Elemental Selenium Or Tellurium Patents (Class 423/510)
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Patent number: 11001763Abstract: Embodiments of an organosulfur capture or scavenger nanomaterial of this disclosure include a sorbent containing a composition of a mixed metal oxide, the metal being in various oxidation states. In embodiments, the mixed metal is manganese, iron, nickel, copper, or zinc. In some embodiments the sorbent includes a first mixed metal oxide and a second different metal or mixed metal oxide. The scavenger material may be synthesized from a metal precursor salt, neutralized and dried, and then washed or soaked to remove one or more byproducts. The resulting sorbent is in nanoparticulate form and has an amorphous non-crystalline structure.Type: GrantFiled: October 6, 2017Date of Patent: May 11, 2021Assignee: H2SZERO, LLCInventor: Michael Callaway
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Patent number: 9244019Abstract: A method for measuring defects in a silicon substrate obtained by silicon ingot pulling, wherein the defects have a size of less than 20 nm. The method includes applying a first defect consolidation heat treatment to the substrate at a temperature of between 750° C. and 850° C. for a time period of between 30 minutes and 1 hour to consolidate the defects; applying a second defect enlargement heat treatment to the substrate at a temperature of between 900° C. and 1000° C. for a time period of between 1 hour and 10 hour hours to enlarge the defects to a size of greater than or equal to 20 nm, with the enlarged defects containing oxygen precipitates; measuring size and density of the enlarged defects in a surface layer of the substrate; and calculating the initial size of the defects on the basis of the measurements of the enlarged defects.Type: GrantFiled: July 12, 2012Date of Patent: January 26, 2016Assignee: SOITECInventors: Patrick Reynaud, Christophe Gourdel
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Patent number: 8920684Abstract: The present invention discloses an Al—Sb—Te phase change material used for PCM and fabrication method thereof. Said phase change material, which can be prepared by PVD, CVD, ALD, PLD, EBE, and ED, is a mixture of three elements aluminum (Al), antimony (Sb) and tellurium (Te) with a general formula of Alx(SbyTe1)1-x, where 0<x?0.85, 0.67?y?7. Said material is electrically driven from outside. By adjusting the content of three elements in the mixture, storage materials with different crystallization temperatures, melting temperatures and activation energies of crystallization can be achieved. Any two elements of aluminum, antimony and tellurium can be bonded to each other, so the adjustability is very high, maintaining the phase change properties in a wide range.Type: GrantFiled: June 24, 2011Date of Patent: December 30, 2014Assignee: Shanghai Institute of Microsystem and Information Technology, Chinese Academy of SciencesInventors: Cheng Peng, Liangcai Wu, Feng Rao, Zhitang Song, Bo Liu, Xilin Zhou, Min Zhu
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Patent number: 8900543Abstract: A method for separating tellurium includes separating and recovering tellurium (Te) from a dissolved solution containing the tellurium using a solvent extraction by an extractant, which contains one selected from a group consisting of tributyl phosphate (TBP), tris(2-ethylhexyl) phosphate (TEHP) and a combination thereof. The method may separate and recover the tellurium as a high-priced metallic element from a material, such as a Bi2Te3-based waste thermoelectric material, which contains not only the tellurium but also other metallic elements, simply and economically using a solvent extraction, whereby the tellurium with high yield and high purity can be separated, recovered and recycled.Type: GrantFiled: June 20, 2013Date of Patent: December 2, 2014Assignees: Korea Institute of Science and Technology, Recytec. Inc.Inventors: Hwa Young Lee, Joong Kee Lee, Jae Gyu Jee, Joon Chul Choi
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Publication number: 20140186706Abstract: A method is presented for fabricating an anode preloaded with consumable metals. The method provides a material (X), which may be one of the following materials: carbon, metals able to be electrochemically alloyed with a metal (Me), intercalation oxides, electrochemically active organic compounds, and combinations of the above-listed materials. The method loads the metal (Me) into the material (X). Typically, Me is an alkali metal, alkaline earth metal, or a combination of the two. As a result, the method forms a preloaded anode comprising Me/X for use in a battery comprising a M1YM2Z(CN)N·MH2O cathode, where M1 and M2 are transition metals. The method loads the metal (Me) into the material (X) using physical (mechanical) mixing, a chemical reaction, or an electrochemical reaction. Also provided is preloaded anode, preloaded with consumable metals.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Sharp Laboratories of America, Inc.Inventors: Long Wang, Yuhao Lu, Jong-Jan Lee
