Heap leach process

Details Heap leach process Heap leach process

2003-09-15

2009-08-18

Wyszomierski, George (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Process control responsive to sensed condition

C075S743000, C423SDIG018

Reexamination Certificate

active

07575622

ABSTRACT:
The invention discloses a method of controlling a heap leach process through controlling an irrigation rate of a heap as a function of at least one of an aeration rate of the heap, a determination of advection at least at one predetermined point in the heap, and a determination of temperature at least at one predetermined point in the heap. Also disclosed is for the aeration to be forced and for the method to include the step of controlling the aeration rate as 10 a function of a determination of the oxidation rate of material within the heap. The invention also extends to a method for the introduction of microorganisms into the heap of material, a method for increasing the temperature of heap of material for heap leaching, a method of determining an optimum heap configuration for a bio-assisted heap leach process of an ore heap, and a method of enriching the environment of microorganisms embedded in a heap of material for bio-assisted heap leaching.

REFERENCES:
patent: 5030279 (1991-07-01), Krauth
patent: 5174378 (1992-12-01), Costerton et al.
patent: 5873927 (1999-02-01), Schaffner et al.
patent: 6110253 (2000-08-01), Kohr et al.
patent: 6207443 (2001-03-01), King
patent: 6383458 (2002-05-01), Brierley et al.
patent: 6435769 (2002-08-01), Harrington
patent: 6736877 (2004-05-01), Harlamovs et al.
patent: 6860919 (2005-03-01), Norton et al.
patent: 2006/0035356 (2006-02-01), Crundwell et al.
patent: 199060837 (1991-02-01), None
MacLeod et al “Plugging of a Model Rock System by Using Starved Bacteri,” Applied and Environmental Microbiology, Jun. 1988, pp. 1365-1372.
C.L. Brierly, “Bacterial succession in bioheap leaching”, Hydrometallurgy 59 (2001), pp. 249-255.
G. Zarate, et al., “The metallurgy of the Mantoverde Project”, Hydrometallurgy 39 (1995) 307-319.
F.A. MacLeod et al., “Plugging of a Model Rock System by Using Starved Bacteria”, Applied and Environmental Microbiology, Jun. 1988, pp. 3365-1372.
David G. Dixon, “Analysis of heat conservation during copper sulphide heap leaching”, Hydrometallurgy 58 (2000) pp. 27-41.
Munoz J A et al.: “A study of hte bioleaching of a Spanish uranium ore. Part I: A review of the bacterial leaching in the treatment of uranium ores”; Hydrometallurgy, Elsevier Scientific Publishing Cy. Amsterdam, NL., vol. 38, No. 1, May 1, 1995, pp. 39-57, XP004040764, ISSN: 0304-386X.
Boon, M. and J.J Heijen. Gas-liquid mass transfer phenomena in bio-oxidation experiments of sulphide minerals. Hydrometallurgy 48(2):187-204, 1998.
Cathles, L.M. and Apps, J.A. A model of the dump leaching process that incorporates oxygen balance, heat balance, and air convection. Metallurgical Trans. vol. 6B pp. 617-624, 1975.
Brierly, J. A. and C.L. Brierley. Microbial mining using thermophilic organisms. Thermophiles: General, Molecular and Applied Microbiology. T. D. Brock. Golden, John Wiley & Sons:279-305, 1986.
Mulr, L. and Berry, V. Observations of a natural thermophilic microorganisms in the leaching of a large, experimental, copper-bearing waste body. Met.Trans. B 10B:523-531, 1979.
Moreno, L. Martinez, J., Casas, J. Modelling of bioleaching copper sulphide in heaps or dumps, In: R. Amils, A. Ballester editors, 16th International Biohydrometallurgy Symposium, IBS 99, pp. 443-451, 1999.

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