Ion Exchanging Or Liquid-liquid Extracting Patents (Class 423/112)
  • Patent number: 10632701
    Abstract: A manufacturing method of a honeycomb structure includes a forming step of preparing a forming raw material containing a cordierite forming material and an inorganic binder, and kneading and forming the prepared forming raw material to have a honeycomb shape; and a firing step of firing the prepared formed body. In the forming step, as the inorganic binder, smectite is used in which at least parts of interlayer metal cations are ion-exchanged with non-metal cations. In the smectite, a total amount of sodium to be contained in the smectite is 1.6 mass % or less in terms of oxides to 100 mass % of the smectite. A content ratio of the smectite in the forming raw material is 0.5 parts by mass or more and 4.0 parts by mass or less to 100 parts by mass of the cordierite forming material.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: April 28, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Takayoshi Shibayama, Hideki Oka, Shuji Ueda, Hiroyuki Suenobu
  • Patent number: 10487027
    Abstract: The invention relates to zeolitic absorbents based on at least one zeolite with hierarchical porosity, containing barium or barium and potassium, to the uses thereof for separating para-xylene from aromatic fractions containing 8 carbon atoms, and to the method for separating para-xylene from aromatic fractions containing 8 carbon atoms.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: November 26, 2019
    Assignee: Arkema France
    Inventors: Catherine Laroche, Ludivine Bouvier, Cecile Lutz, Arnaud Baudot
  • Patent number: 10422021
    Abstract: This method for producing a vanadium compound has an alkaline leaching step for immersing incineration ash in an alkaline solution to cause vanadium to leach from the incineration ash into the alkaline solution and obtain a leachate slurry, a solid-liquid separation step for separating the leachate slurry obtained in the alkaline leaching step into a solid and liquid followed by removing insoluble matter to obtain a leachate, a pH adjustment step for adding acid to the leachate following solid-liquid separation to make the leachate acidic, an aging step for aging the leachate following pH adjustment until a precipitate forms in the leachate, and a separation step for separating the precipitate from the leachate following the aging step.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: September 24, 2019
    Assignee: SHOWA DENKO K.K.
    Inventors: Gaku Oriji, Kenzo Hanawa
  • Patent number: 10059658
    Abstract: Method for preparation of 5-alkylsalicylaldoximes with formula 1, where R is a C6-C16 alkyl group, consisting in that into a water-alcohol solvent system, p-alkylphenol, sodium hydroxide, chloroform and hydroxylamine are introduced, while in relation to the alkylphenol used, sodium hydroxide and chloroform are used in amounts from the stoichiometric amount to a 100% excess, and hydroxylamine is used in amounts from the stoichiometric amount to a 60% excess, and the reaction is carried out at a temperature of 60-75° C. for 1.5-4 h, and then, at a temperature of 20-30° C., the post-reaction mixture is acidified till the pH of the aqueous phase <7.0 is obtained, and next, an alcohol-water azeotrope is distilled off with an admixture of unreacted chloroform, the residue is mixed with a neutral C5-C10 hydrocarbon solvent, the layers are separated, and the solvent is distilled off from the organic phase.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: August 28, 2018
    Assignee: POLITECHNIKA WARSZAWSKA
    Inventors: Krzysztof Bujnowski, Ludwik Synoradzki, Jerzy Wisialski, Agnieszka Krolikowska, Jacek Bordzilowski, Marcin Koziorowski, Roman Zadrozny, Anna Jerzak, Krzysztof Dzienis
  • Patent number: 10040746
    Abstract: The invention is directed to a method for recovering carboyxlic acid from an magnesium carboxylate containing aqueous mixture, including the steps of: contacting the aqueous mixture with an acidic ion exchanger, thereby forming a carboxylic acid mixture and an ion exchanger loaded with magnesium ions; contacting the ion exchanger loaded with magnesium ions with a hydrochloric acid solution, thereby forming a magnesium chloride solution; and thermally decomposing the magnesium chloride solution at a temperature of at least 300° C., thereby forming magnesium oxide (MgO) and hydrogen chloride (HCl).
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: August 7, 2018
    Assignee: PURAC BIOCHEM B.V.