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Patent number: 8753591Abstract: Molybdic oxide is recovered from molybdenite by a multistep process in which (A) the molybdenite is converted to soluble and insoluble molybdic oxide by pressure oxidation, (B) the insoluble molybdic oxide is converted to soluble molybdic oxide by alkaline digestion and then combined with the soluble molybdic oxide, and (C) the molybdenum values of the combined streams are extracted into an organic phase using a nonprimary amine. The extracted molybdenum values are recovered from the organic phase using aqueous ammonia to form ammonium dimolybdate (ADM) which is recovered as refined crystals from a two-step calcination process.Type: GrantFiled: February 28, 2013Date of Patent: June 17, 2014Assignee: Kennecott Utah Copper LLCInventors: Mike Rockandel, Claus Stoiber, Robert E. Crossman
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Publication number: 20140112860Abstract: A method for separating tellurium includes separating and recovering tellurium (Te) from a dissolved solution containing the tellurium using a solvent extraction by an extractant, which contains one selected from a group consisting of tributyl phosphate (TBP), tris(2-ethylhexyl) phosphate (TEHP) and a combination thereof. The method may separate and recover the tellurium as a high-priced metallic element from a material, such as a Bi2Te3-based waste thermoelectric material, which contains not only the tellurium but also other metallic elements, simply and economically using a solvent extraction, whereby the tellurium with high yield and high purity can be separated, recovered and recycled.Type: ApplicationFiled: June 20, 2013Publication date: April 24, 2014Inventors: Hwa Young LEE, Joong Kee LEE, Jae Gyu JEE, Joon Chul CHOI
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Publication number: 20140045248Abstract: A system for removing selenium from a solid feed stream includes a selenium dissolver configured to selectively dissolve elemental selenium from the solid feed stream and to produce a selenium rich solution and a crystallizer coupled to the selenium dissolver and configured to receive the selenium rich solution from the dissolver, to add an acid to the selenium rich solution, to remove purified selenium from the selenium rich solution, and to remove sulfur dioxide from the selenium rich solution.Type: ApplicationFiled: August 13, 2013Publication date: February 13, 2014Applicant: Enviro Water Minerals Company, Inc.Inventor: Paul Steven Wallace
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Publication number: 20130273370Abstract: A nanoscale heterostructure tellurium-based nanowire structure, including a rod-like tellurium nanowire structure and a metal telluride agglomeration connected to the rod-like nanowire structure. The metal telluride agglomeration may have an octahedral shape or a platelet shape. The agglomeration structures are selected from the group comprising lead telluride, cadmium telluride, bismuth telluride, and combinations thereof.Type: ApplicationFiled: May 10, 2013Publication date: October 17, 2013Inventors: Yue Wu, Genqiang Zhang, Haiyu Fang, Haoran Yang
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Publication number: 20130248443Abstract: Wastewater, for example flue gas desulphurization blowdown water, containing soluble selenium is treated in a bioreactor. Microorganisms in the reactor reduce the selenium to elemental selenium, which is insoluble. The elemental selenium is discharged from the reactor in waste sludge also comprising biomass and other suspended solids. Non-microbial suspended solids are removed by way of acid dissolution followed by de-watering. The remaining sludge is burned at a temperature below the selenium oxidation temperature to remove biomass while leaving selenium particles behind.Type: ApplicationFiled: December 17, 2010Publication date: September 26, 2013Inventors: Jie Guan, Oijia Fu, Hong Zhou, Yan Jin, Weiqing Xu, Jungang Zhang, Yanping Liu, Minggang She
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Publication number: 20130171271Abstract: Methods for treating cancers, tumors, and neoplasms using a composition comprising one or more generally regarded as safe (GRAS) compounds selected from the group of components consisting of vitamins, selenium, fatty acids, fatty acid salts, and fatty acid esters, and mixtures of two or more said components, either as a stand-alone treatment or in combination with one or more anti-cancer drugs or devices or other anti-neoplastic agents, treatments, or devices are provided. In some instances, concomitant hyperthermia therapy is employed. Also provided are compositions and kits containing the compositions, for implement various aspects of the invention.Type: ApplicationFiled: July 25, 2011Publication date: July 4, 2013Applicant: CHEMOTHERAPEUTICS, LLCInventors: Gary Keeling, Keith B. Hoffman
