Leacher, Dissolver Or Extractor Patents (Class 204/233)
  • Patent number: 10287388
    Abstract: An amine of the formula (I) and a process for its preparation by reductive alkylation of 1,2-propylenediamine with a di- or trifunctional carbonyl compound and hydrogen. The amine of the formula (I) is low in viscosity and in odour, high in reactivity towards epoxides and outstanding in its compatibility with other amines and with epoxy resins. The amine of the formula (I) allows access to low-emission epoxy resin compositions which have good processing qualities, cure rapidly even at low temperatures and form high-quality, high-hardness plastics having an attractive surface.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: May 14, 2019
    Assignee: SIKA TECHNOLOGY AGH
    Inventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
  • Patent number: 10138146
    Abstract: A brine filtration device disposable at a bottom portion of a brine storage tank has inner and outer tubes having a plurality of fine slits in order to mechanically trap any large undissolved salt crystals that may be entrained within a sodium chloride solution. A plurality of beads are disposed between the inner and outer tubes to cause the sodium chloride solution to change direction (i.e., cause turbulence) which further promotes or facilitates dissolution of any undissolved salt crystals entrained within the sodium chloride solution. The sodium chloride solution continues to flow through the slits of the inner tube which further traps or catches any undissolved salt crystals. Additional changes in flow direction of the sodium chloride solution are also contemplated to further increase or facilitate dissolution of undissolved salt crystals entrained in the sodium chloride solution.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 27, 2018
    Inventor: Mark Malmquist
  • Patent number: 9630858
    Abstract: A method for treating ballast water to achieve IMO standards for ballast water includes a reactor fabricated of copper nickel for receiving and discharging ballast water, a UV source for irradiating the water in the presence of copper nickel thereby to generate free radicals for biocidal and bactericidal effects on organisms and microbes entering the reactor with ballast water.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: April 25, 2017
    Inventors: Halvor Nilsen, Birgir Nilsen
  • Patent number: 9620770
    Abstract: Disclosed is a nickel positive electrode for a fiber battery having a long life duration, and also being enabling a high output and high capacity to be attained. For this purpose, the nickel positive electrode for a fiber battery is obtained by coating a carbon fiber with nickel, then causing a cathodic polarization in a nickel nitrate bath using the nickel-coated carbon fiber as a cathode, and then immersing the precipitate, which was deposited on the surface of the carbon fiber by the cathodic polarization, in an aqueous caustic alkali solution.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: April 11, 2017
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tomoaki Takasaki, Tetsuo Sakai, Takashi Mukai, Tsutomu Iwaki, Kazuo Tsutsumi, Kazuya Nishimura
  • Patent number: 9611151
    Abstract: The disclosure provides an electrolyte supplement system in an aluminum electrolysis process, which includes low-molecular-ratio cryolite, wherein the low-molecular-ratio cryolite is selected from mKF.AlF3, nNaF.AlF3 or mixture thereof, where m=1˜1.5 and n=1˜1.5. When the electrolyte supplement system provided by the disclosure is applied to the aluminum electrolytic industry, electrolytic temperature can be reduced obviously in the aluminum electrolysis process without changing the existing electrolytic process; thus, power consumption is reduced, volatilization loss of fluoride is reduced and the comprehensive cost of production is reduced.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: April 4, 2017
    Assignee: SHENZHEN SUNXING LIGHT ALLOYS MATERIALS CO., LTD.
