Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Reexamination Certificate
2002-07-10
2008-11-25
King, Roy (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
Reexamination Certificate
active
07455715
ABSTRACT:
A method of extracting zinc from a sulphidic ore is provided which comprises bioleaching the ore in a heap with acidophilic microorganisms to produce a pregnant leach solution which is recovered from the bottom of the heap. An integrated process which comprises subjecting the pregnant leach solution to neutralization and solvent extraction to produce a concentrated zinc solution is also provided. Zinc may be recovered from the concentrated solution by means of electrowinning, either in the absence or presence of manganese. Alternatively zinc may be recovered in the form of a zinc compound.
REFERENCES:
patent: 2829964 (1958-04-01), Zimmerley et al.
patent: 2992894 (1961-07-01), Hazen et al.
patent: 3214239 (1965-10-01), Hazen et al.
patent: 3260593 (1966-07-01), Zimmerley et al.
patent: 3305353 (1967-02-01), Duncan et al.
patent: 3347661 (1967-10-01), Mayling
patent: 3455679 (1969-07-01), Mayling
patent: 3573182 (1971-03-01), Chruchward et al.
patent: 3607235 (1971-09-01), Duncan et al.
patent: 3679397 (1972-07-01), O'Connor et al.
patent: 3755112 (1973-08-01), Fountain et al.
patent: 3777004 (1973-12-01), Lankenau et al.
patent: 3923976 (1975-12-01), Refige Vega et al.
patent: 3989607 (1976-11-01), Bush et al.
patent: 4017309 (1977-04-01), Johnson
patent: 4124462 (1978-11-01), Reinhardt et al.
patent: 4230487 (1980-10-01), Demarthe et al.
patent: 4235713 (1980-11-01), Diaz Nogueira et al.
patent: 4266972 (1981-05-01), Redondo-Abad et al.
patent: 4348056 (1982-09-01), Von Kohorn
patent: 4401531 (1983-08-01), Martin San Lorenzo et al.
patent: 4437965 (1984-03-01), Dreulle et al.
patent: 4571387 (1986-02-01), Bruynesteyn et al.
patent: 4610722 (1986-09-01), Duyvesteyn et al.
patent: 4701309 (1987-10-01), Ramachandran et al.
patent: 4721526 (1988-01-01), Elmore et al.
patent: 4729788 (1988-03-01), Hutchins et al.
patent: 4740243 (1988-04-01), Krebs-Yuill et al.
patent: 4987081 (1991-01-01), Hackl et al.
patent: 5005806 (1991-04-01), Krauth
patent: 5196052 (1993-03-01), Gross et al.
patent: 5228903 (1993-07-01), O'Keefe
patent: 5244493 (1993-09-01), Brierley et al.
patent: 5246684 (1993-09-01), Brown et al.
patent: 5332559 (1994-07-01), Brierley et al.
patent: 5358700 (1994-10-01), Brown et al.
patent: 5397380 (1995-03-01), Petersson et al.
patent: 5402991 (1995-04-01), Schindler
patent: 5413624 (1995-05-01), Rusin et al.
patent: 5429659 (1995-07-01), Spencer et al.
patent: 5573575 (1996-11-01), Kohr
patent: 5763259 (1998-06-01), Panos
patent: 5766930 (1998-06-01), Kohr
patent: 5800593 (1998-09-01), Kohr
patent: 5834294 (1998-11-01), Brierley et al.
patent: 5873927 (1999-02-01), Schaffner et al.
patent: 5914441 (1999-06-01), Hunter et al.
patent: 5919674 (1999-07-01), Tunley
patent: 5948375 (1999-09-01), Stallknecht
patent: 6043022 (2000-03-01), Lueking et al.
patent: 6053964 (2000-04-01), Harrell
patent: 6063158 (2000-05-01), Sharp, deceased et al.
patent: 6086656 (2000-07-01), Kohr et al.
patent: 6096113 (2000-08-01), Schaffner et al.
patent: 6099615 (2000-08-01), Underwood
patent: 6103204 (2000-08-01), Lizama et al.
patent: 6110253 (2000-08-01), Kohr et al.
patent: 6146444 (2000-11-01), Kohr
patent: 6149711 (2000-11-01), Lane
patent: 6159726 (2000-12-01), Kohr
patent: 6168766 (2001-01-01), Imai et al.
patent: 6207443 (2001-03-01), King
patent: 6736877 (2004-05-01), Harlamovs et al.
patent: 654322 (1992-09-01), None
patent: 673929 (1994-12-01), None
patent: 199918524 1 (1999-09-01), None
patent: 265199 (2001-04-01), None
patent: 468999 (2001-06-01), None
patent: 960463 (1975-01-01), None
patent: 1023947 (1978-01-01), None
patent: 2241064 (1978-01-01), None
patent: 1308919 (1988-01-01), None
patent: 2054522 (1993-05-01), None
patent: 2113039 (1995-07-01), None
patent: 2155050 (1996-02-01), None
patent: 2275098 (1999-12-01), None
patent: 2305052 (2000-11-01), None
patent: 2306015 (2000-12-01), None
patent: 2307957 (2000-12-01), None
patent: 2309225 (2000-12-01), None
patent: 0 376 447 (1990-07-01), None
patent: 1258535 (2002-11-01), None
patent: 2065952 (1991-12-01), None
patent: 9216667 (1992-10-01), None
patent: 0023629 (2000-04-01), None
patent: 0029629 (2000-05-01), None
patent: WO 00/71763 (2000-11-01), None
patent: 0116385 (2001-03-01), None
patent: 0118264 (2001-03-01), None
patent: 0118266 (2001-03-01), None
patent: WO 01/33693 (2001-05-01), None
patent: WO 01/44519 (2001-06-01), None
patent: WO 01/44520 (2001-06-01), None
patent: WO 00/75184 (2001-10-01), None
patent: WO 02/066708 (2002-08-01), None
patent: 995892 (1999-09-01), None
International Preliminary Examination report for PCT/CA02/01053, file date Oct. 10, 2003.
