Ferric Oxide Patents (Class 423/633)
  • Patent number: 10563066
    Abstract: The present invention relates to iron oxide red pigments having improved color values, a process for producing these improved iron oxide red pigments by the Penniman red process using nitrate (also referred to as nitrate process or direct red process) and an apparatus for the production thereof.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: February 18, 2020
    Assignee: LANXESS Deutschland GmbH
    Inventors: Waldemar Czaplik, Jurgen Kischkewitz, Stephan Spiegelhauer
  • Patent number: 10479893
    Abstract: The present invention relates to an improved process for producing iron oxide red pigments by the Penniman process using nitrate (also referred to as nitrate process or direct red process).
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: November 19, 2019
    Assignee: LANXESS Deutschland GmbH
    Inventors: Waldemar Czaplik, Guido Ketteler, Jurgen Kischkewitz
  • Patent number: 9157133
    Abstract: The present invention provides a hydrothermal oxidation method for producing alkali metal dichromate from carbon ferrochrome, and the method comprises the following steps: formulating an initial reaction liquid by mixing carbon ferrochrome, an alkaline substance and water, in which the actual addition amount of the alkali is controlled smaller than the theoretically required amount; adding the initial reaction liquid into a reaction kettle, charging an oxidizing gas into the reaction kettle, and allowing the reaction to proceed for 0.5 to 3 h at a temperature of 150° C. to 370° C. and a pressure of 2 Mpa to 24 MPa; carrying out solid-liquid separation, cooling the resultant filtrate to a temperature of ?12° C. to ?20° C.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: October 13, 2015
    Assignee: TIANJIN PASSION SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Zhu Ji, Jinsong Wang, Zhong Zhang, Yuqing Yang, Aishan Wang, Weiguo Song, Xinjian Yin, Qingting Wei, Hongwei Ru, Wenwen Zhang, Haijun Mei
  • Patent number: 8980218
    Abstract: The present application relates to a method for preparing stoichiometrically pure maghemite iron superparamagnetic nanoparticles. The method for preparing maghemite (?-Fe2O3) superparamagnetic nanoparticles disclosed in the present application is characterized by a step of reduction and appropriate steps of oxidation of the Fe-based composition obtained by the same. The maghemite nanoparticles obtained show a suitable size as well as binding properties without any surface modification. These nanoparticles can be therefore easily used as reagents for detection of inorganic and/or organic molecules as well as nanocarriers of organic and/or biomolecules.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: March 17, 2015
    Assignees: Universita' Degli Studi di Padova
    Inventors: Umberto Russo, Luca Nodari, Fabio Vianello, Massimiliano Magro, Giorgio Valle
  • Patent number: 8901027
    Abstract: A method of forming a Fischer-Tropsch catalyst by providing at least one metal nitrate solution, combining each of the at least one metal nitrate solutions with a precipitating agent whereby at least one catalyst precipitate is formed, and incorporating a strong base during precipitation, subsequent precipitation, or both during and subsequent precipitation. Catalysts produced via the disclosed method are also provided.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: December 2, 2014
    Assignee: Res USA, LLC
    Inventors: Deena Ferdous, Belma Demirel
  • Publication number: 20140348733
    Abstract: A method oxidizes ferrous iron to ferric iron. The method includes providing a liquid, which includes the ferrous iron, and a gas, which includes an oxidizing agent, such as oxygen and/or chlorine; providing two separate mixes, with both mixes including the gas and the liquid; and colliding the separate mixes, thereby obtaining the ferric iron.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Applicant: Tessenderlo Chemie NV
    Inventors: Philippe Quénon, Rudy Peeters
  • Publication number: 20140314658
    Abstract: The method of manufacturing magnetic particles, wherein the magnetic particles are magnetic particles for magnetic recording, and includes subjecting starting material magnetic particles to glass component-adhering treatment to be adhered with a glass component, and subjecting the magnetic particles after the glass component-adhering treatment to coercive force-reducing treatment with heating, to provide magnetic particles having lower coercive force than the starting material magnetic particles.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 23, 2014
    Applicant: FUJIFILM CORPORATION
    Inventor: Yasushi HATTORI
  • Patent number: 8865116
