Nickel(ni) Or Cobalt(co) Recovered As Free Metal Patents (Class 75/738)
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Patent number: 10501334Abstract: An aqueous cobalt chloride solution refinement method, in which metallic nickel is washed with an acidic liquid having a pH of not more than 2.5 before the metallic nickel is brought into contact with the aqueous solution containing cobalt chloride. Since the metallic nickel is washed with the acidic liquid having a pH of not more than 2.5, a passive film on a surface of the metallic nickel is removed and therefore, when the metallic nickel comes in contact with the aqueous solution containing cobalt chloride, an impurity more noble than the metallic nickel can be precipitated by a cementation reaction. In addition, since the metallic nickel is only washed with acid to be brought into contact with the aqueous solution containing cobalt chloride, impurities can be easily removed from the aqueous solution containing cobalt chloride.Type: GrantFiled: May 20, 2016Date of Patent: December 10, 2019Assignee: SUMITOMO METAL MINING CO., LTD.Inventors: Hideki Ohara, Satoshi Asano, Toshirou Tan, Masatoshi Takano
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Patent number: 8951332Abstract: Urban ore is a mixture of a lot of metallic elements, and these metallic elements need to be separately collected therefrom. However, because the content of each metallic element is very small, it has been extremely difficult to selectively collect the required metallic element. In order to solve the problem, there is provided a metal-ion adsorbent which is for use in a method for collecting metal ions present in a liquid, and in which a continuously porous support having large numbers of pores of uniform size and shape, and a compound having a metal ion-binding group is chemically bonded to the inner surfaces of the pores, whereby a material and a method with which rare-metal ions contained in urban ore are efficiently and inexpensively taken out are provided.Type: GrantFiled: January 19, 2011Date of Patent: February 10, 2015Assignee: National Institute for Materials ScienceInventors: Sherif El-Safty, Ahmed Shahat Ahmed, Kohmei Halada
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Patent number: 8911531Abstract: A hydrometallurgical plant for nickel laterite ore extraction having a plurality of treatment facility lines wherein the plant is capable of minimizing a decrease in throughput when line failure occurs and efficiently restoring normal operation status Each line of the treatment facility includes a pretreatment step, a leaching step, a solid-liquid separation step, a neutralization step, a zinc removal step, a sulfurization step and a detoxification step. The lines are coupled by pipelines, each having a valve, installed after the solid-liquid separation step for sending a liquid from the solid-liquid separation step to the neutralization step in each line and/or after the sulfurization step for sending a liquid from the sulfurization step to the detoxification step in each line.Type: GrantFiled: October 1, 2010Date of Patent: December 16, 2014Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Osamu Nakai, Toru Kitazaki, Shinichi Heguri, Yoshitomo Ozaki, Keisuke Shibayama
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Patent number: 8545690Abstract: A purification method of zinc sulfate leachate is provided. The purification method of zinc sulfate leachate comprises contacting the zinc sulfate leachate with a zinc powder under a non-oxidizing atmosphere to form solution containing a precipitate of impurity metal; and removing the precipitate of impurity metal from the solution and getting a purified zinc sulfate leachate. A purified zinc sulfate leachate may be prepared with a higher purification efficiency and a lower energy consumption than prior art.Type: GrantFiled: May 25, 2012Date of Patent: October 1, 2013Assignees: Yunnan Metallurgical Group Co., Ltd., Yunnan Yongchang Pb&Zn Co., Ltd.Inventors: Jikun Wang, Ying Dong, Guangshen He, Changwu Zhou, Guobang Zhu, Jiancun Wu
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Patent number: 8308842Abstract: Pyrophoric nanoparticles and methods of producing the same are provided herein. An exemplary method of producing pyrophoric nanoparticles can include providing a first aqueous solution comprising at least one metal salt and an aliphatic polyether; providing a second solution comprising a metal hydride reducing agent; continuously combining the first and second solutions to produce nanoparticles in a liquid phase; separating the nanoparticles from the liquid phase; and drying the nanoparticles to form pyrophoric nanoparticles. The pyrophoric nanoparticles can have a diameter ranging from about 1 nm to about 50 nm.Type: GrantFiled: December 8, 2010Date of Patent: November 13, 2012Assignee: Xerox CorporationInventors: Kimberly D. Nosella, Santiago Faucher, Ke Zhou, Paul J. Gerroir, Richard P. N. Veregin, Karen A. Moffat
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Patent number: 7658995Abstract: A nickel powder exhibits superior oxidation behavior, reduction behavior and sintering behavior in a production process for a multilayer ceramic capacitor and is suitable for the capacitor; a production method therefor is also provided. The nickel powder, which may be used as a raw material, is treated with a sulfur-containing compound, and the sulfur-containing compound is coated on the surface thereof, or alternatively, a nickel-sulfur compound layer is formed on the surface thereof.Type: GrantFiled: June 13, 2005Date of Patent: February 9, 2010Assignee: Toho Titanium Co., Ltd.Inventor: Mitsugu Yoshida