    Inventors: Xuemin Chen, Jun Yang, Zhihong Li, Weiping Wu
  • Patent number: 8986519
    Abstract: An electrowinning apparatus and method are provided. The electrowinning apparatus includes: an electrolytic cell including a body portion which has an inlet for introducing an aqueous solution containing metal ions into the body portion and a conical portion which is gradually reduced in diameter from top to bottom and disposed under the body portion; a ring-shaped cathode coupled to an inner circumferential surface of the body portion of the electrolytic cell and having an entrance hole which extends from an outer circumferential surface of the cathode through to an inner circumferential surface of the cathode and is connected to the inlet of the electrolytic cell; and a hollow anode having an upper end disposed outside the electrolytic cell and inserted into the cathode. In the electrowinning method, a metal can be recovered from an aqueous solution containing a low concentration of metal ions using the above cyclone-shaped electrowinning apparatus.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: March 24, 2015
    Assignee: Korea Institute of Geoscience and Mineral Resources (KIGAM)
    Inventors: Soo-Kyung Kim, Jae-Chun Lee, Jin-Ki Jeong, Jeong-Soo Sohn, Young Min Oh
  • Publication number: 20140332393
    Abstract: An Sn alloy plating apparatus is disclosed. The apparatus includes a plating bath configured to store an Sn alloy plating solution therein with an insoluble anode and a substrate immersed in the Sn alloy plating solution, an Sn dissolving having an anion exchange membrane therein which isolates an anode chamber, in which an Sn anode is disposed, and a cathode chamber, in which a cathode is disposed, from each other, a pure water supply structure configured to supply pure water to the anode chamber and the cathode chamber, a methanesulfonic acid solution supply structure configured to supply a methanesulfonic acid solution, containing a methanesulfonic acid, to the anode chamber and the cathode chamber, and an Sn replenisher supply structure configured to supply an Sn replenisher, produced in the anode chamber and containing Sn ions and a methanesulfonic acid, to the plating bath.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 13, 2014
    Applicant: EBARA CORPORATION
    Inventors: Masashi SHIMOYAMA, Yuji ARAKI, Masamichi TAMURA, Toshiki MIYAKAWA
  • Publication number: 20140197038
    Abstract: An electroplating solution includes an aqueous electrolyte solution including water soluble copper salts, sulfide ions and chloride ions, an accelerator including an organic material having sulfur (S), the accelerator accelerating copper (Cu) reduction, a suppressor including a polyether compound, the suppressor selectively suppressing the copper reduction, and a leveler including a water soluble polymer having nitrogen that is dissolved into positive ions in the aqueous electrolyte solution.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 17, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-Beom PARK, Yun-Deok KANG, Ki-Hyeon KIM, Youn-Joung CHO, Jung-Sik CHOI
  • Publication number: 20140021059
    Abstract: Methods and systems for electrochemical production of formic acid are disclosed. A method may include, but is not limited to, steps (A) to (D). Step (A) may introduce water to a first compartment of an electrochemical cell. The first compartment may include an anode. Step (B) may introduce carbon dioxide to a second compartment of the electrochemical cell. The second compartment may include a solution of an electrolyte and a cathode. The cathode is selected from the group consisting of indium, lead, tin, cadmium, and bismuth. The second compartment may include a pH of between approximately 4 and 7. Step (C) may apply an electrical potential between the anode and the cathode in the electrochemical cell sufficient to reduce the carbon dioxide to formic acid. Step (D) may maintain a concentration of formic acid in the second compartment at or below approximately 500 ppm.
    Type: Application
    Filed: August 1, 2013
    Publication date: January 23, 2014
    Applicant: Liquid Light, Inc.
    Inventors: Narayanappa Sivasankar, Ian Sullivan, Emily Barton Cole, Kyle Teamey, Kunttal Keyshar
  • Patent number: 8603344
    Abstract: The present invention has an object to provide a method and an apparatus for removing metals in waste water, such as thallium contained in waste water generated by rinsing waste containing chlorine, ash obtained by burning garbage, fly ash, etc. and reduces the concentration of metals in the waste water to a discharge standard, and the present invention provides a method for removing metals comprising applying direct-current electricity by an electrolyzer 5 to waste water S5, which contains metal aggregate, discharged via a reaction tank 1, a settler 2, and a reaction tank 4, and thereby the waste water S5 is electrolyzed together with depositing metals dissolve in the waste water S5 as metal oxides, separating the waste water containing deposited metal oxides in a precision filtration apparatus 6 into suspended solid MP and waste water S7, and removing a small amount of metals dissolve in the waste water S7 after removing the suspended solid MP in an ion exchange unit 7.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: December 10, 2013
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventor: Masayoshi Konishi
  • Publication number: 20130220831
    Abstract: The invention refers to an air supply system (1) for a group of cells (4) arranged for dosing the individual air demand of each electrolytic cell (2) that must be fed to its electrolyte through a system of controlled air diffusion. It comprises a low pressure blower (5), a central feed pipe (6) and a plurality of feed branches (7); a flow meter (8) and a flow regulator (9) are associated to each feed branch. The assembly is connected to a bent hose (12) arranged on the walls of said electrolytic cell (2) to allow connection with an isobaric ring (3), so that the fed air can be diffused homogeneously and sustainedly in time to the electrolyte through selectively perforated hoses (16). The present invention also refers to the process of installation, calibration and operation of the air supply system.
    Type: Application
    Filed: March 17, 2010
    Publication date: August 29, 2013
    Applicant: ANCOR TECMIN, S.A.