    Abstract: Disclosed is a method for preparing hematite iron oxide having various nanostructures, including: preparing a mixture solution by adding iron chloride and caffeine to a solvent and magnetically stirring; and performing hydrothermal synthesis, wherein the solvent is selected from water, ethanol, propanol and methanol. In accordance with the present disclosure, hematite iron oxide (?-Fe2O3) superstructures of various shapes, including grape, cube, dumbbell and microsphere shapes, can be synthesized in different solvents using caffeine. The shapes can be controlled variously via a simple one-step synthesis route without using a growth-inducing agent and without separation based on size. The prepared hematite iron oxide exhibits high coercivity at room temperature owing to its fine crystal structures and anisotropic shapes.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: October 21, 2014
    Assignee: Korea University Research and Business Foundation
    Inventors: Jong-Sung Yu, Nitin Kaduba Chaudhari, Hyoung Chan Kim, Chul Sung Kim, Jeunghee Park
  • Publication number: 20140294721
    Abstract: A sol-flame method includes 1) forming a sol-gel precursor solution of a source of a dopant; 2) coating a nanostructure or a thin film with the sol-gel precursor solution; and 3) subjecting the coated nanostructure or the coated thin film to flame annealing to form a doped nanostructure or a doped thin film.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Inventors: Yunzhe Feng, Xiaolin Zheng, In Sun Cho
  • Patent number: 8834600
    Abstract: The present invention relates to a zero-waste process for extraction of alumina from different types of bauxite ores and red mud residues and of titanium dioxide from ilmenite. Iron oxide is first reduced to metallic iron above the melting point of C-saturated cast iron alloy which yields a high-C iron alloy and an Al and Ti metal oxide rich slag which is then treated with alkali carbonate to form alkali aluminates and titanates. The alkali aluminates are separated by water leaching from which the hydroxide of alumina is precipitated by bubbling C02. The residue from water leaching is treated with sulphuric acid and Ti02 is precipitated via a hydrolysis route. The process recovers most of the metal values and generates only small quantities of silicious residues at pH 4-5 which can be used for soil conditioning.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: September 16, 2014
    Assignee: The University of Leeds
    Inventors: Animesh Jha, Pailo Antony Malpan, Vilas Dattatray Tathavadkar
  • Patent number: 8815192
    Abstract: A cyclical system that uses a metal hydroxide to produce a metal carbonate, remove carbon dioxide from a waste gas source, and produce more metal hydroxide needed for the beginning of the cycle. Initially, the metal hydroxide is mixed with waste gases in a carbon dioxide scrubber. The scrubber reacts the carbon dioxide with the metal hydroxide to produce a metal carbonate. Some of the metal carbon is removed, therein removing carbon dioxide from the environment. Some of the metal carbonate is heated to produce metal oxide and carbon dioxide. The carbon dioxide is drawn away. Oxygen is introduced into the reaction chamber. The oxygen reacts with the metal oxide to produce an oxidized metal oxide and heat. The oxidized metal oxide is reduced with an acid and volatile base to produce metal hydroxide. The metal hydroxide is recycled. The acid is regenerated. The volatile base is recovered and recycled.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: August 26, 2014
    Inventor: Calvin E. Phelps, Sr.
  • Publication number: 20140220444
    Abstract: Provided are a method of preparing iron oxide nanoparticles, iron oxide nanoparticles prepared thereby, and an anode material including the iron oxide nanoparticles.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Myung Ki Lee, Sung Bin Park, Sung Joong Kang, Wang Mo Jung
  • Patent number: 8790615
    Abstract: A method of synthesizing carbon-magnetite nanocomposites. In one embodiment, the method includes the steps of (a) dissolving a first amount of an alkali salt of lignosulfonate in water to form a first solution, (b) heating the first solution to a first temperature, (c) adding a second amount of iron sulfate (FeSO4) to the first solution to form a second solution, (d) heating the second solution at a second temperature for a first duration of time effective to form a third solution of iron lignosulfonate, (e) adding a third amount of 1N sodium hydroxide (NaOH) to the third solution of iron lignosulfonate to form a fourth solution with a first pH level, (f) heating the fourth solution at a third temperature for a second duration of time to form a first sample, and (g) subjecting the first sample to a microwave radiation for a third duration of time effective to form a second sample containing a plurality of carbon-magnetite nanocomposites.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: July 29, 2014
    Assignee: Board of Trustees of the University of Arkansas
    Inventor: Tito Viswanathan
  • Publication number: 20140205664
    Abstract: The present invention relates to an improved process for the production of finely divided haematite and of iron oxide red pigments made up of the finely divided haematite and the use of the finely divided haematites and iron oxide red pigments produced by this process.