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Patent number: 8454928Abstract: A process for depositing a tellurium-containing film on a substrate is disclosed, including (a) providing a substrate in a reactor; (b) introducing into the reactor at least one tellurium-containing precursor having the formula TeLn or cyclic LTe(-L-)2TeL, wherein at least one L contains a N bonded to one said Te, “n” is between 2-6, inclusive, and each “L,” is independently selected from certain alkyl and aryl groups. The process further includes (c) optionally, introducing at least one M-containing source, wherein M is Si, Ge, Sb, Sn, Pb, Bi, In, Ag or Se, or a combination of any of those; (d) optionally, introducing a hydrogen-containing fluid; (e) optionally, introducing an oxygen-containing fluid; (f) optionally, introducing a nitrogen-containing fluid; (g) reacting the precursor(s) and M-containing source(s), if any, in the reactor with the hydrogen-, oxygen- and/or nitrogen-containing fluid, if any; and (h) depositing a tellurium-containing film onto the substrate.Type: GrantFiled: September 17, 2008Date of Patent: June 4, 2013Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventor: Christian Dussarrat
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Patent number: 8361431Abstract: A process and method for recovering elemental selenium, selenite or selenate from minerals and selenium salts solutions using a reducing sugar to reduce selenium before precipitating the elemental selenium, selenite and/or the selenate.Type: GrantFiled: June 29, 2009Date of Patent: January 29, 2013Assignee: Pacific Rare Specialty Metals & Chemicals, Inc.Inventors: Robert John Hisshion, Rosauro C. Manalo
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Patent number: 8357316Abstract: One gamma radiation source comprises 75Selenium or a precursor thereof, wherein the 75Selenium is provided in the form of one or more thermally stable compounds, alloys or mixtures with one or more nonmetals which upon irradiation do not produce products capable of sustained emission of radiation which would unacceptably interfere with the gamma radiation of 75Selenium. A further gamma radiation source comprises 75Selenium or a precursor thereof, wherein the 75Selenium is provided in the form of one or more thermally stable compounds, alloys or mixtures with one or more metals or nonmetals, the neutron irradiation of which does produce products capable of sustained emission of radiation which would acceptably complement the gamma radiation of 75Selenium.Type: GrantFiled: September 28, 2009Date of Patent: January 22, 2013Inventors: John J. Munro, III, Kevin J. Schehr
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Patent number: 8343446Abstract: The oxine ligands 5-chloro-8-hydroxyquiniline and 5-sulfoxyl-8-hydroxyquinoline are covalently bound, using, for example, the Mannich reaction, to a silica gel polyamine composite made from a silanized amorphous silica xerogel and polyallylamine. The resulting modified composites, termed CB-1 (X?Cl) and SB-1 (X?SO3H), respectively, show a clear selectivity for trivalent over divalent ions and selectivity for gallium over aluminum. The compounds of the invention can be applied for the sequestration of metals, such as heavy metals, from contaminated mine tailing leachates.Type: GrantFiled: October 13, 2011Date of Patent: January 1, 2013Assignee: The University of MontanaInventors: Edward Rosenberg, Paul Miranda, Yuen Onn Wong
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Publication number: 20120301383Abstract: The present invention relates to new compositions of matter, particularly metals and alloys, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique electronic character.Type: ApplicationFiled: March 20, 2012Publication date: November 29, 2012Inventor: Christopher J. Nagel
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Publication number: 20120266658Abstract: The invention provides a gas sensitive material made from microcrystalline selenium (preferably selenium nanowire) and a gas sensor having an element structure wherein the gas sensitive material is disposed between two electrodes. The invention allows for the kind of organic gas to be distinguished, because microcrystalline selenium reacts with organic gas molecules with high sensitivity at room temperature without being influenced by humidity, and the magnitude of change of the value of the current flowing at a fixed voltage varies depending on the kind of an organic gas to be sensed.Type: ApplicationFiled: November 4, 2010Publication date: October 25, 2012Applicant: KAKE EDUCATIONAL INSTITUTIONInventors: Norio Akiyama, Tsukio Ohtani