    Inventors: Adriaan Dirk Kon, André Banier De Haan, Paulus Loduvicus Johannes Van Der Weide, Tanja Ðekic {hacek over (Z)}ivkovic, Lucien Henri Leander Jozef De Koninck
  • Patent number: 9776885
    Abstract: Provided is a production method for refining iron oxide (hematite), which has such a low sulfur content as to be used as an iron-making raw material, from a leach residue containing iron oxide produced by a high pressure acid leach (HPAL) process. In the method for refining iron oxide for ironmaking by a process of adding sulfuric acid to nickel oxide ore and then leaching nickel from the nickel oxide ore using a pressure vessel, an amount of the sulfuric acid added is 150 kg or more and 220 kg or less per ton of nickel oxide ore.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: October 3, 2017
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yoshitomo Ozaki, Manabu Enomoto, Hirofumi Shouji, Tatsuya Higaki
  • Patent number: 9441285
    Abstract: New compounds which meet general formula (I): where: m=0, 1 or 2; R1 and R2=a C6 to C12, straight-chain or branched, hydrocarbon group; R3=H, a C1 to C12, straight-chain or branched, hydrocarbon group, optionally comprising one or more heteroatoms; a C3 to C8 monocyclic hydrocarbon group, optionally comprising one or more heteroatoms, or a monocyclic (hetero)aryl group; or else R2 and R3 together form a —(CH2)n— group where n=1 to 4; R4=a C2 to C8, straight-chain or branched, hydrocarbon group, or a monocyclic aromatic group; R5=H, or a C1 to C12, straight-chain or branched, hydrocarbon group.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: September 13, 2016
    Assignee: Areva Mines
    Inventors: Guilhem Arrachart, Nicolas Aychet, Gilles Bernier, Fabien Burdet, Antoine Leydier, Manuel Miguirditchian, Stephane Pellet-Rostaing, Gabriel Plancque, Raphael Turgis, Elisabeth Zekri
  • Patent number: 9422217
    Abstract: The invention is directed to a method for recovering carboyxlic acid from an magnesium carboxylate containing aqueous mixture, including the steps of: contacting the aqueous mixture with an acidic ion exchanger, thereby forming a carboxylic acid mixture and an ion exchanger loaded with magnesium ions; contacting the ion exchanger loaded with magnesium ions with a hydrochloric acid solution, thereby forming a magnesium chloride solution; and thermally decomposing the magnesium chloride solution at a temperature of at least 300° C., thereby forming magnesium oxide (MgO) and hydrogen chloride (HCl).
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: August 23, 2016
    Assignee: PURAC BIOCHEM BV
    Inventors: Adriaan Dirk Kon, André Banier De Haan, Paulus Loduvicus Johannes Van Der Weide, Tanja Ðekic Živkovic, Lucien Henri Leander Jozef De Koninck
  • Patent number: 9410227
    Abstract: The present disclosure relates to processes for recovering rare earth elements from various materials. The processes can comprise leaching the at least one material with at least one acid so as to obtain a leachate comprising at least one metal ion and at least one rare earth element, and a solid, and separating the leachate from the solid. The processes can also comprise substantially selectively removing at least one of the at least one metal ion from the leachate and optionally obtaining a precipitate. The processes can also comprise substantially selectively removing the at least one rare earth element from the leachate and/or the precipitate.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 9, 2016
    Assignee: ORBITE TECHNOLOGIES INC.
    Inventors: Richard Boudreault, Joël Fournier, Raymond Simoneau, Maria Cristina Garcia, Denis Primeau, Heinz Krivanec, Carsten Dittrich
  • Patent number: 9308521
    Abstract: Process for preparing a modified zeolite Y which process comprises subjecting zeolite Y having a silica to alumina molar ratio of at least 10 to calcination at a temperature of from 700 to 1000° C. wherein (i) the steam partial pressure is at most 0.06 bar at a temperature of from 700 to 800° C., (ii) the steam partial pressure is at most 0.08 bar at a temperature of from 800 to 850° C., (iii) the steam partial pressure is at least 0.03 bar at a temperature of from 850 to 900° C., and (iv) the steam partial pressure is at least 0.05 bar at a temperature of from 900 to 950° C. and (v) the steam partial pressure is at least 0.07 bar at a temperature of from 950 to 1000° C.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: April 12, 2016
    Assignee: PQ CORPORATION
    Inventors: David Allen Cooper, Cornelius Ouwehand, Laszlo Domokos, Lay Hwa Ong
  • Patent number: 9234260
    Abstract: Provided is a method that selectively extracts and, at a low cost, recovers indium from an acidic solution containing indium and gallium. The present invention is a method that is for isolating a valuable metal and that, by means of subjecting an acidic solution containing indium and gallium to a solvent extraction that is by means of an extraction agent comprising an amide derivative represented by a general formula, extracts indium from the acidic solution. In the formula, R1 and R2 each indicate the same or a different alkyl group, R3 indicates a hydrogen atom or an alkyl group, and R4 indicates a hydrogen atom or any given group, other than an amino group, bonded to the ?-carbon as an amino acid. The general formula preferably has a glycine unit, a histidine unit, a lysine unit, an aspartic acid unit, or an N-methylglycine unit.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: January 12, 2016
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SUMITOMO METAL MINING CO., LTD.