    Inventors: Victor Vidaurre Heiremans, Edgardo Beltran Navarro, Victor Manuel Vidaurre Miller
  • Patent number: 8512541
    Abstract: An electrolytic cell for replenishing chromium content of a trivalent chromium electrolyte and a method of replenishing trivalent chromium content using the electrolytic cell is provided. The method comprising the steps of immersing a chromium electrode and a second electrode in a trivalent chromium electrolyte and applying an alternating pulse current across the chromium electrode and the second electrode. In this manner, trivalent chromium is electrolytically dissolved from the chromium electrode and the trivalent chromium content of the electrolyte in which the chromium electrode is immersed is enriched.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: August 20, 2013
    Inventor: Trevor Pearson
  • Patent number: 8512544
    Abstract: The method of the present invention includes a step (i) in which a voltage is applied between first and second electrodes 21 and 22 so that the first electrode serves as a cathode, with the first and second electrodes 21 and 22 being placed in contact with a material that allows ions to move therethrough. The material includes an adsorbent (gel 11) containing a macromolecule that has adsorbed a metal ion. The macromolecule contains the same constitutional units as those contained in a macromolecule extracted from Aphanothece sacrum. The first electrode 21 is placed in contact with the adsorbent in step (i). The metal is deposited on a surface of the first electrode 21 by applying the voltage in step (i).
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: August 20, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Tatsuo Kaneko, Maiko Kaneko, Hiroshi Kawazoe
  • Publication number: 20130206588
    Abstract: The present disclosure relates to a process and system for recovery of one or more metal values using solution extraction techniques and to a system for metal value recovery. In an exemplary embodiment, the solution extraction system comprises a first solution extraction circuit and a second solution extraction circuit. A first metal-bearing solution is provided to the first and second circuit, and a second metal-bearing solution is provided to the first circuit. The first circuit produces a first rich electrolyte solution, which can be forwarded to primary metal value recovery, and a low-grade raffinate, which is forwarded to secondary metal value recovery. The second circuit produces a second rich electrolyte solution, which is also forwarded to primary metal value recovery. The first and second solution extraction circuits have independent organic phases and each circuit can operate independently of the other circuit.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 15, 2013
    Applicant: FREEPORT-MCMORAN CORPORATION
    Inventor: FREEPORT-MCMORAN CORPORATION
  • Publication number: 20130126338
    Abstract: An electrolyte electrolyzer adapted to create hydrogen and oxygen from electrolyte fluid at or near atmospheric pressure. The electrolyzer is comprised in a preferred form of a plurality of cells which collectively create oxygen and hydrogen chambers separated by an ion permeable membrane. The electrolyzer is further defined by a passive electrode that is electrically interposed between a charged anode and cathode. The chambers defined by the cells are in communication with oxygen and hydrogen supply lines to transfer the hydrogen gas from the unit.
    Type: Application
    Filed: November 27, 2012
    Publication date: May 23, 2013
    Applicant: WOOD STONE CORPORATION
    Inventor: Wood Stone Corporation
  • Publication number: 20130095649
    Abstract: Ions depleted from a chemical bath by a reaction such as plating are continually replenished by production and moving of ions through selectively permeable membranes while isolating potential contaminant ions from the chemical bath.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tien-Jen Cheng, John Anthony Fitzsimmons, David E. Speed, Keith Kwong Hon Wong
  • Publication number: 20130048506
    Abstract: An electrolytic cell system to convert carbon dioxide to a hydrocarbon that includes a first electrode including a substrate having a metal porous dendritic structure applied thereon; a second electrode, and an electrical input adapted for coupling to a source of electricity, for applying a voltage across the first electrode and the second electrode.
    Type: Application
    Filed: October 24, 2012
    Publication date: February 28, 2013
    Applicant: The Trustees of Columbia University in the City of New York
    Inventor: The Trustees of Columbia University in the City of
  • Publication number: 20120118749
    Abstract: An electrolytic cell for replenishing chromium content of a trivalent chromium. electrolyte and a method of replenishing trivalent chromium content using the electrolytic cell is provided. The method comprising the steps of immersing a chromium electrode and a second electrode in a trivalent chromium electrolyte and applying an alternating pulse current across the chromium electrode and the second electrode. In this manner, trivalent chromium is electrolytically dissolved from the chromium electrode and the trivalent chromium content of the electrolyte in which the chromium electrode is immersed is enriched.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 17, 2012
    Inventor: Trevor Pearson
  • Patent number: 8157972
    Abstract: An electrolytic water treatment system improving upon the electrode life of electrolytic oxygen generators by reducing mineral precipitation and fouling that typically occurs in water treatment systems. The electrolytic water treatment system can include a softened water bypass stream into which a flow-through electrolytic element can be positioned. By eliminating exposure of the electrolytic element to hard water, scale formation on electrodes can be significantly reduced such that polarity reversal cycles of the electrolytic element decrease in frequency.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: April 17, 2012
    Assignee: Oxygenator Water Technologies, Inc.