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Patent number: 8277772Abstract: A method of extracting Te and bismuth oxide and recovering byproduct comprises: leaching raw materials with a Te content of ?1.8% by utilizing a leaching system containing H2SO4, Cl?, Br?, NH4+ and NaClO3, reducing leach solution with SO2 gas by precipitation method after separating impurities from it, washing with concentrated hydrochloric acid to obtain tellurium precipitation (18), purifying to obtain Te with a purity of higher than 99.99%. The filtrate produced is used for extracting Bi2O3 with a purity of higher than 99.99% when Bi content in the raw material is ?2%. Acidic waste solution produced during the process could be returned to the leaching step for recycle.Type: GrantFiled: June 2, 2009Date of Patent: October 2, 2012Inventors: Jun Wang, Xiuzhen Wang, Zexian Song
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Patent number: 8268285Abstract: A process and method for recovering elemental tellurium from minerals and acidic solutions using a reducing sugar as the reducing agent in order to reduce and precipitate tellurium as tellurium dioxide (TeO2) from which elemental tellurium may be recovered.Type: GrantFiled: June 29, 2009Date of Patent: September 18, 2012Assignee: Pacific Rare Specialty Metals and Chemicals, Inc.Inventors: Robert John Hisshion, Crispinne C. Patiño
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Publication number: 20120225352Abstract: Selenium or selenium-containing compounds may be used as electroactive materials in electrodes or electrochemical devices. The selenium or selenium-containing compound is mixed with a carbon material.Type: ApplicationFiled: February 24, 2012Publication date: September 6, 2012Inventors: Ali Abouimrane, Khalil Amine
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Publication number: 20120202062Abstract: Novel methods for biological effective, stable amorphous and monoclinic selenium nanoparticles are disclosed. They are prepared by reacting selenium source with a redox agent in an aqueous media at a temperature between 0-100° C. in the presence of nucleic acids or poly/oligosaccharide or their mixtures.Type: ApplicationFiled: August 10, 2011Publication date: August 9, 2012Inventor: Xueyun Gao
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Patent number: 8092776Abstract: A process and method for recovering elemental selenium, selenite or selenate from minerals and selenium salts solutions using a reducing sugar to reduce selenium before precipitating the elemental selenium, selenite and/or the selenate.Type: GrantFiled: August 13, 2010Date of Patent: January 10, 2012Assignee: Pacific Rare Specialty Metals and Chemicals, Inc.Inventors: Robert John Hisshion, Rosauro C. Manalo
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Publication number: 20110186779Abstract: A method for reclaiming a semiconductor material from a glass substrate is disclosed, the method comprises the steps of providing at least one glass substrate having the semiconductor material disposed thereon, reducing the glass substrate having a semiconductor material disposed thereon to a plurality of glass particles having the semiconductor material disposed thereon by introducing a source of energy thereto, separating the semiconductor material from the plurality of glass particles to obtain semiconductor particles, and pyrometall?rgicaHy refining the semiconductor particles and the fine glass particles.Type: ApplicationFiled: August 13, 2009Publication date: August 4, 2011Inventors: John Bohland, Andreas Wade
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Publication number: 20110076208Abstract: A method of extracting Te and bismuth oxide and recovering byproduct comprises: leaching raw materials with a Te content of ?1.8% by utilizing a leaching system containing H2SO4, Cl?, Br?, NH4+ and NaClO3, reducing leach solution with SO2 gas by precipitation method after separating impurities from it, washing with concentrated hydrochloric acid to obtain tellurium precipitation (18), purifying to obtain Te with a purity of higher than 99.99%. The filtrate produced is used for extracting Bi2O3 with a purity of higher than 99.99% when Bi content in the raw material is ?2%. Acidic waste solution produced during the process could be returned to the leaching step for recycle.Type: ApplicationFiled: June 2, 2009Publication date: March 31, 2011Inventors: Jun Wang, Xiuzhen Wang, Zexian Song