    Inventors: Masahiro Goto, Fukiko Kubota, Yuzo Baba
  • Patent number: 8968698
    Abstract: Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracting the molybdenum and/or other value metal from the aqueous solution by contacting it with an organic phase solution containing a phosphinic acid, stripping the molybdenum and/or other value metal from the organic phase solution by contacting it with an aqueous phase strip solution containing an inorganic compound and having a ?1.0 M concentration of free ammonia, and recovering the molybdenum and/or other value metal by separating it from the aqueous phase strip solution. When the molybdenum and/or other value metal are present only in low concentration, the processes can include an organic phase recycle step and/or an aqueous phase strip recycle step in order to concentrate the metal prior to recover.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: March 3, 2015
    Assignee: Cytec Technology Corp.
    Inventors: Troy Allan Bednarski, Violina Antoneta Cocalia, Matthew Dean Soderstrom, Eduardo Alberto Kamenetzky, Andrew Michael Cameron, Douglas Harris
  • Publication number: 20150010447
    Abstract: A method of purification for recycling of gallium-69 isotopes includes processes of proton irradiation and dissolution for a silver alloy plating target with gallium-69. After the proton irradiation and dissolution, a high concentration elution liquid of gallium-69 and germanium-68 is obtained by washing through an ion-exchange resin to filter out gallium-69 solution, followed by neutralizing precipitation, drying, and sintering treatments to obtain a gallium oxide. The gallium oxide can be dissolved to produce a solid target, and the washing processes can be repeated. The solid target after use can be placed in recycling again. This method is not only implemented to reduce the cost of production and comply with recycling notion nowadays, but also enhance efficiency in the practical application of radioisotopes.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Inventors: Ming-Hsin Li, Hsin-Han Hsieh
  • Publication number: 20140301919
    Abstract: A process for the extraction of alumina from an aluminum-bearing ore or concentrate, comprising the steps of leaching the aluminum-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of from 90° C. to the boiling point of the solution and at an Eh of at least 200 mV. After a liquid/solids separation step, the solution obtained is subjected to steps for removal of iron and for recovery of alumina.
    Type: Application
    Filed: March 13, 2014
    Publication date: October 9, 2014
    Inventors: Vaikuntam I. Lakshmanan, Ramamritham Sridhar, Md. Abdul Halim, Dipak Patel, Paul Doherty
  • Patent number: 8834818
    Abstract: There is provided a hydrometallurgical process of recovering indium and gallium values from mixtures thereof with other metal values for example recycled and scrap solar panel cells which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably via the simultaneous addition of sulfuric acid and hydrogen peroxide to the leach vessel, so as to form indium and gallium salt species of at least the major proportion of the indium and gallium values in the mixture, extracting the indium and gallium values with an organic extractant by adjusting the pH so as to extract individually the indium and gallium values with the organic extractant, stripping indium and gallium values from the extractant using an acid and an alkaline solution respectively and recovering the indium and gallium values.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: September 16, 2014
    Assignee: Molycorp Minerals Canada ULC
    Inventor: Casare G. Ferron
  • Patent number: 8795613
    Abstract: The aluminum content of neopentasilane is reduced by treatment with organic compounds D which contain N, O, and/or S atoms and which have free electron pairs on these atoms.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: August 5, 2014
    Assignee: Wacker Chemie AG
    Inventor: Dennis Troegel
  • Patent number: 8721998
    Abstract: The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium bicarbonate is used as an acidity balancing agent, in order to adjust the balancing pH value of the extraction separation process which uses an acidic organic extractant, improve the extraction capacity of organic phase, and increase the concentration of metal ions in the loaded organic phase.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: May 13, 2014
    Assignee: Grirem Advanced Materials Co., Ltd.
