Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Reexamination Certificate
2005-05-17
2005-05-17
Andrews, Melvyn (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C075S740000, C075S743000, C075S744000, C423S122000, C423S658300, C205S560000
Reexamination Certificate
active
06893482
ABSTRACT:
The present invention is directed to a system for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend to passivate the reactive process or otherwise encapsulate the metal value, thereby reducing the amount of desired metal values partially or completely encapsulated by such material. The seeding agent may be generated in a number of ways, including the recycling of residue or the introduction of foreign substances. Systems embodying aspects of the present invention may be beneficial for recovering a variety of metals such as copper, gold, silver, nickel, cobalt, molybdenum, zinc, rhenium, uranium, rare earth metals, and platinum group metals from any metal-bearing material, such as ores and concentrates.
REFERENCES:
patent: 3260593 (1966-07-01), Zimmerley et al.
patent: 3528784 (1970-09-01), Green
patent: 3607235 (1971-09-01), Duncan et al.
patent: 3637371 (1972-01-01), Mackiw et al.
patent: 3656888 (1972-04-01), Barry et al.
patent: 3669651 (1972-06-01), Spedden et al.
patent: 3868440 (1975-02-01), Lindblad et al.
patent: 3896208 (1975-07-01), Dubeck et al.
patent: 3949051 (1976-04-01), Pawlek et al.
patent: 3958985 (1976-05-01), Anderson
patent: 3961028 (1976-06-01), Parker et al.
patent: 3962402 (1976-06-01), Touro
patent: 3985553 (1976-10-01), Kunda et al.
patent: 3991159 (1976-11-01), Queneau et al.
patent: 4017309 (1977-04-01), Johnson
patent: 4020106 (1977-04-01), Ackerley et al.
patent: 4028462 (1977-06-01), Domic et al.
patent: 4029733 (1977-06-01), Faugeras et al.
patent: 4039405 (1977-08-01), Wong
patent: 4039406 (1977-08-01), Stanley et al.
patent: 4046851 (1977-09-01), Subramanian et al.
patent: 4069119 (1978-01-01), Wong
patent: 4120935 (1978-10-01), Fountain et al.
patent: 4150976 (1979-04-01), Dain
patent: 4157912 (1979-06-01), Weir et al.
patent: 4165362 (1979-08-01), Reynolds
patent: 4256553 (1981-03-01), Baczek et al.
patent: 4266972 (1981-05-01), Redondo-Abad et al.
patent: 4272341 (1981-06-01), Lamb
patent: 4338168 (1982-07-01), Stanley et al.
patent: 4399109 (1983-08-01), Iler et al.
patent: 4405569 (1983-09-01), Dienstbach
patent: 4415540 (1983-11-01), Wilkomirsky et al.
patent: 4442072 (1984-04-01), Baglin et al.
patent: 4507268 (1985-03-01), Kordosky et al.
patent: 4571264 (1986-02-01), Weir et al.
patent: 4605439 (1986-08-01), Weir
patent: 4619814 (1986-10-01), Salter et al.
patent: 4775413 (1988-10-01), Horton et al.
patent: 4814007 (1989-03-01), Lin et al.
patent: 4875935 (1989-10-01), Gross et al.
patent: 4880607 (1989-11-01), Horton et al.
patent: 4892715 (1990-01-01), Horton
patent: 4895597 (1990-01-01), Lin et al.
patent: 4971662 (1990-11-01), Sawyer et al.
patent: 4992200 (1991-02-01), Lin et al.
patent: 5028259 (1991-07-01), Lin et al.
patent: 5059403 (1991-10-01), Chen
patent: 5073354 (1991-12-01), Fuller et al.
patent: 5176802 (1993-01-01), Duyvesteyn et al.
patent: 5223024 (1993-06-01), Jones
patent: 5281252 (1994-01-01), Landolt et al.
patent: 5316567 (1994-05-01), Jones
patent: 5356457 (1994-10-01), Pincheira Alvarez et al.
patent: 5670035 (1997-09-01), Virnig et al.
patent: 5698170 (1997-12-01), King
patent: 5770170 (1998-06-01), Collins et al.
patent: 5849172 (1998-12-01), Allen et al.