    Inventors: Rudolph R. Hegel, Karl J. Fritze
  • Publication number: 20120085643
    Abstract: In one embodiment of the present invention an electrolytic cell is provided comprising a containment vessel; a first electrode; a second electrode; a source of electrical current in electrical communication with the first electrode and the second electrode; an electrolyte in fluid communication with the first electrode and the second electrode; a gas, wherein the gas is formed during electrolysis at or near the first electrode; and a separator; wherein the separator includes an inclined surface to direct flow of the electrolyte and the gas due to a difference between density of the electrolyte and the combined density of the electrolyte and the gas such that the gas substantially flows in a direction distal to the second electrode.
    Type: Application
    Filed: December 9, 2011
    Publication date: April 12, 2012
    Applicant: McAlister Technologies, LLC
    Inventor: Roy E. McAlister
  • Publication number: 20120006690
    Abstract: The present invention provides a process for preparing lithium alloy or lithium metal from lithium carbonate or its equivalent lithium ion source such as spudomene ore without creating toxic byproducts such as halogen gases and a system adopted for such a process.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 12, 2012
    Inventors: Steven C. Amendola, Lawrence Swonger, Stefanie Goldman
  • Patent number: 8012318
    Abstract: A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent/solution extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution in multiple electrowinning stages, without subjecting the copper-containing solution to solvent/solution extraction prior to electrowinning.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: September 6, 2011
    Assignee: Freeport-McMoran Corporation
    Inventors: John O Marsden, Robert E Brewer, Susan R Brewer, Joanna M Robertson, David R Baughman, Philip Thompson, Wayne W Hazen, Christel M. A. Bemelmans
  • Publication number: 20110147212
    Abstract: A capacitive deionization device includes; at least one flow path configured to receive influent fluid, at least one pair of electrodes, at least one charge barrier disposed between the at least one flow path and a corresponding electrode of the at least one pair of electrodes, at least one electrolyte solution disposed between at least one of the at least one pair of electrodes and a corresponding charge barrier of the at least one charge barrier, and at least one electrolyte compensation device in fluid communication with the at least one electrolyte solution, wherein the at least one electrolyte solution differs from the influent fluid.
    Type: Application
    Filed: August 13, 2010
    Publication date: June 23, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-hyun KIM, Hyo-rang KANG, Ho-jung YANG, Hyun-seok KIM
  • Publication number: 20110108414
    Abstract: A multi-element cover system for controlling acid mist in metal electrowinning or electrorefining cells is made of an electrolyte resistant material and is applied above the surface of the electrolyte and below the electrical connections of the electrodes in order to provide a continuous and substantially airtight seal above the electrolyte.
    Type: Application
    Filed: August 21, 2008
    Publication date: May 12, 2011
    Inventors: Fernando Penna Wittig, Cristian Villaseca Castro
  • Patent number: 7931795
    Abstract: The present invention relates to a novel economical on-site electrochemical based membrane cell based process with the capability of producing high strength sodium hypochlorite and/or elemental chlorine gas in any ratio as required by the needs of a water or wastewater treatment plant. The system is compact and modular, using membrane cell based electrolyzers and utilizing novel process modifications and sensors to allow for the unattended control and safe operation of the process. The process allows the operator to produce elemental chlorine gas and sodium hypochlorite in any product ratio, such that 5% to 100% of the total chlorine produced by the process can be converted to high strength bleach. The process has the flexibility to produce stable high quality, low to high strength sodium hypochlorite solutions in concentrations ranging from about 2 to 15% trade as NaOCl.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 26, 2011
    Assignee: Electrolytic Technologies Corp.
    Inventors: Jerry J. Kaczur, Derek B. Lubie, Edmund M. Cudworth, Charles W. Clements, Martin E. Nelson
  • Publication number: 20110062032
    Abstract: An electrolytic method for extracting components from subsurface strata including providing a carrier fluid; providing a pair of electrodes within a container, the container having a first outlet located proximal to a first electrode of the pair of electrodes and a second outlet located proximal to a second electrode of the pair of electrodes; flowing the carrier fluid through the container; applying a potential to the pair of electrodes to produce a first ionized carrier fluid and a second ionized carrier fluid in the container; removing the first ionized carrier fluid from the container through their respective outlets; injecting one of the first ionized carrier fluid and the second ionized carrier fluid into the subsurface strata to release the components; and recovering one of the first ionized carrier fluid and second ionized carrier fluid and components from the subsurface strata.
    Type: Application
    Filed: November 19, 2010
    Publication date: March 17, 2011
    Applicant: Strategic Resource Optimization, Inc.
