Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Reexamination Certificate
2007-01-09
2007-01-09
King, Roy (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
Reexamination Certificate
active
10964208
ABSTRACT:
A heap is constructed with hypogenic copper sulfide bearing ore to include exposed sulfide mineral particles at least 25 weight % of which are hypogenic copper sulfides. The concentration of the exposed sulfide mineral particles is such that the heap includes at least 10 Kg of exposed sulfide sulfur per tonne of solids in the heap. At least 50% of the total copper in the heap is in the form of hypogenic copper sulfides. A substantial portion of the heap is heated to at least 50° C. The heap is inoculated with a thermophilic microorganism, and bioleaching is carried out so that sufficient sulfide mineral particles in the heap are biooxidized to oxidize at least 10 Kg of sulfide sulfur per tonne of solids in the heap and to cause the dissolution of at least 50% of the copper in the heap in a relatively short period of time.
REFERENCES:
patent: 3785944 (1974-01-01), Atwood et al.
patent: 3856913 (1974-12-01), McElroy et al.
patent: 3949051 (1976-04-01), Pawlek
patent: 4173519 (1979-11-01), Parker et al.
patent: 4729788 (1988-03-01), Hutchins et al.
patent: 5196052 (1993-03-01), Gross et al.
patent: 5246486 (1993-09-01), Brierley et al.
patent: 5332559 (1994-07-01), Brierley et al.
patent: 5431717 (1995-07-01), Kohr
patent: 5573575 (1996-11-01), Kohr
patent: 5611839 (1997-03-01), Kohr
patent: 5676733 (1997-10-01), Kohr
patent: 5688304 (1997-11-01), Kohr et al.
patent: 5730776 (1998-03-01), Collins et al.
patent: 5763259 (1998-06-01), Panos
patent: 5766930 (1998-06-01), Kohr
patent: 5779762 (1998-07-01), Kohr et al.
patent: 5800593 (1998-09-01), Kohr
patent: 5873927 (1999-02-01), Schaffner et al.
patent: 6110253 (2000-08-01), Kohr et al.
patent: 6802888 (2004-10-01), Kohr et al.
patent: 0 522 978 (1993-01-01), None
patent: WO 00/36168 (2000-06-01), None
Ahonen, L. and O.H. Tuovinen,Bacterial Leaching of Chalcopyrite-Containing Ores in the Presence of Silver and Graphite in Shake Flasks, in International Symposium of Biohydrometallurgy, 1989, Jackson Hole, Wyoming: Canadian Centre for Mineral and Energy Technology, pp. 25-34.
Almendras, E, et al.,Surface Transformation and Electrochemical Response of Chalcopyrite in the Bacterial Leaching Process., International Symposeum of Biohydrometallurgy, pp. 259-272 (Warwick United Kingdom: Science and Technology Letters, 1987).
Ammou-Chokrourn, M., P. Sen, and F. Fouques,Electrooxidation of Chalcopyrite in Acid Chloride Medium; Kinetics, Stoichiometry and Reaction Mechanism,. in Thirteenth International Mineral Process Congress, 1981, Warsaw, Poland: Elsevier Polish Scientific Publishers, pp. 759-809.
Attia, Y.A. et al.,Cleaning and Desulfurization of High-Sulfur Coal by Selective Flocculation and Bioleaching in a Draft Tube Fluidized Bed Reactor, Processing and Utilization of High Sulfur Coals IV, Elsevier Science Publishers, B.V., Amsterdam, 1991, pp. 769-790.
Ballester, A., et al.,The Use of Catalytic Ions in BioleachingHydrometallurgy, 29(1992), pp. 145-160.
Bennett, J.W. et al.,Limitations of Pyrite Oxidation Rates in Dumps Set by Air Transport Mechanisms, International Symposium of Biohydrometallurgy, pp. 551-561 (Warwick United Kingdom: Science and Technology Letters, 1987).
Berry, V.K., L.E. Murr, and J.B. Hiskey,Galvanic Interaction Between Chalcopyrite and Pyrite During Bacterial Leaching of Low-Grade Waste, Hydrometallurgy 3 (1978): pp. 309-326.
Biegler, T. and M.D. Home,The Electrochemistry of Surface Oxidation of Chalcopyrite, Journal of the Electrochemical Society: Electrochemical Science and Technology (1985), vol. 132, No. 6, pp. 1363-1369.
Boon, M. and J. Heijnen,Gas-Liquid Mass Transfer Phenomena in Bio-Oxidation Experiments of Sulphide Minerals: A critical review of literature data., Hydrometallurgy, 48 (1998): pp. 187-204.
Boon, M. And J.J. Heijnen,Mechanisms And Rate Limiting Steps In Bioleaching Of Sphalerite, Chalcopyrite And Pyrite With Thiobacillus Ferrooxidans, Biohydrometallurgical Technologies, pp. 217-236 (Jackson Hole, Wyoming: The Minerals, Metals & Materials Society, 1993).
Brierley, Corale L. and Liguori, Albert J.,Copper Heap Leach Short Course Bio-Leaching Technology, 1998 SME Annual Meeting & Exhibit, Mar. 9-11, 1998, Orlando, Fla, Tab 4.