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Publication number: 20110048982Abstract: The present invention is a method and material for using a sorbent material to capture and stabilize mercury. The method for using sorbent material to capture and stabilize mercury contains the following steps. First, the sorbent material is provided. The sorbent material, in one embodiment, is nano-particles. In a preferred embodiment, the nano-particles are unstabilized nano-Se. Next, the sorbent material is exposed to mercury in an environment. As a result, the sorbent material captures and stabilizes mercury from the environment. In the preferred embodiment, the environment is an indoor space in which a fluorescent has broken.Type: ApplicationFiled: October 7, 2008Publication date: March 3, 2011Applicant: BROWN UNIVERSITYInventors: Robert H. Hurt, Steven P. Hamburg, Love Sarin, Indrek Kulaots
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Publication number: 20110053766Abstract: The present invention is a method and material for using a sorbent material to capture and stabilize mercury. The method for using sorbent material to capture and stabilize mercury contains the following steps. First, the sorbent material is provided. The sorbent material, in one embodiment, is nano-particles. In a preferred embodiment, the nano-particles are unstabilized nano-Se. Next, the sorbent material is exposed to mercury in an environment. As a result, the sorbent material captures and stabilizes mercury from the environment. In the preferred embodiment, the environment is an indoor space in which a fluorescent has broken.Type: ApplicationFiled: August 27, 2010Publication date: March 3, 2011Applicant: BROWN UNIVERSITYInventors: ROBERT H. HURT, STEVEN P. HAMBURG, LOVE SARIN, INDREK KULAOTS
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Publication number: 20100329968Abstract: A process and method for recovering elemental selenium, selenite or selenate from minerals and selenium salts solutions using a reducing sugar to reduce selenium before precipitating the elemental selenium, selenite and/or the selenate.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Inventors: ROBERT JOHN HISSHION, Rosauro C. Manalo
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Publication number: 20100329969Abstract: A process and method for recovering elemental selenium, selenite or selenate from minerals and selenium salts solutions using a reducing sugar to reduce selenium before precipitating the elemental selenium, selenite and/or the selenate.Type: ApplicationFiled: August 13, 2010Publication date: December 30, 2010Inventors: ROBERT JOHN HISSHION, Rosauro C. Manalo
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Publication number: 20100326840Abstract: A process and method for recovering elemental tellurium from minerals and acidic solutions using a reducing sugar as the reducing agent in order to reduce and precipitate tellurium as tellurium dioxide (TeO2) from which elemental tellurium may be recovered.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Inventors: ROBERT JOHN HISSHION, Crispinne C. Patino
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Publication number: 20100329970Abstract: A method for the recovery of copper, indium, gallium, and selenium is provided. The method includes steps of using a mixed solution containing a hydrochloric acid and hydrogen peroxide to dissolve the copper, indium, gallium, and selenium. After using the hydrazine to separate the selenium out, the copper is reduced by indium metal. Later, a combination of a supported liquid membrane (SLM) and a strip dispersion solution separates the gallium from the indium. The acid performed in all the steps of the method is hydrochloric acid. Therefore, the copper, indium, gallium, and selenium can be separated one by one in a single production line without changing the solution during the operation process, thereby simplifying the process, shortening the operation time and lowering the manufacture cost.Type: ApplicationFiled: September 1, 2010Publication date: December 30, 2010Applicant: SOLAR APPLIED MATERIALS TECHNOLOGY CORP.Inventors: Jian-Jou LIAN, I-Wen HUANG, Chung-Ching LEE, Hai-Jui CHEN
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Publication number: 20100247489Abstract: The present invention relates to a composition comprising one or more minerals selected from the group consisting of selenium, molybdenum or tungsten, which is carried out galenically or chemically in a way that the mineral or minerals are released completely or in part, just before, during or shortly after arrival at the large intestine, and their use in the manufacture of a medicament for administering to a mammal for the prevention or reduction of gas formation in the colon thus conditioned abdominal complaints, particularly bloatings, meteorism or abdominal cramps. Furthermore, the invention relates to a procedure for the isolation of acetogenic and butyrogenic bacterial strains that are suitable for therapeutic purposes outlined above.Type: ApplicationFiled: December 21, 2007Publication date: September 30, 2010Inventor: Roland SAUR-BROSCH