    Inventors: Xiaowei Huang, Zhiqi Long, Xinlin Peng, Hongwei Li, Guilin Yang, Dali Cui, Chunmei Wang, Na Zhao, Liangshi Wang, Ying Yu
  • Publication number: 20140065037
    Abstract: There is provided a hydrometallurgical process of recovering indium and gallium values from mixtures thereof with other metal values for example recycled and scrap solar panel cells which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably via the simultaneous addition of sulfuric acid and hydrogen peroxide to the leach vessel, so as to form indium and gallium salt species of at least the major proportion of the indium and gallium values in the mixture, extracting the indium and gallium values with an organic extractant by adjusting the pH so as to extract individually the indium and gallium values with the organic extractant, stripping indium and gallium values from the extractant using an acid and an alkaline solution respectively and recovering the indium and gallium values.
    Type: Application
    Filed: November 22, 2011
    Publication date: March 6, 2014
    Applicant: MOLYCORP MINERALS CANADA ULC
    Inventor: Cesare G. Ferron
  • Patent number: 8597600
    Abstract: There are provided processes for extracting aluminum ions from aluminous ores and for preparing alumina. Such processes can be used with various types of aluminous ores such as aluminous ores comprising, for example, various types of metals such as Fe, K, Mg, Na, Ca, Mn, Ba, Zn, Li, Sr, V, Ni, Cr, Pb, Cu, Co, Sb, As, B, Sn, Be, Mo, or mixtures thereof.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: December 3, 2013
    Assignee: Orbite Aluminae Inc.
    Inventors: Richard Boudreault, Serge Alex, Fabienne Biasotto
  • Patent number: 8568671
    Abstract: Provided a method for preparing metallurgical-grade alumina by using fluidized-bed fly ash, comprising: a) removing iron by wet magnetic separation after crushing the fly ash; b) reacting the fly ash after magnetic separation with hydrochloric acid to obtain a hydrochloric leachate; c) passing the hydrochloric leachate through macro-porous cationic resin to deeply remove iron to obtain a refined aluminum chloride solution; d) concentrating and crystallizing the refined aluminum chloride solution to obtain an aluminum chloride crystal; and e) calcining the aluminum chloride crystal to obtain the metallurgical-grade alumina. The method is simple, the procedure is easy to be controlled, the extraction efficiency of alumina is high, the production coast is low, and the product quality is steady.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 29, 2013
    Assignee: China Shenhua Energy Company Limited
    Inventors: Zhaohua Guo, Cundi Wei, Peiping Zhang, Jianguo Han, Junzhou Chi, Yanbin Sun, Yixin Zhao
  • Publication number: 20130233130
    Abstract: There is provided a method for extracting aluminum ions from argillite. The process comprises leaching the argillite with an acid such as HCl so as to obtain a composition comprising the aluminum ions and iron ions; at least partially removing the iron ions from the composition by substantially selectively precipitating the iron ions by adding a base and at least partially removing the precipitated iron ions so as to obtain an Al-rich composition; and optionally purifying the Al-rich composition by adding a base for substantially selectively precipitating the aluminum ions, by means of a hollow fiber membrane, or by a liquid-liquid extraction.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 12, 2013
    Inventors: Richard Boudreault, Serge Alex, Fabienne Biasotto, Joël Fournier
  • Patent number: 8343446
    Abstract: 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: Grant
    Filed: October 13, 2011
    Date of Patent: January 1, 2013
    Assignee: The University of Montana
    Inventors: Edward Rosenberg, Paul Miranda, Yuen Onn Wong
  • Patent number: 8337789
    Abstract: There are provided processes for extracting aluminum ions from aluminous ores and for preparing alumina. Such processes can be used with various types of aluminous ores such as aluminous ores comprising various types of metals such as Fe, K, Mg, Na, Ca, Mn, Ba, Zn, Li, Sr, V, Ni, Cr, Pb, Cu, Co, Sb, As, B, Sn, Be, Mo, or mixtures thereof.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: December 25, 2012
    Assignee: Orsite Aluminae Inc.