    Inventors: Michael J. Peters, David D. Faulder
  • Publication number: 20100288649
    Abstract: A process and apparatus are provided that allow metals including metals having stable oxide phases and metals with variable valencies to be extracted from their respective ores via an electrolytic process that is environmentally sound and economically viable. The process for lowering the oxidation state of a metal in a metal oxide comprises providing an electrolysis chamber housing a flux containing a highly reactive metal (e.g. Mg) and having a cathode, an anode, and a solid oxide membrane. A reducing chamber housing the metal oxide having a higher oxidation state to be reduced is provided. A solid oxide membrane (SOM) process is used to generate vapor of the highly reactive metal in the electrolysis chamber. The vapor of the highly reactive metal is directed to the reducing chamber, where the vapor of the highly reactive metal reacts with the metal oxide to be reduced to provide a metal or metal oxide having a lowest oxidation state and an oxide of the highly reactive metal (e.g. MgO).
    Type: Application
    Filed: October 11, 2007
    Publication date: November 18, 2010
    Inventor: Uday B. Pal
  • Patent number: 7799198
    Abstract: A chlorine dioxide solution generator includes a chlorine dioxide gas source and an absorption loop for effecting the dissolution of chlorine dioxide into a liquid stream. A gas transfer assembly is interposed between the chlorine dioxide gas source and the absorption loop. The gas transfer assembly includes a gas transfer pump and an exhaust manifold assembly. The exhaust manifold assembly includes a manifold conduit defining an interior volume for directing the pressurized chlorine dioxide gas stream from the pump outlet to the absorption loop. The manifold conduit interior volume is sufficiently large to inhibit chlorine dioxide decomposition in the pressurized chlorine dioxide gas stream by induce a pressurized chlorine dioxide gas stream temperature within the manifold conduit of less than about 163° F. (73° C.).
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: September 21, 2010
    Assignee: Pureline Treatment Systems, LLC
    Inventors: Chenniah Nanjundiah, Larry L. Hawn, Jeffrey M. Dotson
  • Patent number: 7754057
    Abstract: A chlorine dioxide solution generator, which injects a chlorine dioxide solution into a pressurized fluid system, including an absorption loop for effecting the dissolution of chlorine dioxide into a liquid stream. The chlorine dioxide gas source can include an anolyte loop and a catholyte loop. The generator avoids or eliminates the introduction of air or other gases that can cause corrosion in the process distribution system.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: July 13, 2010
    Assignee: Pureline Treatment Systems, LLC
    Inventors: Timothy J. O'Leary, Jerry J. Kaczur, Chenniah Nanjundiah
  • Publication number: 20100116686
    Abstract: Electrocoagulation effluent treatment apparatus and methods are disclosed, the apparatus including a primary electrocoagulation reactor chamber having treatment electrodes maintained therein and an effluent inlet and treated effluent outlet. An integrated flotation chamber is located above the reaction chamber, a vacuum device connectable with a vacuum source being received in the flotation chamber and including a foam intake and an output. A sludge chamber is defined below and integrated with the primary reaction chamber and has a settled sludge output.
    Type: Application
    Filed: July 31, 2008
    Publication date: May 13, 2010
    Inventors: Reginald A. Wiemers, Robert Kohlheb
  • Publication number: 20100038249
    Abstract: A spent nuclear fuel is reprocessed by dissolving a spent nuclear fuel in an aqueous nitric acid solution and separating and recovering nuclides contained in the resulting fuel solution by solvent extraction. A spent nuclear fuel reprocessing method includes: an electrolytic valence adjustment step in which nuclides contained in the fuel solution is electrolytically reduced without removing fission products or minor actinides until valence of plutonium is at a level at which solvent extraction efficiency is low by using the valence of plutonium contained in the fuel solution as a parameter; and a nuclide separation step in which, by using an extraction solvent which extracts uranium contained in the fuel solution, uranium is distributed from the fuel solution subjected to the electrolytic valence adjustment step to the extraction solvent.
    Type: Application
    Filed: July 31, 2009
    Publication date: February 18, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Mizuguchi, Reiko Fujita, Kouki Fuse, Hitoshi Nakamura, Kazuhiro Utsunomiya, Nobuhiko Tanaka
  • Patent number: 7625470
    Abstract: A chemical generator device is arranged in association with an appliance having a cleaning zone where objects are cleaned. The chemical generator device includes an inlet to allow the introduction of at least one chemical composition, an operative area where a desired chemical composition is generated by utilizing the at least one chemical composition, an outlet communicating with the cleaning zone of the appliance, and a dispensing apparatus arranged to dispense the generated chemical composition to the cleaning zone from the operative area through the outlet.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: December 1, 2009
    Assignee: Whirlpool Corporation
    Inventors: Tremitchell L. Wright, Dennis Kehl, Robert J. Rolek, Joel A. Luckman
  • Patent number: 7604720
    Abstract: The present invention relates to a novel economical on-site electrochemical based membrane cell based process with the capability of producing high strength sodium hypochlorite and/or elemental chlorine gas in any ratio as required by the needs of a water or wastewater treatment plant. The system is compact and modular, using membrane cell based electrolyzers and utilizing novel process modifications and sensors to allow for the unattended control and safe operation of the process. The process allows the operator to produce elemental chlorine gas and sodium hypochlorite in any product ratio, such that 5% to 100% of the total chlorine produced by the process can be converted to high strength bleach. The process has the flexibility to produce stable high quality, low to high strength sodium hypochlorite solutions in concentrations ranging from about 2 to 15% trade as NaOCl.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: October 20, 2009
    Assignee: Electrolytic Technologies Corp.