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Patent number: 7534285Abstract: A method for extraction a metal from a mineral ore including a refractory ore contained in a metal. The method includes concentration of refractory ore followed by micronization of the concentrate until gold is liberated by the extraction solution and mixing of micronized concentrate with concentration rejects or by-products to facilitate recovery of the treatment solution.Type: GrantFiled: August 17, 2006Date of Patent: May 19, 2009Inventors: Gilles Fiset, Edmond St-Jean
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Patent number: 7279024Abstract: High purity cobalt with a very few content of impurities such as copper, a method of manufacturing thereof, and high purity cobalt targets are provided. The cobalt containing impurities such as copper is dissolved in a hydrochloric acid solution, and the concentration of the hydrochloric acid of the aqueous solution of cobalt chloride is adjusted to 0.1 kmol/m3 to 3 kmol/m3. Then, cobalt is added in the aqueous solution of cobalt chloride, and an inert gas is injected into the solution with agitating, in order to convert the divalent copper ions contained in the aqueous solution of cobalt chloride to monovalent copper ions. Then, the aqueous solution of cobalt chloride is fed into a column filled up with the anion exchange resins. Cobalt is not absorbed on the anion exchange resins although the monovalent copper ions are absorbed on the anion exchange resins. Therefore, copper can be separated from the aqueous solution of cobalt chloride.Type: GrantFiled: March 17, 2004Date of Patent: October 9, 2007Assignees: Sony CorporationInventors: Masahito Uchikoshi, Norio Yokoyama, Tamas Kekesi, Minoru Isshiki
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Patent number: 7156894Abstract: A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, producing a concentrate of refractory sulfide minerals from the separated fines and adding the concentrate to the heap, bioleaching the heap to thereby oxidize iron sulfides contained therein, and hydrometallurgically treating the bioleached ore to recover precious metal values contained therein.Type: GrantFiled: November 24, 2003Date of Patent: January 2, 2007Assignee: Geobiotics, LLCInventor: William J. Kohr
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Patent number: 6395242Abstract: The present invention relates to an apparatus and a process for producing zinc oxide from a zinc-bearing material. The process according to the present invention comprises the steps of leaching the complex sulfide material with hydrochloric acid and oxygen; precipitating iron from the leach solution using magnesium oxide and oxygen; removing copper, silver, cadmium, cobalt and lead from the leach solution by cementation with zinc dust; precipitating zinc oxide from the leach solution using magnesium oxide; and spray roasting the remaining magnesium chloride leach solution to regenerate hydrochloric acid and magnesium oxide. The present invention further relates to processes for recovering copper, silver, lead, and iron from complex sulfide materials.Type: GrantFiled: October 1, 1999Date of Patent: May 28, 2002Assignee: Noranda Inc.Inventors: Carole Allen, Peter Kondos, Serge Payant, Gezinus Van Weert, Anthonie Van Sandwijk
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Patent number: 5976218Abstract: 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 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: GrantFiled: April 29, 1997Date of Patent: November 2, 1999Assignee: Henkel CorporationInventors: Michael J. Virnig, J. Murdoch MacKenzie
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Patent number: 5954854Abstract: Method for recovering etchant from etching waste liquid 11 containing iron chloride is disclosed, wherein iron powder is mixed with iron chloride waste solution containing metal ions having a lesser ionization tendency than iron ion in an mixing vessel so as to cause a reaction between the iron powder and the metal ions and remove the precipitated metal from the iron chloride waste solution.Type: GrantFiled: June 26, 1997Date of Patent: September 21, 1999Assignee: Astec Irie Co., Ltd.Inventors: Tsutomu Inoshita, Tadao Kitazawa, Hiroyuki Matsumoto, Masaki Nagashima, Hiroshi Yoshino, Yonejiro Nagaoka, Katsumasa Mito
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Patent number: 5951954Abstract: A method for utilization of zinc byproducts in the manufacture of clear brine fluids comprising the step of mixing zinc feedstock containing metal impurities with a halogenic acid to produce an impure zinc halide solution. The metal impurities are removed from the zinc halide solution in a two-stage process: the first stage comprises the steps of precipitating and filtering out manganese and iron and the second stage comprises the steps of contacting the zinc halide solution with elemental zinc to cement out the remaining metals comprising nickel, lead, cadmium, copper, mercury and cobalt. Preferably, the zinc halide solution is contacted with zinc shot in multiple passes through zinc-filled column systems. The pH is adjusted between each step, if necessary, to maintain the pH in the first stage within a range of from about 3.5 to 4.5 and the alkalinity during the second stage at less than 1.0% zinc oxide.Type: GrantFiled: December 18, 1997Date of Patent: September 14, 1999Assignee: Tetra Technologies, Inc.Inventors: Russell A. Fisher, Paul Wayland, David J. Hanlon