    Inventors: Richard Boudreault, Serge Alex, Fabienne Biasotto
  • Patent number: 8241594
    Abstract: There are provided processes for extracting aluminum ions from aluminous ores. Such processes can be used with various types of aluminous ores such as aluminous ores comprising various types of metals such as Fe, K, Mg, Na, Ca, Mn, Ba, Zn, Li, Sr, V, Ni, Cr, Pb, Cu, Co, Sb, As, B, Sn, Be, Mo, or mixtures thereof.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: August 14, 2012
    Assignee: Orbite Aluminae Inc.
    Inventors: Richard Boudreault, Serge Alex, Fabienne Biasotto
  • Publication number: 20110274597
    Abstract: The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium bicarbonate is used as an acidity balancing agent, in order to adjust the balancing pH value of the extraction separation process which uses an acidic organic extractant, improve the extraction capacity of organic phase, and increase the concentration of metal ions in the loaded organic phase.
    Type: Application
    Filed: January 14, 2010
    Publication date: November 10, 2011
    Inventors: Xiaowei Huang, Zhiqi Long, Xinlin Peng, Hongwei Li, Guilin Yang, Dali Cui, Chunmei Wang, Na Zhao, Liangshi Wang, Ying Yu
  • Patent number: 8012337
    Abstract: Proposed is a method for collecting valuable metal from an ITO scrap by subjecting the ITO scrap to electrolysis and collecting the result as metallic indium. Specifically, the present invention proposes a method for selectively collecting metallic indium including the steps of subjecting the ITO scrap to electrolysis in an electrolytic bath partitioned with a diaphragm or an ion-exchange membrane, subsequently extracting anolyte temporarily, eliminating tin contained in the anolyte by a neutralization method, a replacement method or other methods, placing a solution from which the tin was eliminated in a cathode side again and performing electrolysis thereto; or a method for collecting valuable metal from an ITO scrap including the steps of obtaining a solution of In or Sn in an ITO electrolytic bath, eliminating the Sn in the solution, and collecting In in the collecting bath.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: September 6, 2011
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Yuichiro Shindo, Kouichi Takemoto
  • Patent number: 8007759
    Abstract: A static ion-exchange process for the preparation of a polynuclear Al species comprising the treatment of an aqueous aluminum chloride solution with a hydroxide-form ion-exchange resin at a temperature of from 5° C. to 60° C. for a period of at least 30 minutes.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: August 30, 2011
    Assignee: Conopco Inc.
    Inventors: Olivier Deschaume, Carole Celia Perry, Kirill Shafran
  • Publication number: 20110044869
    Abstract: There are provided processes for extracting aluminum ions from aluminous ores. Such processes can be used with various types of aluminous ores such as aluminous ores comprising various types of metals such as Fe, K, Mg, Na, Ca, Mn, Ba, Zn, Li, Sr, V, Ni, Cr, Pb, Cu, Co, Sb, As, B, Sn, Be, Mo, or mixtures thereof.
    Type: Application
    Filed: October 7, 2010
    Publication date: February 24, 2011
    Inventors: Richard BOUDREAULT, Serge ALEX, Fabienne BIASOTTO
  • Patent number: 7837961
    Abstract: There are provided processes for extracting aluminum ions from aluminous ores. Such processes can be used with various types of aluminous ores such as aluminous ores comprising various types of metals such as Fe, K, Mg, Na, Ca, Mn, Ba, Zn, Li, Sr, V, Ni, Cr, Pb, Cu, Co, Sb, As, B, Sn, Be, Mo, or mixtures thereof.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: November 23, 2010
    Assignee: Exploration Orbite VSPA Inc.
    Inventors: Richard Boudreault, Serge Alex, Fabienne Sotto
  • Publication number: 20100226839
    Abstract: The present invention provides a novel process for the removal and recovery of gallium from a feed solution containing the gallium and copper. The process of the present invention utilizes a combination of a supported liquid membrane (SLM) and a strip dispersion to improve extraction of gallium while increasing membrane stability and decreasing processing costs. This novel process selectively removes gallium from feed solution containing the gallium and copper.
    Type: Application
    Filed: November 3, 2009
    Publication date: September 9, 2010
    Applicant: SOLAR APPLIED MATERIALS TECHNOLOGY CORP.
