Thiosulfate generation in situ in precious metal recovery

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

Reexamination Certificate

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C075S734000, C075S736000

Reexamination Certificate

active

07572317

ABSTRACT:
Precious metal recovery by thiosulfate leaching where thiosulfate lixiviant is generated in situ employing elemental sulfur generated from partial oxidation of sulfidic precious metal-bearing feed and/or employing reactants from processing effluent.

REFERENCES:
patent: 3728433 (1973-04-01), Urban
patent: 4070182 (1978-01-01), Genik-Sas-Berezowsky et al.
patent: 4269622 (1981-05-01), Kerley, Jr.
patent: 4369061 (1983-01-01), Kerley, Jr.
patent: 4552589 (1985-11-01), Mason et al.
patent: 4654078 (1987-03-01), Perez et al.
patent: 4778519 (1988-10-01), Pesic
patent: 4902345 (1990-02-01), Ball et al.
patent: 5013359 (1991-05-01), Fair et al.
patent: 5071477 (1991-12-01), Thomas et al.
patent: 5232491 (1993-08-01), Corrans et al.
patent: 5354359 (1994-10-01), Wan et al.
patent: 5536297 (1996-07-01), Marchbank et al.
patent: 5785736 (1998-07-01), Thomas et al.
patent: 5876588 (1999-03-01), Lalancette et al.
patent: 5902474 (1999-05-01), Jones
patent: 6344068 (2002-02-01), Fleming et al.
patent: 6428604 (2002-08-01), Kerfoot et al.
patent: 6660059 (2003-12-01), Ji et al.
patent: 2004/0035252 (2004-02-01), Ji et al.
patent: 2004/0115108 (2004-06-01), Hackl et al.
patent: 2005/0002852 (2005-01-01), Karras et al.
patent: 9111539 (1991-08-01), None
patent: 2004005556 (2004-01-01), None
Aylmore M.G. “Treatment of a Refractory Gold-Copper Sulfide Concentrate by Copper Ammoniacal Thiosulfate Leaching”, Minerals Engineering, 2001, pp. 615-637, vol. 14, No. 6, Elsevier Science Ltd.
Jiayong et al., “Leaching and Recovery of Gold in Thiosulfate Based System—A Research Summary at ICM”, Trans. India Inst. Met., Dec. 1996, pp. 841-849, vol. 49, No. 6.
Zhang et al., “The Simultaneous Oxidation of Sulfide Minerals and the Dissolution of Gold”, Arsenic Metallurgy, Proceedings of a symposium held during the TMS Annual Meeting, San Francisco, Feb. 13-17, 2005, pp. 265-281, R.G. Reddy, V. Ramachandran, eds.
Hemmati, M. et al.; “Study of the Thiosulfate Leaching of Gold from Carbonaceous Ore and the Quantitative Determination of Thiosulfate in the Leached Solutions,” University of Nevada, Reno, 1987, 19 pages.

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