Leaching, Dissolving, Or Extracting Prior To Synthesis Patents (Class 205/589)
  • Publication number: 20150096412
    Abstract: A method for recovering nickel and cobalt from a product liquor solution by processing the product liquor solution through a continuous ion exchange process including a plurality of ion exchange beds containing nickel selective ion exchange resin that pass through individual process zones as part of a nickel recovery circuit, wherein the method includes the following steps: (a) passing the product liquor solution through an ion exchange bed to load nickel onto the ion exchange resin and produce a cobalt-containing raffinate solution, (b) passing a sulfuric acid solution through the loaded ion exchange bed to strip nickel from the exchange resin and produce a nickel-containing eluate, (c) passing a rinse solution through the stripped ion exchange bed, (d) adjusting the pH of the cobalt-containing raffinate solution to a pH of at least 2.
    Type: Application
    Filed: April 23, 2013
    Publication date: April 9, 2015
    Inventors: Charles R. Marston, Christopher R. Eicher
  • Patent number: 8986634
    Abstract: The present invention refers to a method being easy to recover metals including nickel and aluminum from waste aluminum catalysts, thereby entirely promoting the recovering rate. Said method comprises: preparing and roasting a waste aluminum catalyst with sodium salts, and then obtaining a first solution comprising vanadium and molybdenum, and a dreg comprising nickel and aluminum through leaching and filtrating; collecting and mixing the dreg with alkali powders to obtain a mixture of the dreg and alkali powders, roasting the mixture at 300 to 1000° C. with aluminum in the dreg reacting with hydroxyl generated from the roasting of mixture and further generating aluminum hydroxide, and then obtaining a second solution comprising aluminum and a concentrate having nickel through another leaching and filtrating; and recovering aluminum from the second solution and recovering nickel from the concentrate.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: March 24, 2015
    Inventor: Ping-Tao Wu
  • Publication number: 20140262817
    Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, and forwarding the solids to a second leaching operation.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
  • Publication number: 20140262815
    Abstract: Various embodiments provide a method comprising producing a cobalt hydroxide bearing material, leaching the cobalt hydroxide hearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, conditioning a first portion of the purified cobalt bearing liquid phase to yield a conditioned cobalt bearing solution and, electrowinning the conditioned cobalt bearing solution to yield cobalt metal.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
  • Publication number: 20140262816
    Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, precipitating cobalt gypsum by adding lime to a first portion of the purified cobalt bearing liquid phase, and recycling the cobalt gypsum to the leaching.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
  • Publication number: 20140023572
    Abstract: A method of selectively leaching a metal such as nickel from an ore or ore processing intermediate comprising the metal and cobalt. The ore or ore processing intermediate is contacted with an acidic leach solution comprising an amount of an oxidising agent sufficient to oxidise a major portion of the cobalt to thereby cause it to be stabilised in the solid phase while a major portion of the metal is dissolved for subsequent recovery.
    Type: Application
    Filed: January 25, 2012
    Publication date: January 23, 2014
    Inventors: James Vaughan, William Hawker
  • Publication number: 20130206607
    Abstract: To provided a method for recovering lithium from a lithium ion battery using comparatively simple equipment and without using a cumbersome process. A lithium extraction method for extracting lithium from the positive electrode material of a lithium ion battery containing lithium and cobalt, the method being characterized in that the positive electrode material is immersed into an acidic solution at 50° C. or less, lithium ions are selectively leached into the acidic solution while inhibiting the leaching of cobalt ions, and the leaching of lithium ions is stopped while the amount of lithium contained in the positive electrode material is sufficient.
    Type: Application
    Filed: July 13, 2011
    Publication date: August 15, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Yasuko Kojima, Yoshihide Yamaguchi, Masahide Okamoto
  • Patent number: 8361191
    Abstract: In various aspects, the invention provides processes that use relatively low levels of acid to leach lean nickel ores, including processes that provide relatively high levels of extraction of nickel and cobalt from nickel laterite ores, in conjunction with relatively low levels of iron extraction.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: January 29, 2013
    Assignee: Search Minerals, Inc.