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Publication number: 20100233761Abstract: A method of fractionating biomass, by permeability conditioning biomass suspended in a pH adjusted solution of at least one water-based polar solvent to form a conditioned biomass, intimately contacting the pH adjusted solution with at least one non-polar solvent, partitioning to obtain an non-polar solvent solution and a polar biomass solution, and recovering cell and cell derived products from the non-polar solvent solution and polar biomass solution. Products recovered from the above method. A method of operating a renewable and sustainable plant for growing and processing algae.Type: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Inventors: Thomas J. Czartoski, Robert Perkins, Jorge L. Villanueva, Glenn Richards
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Publication number: 20100233131Abstract: Provided are a cell therapeutic composition containing selenium, a method of dedifferentiating selenium-treated cells, a cell therapeutic composition containing cells dedifferentiated from the selenium-treated cells by the same method, and a cell therapeutic composition containing cells redifferentiated from the dedifferentiated cells. The dedifferentiated cells, and cells redifferentiated therefrom, can be used to treat a variety of diseases.Type: ApplicationFiled: July 31, 2008Publication date: September 16, 2010Applicant: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPInventors: Soo Kyung Kang, Jeong Hwan Kim
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Publication number: 20100189634Abstract: The invention relates to microbiological processes using non-selenium-respiring bacteria for the production of elemental selenium nanospheres having a size in the 50-500 nm range and compositions comprising said nanospheres. The invention further concerns grey elemental selenium nanospheres directly obtainable by the processes of the invention. The compositions and materials of the invention are useful, in particular, as food additives and for use as raw material in the microelectronic and optical industries.Type: ApplicationFiled: July 15, 2008Publication date: July 29, 2010Inventors: József Prokisch, Mohsen A. Zommara
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Publication number: 20100189612Abstract: The present invention relates to a method and system for recovery of waste.Type: ApplicationFiled: April 8, 2010Publication date: July 29, 2010Inventors: Vasilis Fthenakis, Wenming Wang
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Publication number: 20100178229Abstract: Use of ionic liquids as solvents for elements such as phosphorus, selenium, tellurium and sulphur, and compounds thereof.Type: ApplicationFiled: August 21, 2006Publication date: July 15, 2010Applicant: THE QUEEN'S UNI.IONIC LIQUID LAB. RESEARCH CENTREInventors: Martin John Earle, Eva Boros, Kenneth Richard Seddon, Manuela A. Gilea, Joseph S. Vyle
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Publication number: 20090226540Abstract: Methods for treating feline hyperthyroidism comprising (1) administering to a feline an antithyroid agent in conjunction with feeding the feline a composition comprising from about 0.1 to less than about 1 mg/kg iodine or (2) feeding the feline a composition comprising from about 0.1 to less than about 1 mg/kg selenium on a dry matter basis.Type: ApplicationFiled: January 26, 2007Publication date: September 10, 2009Applicant: HILL's PET NUTRITION INCInventors: Karen Joy Wedekind, Dale Allen Fritsch, Chadwick Everett Dodd, Timothy Arthur Allen
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Patent number: 7563429Abstract: A process for reclaiming spent selenium filter mass containing an inert material. The spent mass is treated with a hydrogen peroxide solution for leaching out selenium content from unspent active substance present in the filter mass to form selenious acid. The filter mass is treated with aqua regia solution to dissolve mercury selenide present in the mass. The aqua regia solution is separated from the mass and isolated. Suitably, the filter mass, which now contains inert carrier material, is transferred with the isolated selenious acid, to production of new selenium filter mass. After partial neutralization of the aqua regia solution, mercury is precipitated out for disposal. Before this, elemental selenium can be separated from the aqua regia solution by adjusting the pH level and used advantageously for production of new filter mass. Thusly, reclaimed selenium content and inert carrier material can be advantageously used for production of new selenium filters.Type: GrantFiled: December 16, 2004Date of Patent: July 21, 2009Assignee: Outotec OyjInventor: Yngve Lundgren