    Type: Application
    Filed: September 28, 2012
    Publication date: July 24, 2014
    Applicant: LANXESS DEUTSCHLAND GmbH
    Inventors: Guido Ketteler, Udo Holtmann, Juergen Kischkewitz
  • Publication number: 20140158950
    Abstract: Nanocrystals comprising organic ligands at surfaces of the plurality of nanocrystals are provided. The organic ligands are removed from the surfaces of the nanocrystals using a solution comprising a trialkyloxonium salt in a polar aprotic solvent. The removal of the organic ligands causes the nanocrystals to become naked nanocrystals with cationic surfaces.
    Type: Application
    Filed: November 12, 2013
    Publication date: June 12, 2014
    Applicant: The Regents of The University of California
    Inventors: Brett Anthony Helms, Delia Jane Milliron, Evelyn Louise Rosen, Raffaella Buonsanti, Anna Llordes
  • Publication number: 20140113196
    Abstract: A method of preparing mesoporous nanostructured particles of a transition metal oxide. The method contains the steps of dissolving a soft-template compound in a solvent, dispersing a first or second row transition metal ion-containing compound, adjusting the pH value if necessary, and removing the solvent to obtain mesoporous nanostructured transition metal oxide powders, calcining the powders optionally to afford mesoporous nanostructured particles of the transition metal oxide. Also disclosed is particle prepared by the above-described method.
    Type: Application
    Filed: June 27, 2012
    Publication date: April 24, 2014
    Applicant: National University of Singapore
    Inventors: Palani Balaya, Srirama Hariharan
  • Patent number: 8664150
    Abstract: Methods of producing a metal oxide are disclosed. The method comprises dissolving a metal salt in a reaction solvent to form a metal salt/reaction solvent solution. The metal salt is converted to a metal oxide and a caustic solution is added to the metal oxide/reaction solvent solution to adjust the pH of the metal oxide/reaction solvent solution to less than approximately 7.0. The metal oxide is precipitated and recovered. A method of producing adsorption media including the metal oxide is also disclosed, as is a precursor of an active component including particles of a metal oxide.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: March 4, 2014
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Nicholas R. Mann, Troy J. Tranter
  • Patent number: 8597601
    Abstract: A process to use ferric sulphate equilibrium to reduce overall acid consumption and iron extraction, the process comprising the steps of: (i) sulphating; (ii) selective pyrolysis and (iii) selective dissolution.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: December 3, 2013
    Assignee: Vale S.A.
    Inventors: Tiago Valentim Berni, Antonio Clareti Pereira, Flavia Dutra Mendes
  • Publication number: 20130251624
    Abstract: Disclosed is a method for preparing hematite iron oxide having various nanostructures, including: preparing a mixture solution by adding iron chloride and caffeine to a solvent and magnetically stirring; and performing hydrothermal synthesis, wherein the solvent is selected from water, ethanol, propanol and methanol. In accordance with the present disclosure, hematite iron oxide (?-Fe2O3) superstructures of various shapes, including grape, cube, dumbbell and microsphere shapes, can be synthesized in different solvents using caffeine. The shapes can be controlled variously via a simple one-step synthesis route without using a growth-inducing agent and without separation based on size. The prepared hematite iron oxide exhibits high coercivity at room temperature owing to its fine crystal structures and anisotropic shapes.