    Inventors: David Dreisinger, James Clucas
  • Patent number: 8273237
    Abstract: The present invention relates, generally, to a method and apparatus for recovering metal values from a metal-bearing materials, and more specifically, a process for recovering copper and other metals through leaching, electrowinning using the ferrous/ferric anode reaction, and the synergistic addition of ferrous iron to the leach step.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: September 25, 2012
    Assignee: Freeport-McMoran Corporation
    Inventors: John O. Marsden, James D. Gillaspie, John C. Wilmot
  • Publication number: 20120213680
    Abstract: The present invention relates to processes for hydromethanating a nickel-containing (and optionally vanadium-containing) carbonaceous feedstock while recovering at least a portion of the nickel content (and optionally vanadium content) originally present in the carbonaceous feedstock.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 23, 2012
    Inventors: Alkis S. Rappas, Robert A. Spitz
  • Patent number: 8062614
    Abstract: Processes for metal leaching/solvent extraction are described which comprise: (a) providing a first aqueous leach pulp which comprises a mixture of leached solids and an aqueous leach solution comprising a metal, a leaching agent and water; (b) subjecting the first aqueous leach pulp to a first solid-liquid separation to provide a first clarified aqueous leach solution and a second aqueous leach pulp, wherein the second aqueous leach pulp comprises the leached solids at a % solids level greater than the first pulp; (c) subjecting the first clarified aqueous leach solution to a first solvent extraction prior to any significant dilution, whereby a first aqueous raffinate is obtained; (d) subjecting the second aqueous leach pulp to a second solid-liquid separation with dilution via an aqueous stream to obtain a second clarified aqueous leach solution; and (e) subjecting the second clarified aqueous leach solution to a second solvent extraction whereby a second is aqueous raffinate is obtained.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: November 22, 2011
    Assignee: Cognis IP Management GmbH
    Inventors: Gary A. Kordosky, Andrew Nisbett
  • Patent number: 8003064
    Abstract: The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of metals from a leached metal-bearing material is controlled and improved by providing a high grade pregnant leach solution (“HGPLS”) and a low grade pregnant leach solution (“LGPLS”) to a single solution extraction plant comprising at least two solution extractor units, at least two stripping units, and, optionally, at least one wash stage.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: August 23, 2011
    Assignee: Freeport-McMoran Corporation
    Inventors: Barbara J. Savage, David G. Meadows, Wayne W. Hazen
  • Patent number: 7998441
    Abstract: A method for selective removal of cadmium from a feed solution also containing other metals such as nickel (Ni) and/or cobalt (Co), utilizing a thiourea based ion exchange resin, and a method for eluting cadmium adsorbed on the thiourea based resin.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: August 16, 2011
    Assignee: CVRD Inco Limited
    Inventors: Indje Ognianov Mihaylov, Douglas Albert Hope
  • Patent number: 7935171
    Abstract: A process for producing a metallic nickel product with a low iron content, that includes: (i) providing an acidic product liquor; (ii) subjecting the acidic product liquor to an ion exchange process to absorb the nickel and part of the iron; (iii) eluting the nickel and iron to produce an eluate containing the nickel and iron. (iv) neutralising the eluate to leave an iron depleted eluate; (v) neutralising the iron depleted eluate to cause precipitation of nickel hydroxide containing low iron; (vi) calcining the nickel hydroxide to convert it to nickel oxide; (vii) subjecting the nickel oxide to direct smelting in the presence of a reductant to produce a molten nickel phase; and (viii) refining the molten nickel phase by oxidation to produce a metallic nickel product with low iron content.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: May 3, 2011
    Assignee: BHP Billiton SSM Development Pty Ltd.
    Inventors: Ivan Ratchev, Houyuan Liu, Alexey Duarte, Harald Theowald Muller
  • Publication number: 20100196190
    Abstract: The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic separation; (b) Leaching (2) of the non-magnetic fraction (CN) obtained form the previous stage (a); (c) optionally, neutralization (3) of the effluent from the leaching and/or solid-liquid separation stages (4); (d) treatment of the effluents from stages (b) or (c) using an ion-exchange hybrid system (5) comprising at least one circuit for removal of impurities and at least one circuit for recovery of nickel and cobalt; (e) elution (6) of the ion-exchange resin used; (f) separation, purification, and recovery (7) of the nickel and cobalt.
    Type: Application
    Filed: November 11, 2007
    Publication date: August 5, 2010
    Inventor: Flavia Dutra Mendes
  • Publication number: 20100089764
    Abstract: ‘Method for production of metallic cobalt from the raffinate from solvent extraction of nickel’.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 15, 2010
    Inventors: Vanessa Torres, Marcelo Augusto Castro Lopes Da Costa, Omar Antunes Do Carmo, Salomão Solino Evelin
  • Patent number: 7597738
    Abstract: A process for the production of ferro-nickel or nickel matte from a product liquor solution containing at least nickel, cobalt, iron and acid soluble impurities, said process including the steps of: (a) contacting the product liquor solution (7) containing the nickel, cobalt, iron and acid soluble impurities with an ion exchange resin (8), wherein the resin selectively absorbs nickel and iron from the solution leaving the cobalt and the acid soluble impurities in the raffinate (9); (b) stripping the nickel and iron from the resin with a sulfuric acid solution to produce an eluate (11) containing nickel and iron; (c) neutralising the eluate to precipitate a mixed nickel iron hydroxide product (13); and (d) reducing and smelting the mixed nickel iron hydroxide product to produce ferro-nickel (29) or nickel matte (24).