    Inventors: Jerry J. Kaczur, Derek B. Lubie, Edmund M. Cudworth, Charles W. Clements, Martin E. Nelson
  • Publication number: 20090183995
    Abstract: A ceramic material (20, 20A, 20B, 20C, 20C?, 20D, 20E, 20E1, 20E2, 20E3, 20E4, 20F) comprises a structural mass made of at least one refractory compound selected from refractory borides, aluminides and oxycompounds, and combinations thereof. This structural mass has an open microporosity that is impregnated with colloidal and/or polymeric particles of iron oxide and/or a precursor of iron oxide. These particles promote wetting of the structural mass by molten aluminum and/or form upon heat treatment a sintered barrier against oxygen diffusion through the structural mass. The ceramic material can be used on cathodes (15), carbon or metal-based anodes (5,5,?), sidewalls (16) and other parts (26) of aluminum electrowinning cells, on electrodes (15A) of arc furnaces, and on stirrers (10) or vessels (45) of aluminum purification apparatus.
    Type: Application
    Filed: January 7, 2005
    Publication date: July 23, 2009
    Inventors: Thinh T. Nguyen, Vittorio De Nora
  • Publication number: 20090175960
    Abstract: A first aqueous solution filled in an electrolytic cell (2) is electrolyzed by applying DC voltage between the electrodes 7a and 7b in said electrolytic cell 2, to form an oxidation field short of electrons in said aqueous solution; and then, a second aqueous solution with carboxylic acid dissolved in it is mixed into the first aqueous solution in oxidation field state, so that the first aqueous solution in oxidation field state obtains electrons and is deoxidized, and the carboxylic acid is oxidized, to produce carbonic acid gas in said aqueous solution. Therefore, the present invention can be used to produce carbonic acid gas solution at a low cost easily.
    Type: Application
    Filed: September 22, 2006
    Publication date: July 9, 2009
    Applicant: OMSI CO., LTD.
    Inventors: Yoh Sano, Masahiko Asano, Hitoshi Yagi
  • Patent number: 7556722
    Abstract: An apparatus for electroplating a rotogravure cylinder out of a plating solution is disclosed. The apparatus includes a plating tank adapted to support the cylinder and to contain a plating solution so that the cylinder is at least partially disposed into the plating solution. The apparatus also includes a non-dissolvable anode at least partially disposed within the plating solution. A current source is electrically connected to the non-dissolvable anode and to the cylinder. An ultrasonic system may be provided to introduce wave energy into the plating solution includes at least one transducer element mountable within the tank and a power generator adapted to provide electrical energy to the transducer element. A holding tank having a circulation pump, a mixing system and heating and cooling elements for the plating solution may be provided.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: July 7, 2009
    Inventor: Hubert F. Metzger
  • Publication number: 20090159434
    Abstract: The invention provides a system and a process for collecting effluents produced by an electrolytic cell intended for the production of aluminium and for drawing said effluents away from the cell in a flow of gas. The system comprising a hooding to confine the effluents, at least one outlet channel to collect said flow of gas and suction means to draw said flow of gas away from the cell. The hooding includes removable hoods and, optionally, at least one door to get access to the inside of the hooding. The system further comprises at least one pipe for blowing pressurized air within the outlet channel so as to increase the rate of said flow of gas. Pressurized air supply is activated at a specified pressure Po so as to obtain a specified flow rate Ro.
    Type: Application
    Filed: April 4, 2007
    Publication date: June 25, 2009
    Inventors: Guillaume Girault, Philippe Cantin
  • Patent number: 7491302
    Abstract: Pure water 3 is made to pass through a carbon dioxide contact mechanism, to become carbonated water, and is supplied to an ozone gas and hydrogen gas generation section, so that the concentration of generated ozone gas becomes stable. As a result, the concentration of the generated ozone gas is high and stable, and a high concentration can be maintained.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: February 17, 2009
    Assignees: Nomura Micro Science Co., Ltd., COA Technology Co., Ltd.