Brierley, C.,Leaching Of Chalcopyrite Ore Using Sulfolobus Species, Developments In Industrial Microbiology Proceedings Of The Thirty-Sixth General Meeting Of The Society For Industrial Microbiology, Aug. 11-17, 1979, Pittsburgh, Pennsylvania (1980), pp. 435-444.
Brierley, C. L.,Thermophilic Microorganisms in Extraction Of Metals From Ores, Develop. Indust. Microbiol., Chapter 19, pp. 273-284 (1977).
Brierley, JA, and CL Brierley,Microbial Leaching of Copper at Ambient and Elevated Temperatures, in Metallurgical Applications for Bacteria Leaching and Related Microbiological Phenomena, pp. 477-490 (LE Murr, AE Torma and J.A. Brierley, ed., New York: Academic Press, 1978).
Brierley, JA, and CL Brierley,Microbial Mining Using Thermophilic Microorganisms, inThermophiles: General, Molecular, and Applied Microbiology, pp. 279-305, (Thomas D Brock, ed., Golden: John Wiley & Sons, 1986).
Brock, T.D., et al.,Sulfolobus: A New Genus of Sulfur-Oxidating Bacteria Living at Low pH and High Temperature, Arch. Mikrobiol., vol. 84: pp. 54-68 (1972).
Brown, J.B.,Jarosite goethite stabilities at 25° C. 1 atm, Mineral. Deposita vol. 6, pp. 245-255 (1971).
Canfell, A., P. Greenfield, and D. Winborne ,Silver Catalysed Bioleaching of Chalcopyrite Ore in Columns, in IBS-Biomine'97, M 5.1.1-5.1.10 (Sydney, Australia: Australian Mineral Foundation) (1997).
Chakraborti, N., and LE Murr,Kinetics of Leaching Chalcopyrite-Bearing Waste Rock with Thermophilic and Mesophilic Bacteria, Hydrometallurgy, 5 (1980): 337-354.
Devasia, P., K.A. Natarajan, and G.R. Rao,Role of Bacterial Growth Conditions and Adhesion in the Bioleaching of Chalcopyrite by Thiobacillus Ferroxidans, Minerals and Metall. Processing, May 1996 at 82-86.
Duarte, J.C. et al.,Semi-Conductor Reactor Studies of a High Temperature Copper Bioleaching Process, Proceedings of the 6thEuropean Congress in Biotechnology, pp. 1177-1180 (1994).
Dutrizac, J.,The Dissolution of Chalcopyrite in Ferric Sulfate and Ferric Chloride Media, Met. Trans. B, vol. 12B, Jun. 1981, pp. 371-381.
Dutrizac, J.,Elemental Sulfur Formation During the Ferric Chloride Leaching of Chalcopyrite, Hydrometallurgy, 23 (1990): 153-176.
Dutrizac, J.E., The Leaching of Sulphide Minerals in Chloride Media, Hydrometallurgy, 29 (1992): 1-45.
Escobar, B., et al., Bioleaching of a Copper Concentrate with Sulfolobus BC., in Biohydrometallurgical Technologies, pp. 195-204 (Jackson Hole, Wyoming: The Minerals, Metals & Materials Society) (1993).
Gomez, C., et al., Electrochemistry of Chalcopyrite, Hydrometallurgy, 43(1996): 331-344.
Harries, J.R. et al., Rate Controls on Leaching in Pyritic Mine Wastes, in Proceedings of International Symposium of Biohydrometallurgy, pp. 233-241 (Warwick United Kingdom: Science and Technology Letters) (1987).
Hiskey, J. Brent,Overview of Cooper Heap Leaching, 1998 SME Annual Meeting & Exhibit, Mar. 9-11, 1998, Orlando, Fla, Tab 1.
Huber, G. and K.O. Stetter, Sulfolobus Metallicus, sp. nov., a Novel Strictly Chemolithoautotrophic Thermophilic Archaeal Species of Metal-Mobilizers, System. Appl. Microbiol., vol. 14, pp. 372-378 (1991).
Johansson, C; Sharder, VI.; Suissa, J.; Adutwum, K.; Kohr, W.: “Use of the GEOCOAT™Process for the Recovery of Copper from Chalcopyrite,” published in theBiohydrometallury and the Environment Toward the Mining of the 21stCentury: proceedings of the International Biohydrometallury Symposium, IBS '99, held in Madrid, Spain, Jun. 20-23, 1999, vol. 9, part A (1999).
Kelly, R., et al. Extremely Thermophilic Microorganisms: Metabolic Strategies, Genetic Characteristics, and Biotechnological Potential, in Biochemical Engineering V111, 1994, pp. 409-425.
Kordosky, Gary A.,Solvent Extraction of Metals: A Short Course, 1998 SME Annual Meeting & Exhibit, Mar. 9-11, 1998, Orlando, Fla, Tab 11, pp. 1-36.
Le Roux, N E, and D S Wakerley. Leaching of Chalcopyrite (CuFeS2) at 7
Johansson Chris
Kohr William J.
Shrader Vandy
Geobiotics LLC
Jones Day
King Roy
McNelis Kathleen A
LandOfFree
High temperature heap bioleaching process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High temperature heap bioleaching process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High temperature heap bioleaching process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3790296