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: October 6, 2009
    Assignee: BHP Billiton SSM Technology Pty Ltd.
    Inventors: Houyuan Liu, Alexey Duarte, Wolf Meihack, Ivan P. Ratchev
  • Patent number: 7435325
    Abstract: Upon performing electrolysis with a solution containing nickel as the electrolytic solution, anolyte is adjusted to pH 2 to 5; impurities such as iron, cobalt and copper contained in the anolyte are eliminated by combining any one or two or more of the methods among adding an oxidizing agent and precipitating and eliminating the impurities as hydroxide, eliminating the impurities through preliminary electrolysis, or adding Ni foil and eliminating the impurities through displacement reaction; impurities are thereafter further eliminated with a filter; and the impurity-free solution is employed as catholyte to perform the electrolysis. The present invention relates to a simple method of performing electrolytic refining employing a solution containing nickel from nickel raw material containing a substantial amount of impurities, and provides technology on efficiently manufacturing high purity nickel having a purity of 5N (99.999 wt %) or more.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: October 14, 2008
    Assignee: Nippon Mining & Metals Co., Ltd
    Inventors: Yuichiro Shindo, Kouichi Takemoto
  • Patent number: 7033480
    Abstract: The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent extraction 306 to remove acid in the nickel recovery circuit. The acid product 326 can then be neutralized and/or recycled as desired.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: April 25, 2006
    Assignee: Placer Dome Technical Services Limited
    Inventor: James A. King
  • Patent number: 6880703
    Abstract: A floral transport apparatus to facilitate the transportation and delivery of floral arrangements is disclosed. The floral transport apparatus includes a hard plastic container housing a support carriage having a set of longitudinal elastic bands and a set of lateral elastic bands stretched tightly over a box frame to form an upper and lower mesh. The floral arrangement is held securely in the gaps between the tensioned bands of the upper and lower mesh to prevent lateral displacement which would otherwise result in tipping of the floral arrangement. The floral transport apparatus provides a means for carrying many floral arrangements of various sizes simultaneously. Moreover, the floral transport apparatus is easily portable and manageable by a single delivery person and can be washed to keep the apparatus attractive in view of floral customers and potential floral customers.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: April 19, 2005
    Assignee: Floratite Inc.
    Inventors: Celene C. Peña, Tracy R. Jackson
  • Patent number: 6387239
    Abstract: A bio-leaching method is provided for recovering metal from a metal containing ore. The ore is subjected to contact with a microorganism selective to the oxidation of sulfur. A sulfur containing compound is mixed with the microorganism before, during or after contact with the ore to systemically form sulfuric acid to leach the metal from the ore. The ore is in the form of a slurry, a heap, a charge in a vat and is bioleached for a time sufficient to dissolve the metal in the ore and form a metal-rich leachate and an ore residue. The metal can then be extracted from the metal-rich leachate. The metal containing ore may contain base metals, precious metals, or platinum group metals. Upon formation of the metal-rich leachate, the ore residue may be further processed to recover any precious metals or platinum group metals that may be present.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: May 14, 2002
    Assignee: BHP Minerals International, Inc.
    Inventors: Willem P. C. Duyvesteyn, Julia R. Budden, Manuel R. Lastra
  • Patent number: 6383255
    Abstract: A method for winning the valuable metal content of a leaching solution acidified with sulphuric acid, by solvent extraction and electrowinning and a following final product winning stage, for instance an electrowinning stage, wherein the pH of the leaching solution is raised successively to precipitate out the iron and arsenic present in a first precipitation stage, removing said first precipitate, and precipitating the valuable metal content of the leaching solution substantially totally in a following precipitation stage. The resultant precipitate containing valuable metal and gypsum is removed and leached in an acid environment to re-dissolve the valuable metal content, and the thus formed acid solution and its metal content are delivered to a solvent extraction circuit in which the metal content is converted to a substantial degree to an acid electrolyte from which metal or some other end product is won.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: May 7, 2002
    Assignee: Boliden Mineral AB
    Inventor: Jan-Eric Sundkvist
  • Patent number: 6309531
    Abstract: A chemical process is disclosed for extracting copper or iron (M). The copper or iron is exposed to a leaching solution comprised of a metal salt (m) such that the copper or iron (M) is solvated and the metal ion (m) is reduced according to the reaction 2m+3(aq)+M(s)→2m+2(aq)+M+2(aq). An electrolytic cell has an anion exchange membrane separating an anode chamber from a cathode chamber. The leaching solution with the solvated copper or iron is placed into the cathode chamber of the electrolytic cell. A second solution comprising a reduced state metal salt m+2 of the salt in the leaching solution is then added to the electrolytic cell anode chamber. A voltage is applied to reduce and deposit the copper Cu+2 or iron Fe+2 at the cathode and to oxidize the metal m+2 at the anode. The oxidized metal m+2 in the anode chamber is then recycled as leaching solution for solvating copper or iron.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: October 30, 2001
    Assignee: USF Filtration and Separations Group, Inc.
