et al., The role of Ehmeasurements in the interpretation of the kinetics and mechanisms of the oxidation and leaching of sulphide minerals, Hydrometallurgy, Elsevier Scientific Publishing CY., Amsterdam, NL, vol. 63, No. 1, Jan. 2002, pp. 15-22, XP004330999 ISSN: 0304-386X.
Lu Z. et al., “The effect of chloride ions on the dissolution of chalcopyrite in acidic solutions”, Hydrometallurgy, Elsevier Scientific Publishing CY., Amsterdam, NL, vol. 56, No. 2, Jun. 2000, pp. 189-202.
Dutrizac, J.E., “The Leaching of Sulphide Minerals in Chloride Media”, Hydrometallurgy, vol. 29, 1992, pp. 1-45.
Hirato et al., The Leaching of Chalcopyrite with Ferric Chloride, Metallurgical Transactions, vol. 17B, Mar. 1986, pp. 19-28.
Majima et al., “The Leaching of Chalcopyrite in Ferric Chloride and Ferric Sulfate Solutions”, (Abstract) Canadian Metallurgical Quarterly, 1985, pp. 283-291.
M.J. Nicol, “Kinetics of the Oxidation of Copper(I) by oxygen in acidic chloride solutions”, S. Afr. Tydskr. Chem., 1984, pp. 77-80.

Affiliated with

Also associated with

Rating

Chloride heap leaching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chloride heap leaching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chloride heap leaching will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4264537