    Inventors: Jian-Jou LIAN, Chung-Ching LEE, I-Wen HUANG, Hai-Jui CHEN
  • Publication number: 20100150799
    Abstract: There are provided processes for extracting aluminum ions from aluminous ores. Such processes can be used with various types of aluminous ores such as aluminous ores comprising various types of metals such as Fe, K, Mg, Na, Ca, Mn, Ba, Zn, Li, Sr, V, Ni, Cr, Pb, Cu, Co, Sb, As, B, Sn, Be, Mo, or mixtures thereof.
    Type: Application
    Filed: May 7, 2008
    Publication date: June 17, 2010
    Inventors: Richard Boudreault, Serge Alex, Fabienne Sotto
  • Patent number: 7736547
    Abstract: A method of producing a proton conducting material, comprising adding a pyrophosphate salt to a solvent to produce a dissolved pyrophosphate salt; adding an inorganic acid salt to a solvent to produce a dissolved inorganic acid salt; adding the dissolved inorganic acid salt to the dissolved pyrophosphate salt to produce a mixture; substantially evaporating the solvent from the mixture to produce a precipitate; and calcining the precipitate at a temperature of from about 400° C. to about 1200° C.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: June 15, 2010
    Assignee: Los Alamos National Security, LLC
    Inventors: Fernando Henry Garzon, Melinda Lou Einsla, Rangachary Mukundan
  • Patent number: 7553474
    Abstract: It is an object to provide a method for producing stable alkaline metal oxide sols having a uniform particle size distribution. The method comprises the steps of: heating a metal compound at a temperature of 60° C. to 110° C. in an aqueous medium that contains a carbonate of quaternary ammonium; and carrying out hydrothermal processing at a temperature of 110° C. to 250° C. The carbonate of quaternary ammonium is (NR4)2CO3 or NR4HCO3 in which R represents a hydrocarbon group, or a mixture thereof. The metal compound is one, or two or more metal compounds selected from a group of compounds based on a metal having a valence that is bivalent, trivalent, or tetravalent.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: June 30, 2009
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Yutaka Ohmori, Hirokazu Kato, Yoshinari Koyama, Kenji Yamaguchi
  • Patent number: 7494630
    Abstract: A new method to strip metals from organic solvents in a manner that allows for the recycle of the stripping agent. The method utilizes carbonate solutions of organic amines with complexants, in low concentrations, to strip metals from organic solvents. The method allows for the distillation and reuse of organic amines. The concentrated metal/complexant fraction from distillation is more amenable to immobilization than solutions resulting from current practice.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: February 24, 2009
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Terry A. Todd, Jack D. Law, R. Scott Herbst, Valeriy N. Romanovskiy, Igor V. Smirnov, Vasily A. Babain, Vyatcheslav M. Esimantovski
  • Publication number: 20080107577
    Abstract: A method for treating an oil shale formation comprising dawsonite includes assessing a dawsonite composition of one or more zones in the formation. Heat from one or more heaters is provided to the formation such that different amounts of heat are provided to zones with different dawsonite compositions. The provided heat is allowed to transfer from the heaters to the formation. Fluids are produced from the formation.
    Type: Application
    Filed: October 20, 2006
    Publication date: May 8, 2008
    Inventors: Harold J. Vinegar, Xueying Xie, David Scott Miller
  • Patent number: 7338589
    Abstract: The present invention relates to a process for the recovery of gallium from Bayer process liquors. Bayer process liquor is obtained from alumina industries and contains 450 g/L Na2O, 80 g/L Al2O3 and 190±20 ppm of gallium. The present invention utilizes an organic and inorganic phase for a two stage separation process to recover gallium with high purity.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: March 4, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Patcha Ramachandra Rao, Puvvada George Vijay Kumar, Archana Agrawal, Indranil Chattoraj
  • Patent number: 7288184
    Abstract: Disclosed is a process for removing acids in a system in which aromatic hydrocarbons are separated from a mixture with aliphatic hydrocarbons. The aromatic hydrocarbons are extracted from the mixture using an extracting solvent. The aromatic hydrocarbons are stripped from the extracting solvent with steam and the steam is condensed to form water which is separated from the aromatic hydrocarbons. The separated water is passed through a basic anion exchange column and is then heated to produce the steam.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: October 30, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Marcus Lambertus Hendricus van Nuland, John Joseph Monson
  • Patent number: 6846470
    Abstract: A method for producing an indium-containing aqueous solution having a reduced amount of metal impurities is provided. A method for producing an indium-containing aqueous solution having a reduced amount of metal impurities which comprises bringing an aqueous solution containing indium and metal impurities whose hydrogen ion concentration is adjusted at 0.5 mol/L to 3 mol/L into contact with a non-chelate ion-exchange resin to remove the metal impurities, and a method for producing an indium-containing aqueous solution having a reduced amount of metal impurities which comprises bringing an aqueous solution containing indium and metal impurities into contact with a chelate ion-exchange resin to remove the metal impurities are provided.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: January 25, 2005
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takeshi Hattori, Shinji Fujiwara, Kunio Saegusa
  • Patent number: 6838004
    Abstract: A nanoporous reactive adsorbent incorporates a relatively small number of relatively larger reactant, e.g., metal, enzyme, etc., particles (10) forming a discontinuous or continuous phase interspersed among and surrounded by a continuous phase of smaller adsorbent particles (12) and connected interstitial pores (14) therebetween. The reactive adsorbent can effectively remove inorganic or organic impurities in a liquid by causing the liquid to flow through the adsorbent. For example, silver ions may be adsorbed by the adsorbent particles (12) and reduced to metallic silver by reducing metal, such as ions, as the reactant particles (10). The column can be regenerated by backwashing with the liquid effluent containing, for example, acetic acid.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: January 4, 2005
    Assignee: Industrial Science & Technology Network, Inc.