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Patent number: 7479262Abstract: One object of the present invention is to provide a separation process that enables the efficient separation of selenium, tellurium, and platinum group elements from a material containing selenium/tellurium and platinum group elements. In order to achieve this object, the invention provides a separation process for platinum group elements comprising: a step (A) for treating a material containing selenium/tellurium and platinum group elements with alkali, a step (B) for leaching selenium/tellurium, and a step (C) for separating the platinum group element-containing leaching residue and the selenium/tellurium leachate.Type: GrantFiled: March 14, 2003Date of Patent: January 20, 2009Assignee: Mitsubishi Materials CorporationInventors: Satoshi Okada, Takahiro Uno, Kazusuke Sato, Shoji Ishiwata
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Patent number: 6875377Abstract: A gamma radiation source comprising selenium-75 or a precursor therefore, wherein the selenium is provided in the form of one or more thermally stable compounds, alloys, or mixed metal phases.Type: GrantFiled: April 20, 2000Date of Patent: April 5, 2005Assignee: AEA Technology PLCInventor: Mark Golder Shilton
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Patent number: 6861037Abstract: The present invention focuses on the method for the removal of impurities, such as tellurium and bismuth, from gold concentrate containing sulfides. According to the present method, the impurities are leached from the gold concentrate with the aid of an acidic aqueous solution, at an elevated temperature, whereby the impurities dissolve and the gold remains in the concentrate.Type: GrantFiled: August 10, 2000Date of Patent: March 1, 2005Assignee: Outokumpu OyjInventors: Raimo Leimala, Olli Hyvärinen
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Publication number: 20040033172Abstract: Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se is transformed into insoluble compound, and Se is separated; (2) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se elution preventive agent is added, and dust is formed into scale; (3) dust in combustion exhaust gas is collected by dust collector, dust is formed into slurry by making use of part of circulation liquid in desulfurization apparatus, and tetravalent Se in dust slurry is transformed into insoluble compound, which is separated into solid and liquid; (4) dust is separated from combustion exhaust gas by dust collector, and it is heated to gasify Se, and is led into desulfurization apparatus, etc.Type: ApplicationFiled: November 14, 2002Publication date: February 19, 2004Inventors: Taku Shimizu, Kazuaki Kimura, Kiyoshi Okazoe, Atsushi Tatani, Naohiko Ukawa, Masao Hino, Susumu Okino, Takashi Haruki, Toru Takashina, Eiji Ochi
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Patent number: 6517792Abstract: Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se is transformed into insoluble compound, and Se is separated; (2) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se elution preventive agent is added, and dust is formed into scale; (3) dust in combustion exhaust gas is collected by dust collector, dust is formed into slurry by making use of part of circulation liquid in desulfurization apparatus, and tetravalent Se in dust slurry is transformed into insoluble compound, which is separated into solid and liquid; (4) dust is separated from combustion exhaust gas by dust collector, and it is heated to gasify Se, and is led into desulfurization apparatus, etc.Type: GrantFiled: August 8, 2001Date of Patent: February 11, 2003Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Taku Shimizu, Kazuaki Kimura, Kiyoshi Okazoe, Atsushi Tatani, Naohiko Ukawa, Masao Hino, Susumu Okino, Takashi Haruki, Toru Takashina, Eiji Ochi
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Patent number: 6350419Abstract: The present invention provides a novel process for the removal and recovery of metals from waste waters and process streams. The process of the present invention utilizes a combination of a supported liquid membrane (SLM) and a strip dispersion to improve extraction of the target species while increasing membrane stability and reducing processing costs. The process is illustrated with cobalt removal and recovery with unexpected results, such as unexpectedly high cobalt fluxes and a very high cobalt concentration in the strip solution recovered. This process can remove other metals, such as copper, zinc, nickel, mercury, lead, cadmium, silver, europium, lanthanum, neodymium, praseodymium, gadolinium, and selenium, from the feed stream to provide a concentrated strip solution of the target species.Type: GrantFiled: February 4, 2000Date of Patent: February 26, 2002Assignee: Commodore Separation Technologies Inc.Inventor: W. S. Winston Ho