Metals Handbook, Desk Edition, 2neEdition, ASM International, 1998, p. 589 and 720-723.
Latest developments in leaching technology for metal ores, Sulphur, No. 269, 2000, pp. 31-40.
Working with ‘mini-miners’; Is this the true way ahead?, International Mining and Minerals, 1999, pp. 323-325.
Ballester, A. et al,Kinetic study of bioleaching of mineral sulphides: sphalerite and complex sulphide, Erzmetall, vol. 42, No. 2, 1989, pp. 62-65.
Bartlett, R.W. et al,Oxygen diffusion into wet ore heaps impeded by water vapor upflow, Global Exploitation of Leachable Gold Deposits, Hausen, D.M. (ed.), The Minerals, Metals and Materials Society, 197, pp. 85-94.
Bartlett, R.W.,Metals extraction from ores by heap leaching, Metallurgical and Materials Transactions B, vol. 28B, 1997, pp. 529-545.
Boon, M. et al,Mechanisms and rate limiting steps in bioleaching of chalcopyrite and pyrite with Thiobacillus ferrooxidans, Biohydrometallurgical Technologies, Torma, A.E. et al. (eds.), The Minerals, Metals and Materials Society, 1993, pp. 217-235.
Boon, M. et al.,Recent developments in modellling bio-oxidation kinetics. Part II: Kinetic modelling of the bio-oxidation of sulphide minerals in terms of the critical sub-processes involved, Mineral Bioprocessing II, Holmes, D.S. et al. (eds.), The Minerals, Metals and Materials Society, 1995, pp. 63-82.
Brierley, C.L.,Bacterial succession in bipheap leaching, Hydrometallurgy, vol. 59, 2001, pp. 249-255.
Brierley, C.L., et al,Bioheap processes—operational requirements and techniques, Copper Leaching, Solvent Extraction, and Electrowinning Technology, Society of Manifacturing Engineers, 1999, pp. 17-27.
Brierley, C.L. et al,Copper bioleaching: state-of-the-art, Proceedings of Copper 99, vol. IV—Hydrometallurgy of Copper, Young, S.K. et al. (eds.), The Minerals, Metals and Materials Society, 1999, pp. 59-68.
Brierley, J.A. et al.,Present and future commercial applications of biohydrometallurgy, Hydrometallurgy, vol. 59, 2001, pp. 233-239.
Carranza, F. et al,Selective cyclic bioleaching of a copper-zinc sulphide concentrate, Hydrometallurgy, vol. 24, 1990, 67-76.
Crundwell, F.k., Effect of iron impurity in zinc sulfide concentrates on the rate of dissolution, AIChe, vol. 34, No. 7, 1988, pp.1128-1134.
Dutrizac, J.E.,Ferric sulphate percolation leaching of a pyritic Zn-Pb-Cu ore, CIM Bulletin, vol. 72, No. 810, 1979, pp. 109-118.
Fowler, T.A., et al,Leaching of zinc sulfide by Thiobacillus ferrooxidans: Bacterial oxidation of the sulfur product layer increases the rate of zinc sulfide dissolution at high concentrations of ferrous ions, Applied and Environmental microbiology, vol. 65, No. 12, 1999, pp. 5285-5292.
Hearne, T.M. et al.,Hydrometallurgical recovery of zinc from sulphide ores and concentrates, Zinc and Lead Processing, Dutrizac, J.E. et al. (eds.), The Metallurgical Society of CIM, 1998, pp. 765-780.
Herkenhoff, E.C. et al.,Heap leaching: agglomerate or deslime?, Engineering and Mining Journal, vol. 188, no. 6, 1987, pp. 32-33, 35, 38-39.
Kinard, D.T. et al,Engineering properties of agglemerated ore in a heap leach pile, Dames & Moore, Golden, 1987, pp. 55-64.
Komnitsas, C.,Amenability of zinc sulphide overburden and tailings to biooxidation, Oryktos Ploutos, vol. 93, 1994, pp. 37-43.
Konishi, Y. et al,Bioleaching of zinc sulfide concentrate bu Thiobacillus ferroxidans, Biotechnology and Bioengineering, vol. 39, 1992, pp. 66-74.
Krafft, C. et al,Bacteial leaching of two Swedish zinc sulfide ores
Ashman Daniel W.
Dominguez Jose Alberto Gonzalez
Harlamovs Juris R.
Lizama Hector M.
Makwana Dilipkumar D.
Borden Ladner Gervais LLP
de Kleine Geoffrey
King Roy
McGuthry-Banks Tima M
Teck Cominco Metals Ltd.
LandOfFree
Heap bioleaching process for the extraction of zinc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heap bioleaching process for the extraction of zinc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heap bioleaching process for the extraction of zinc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4026495