    Type: Application
    Filed: November 7, 2012
    Publication date: September 26, 2013
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventor: Jong-Sung Yu
  • Publication number: 20130221289
    Abstract: The invention relates to a method for the preparation of nanoparticles in ionic liquids. Specifically, the invention relates to a simple, quick and effective method for the preparation of dispersions of nanoparticles (nanofluids) in an ionic liquid.
    Type: Application
    Filed: July 29, 2011
    Publication date: August 29, 2013
    Applicant: UNIVERSIDADE DE SANTIAGO DE COMPOSTELA
    Inventors: Alberto Arce Arce, Ana Soto Campos, Eva Rodil Rodriguez, Borja Rodriguez Cabo
  • Publication number: 20130189375
    Abstract: Embodiments of the present disclosure include visible light antimicrobial materials comprising ?-Fe2O3 nanostructures fabricated by electron beam evaporation, methods of making the antimicrobial materials, and methods of using the antimicrobial materials.
    Type: Application
    Filed: January 23, 2013
    Publication date: July 25, 2013
    Applicant: UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC.
    Inventor: UNIVERSITY OF GEORGIA RESEARCH FOUND
  • Publication number: 20130183614
    Abstract: A porous ferrite core material for an electrophotographic developer wherein the apparent density thereof is 1.5 to 1.9 g/cm3, the shape factor SF-2 thereof is 101 to 110 and the magnetization as measured with a VSM at 1K·1000/4?·A/m is 40 to 60 Am2/kg, a resin-coated ferrite carrier for an electrophotographic developer obtained by coating the surface of the porous ferrite core material with a resin, and an electrophotographic developer using the ferrite carrier.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 18, 2013
    Applicant: POWDERTECH CO., LTD.
    Inventor: Powdertech Co., Ltd.
  • Patent number: 8409544
    Abstract: Disclosed is a process of preparing magnetite nanoparticles, comprising the following steps: 1) preparing a ferric salt mixed system, wherein a soluble ferric salt is dissolved in glycol at ambient temperature, and then urea and polyethylene glycol are added and mixed homogeneously to obtain the trivalent iron salt mixed system, the mass ratio of glycol to the trivalent iron salt being 15:1 to 60:1, glycol to urea being 20:1 to 100:1, and glycol to polyethylene glycol being 20:1 to 100:1; 2) reacting, wherein the trivalent iron salt mixed system is transferred into a reaction autoclave, sealed and placed into a heating device to react at a temperature of 200 to 300° C. for 8 to 72 hours; and 3) washing, wherein after the reaction system is naturally cooled down to ambient temperature, the product is taken out, and washed with anhydrous ethanol and water in turn to obtain the magnetite nanoparticles. The soluble iron salt includes ferric chloride, ferric sulfate, ferric acetate and ferric nitrate.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: April 2, 2013
    Assignee: Xi'an Goldmag Nanobiotech Co. Ltd.
    Inventors: Mingli Peng, Caiquan Zhang, Yali Cui, Chao Chen, Jinghui Zeng
  • Patent number: 8349763
    Abstract: A carbon monoxide reduction catalyst for smoking articles includes particles, 90% by volume or more of which have a particle diameter within a range of 1 to 100 ?m. Each particle includes a transition metal oxide generated by heating a transition metal salt of an organic acid.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: January 8, 2013
    Assignee: Japan Tobacco Inc.
    Inventors: Kazunori Sugai, Yasunobu Inoue, Kiyohiro Sasakawa, Mitsuru Kondo, Tsutomu Sakai, Sadako Imai, Fumiko Murata
  • Patent number: 8343453
    Abstract: To provide a carrier for two-component electrophotographic developer not only having excellent fluidity but also having proper surface irregularities necessary for imparting electric charge, without generating cracks/chipping of particles even under an influence of stirring stress over a long period of time. A particle surface has raised parts of striped pattern extending almost continuously in a plurality of directions while being superposed on one another, with a surface formed with raised parts of striped pattern occupying 80% or more of the whole surface of a particle. Depths of grooves between the adjacent raised parts are 0.05 ?m or more and 0.2 ?m or less, average surface roughness Ra is 0.1 ?m or more and 0.3 ?m or less, roundness is 0.90 or more, and average particle size is 15 ?m or more and 100 ?m or less, and a carrier core material thus constituted is coated with resin. Thus, the carrier for two-component electrophotographic developer is prepared.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: January 1, 2013
    Assignees: Dowa Electronics Materials Co., Ltd., Dowa IP Creation Co., Ltd.