    Inventors: Arthur Jing-Min Yang, Yuehua Zhang
  • Patent number: 6673969
    Abstract: A new oxime mixture used as an extractant for metals, prepared from natural products containing alkylated phenols such as cashew nut shell liquid using mild reaction conditions, is expressed by the formula: The oxime mixture is suitable for extracting gallium from waste effluents from ore processing, such as Bayer liquor.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: January 6, 2004
    Assignee: Comselho Nacional de Desenvolvimento Cientifico e Tecnologico CNPQ
    Inventors: Peter R. Seidl, Ángelo Da Cunha Pinto, Arthur R. Menzel, Roberto O. Portela Couto
  • Publication number: 20010031233
    Abstract: Compositions and methods for selectively binding metal ions from a source solution comprise using a polyhydroxypyridinone-containing ligand covalently bonded to a particulate solid support through a hydrophilic spacer of the formula SS-A-X-L (HOPO)n where SS is a particulate solid support such as silica or a polymeric bead, A is a covalent linkage mechanism, X is a hydrophilic spacer grouping, L is a ligand carrier, HOPO is a hydroxypyridinone appropriately spaced on the ligand carrier to provide a minimum of six functional coordination metal binding sites, and n is an integer of 3 to 6 with the proviso that when SS is a particulate organic polymer, A-X may be combined as a single covalent linkage.
    Type: Application
    Filed: April 6, 2001
    Publication date: October 18, 2001
    Inventors: Ronald L. Bruening, Krzysztof E. Krakowiak
  • Patent number: 6267936
    Abstract: Solvent extraction of one or more metal ions from an aqueous solution in the presence of hydrocarbon-soluble aminomethylenephosphonic acid derivatives.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: July 31, 2001
    Assignees: BASF Aktiengesellschaft, Instituto National de Engenharia e Tecnologia
    Inventors: Francisco Delmas, Carlos Nogueira, Michael Ehle, Knut Oppenländer
  • Patent number: 6241893
    Abstract: An amorphous potassium aluminosilicate filtration media which may be mixed with activated carbon filters water to remove oxygen, chlorines, hardness, alkalinity, ammonia, hydrogen, hydrogen sulfide, sodium sulfite and other contaminants. The particular sodium aluminosilicate is a porous amorphous material formed under ultraviolet light or sunlight to produce pore sizes of 60 Å to 250 Å at ambient temperatures (20° C.-35° C.) and low relative humidity (5%-20%). The media is initially formed as a microporous primarily amorphous gel containing Na2O, Al2O3, SiO2 and H2O. The sodium therein is displaced by potassium, whereby the filter removes impurities from water without introducing sodium. The potassium aluminosilicate may be a second stage filter to a first stage filter composed of a strong base anion media charged with potassium carbonate and/or bicarbonate.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: June 5, 2001
    Inventor: Ehud Levy
  • Patent number: 6217622
    Abstract: A method of forming and classifying a precipitate containing large, coarse and fine particles from a super-saturated precipitating mother slurry, e.g. sodium aluminate from the Bayer process. The method comprises separating the precipitating mother slurry into a plurality of separate streams, introducing each stream into a vessel provided with an agitated lower zone and a quiescent upper zone to form the precipitate, with the large and coarse particles remaining as a slurry in the agitated lower zone and the fine particles migrating to the quiescent zone, removing product slurry from the lower agitated zone, and removing spent liquor containing the fine particles from the quiescent upper zone. The invention also provides apparatus for carrying out the method. The combined precipitation and partial classification (separation of fine particles) makes it possible to deal with high solids charges increasingly encountered in industrial processes.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: April 17, 2001
    Assignee: Alcan International Limited
    Inventor: Bryan Hiscox
  • Patent number: 5917069