patent: RE36118 (1999-03-01), Cupertino et al.
patent: 5895633 (1999-04-01), King
patent: 5902474 (1999-05-01), Jones
patent: 5917116 (1999-06-01), Johnson et al.
patent: 5989311 (1999-11-01), Han et al.
patent: 6027543 (2000-02-01), Yoshizaki et al.
patent: 6451088 (2002-09-01), Marsden et al.
patent: 6626979 (2003-09-01), Marsden et al.
patent: 2192456 (1956-09-01), None
patent: 0 047 076 (1982-03-01), None
patent: WO 0208474 (2002-01-01), None
Novoa, C. “Notification of Transmittal of The International Preliminary Examination Report”, Nov. 10, 2003, pp. 1-12.
Evans, et al., “International Symposium of Hydrometallurgy,” Mar. 1, 1973, 2 pages.
Duyesteyn, et al., “The Escondida Process for Copper Concentrates,” 1998.
King, et al., “The Total Pressure Oxidation of Copper Concentrates,” 1993.
King, J. A., “Autoclaving of Copper Concentrates,” paper from COPPER 95, vol. III: Electrorefining and Hydrometallurgy of Copper, International Conference held in Santiago, Chile, Nov. 1995.
Mackis, V. N., “Direct Acid Pressure Leaching of Chalcocite Concentrate,” vol. 19, No. 2, Feb. 1967.
Hirsch, H. E., “Leaching of Metal Sulphides,” Patents, UK, No. 1,598,454, 7 pages, 1981.
Chimielewski, T., “Pressure Leaching of a Sulphide Copper Concentrate with Simultaneous Regeneration of the Leaching Agent,” Hydrometallurgy, vol. 13, No. 1, pp. 63-72, 1984.
Dannenberg, R. O., “Recovery of Cobalt and Copper From Complex Sulfide Concentrates,” Government Report, 20 pages, Report No. BM RI 9138, U.S. Dept. of the Interior, 1987.
Berezowsky, R.M.G.S., “The Commercial Status of Pressure Leaching Technology,” JOM, vol. 43, No. 2, pp. 9-15, 1991.
Hackl, R. P., “Effect of Sulfur-Dispersing Surfactants on the Oxygen Pressure Leaching of Chalcopyrite,” paper from COPPER 95, vol. III, pp. 559-577, Met Soc of CIM, Nov. 1995.
King, J.A. et al., paper entitled: “The Total Pressure Oxidation of Copper Concentrates,” vol. I, Fundamental Aspects, 1993.
Dreisinger, D. B., “Total Pressure Oxidation of El Indio Ore and Concentrate,” COPPER 1999, Fourth International Conference, Phoenix, Arizona, USA, Oct. 1999.
Richmond, G. D., “The Commissioning and Operation of a Copper Sulphide Pressure Oxidation Leach Process at Mt. Gordon,” ALTA COPPER 1999: Copper Sulphides Symposium & Copper Hydrometallurgy Forum, Gold Coast, Queensland, Australia Conference, 1999.
Ed. By Fathi Habashi: “Handbook of Extractive Metallurgy,” 1997, Wiley-Vch, Germany XP002224090 pp. 741-743, 757-758.
Das, G. K. et al, “Acid Pressure Leaching Of Nickel-Containing Chromite Overburden In The Presence Of Additives” Hydrometallurgy, Elsevier Scientific Publishing Cy. Amsterdam, Nl, vol. 39, No. 1, Oct. 1, 1995, pp. 117-128, XP004040725, ISSN: 0304-386X, p. 118 (“Experimental”) Abstract.
Database Compendex Online! Engineering Information, Inc., New York, NY, US; Greer Raymond T et al: “Characterization Of Solid Reaction Products From Wet Oxidation Of Pyrite In Coal Using Alkaline Solutions; ” Database accession No. EIX82040002261 XP002224019, Abstract & Scanning Electron Microsc 1980 Scanning Electron Microsc, Amf O'hare, Chicago, ILL, USA, 1980, pp. 541-550.
Baughman David R.
Brewer Robert E.
Hazen Wayne W.
Marsden John O.
Robertson Joanna M.
Andrews Melvyn
Phelps Dodge Corporation
Snell & Wilmer LLP
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