    Inventors: Tomoya Yamada, Isao Fujita, Yoshiaki Aiki
  • Patent number: 8206681
    Abstract: The present invention relates to a process for producing red iron oxide with only marginal goethite content, wherein a ferrous chloride feedstock is employed as starting material. The process comprises precipitating lepidocrocite seeds having a high BET surface area by mixing the ferrous chloride feedstock with an alkali and oxidizing the obtained mixture, and growing the lepidocrocite seeds, whereby the lepidocrocite converts into red iron oxide.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: June 26, 2012
    Assignee: Rockwood Italia SpA
    Inventor: Francesco Garetto
  • Patent number: 8182786
    Abstract: The present invention describes methods for preparing high quality nanoparticles, i.e., metal oxide based nanoparticles of uniform size and monodispersity. The nanoparticles advantageously comprise organic alkyl chain capping groups and are stable in air and in nonpolar solvents. The methods of the invention provide a simple and reproducible procedure for forming transition metal oxide nanocrystals, with yields over 80%. The highly crystalline and monodisperse nanocrystals are obtained directly without further size selection; particle size can be easily and fractionally increased by the methods. The resulting nanoparticles can exhibit magnetic and/or optical properties. These properties result from the methods used to prepare them. Also advantageously, the nanoparticles of this invention are well suited for use in a variety of industrial applications, including cosmetic and pharmaceutical formulations and compositions.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: May 22, 2012
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Stephen O'Brien, Ming Yin
  • Publication number: 20120100064
    Abstract: The present invention provides a process for production of a magnetic thin film which has insulation properties, serves as a permanent magnet, and has improved residual magnetization in comparison with prior arts, the magnetic thin film, and a magnetic material. When a magnetic thin film 3 is formed, an external magnetic field with a predetermined intensity is applied to a coating liquid containing magnetic particles containing epsilon-type iron-oxide-based compounds which have insulation properties and which serve as a permanent magnet, and the coating liquid is let cured in order to form the magnetic thin film 3. Accordingly, the magnetic particles containing the epsilon-type iron-oxide-based compounds can be fixed while being oriented regularly in a magnetization direction. This realizes the process for production of the magnetic thin film 3 which has insulation properties and which serve as a permanent magnet, the magnetic thin film 3, and a magnetic material 1.
    Type: Application
    Filed: June 24, 2010
    Publication date: April 26, 2012
    Applicant: The University of Tokyo
    Inventors: Shin-Ichi Ohkoshi, Asuka Namai, Kazuyuki Takami, Koutaro Tomita
  • Patent number: 8119097
    Abstract: The invention relates to a process for producing nanoparticulate solids by means of a Péclet number-stabilized gas-phase reaction.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: February 21, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Kleine Jäger, Julian Proelss
  • Patent number: 8110174
    Abstract: Disclosed is a reactive working material for use in a process of producing hydrogen by splitting water based on a two-step thermochemical water-splitting cycle through the utilization of solar heat, industrial waste heat or the like, which comprises a ferrite fine powder and a cubic zirconia supporting the ferrite fine powder. This reactive working material makes it possible to prevent scaling off of the ferrite fine powder from the zirconia fine powder due to volumetric changes of the ferrite fine powder during repeated use, and suppress growth of FeO grains due to repetition of melting and solidification when used as a reactive working material for a cyclic reaction under a high temperature of 1400° C. or more.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: February 7, 2012
    Assignee: Krosakiharima Corporation
    Inventor: Tatsuya Kodama
  • Patent number: 8092777
    Abstract: A process for producing an anisotropic magnetic material includes: preparing a feebly magnetic material capable of transforming into a magnetic material by a prescribed reaction, orienting the feebly magnetic material by imparting an external field to the feebly magnetic material, and transforming the oriented feebly magnetic material to a magnetic substance by the prescribed reaction.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: January 10, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, National Institute for Materials Science
    Inventors: Naoki Nakamura, Tetsuo Uchikoshi, Yoshio Sakka
  • Patent number: 8066969
    Abstract: This invention relates, in general, to a method of producing magnetic oxide nanoparticles or metal oxide nanoparticles and, more particularly, to a method of producing magnetic or metal oxide nanoparticles, which comprises (1) adding a magnetic or metal precursor to a surfactant or a solvent containing the surfactant to produce a mixed solution, (2) heating the mixed solution to 50-6001 C to decompose the magnetic or metal precursor by heating so as to form the magnetic or metal oxide nanoparticles, and (3) separating the magnetic or metal oxide nanoparticles. Since the method is achieved through a simple process without using an oxidizing agent or a reducing agent, it is possible to simply mass-produce uniform magnetic or metal oxide nanoparticles having desired sizes compared to the conventional method.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: November 29, 2011