    Inventors: Isao Sawamoto, Takazou Hirose, Takayuki Jizaimaru
  • Publication number: 20080257712
    Abstract: This invention relates to an apparatus for producing a metal powder product using either conventional electrowinning or alternative anode reaction chemistries in a flow-through electrowinning cell. A new design for a flow-through electrowinning cell that employs both flow-through anodes and flow-through cathodes is described. The present invention enables the production of high quality metal powders, including copper powder, from metal-containing solutions using conventional electrowinning processes, direct electrowinning, or alternative anode reaction chemistry.
    Type: Application
    Filed: June 30, 2008
    Publication date: October 23, 2008
    Applicant: PHELPS DODGE CORPORATION
    Inventors: John O. Marsden, Scot P. Sandoval, Antonioni C. Stevens, Timothy G. Robinson, Stanley R. Gilbert
  • Patent number: 7160430
    Abstract: In a sewage treatment plant, dissolved ammonium is extracted from the waste-water stream, and is transferred to a body of secondary water. The secondary water is passed through an electrolysis station, where the ammonium is transformed to nitrogen gas. The capture and transfer can be done by ion-exchange, the electrolysis then being done on the regenerant water. Or the capture and transfer can be done by first transforming the dissolved ammonium to ammonia gas by raising the pH of the waste-water, then passing the ammonia gas through acidic secondary-water, in which the ammonia dissolves, the electrolysis then being done on the acid-water. The electrolysed, ammonium-diminished, secondary-water can be re-used in further capture/transfer episodes. The secondary-water does not mix with the waste-water stream.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: January 9, 2007
    Assignee: ENPAR Technologies Inc.
    Inventors: Gene Sidney Shelp, Leonard Paul Seed
  • Patent number: 6899803
    Abstract: In order to regulate the metal ion concentration in an electrolyte fluid serving to electrolytically deposit metal and additionally containing substances of an electrochemically reversible redox system, it has been known in the art to conduct at least one portion of the electrolyte fluid through one auxiliary cell provided with one insoluble auxiliary anode and at least one auxiliary cathode, a current being conducted between them by applying a voltage. Accordingly, excess quantities of the oxidized substances of the redox system are reduced at the auxiliary cathode, the formation of ions of the metal to be deposited being reduced as a result thereof. Starting from this prior art, the present invention relates to using pieces of the metal to be deposited as an auxiliary cathode.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: May 31, 2005
    Assignee: Atotech Deutschland GmbH
    Inventors: Kai-Jens Matejat, Sven Lamprecht
  • Publication number: 20040168909
    Abstract: A three-dimensional flow-through electrode includes an efficient current feeding mechanism including current feeders comprising rods of conductive material, such as graphite, which are inserted at predetermined spacing into a flow-through electrode, such as a block of graphite felt. The current feeders are appropriately spaced throughout the electrode to allow for efficient current distribution. The large surface area provided by the flow-through electrode makes it possible to expose solutions or gases to relatively large areas of electrical charges, instituting electrical chemical reactions. A number of electrolytic chemical processes using the electrolytic cells include water treatment, chemical processing and production, hydro-metallurgical applications, and environmental clean-up. A method to replace the use of cyanide in gold and silver processing operations is also provided.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 2, 2004
    Inventor: Arden L. Larson
  • Patent number: 6537440
    Abstract: A method for extracting copper from a mineral feed containing copper sulphide mineral 1, which involves crushing and blending the feed 2, 6, 10 followed by leaching of the feed in an autoclave 20. The conditions in the autoclave are controlled so that the presence of oxygen at superatmospheric oxygen pressure maintains the ratio of ferrous to ferric ions at a level so as to facilitate the leaching of copper from the feed. The leaching is carried out in the presence of acid which may be itself generated by oxidising conditions in the autoclave. Further leaching is carried out in a series of tanks 22, 24, 26 and 28 after which the solids are separated from solution in a series of steps including treatment in a hydroclassifier 30, a clarifier 32 and a polishing filter 38. Copper is extracted from the resultant leachant at a copper extraction station 44 with a final copper product 54 being retrieved in electrowin cells 52.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: March 25, 2003
    Inventors: Geoffrey Richmond, David B Dreisinger
  • Patent number: 6350354
    Abstract: A modular solvent extraction plant for extracting metal from a metal are is provided. It includes a stage-wise, plug flow contactor that mixes an aqueous solution and an organic solvent solution into a mixed emulsion, a reactor to further mix the solutions, a separator for breaking up the emulsion into an aqueous solution and an organic solution, and a loaded organic coalescer that removes aqueous entrainment. It may also include a raffinate coalescer that removes organic entrainment, a second stage-wise, plug flow contactor that mixes an electrolyte solution with the organic solution from the loaded organic coalescer to form a second mixed emulsion, a second reactor, a second separator for breaking up the second emulsion, and an electrolyte coalescer. An organic scrub station may be used in place of the loaded organic coalescer. The contactors, reactors, separators, and coalescers can be mounted on movable structures.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: February 26, 2002
    Assignee: Koch-Glitsch, Inc.