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Patent number: 5702500Abstract: An integrated process for the treatment of spent catalysts containing mainly molybdenum, vanadium, nickel, cobalt and, alumina to produce ammonium metavanadate, vanadium pentoxide, molybdic trioxide, fused alumina and a high grade nickel/cobalt alloy essentially free of aluminum.Type: GrantFiled: November 2, 1995Date of Patent: December 30, 1997Assignee: Gulf Chemical & Metallurgical CorporationInventors: Zenon R. Llanos, Guido F. Provoost, William G. Deering, Frans J. Debaene
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Patent number: 5454856Abstract: A process for recovering nickel that is in soluble form and in relatively low concentrations, typically up to 2% by weight in a liquor, comprises: (a) precipitating nickel from solution (preferably as a hydroxide or sulphide); (b) adding an inert particulate carrier and a flocculent to the liquor to form flocs comprising nickel precipitate, inert particulate carrier, and flocculent; (c) separating the flocs from the liquor (preferably by gravitational settling or magnetic separation); and (d) separating the nickel precipitate from the flocs (preferably by agitating the flocs). The nickel precipitate and flocs are preferably then passed through a filter to remove the nickel as filter cake. The inert carrier is preferably sand, alumina, magnetite, hematite, ilmenite or calcite. The flocculent is preferably a cationic, non-ionic or anionic flocculent.Type: GrantFiled: June 23, 1994Date of Patent: October 3, 1995Assignee: Modern Environmental Service TrustInventor: Geoffrey R. Browne
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Patent number: 5393320Abstract: A process for the extraction of nickel, cobalt and manganese from slurries of their ores such as laterite, saprolite or manganese nodules in an aqueous acid solution while irradiating the solution with electromagnetic energy such as microwave energy. The acid may be hydrochloric acid, sulphurous acid and/or sulphuric acid and the acid solution may be blended with high concentrations of halite and magnesium ions to further control the dissolution of magnesia from the ore. A reactor including electromagnetic wave generators is also included.Type: GrantFiled: March 24, 1994Date of Patent: February 28, 1995Assignee: RMG Services Pty. Ltd.Inventor: Rodolfo A. Gomez
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Patent number: 5284505Abstract: Nickel ion contained in a ferric chloride waste liquid is recovered as metallic nickel by the following method. Firstly, the ferric chloride waste liquid is added with metallic iron and then heated and stirred to precipitate the metallic nickel. Thereafter the sludge containing this metallic nickel precipitate and the suspension are separated. Then, after the ferric chloride waste liquid is poured into the sludge and then heated and stirred so as to dissolve an iron constituent of the sludge and react it with the ferric chloride waste liquid, the suspension and the sludge are separated. After that, the sludge after the concentration process is taken out.Type: GrantFiled: December 31, 1992Date of Patent: February 8, 1994Assignee: Hakima Kasaku Kogyo Kabushiki KaishaInventors: Keiichi Tachibana, Ryoichi Tachibana
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Patent number: 5238663Abstract: The invention relates to a process for recovering nickel from industrial effluents, characterized in thata) the effluent loaded with nickel is allowed to settle in a corrugated-plate separator (1) for the removal of solid constituents contained therein,b) a flocculant is added and the mixture is neutralized with alkali or mineral acid,c) after flocculation, the mixture is again allowed to settle in a corrugated-plate separator (3) andd) filtered through a sand filter (4),e) the filtered effluent is passed through a sequestering cation exchanger system containing three exchanger columns, the first column (5) being loaded up to breakthrough of nickel, the second column (6) serving as a guard filter and the third column (7) being regenerated or standing by in the freshly regenerated state,f) the particular column loaded with nickel is regenerated with dilute mineral acid, andg) the regenerate is treated with sodium hypophosphite in the presence of catalytic quantities of sodium borohydride, and to equipment forType: GrantFiled: September 12, 1991Date of Patent: August 24, 1993Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Werner Vikari, Ralf Steinstrasser, Heinrich Nikolaus, Gunther Feldmann-Schlohbohm, Klaus Behne
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Patent number: 5200042Abstract: A process for recovery of copper from a copper residue obtained during purification of a zinc sulfate solution comprises leaching the copper residue in a concentrated sulfuric acid solution in the presence of an oxidant at a temperature of between 60.degree. and 80.degree. C. and separating the solids from the leach solution, electrowinning copper from the leach solution, returning the electrolyte solution to the initial leaching stage to initiate dissolution of the copper residue, and bleeding a portion of the electrolyte solution to reduce the concentration of impurities in the solution.Type: GrantFiled: June 10, 1991Date of Patent: April 6, 1993Assignee: Noranda Inc.Inventors: George Houlachi, Carole Allen, Francis Belanger