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jin-Woo Cheon, Jung-Wook Seo, Jae-Hyun Lee
  • Patent number: 8038979
    Abstract: Disclosed is a method of manufacturing a metal oxide nano powder comprising preparing a first dispersed solution by adding a nano-sized metal powder to water and dispersing the metal powder within the water, performing a hydration reaction of the first dispersed solution at a temperature of about 30 to about 70° C. to generate a precipitation, and filtering and drying the precipitation to prepare a metal oxide powder. Also, disclosed is a metal oxide nano powder manufactured by the method described above, and having any one of a bar-form, a cube-form, and a fiber-form.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: October 18, 2011
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Chang Kyu Rhee, Min Ku Lee, Young Rang Uhm, Jin Ju Park, Byung Sun Han, Hi Min Lee, Seung-Hee Woo
  • Publication number: 20110251054
    Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.
    Type: Application
    Filed: May 24, 2011
    Publication date: October 13, 2011
    Applicant: SUD Chemie MT S.r.l.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Patent number: 8034320
    Abstract: A method and apparatus for producing iron ore pellets containing hematite is described. The pellets containing magnetite are exposed to microwave energy in a heat treatment furnace under oxidizing conditions to convert magnetite to hematite.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: October 11, 2011
    Assignee: Ore Pro PTY Ltd.
    Inventor: Paul Frank Rundel
  • Publication number: 20110244271
    Abstract: An aspect of the present invention relates to a method of manufacturing a hexagonal ferrite magnetic powder comprising discharging a melt of a starting material mixture comprising a glass-forming component and a hexagonal ferrite-forming component through an outlet provided in the bottom surface of the melting vat and supplying it between a pair of rotating milling rolls positioned beneath the melting vat; discharging an amorphous material from between the rolls by roll quenching the melt that has been supplied between the milling rolls, wherein at least an outermost layer portion of the milling rolls is comprised of a material with a Young's modulus of 500 GPa or higher and a Rockwell hardness of 85.0 HRA or higher, and the outermost layer portion has a thickness of 5 mm or greater and a surface roughness of 0.5 ?m or less.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 6, 2011
    Applicant: FUJIFILM Corporation
    Inventor: Takeshi KAKUTA
  • Publication number: 20110230339
    Abstract: Methods of producing a metal oxide are disclosed. The method comprises dissolving a metal salt in a reaction solvent to form a metal salt/reaction solvent solution. The metal salt is converted to a metal oxide and a caustic solution is added to the metal oxide/reaction solvent solution to adjust the pH of the metal oxide/reaction solvent solution to less than approximately 7.0. The metal oxide is precipitated and recovered. A method of producing adsorption media including the metal oxide is also disclosed, as is a precursor of an active component including particles of a metal oxide.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 22, 2011
    Applicant: BATTELLE ENERGY ALLIANCE, LLC
    Inventors: Nicholas R. Mann, Troy J. Tranter
  • Publication number: 20110217230
    Abstract: The invention relates to a process for producing nanoparticulate solids by means of a Péclet number-stabilized gas-phase reaction.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 8, 2011
    Applicant: BASF AG
    Inventors: Frank Kleine Jäger, Julian Prölß
  • Patent number: 7985398
    Abstract: The present teachings are directed towards a thermolysis method of producing iron-containing nanoparticles by providing an iron-containing component, a colloid stabilizing component, and an amount of water. The iron-containing component, the colloid stabilizing component, and the amount of water form a mixture, which is then heated to a temperature sufficient to form iron-containing nanoparticles, which are then isolated from the mixture. Another method is also provided which involves a repetitive shell growth method of producing iron-containing nanoparticles by providing a first amount of an iron-containing component and a colloid stabilizing component; the iron-containing component and the colloid stabilizing component are then mixed and heated to a temperature sufficient to form iron-containing nanoparticles.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: July 26, 2011
    Assignees: Honda Motor Co., Ltd., The Governors of the University of Alberta
    Inventors: Christopher J. Brooks, Jonathan Veinot, Janet MacDonald, Victoria Russell
  • Patent number: 7939463
    Abstract: A process for producing a high surface area iron material, comprising predominantly low crystalline iron oxides, starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m2/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: May 10, 2011
    Assignee: Sud-Chemie Inc.