    Inventors: Mark Neuman, Roger Cusack, Kevin McLoughlin
  • Publication number: 20010047934
    Abstract: For eliminating dioxins from soot containing dioxins adhering to incineration ash by decomposing them, in an easy and simple manner and at low cost, into a harmless and useful oil and water and recovering the oil and water, a mixed gas 3 composed of smoke and dioxin-entraining ash is passed through a particulate matter separator 6, where the mixed gas passes through a curtain of water 5 to cause the dioxin-entraining ash to be taken up in water. The ash-water mixture is separated into ash and water on a centrifuge 12. The ash is washed with washing water 22 to elute the oleaginous dioxins entrained by the ash to give an emulsion-like oil-water mixture and the resulting mixture is separated, by means of a centrifuge 23, into ash and the emulsion-like oil-water mixture in which dioxins are dissolved. This ash is washed first with acidified water 26, then with alkaline washing water 28 and further with neutral water 29, followed by separation into moist ash and aqueous washings.
    Type: Application
    Filed: November 30, 2000
    Publication date: December 6, 2001
    Inventor: Yukimasa Satoh
  • Patent number: 6231729
    Abstract: An apparatus for supplying a soluble metal compound to an electrolyte solution uses a powder wetting device in a loop from a working tank. The powder wetting machine supplies the powdered metal compound directly into the electrolyte solution which rapidly dissolves to replenish the electrolyte compound during the treating process. The apparatus is particularly suitable for replenishing the metal salts consumed during an electroplating process.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: May 15, 2001
    Assignee: Andritz-Patentverwaltungs-Gesellschaft m.b.H.
    Inventors: Gerald Maresch, Herbert Track, Lutz Wieser
  • Patent number: 5788888
    Abstract: Described is a process for preparing a three-dimensional article of a lyotropic polymer comprising the steps of (a) forming a shaped article of a liquid crystalline solution of a lyotropic polymer; (b) washing the shaped article with a washing fluid under conditions sufficient to reduce the solvent content of the article to less than about 2,000 parts per million, wherein the dimensions of the washed article are no less than 0.05 inches by 0.05 inches by 0.05 inches. Such articles are useful for many applications, particularly those requiring fire- and/or heat-resistance.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: August 4, 1998
    Assignee: The Dow Chemical Company
    Inventors: Arie Cohen, Myrna Serrano, Norman L. Madison, deceased, Peter E. Pierini, Ritchie A. Wessling, Donald E. McLemore, Donald L. Schmidt
  • Patent number: 5639362
    Abstract: An apparatus for de-silvering a silver-containing solution, comprises a plurality of electrolysis cells (10, S1, S2) each having an anode (20, 120, 220) and a cathode (30, 130, 230). A master cell (10) further comprises a reference electrode (45). The remaining cell or cells constitute slave cells (S1, S2). Control means (41) adjust the cathode potential applied to the slave cells (S1, S2) in response to the current flow (I.sub.M) through the master cell (10). The apparatus is particularly suitable for de-silvering large volumes of silver-containing solution, without the use of high currents.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: June 17, 1997
    Assignee: AGFA-Gevaert N. V.
    Inventors: Werner Van de Wynckel, Benedictus Jansen
  • Patent number: 5614067
    Abstract: A leaching device for electrolyzed silver comprising a pair of silver electrodes an electrolysis power source for applying a DC electrolyzing voltage between both of the electrodes, a power source control circuit for ON/OFF control of the electrolysis power source, a current control circuit for controlling the electrolyzing current flowing between both of the electrodes thereby controlling the leaching amount of silver, a polarity switching circuit for switching the polarity of the electrolyzing voltage, a driving circuit for driving the polarity switching circuit, and an abnormality sensing circuit that senses the abnormality of the silver electrode based on the change of an electric current flowing to the silver electrode.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: March 25, 1997
    Assignee: OMCO Co., Ltd.
    Inventor: Tatsuo Okazaki
  • Patent number: 5569370
    Abstract: An electrochemical system for the recovery of metals from metal ores in which reactions are carried out in separate anode and cathode tanks with the liquid product from the anode tank being separated and purified before being returned to the cathode tank for metal deposition. The separation includes thickening such as liquid solid separation with the liquid proceeding to the cathode tank. A reaction stage may be included before the thickening stage. Purification may include removal of impurities, adjustment of chemical and physical conditions and the addition of cathode reaction enhancers.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: October 29, 1996
    Assignee: RMG Services Pty. Ltd.
    Inventor: Rodolfo A. Gomez