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Patent number: 6113863Abstract: Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350.degree. C. or less, dust is separated, Se is transformed into insoluble compound, and Se is separated; (2) combustion exhaust gas is cooled to 350.degree. C. or less, dust is separated, Se elution preventive agent is added, and dust is formed into scale; (3) dust in combustion exhaust gas is collected by dust collector, dust is formed into slurry by making use of part of circulation liquid in desulfurization apparatus, and tetravalent Se in dust slurry is transformed into insoluble compound, which is separated into solid and liquid; (4) dust is separated from combustion exhaust gas by dust collector, and it is heated to gasify Se, and is led into desulfurization apparatus, etc.Type: GrantFiled: January 26, 1996Date of Patent: September 5, 2000Assignee: Mitsubishi Jukogyo Kabushiki KaishiInventors: Taku Shimizu, Kazuaki Kimura, Kiyoshi Okazoe, Atsushi Tatani, Naohiko Ukawa, Masao Hino, Susumu Okino, Takashi Haruki, Toru Takashina, Eiji Ochi
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Patent number: 5939042Abstract: The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave. The excess of selenium and/or sulphur allows the formation of Ag.sub.2 Se or Ag.sub.2 S, which remains insoluble during autoclave leaching.Type: GrantFiled: July 27, 1998Date of Patent: August 17, 1999Assignee: Noranda, Inc.Inventors: Jack S. Stafiej, Pierre Claessens, Carl W. White
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Patent number: 5804424Abstract: The invention relates to Proteobacteria that show unusually high level resistance to a wide range of metal oxides and oxyanions and to methods using selected Proteobacteria subgroups for efficient reduction of certain metal oxides and oxyanions to the free metal. High level resistance was shown to be affected by growth conditions, and was observed in facultative photoheterotrophs such as Rhodobacter sphaeroides grown either chemoheterotrophically or photoheterotrophically. The disclosed methods are adaptable to the production of hydrogen from cultures of Peoteobacteria grown in the presence of tellurite class oxyanions with carbon dioxide and nitrogen as carbon and nitrogen sources. The methods have commercial application for efficient bioremediation of carbon dioxide and nitrogen.Type: GrantFiled: July 13, 1994Date of Patent: September 8, 1998Inventors: Samuel Kaplan, Mark D. Moore
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Patent number: 5435830Abstract: First, an aqueous solution of water soluble compounds or an aqueous solution of water soluble complexes, which is a salt of elements belonging to the 6A, 7A, 1B, 2B, 3B, 4B, 5B, 6B, or 8 group in a periodic table are prepared. The pH of the aqueous solution is adjusted and titanium trichloride is added thereto. The aqueous solution provided with titanium trichloride is stirred at temperature below the boiling point of the solution under atmospheric pressure or under high pressure. Then, by the reducing action of the titanium trichloride, a fine titanium-free powder selected from the group consisting of a metal powder, an alloy powder containing two or more of metals and non-metals, or a compound powder containing two or more of metals and non-metals is obtained.Type: GrantFiled: June 9, 1994Date of Patent: July 25, 1995Assignee: Murata Manufacturing Co., Ltd.Inventors: Atsuo Senda, Takuji Nakagawa, Yoshihiko Takano
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Patent number: 5405589Abstract: Methods and apparatus for producing selenium-72, separating it from its daughter isotope arsenic-72, and generating multiple portions of a solution containing arsenic-72 from a reusable parent substance comprised of selenium-72. The invention provides apparatus which can be located at a site where arsenic-72 is used, for purposes such as PET imaging, to produce arsenic-72 as needed, since the half-life of arsenic-72 is very short.Type: GrantFiled: August 29, 1994Date of Patent: April 11, 1995Assignee: The Regents of the University of CaliforniaInventor: Dennis R. Phillips
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Patent number: 5352608Abstract: The invention relates to Proteobacteria that show unusually high level resistance to a wide range of metal oxides and oxyanions and to methods using selected subgroups for efficient reduction of certain metal oxides and oxyanions to the free metal. High level resistance was shown to be affected by growth conditions, and was observed in facultative photoheterotrophs such as Rhodobacter sphaeroides grown either chemoheterotrophically or photoheterotrophically.Type: GrantFiled: January 13, 1992Date of Patent: October 4, 1994Assignee: The Board of Regents, The University of TexasInventors: Samuel Kaplan, Mark D. Moore