    Inventors: Robert J. O'Brien, Samantha E. Sargent, Guido Petrini, Esterino Conca
  • Patent number: 7931886
    Abstract: According to the present invention there is provided a process for the agglomeration of titania slag particles comprising providing titania slag at a d50 particle size of below 106 ?m; mixing the slag particles with an organic binder; and agglomerating the mixture of the slag particles and organic binder into agglomerated particles with a d50 particle size in the range from 106 ?m to 1000 ?m. The agglomerated particles have a (TiO2 and FeO)/C mass ratio of more than 3.4. The invention also relates to such agglomated slag particles and a chloride process for the production of TiO2 wherein such agglomerated titania slag particles are used.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: April 26, 2011
    Assignee: Kumba Resources Limited
    Inventors: Pieter Adriaan Botha, Gert Hendrik Jacobus Coetzee, legal representative, Deon Bessinger, Benjamin Alexander Dippenaar
  • Publication number: 20110076224
    Abstract: The present invention relates to a process for producing red iron oxide with only marginal goethite content, wherein a ferrous chloride feedstock is employed as starting material. The process comprises precipitating lepidocrocite seeds having a high BET surface area by mixing the ferrous chloride feedstock with an alkali and oxidizing the obtained mixture, and growing the lepidocrocite seeds, whereby the lepidocrocite converts into red iron oxide.
    Type: Application
    Filed: February 15, 2008
    Publication date: March 31, 2011
    Inventor: Francesco Garetto
  • Patent number: 7892447
    Abstract: Nanoplatelet forms of metal hydroxide and metal oxide are provided, as well as methods for preparing same. The nanoplatelets are suitable for use as fire retardants and as agents for chemical or biological decontamination.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: February 22, 2011
    Assignee: Aqua Resources Corporation
    Inventor: Orville Lee Maddan
  • Patent number: 7892520
    Abstract: The present disclosure includes a method for preparing an aqueous dispersion of ?-Fe2O3 nanoparticles. The method includes grinding an iron (II) hydrated salt, an iron (III) hydrated salt, an inorganic salt, and alkali hydroxide in a grinding or milling machine. The inorganic salt may be a salt matrix that prevents growth and aggregation of the synthesized nanoparticles. The aqueous dispersion of ?-Fe2O3 nanoparticles may optionally be hydrothermally treated to become an aqueous dispersion of ?-Fe2O3 nanoparticles. Also disclosed is a method for preparing an mixture of ?-Fe2O3 nanoparticles and ?-Fe2O3 nanoparticles, in which at least an iron (III) hydrated salt, an inorganic salt, and alkali hydroxide are ground in a grinding or milling machine. Uses for the nanoparticles include: a magnetic resonance image contrast agent, a color print ink, an artificial tanning pigment, a photocatalyst for degradation of organic dye, a red pigment, an adsorbent for waste water treatment, a catalyst support, and a catalyst.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: February 22, 2011
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Jun Lu, Ka Ming Ng, Shihe Yang
  • Publication number: 20110033727
    Abstract: This application relates to the use of a wire comprising a coating of a bio plastics material as a bookbinding wire or paperclip. The coating is a closed coating offering the wire a good corrosion protection when exposed at normal ambient conditions during use as bookbinding wire or as paperclip and the coating is degradable, biodegradable or compostable once said wire is exposed to an environment suitable for decomposition of said coating. More particularly, the application relates to the use of and to a bookbinding wire and paperclip with a PLA coating. The application further relates to a method for recycling said bookbinding wires and paperclips.