    Inventor: Michael C. Murray
  • Patent number: 6261526
    Abstract: A process for the recovery of nickel from a nickel containing ore in which the ore, particularly a laterite ore, is initially leached with an aqueous acid solution, after which the nickel is precipitated as nickel hydroxide by adding a hydroxide to the aqueous acid leach solution containing the nickel, followed by a re-leaching of the nickel with an aqueous ammoniacal solution and recovery of the nickel by a solvent extraction of the nickel from the aqueous ammoniacal solution with an organic phase of a water insoluble oxime extractant comprising a ketoxime containing less than 10% phenols dissolved in a water-immiscible hydrocarbon solvent and the nickel recovered by electrowinning the nickel from the aqueous acid stripping solution employed to strip the nickel from the organic phase.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: July 17, 2001
    Assignee: Henkel Corporation
    Inventors: Michael J. Virnig, George Wolfe
  • Patent number: 6156280
    Abstract: Process for removing manganese values from a solution of a water-immiscible hydrocarbon containing manganese values and a water-insoluble oxime extractant capable of extracting nickel values from aqueous ammoniacal solutions comprising the steps ofI) contacting the water-immiscible hydrocarbon solution with a finely divided active metal and an aqueous solution of a strong acid to decrease or complete remove the manganese values from said water-immiscible hydrocarbon solution; andII) separating the stripped hydrocarbon solution from the aqueous solution.The invention also relates to a method for the extraction of nickel from nickel-containing ores in which a content of manganese values is present in which the above process is used.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: December 5, 2000
    Assignee: Henkel Corporation
    Inventors: Michael J. Virnig, Stephen M. Olafson, Burrel Boley, III
  • Patent number: 5667665
    Abstract: A process for producing a high purity cobalt is provided comprising the following steps. An aqueous solution of cobalt chloride having a hydrochloric acid concentration of 7 to 12N is provided. The solution includes either or both of Fe and Ni as impurities. The solution is contacted with an anion exchange resin so that cobalt is adsorbed on the resin. Cobalt is eluted from the resin with hydrochloric acid at a concentration of 1 to 6N. The solution containing the eluted cobalt is dried or otherwise concentrated to produce a purified aqueous solution of cobalt chloride having a pH of 0 to 6. Organic materials are preferably removed from the purified solution by active carbon treatment. Electrolytic refining is conducted with the purified aqueous solution as an electrolyte to obtain electrodeposited cobalt. A high purity cobalt sputtering target can be obtained wherein Na content is 0.05 ppm or less; K content is 0.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: September 16, 1997
    Assignee: Japan Energy Corporation
    Inventors: Yuichiro Shindo, Tsuneo Suzuki
  • Patent number: 5595642
    Abstract: A method of pressure leaching nickel and cobalt from sulphidic precipitates is provided, wherein such precipitates are leached with chlorine at a controlled redox potential of between 400 and 550 mV (Ag/AgCl), catalysed by copper, and at a temperature of between 120.degree. and 160.degree. C., to dissolve at least 80% of cobalt and to oxidize less than 10% of sulphur to sulphate.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: January 21, 1997
    Inventors: Tao Xue, Ronald R. Dunn
  • Patent number: 5575907
    Abstract: The invention relates to a process for the recovery of raw materials from presorted collected waste, especially scrap electrochemical batteries and accumulators in which the scrap (10)is first mechanically prepared and divided into coarse and fine fractions (15, 16) which are further processed separately. Materials to be recovered are extracted by dissolution in steps by a first and a second solvent in a wet chemical preparation process from the fine fraction and then recovered individually from the two solutions.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: November 19, 1996
    Assignee: Batenus Umwelt - Und Recyclingtechnologie GmbH & Co. KG
    Inventor: Walter Lindermann
  • Patent number: 5571308
    Abstract: A method is provided for recovering nickel from high magnesium-containing lateritic ores which also contain iron. The ores which are referred to as saprolitic ores are subjected to leaching with a mineral acid from the group consisting of HCl, H.sub.2 SO.sub.4 and HNO.sub.3, HCl being preferred.Following leaching with HCl, for example, the pregnant solution obtained is separated from undissolved solids and the nickel preferably recovered by contacting the solution with a resin selective to nickel absorption. The raffinate remaining which contains iron and magnesium chlorides may be subjected to pyro-hydrolysis to produce their respective oxides and free HCl for recycle into the leaching system. The nickel is extracted from the resin using a stripping solution of said acid, and the nickel thereafter extracted from the nickel-loaded stripping solution.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: November 5, 1996
    Assignee: BHP Minerals International Inc.
    Inventors: Willem P. C. Duyvesteyn, Manuel R. Lastra, Houyuan Liu