    Abstract: An adsorbent is described based on an inorganic support material with exchangeable mono- and divalent cations, characterized by the fact that the specific surface of the support material is >100 m.sup.2 /g, its cation exchange capacity is>30 mg-equiv/100 g, its pore volume is>0.15 m/g, the pH value of an aqueous suspension of 8 g of support material in 100 mL of H.sub.2 O is<7.5 and that at least 60, preferably at least 70% of the exchangeable mono- and/or divalent cations are exchanged by cations acting as Lewis acids, preferably Al.sup.3 + cations.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: June 29, 1999
    Assignee: Sud-Chemie AG
    Inventors: Wolfgang Buckl, Hermann Ebert, Helmut Eicke, Norbert Schall, Werner Zschau, Reinhard Hahn
  • Patent number: 5840113
    Abstract: An improved finely divided rubber-reinforcing clay mineral composition can be produced by employing a hydrous kaolin clay surface treated with a functional silane, a methylene donor compound such as hexamethylenetetramine, and a multifunctional methylene acceptor such as resorcinol. A novel process of preparation is provided. The improved reinforcing, treated clay filler can be combined with natural or synthetic elastomer compositions which can be cured to elastomer products which have improved physical properties, such as modulus, tensile, tear, wear resistance and/or resistance to heat build-up.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: November 24, 1998
    Assignee: J.M. Huber Corporation
    Inventors: Gary M. Freeman, Carl J. Marshall, Jr., Walter O. Lackey, Thomas J. Lynch
  • Patent number: 5758255
    Abstract: A method of reducing the entrainment of aqueous mineral acid solutions in organic extractants used in the solvent extraction of metals from the aqueous fluid is disclosed. The method comprises adding an effective, entrainment prevention amount of a water soluble cationic polymer having a molecular weight of from about 10,000 to about 500,000 to a metal rich aqueous mineral acid solution, immediately prior to, or during mixing with a metal poor organic extractant, and then recovering a metal poor aqueous mineral acid phase, and a metal rich organic extractant phase having a reduced level of entrainment of the aqueous mineral acid solution. In a preferred embodiment the metal is copper, and the polymer is poly(diallyldimethylammonium) chloride.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: May 26, 1998
    Assignee: Nalco Chemical Company
    Inventors: E. Michael Kerr, Kenneth M. Smith, II
  • Patent number: 5750032
    Abstract: Process for removing an alkali metal compound from an acid solution also containing nickel and aluminum compounds, which requires contacting the acid solution first with an ion exchange resin functional to remove the nickel and aluminum compounds from the acid solution; and then contacting the acid solution with an ion exchange resin which is more selective to remove the alkali metal compound from the acid solution.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: May 12, 1998
    Assignee: Shell Oil Company
    Inventors: Zaida Diaz, John David Wilkey
  • Patent number: RE36118
    Abstract: A method for the recovery of a metal from an organic complex thereof, said method comprising treating the complex with a weakly acid aqueous solution of an alkali metal or alkaline earth metal chloride having a chloride content of at least 4 molar whereby said complex is decomposed and metal ions are transferred to the aqueous solution.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: March 2, 1999
    Assignee: Zeneca Limited
    Inventors: Domenico C. Cupertino, Peter A. Tasker
  • Patent number: RE36990
    Abstract: A method for the recovery of a metal from an organic complex thereof, said method comprising treating the complex with a weakly acid aqueous solution of an alkali metal, an alkaline earth metal or ammonium chloride having a chloride content of at least 4 molar whereby said complex is decomposed and metal ions are transferred to the aqueous solution.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: December 19, 2000
    Assignee: Zeneca Limited
    Inventors: Domenico C. Cupertino, Peter A. Tasker