    Type: Application
    Filed: April 20, 2009
    Publication date: February 10, 2011
    Inventors: André Grob, Peter Poelman, Alain Leplae
  • Publication number: 20100307980
    Abstract: A method of producing an adsorption medium to remove at least one constituent from a feed stream. The method comprises dissolving and/or suspending at least one metal compound in a solvent to form a metal solution, dissolving polyacrylonitrile into the metal solution to form a PAN-metal solution, and depositing the PAN-metal solution into a quenching bath to produce the adsorption medium. The at least one constituent, such as arsenic, selenium, or antimony, is removed from the feed stream by passing the feed stream through the adsorption medium. An adsorption medium having an increased metal loading and increased capacity for arresting the at least one constituent to be removed is also disclosed. The adsorption medium includes a polyacrylonitrile matrix and at least one metal hydroxide incorporated into the polyacrylonitrile matrix.
    Type: Application
    Filed: August 17, 2010
    Publication date: December 9, 2010
    Applicant: BATTELLE ENERGY ALLIANCE, LLC
    Inventors: Tranter Troy J., Mann Nicholas R., Todd Terry A., Herbst Ronald S.
  • Publication number: 20100285371
    Abstract: Disclosed is a separator comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule. Also, disclosed are an electrochemical device comprising the above separator and a method for identifying the origin or kind of the separator itself or the electrochemical device comprising the same by using the above separator. Further, disclosed is a method for manufacturing the aforementioned separator, the method comprising a step of forming a specific pattern by coating inorganic particles having a unique spectrum or color pattern on at least one area selected from the group consisting of a surface of a porous substrate and a porous part of the substrate.
    Type: Application
    Filed: September 21, 2007
    Publication date: November 11, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Sang-Young Lee, Dae-Jong Seo, Dong-Myung Kim, Seok-Koo Kim, Hyun-Min Jang
  • Publication number: 20100279126
    Abstract: A method for production of ceramic slabs comprising a mixture of atomised ceramic powders and a mixture of alpha hematites.
    Type: Application
    Filed: September 9, 2008
    Publication date: November 4, 2010
    Applicant: GRANITIFIANDRE SOCIETA' PER AZIONI
    Inventor: Giovanni Pellicelli
  • Patent number: 7811543
    Abstract: A method and apparatus for producing surface stabilized nanometer-sized particles includes the steps of mixing reactants, a surface-stabilizing surfactant, and a high boiling point liquid to form a mixture, continuously passing the mixture through an ultrasonic spray nozzle to form a mist of droplets of the mixture, injecting the mist directly into a furnace to cause a reaction between species of the mixture, and collecting the nanometer-sized products. The ultrasonic nozzle is positioned directly at one end of the heating furnace, preferably the top end, for travel of the droplets through the furnace. The continuous liquid-flow process, along with certain operating parameters, eliminates the need for dilution of the high boiling point liquid with a low boiling point solvent as in the prior art, significantly increases the yield, improves the quality of the product, and makes the process scalable.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: October 12, 2010
    Assignee: Irilliant, Inc.
    Inventors: Yuri T. Didenko, Yuhua Ni
  • Publication number: 20100247423
    Abstract: The present invention relates to a goethite nanotube. Particularly, the present invention is directed to goethite nanotubes, which can be used as a catalyst relating to environment or a drug delivery system, and process for preparing the goethite nanotube, and process for preparing magnetite and hematite nanoparticles.
    Type: Application
    Filed: October 24, 2008
    Publication date: September 30, 2010
    Applicant: SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATION
    Inventors: Taeghwan Hyeon, Taekyung Yu