Patents Examined by Tima M. McGuthry-Banks
  • Patent number: 10882101
    Abstract: Apparatus and method for filtering molten metal, in particular aluminium, including a container (1) with an outer shell or casing of metal and an inner thermally insulated interior cladding or wall construction made of heat resistant insulation and refractory material. A removable lid (2) provided on top of the container to keep the container sealed (air tight) during operation, the container (1) being provided with an inlet chamber (3) having an inlet opening (4) receiving metal from a metal supply launder (10) and an outlet chamber (5) with an outlet opening (6) in which a ceramic or refractory filter (7) is mounted.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: January 5, 2021
    Assignee: NORSK HYDRO ASA
    Inventors: Ulf Tundal, Idar Kjetil Steen, John Olav Fagerlie, Terje Haugen
  • Patent number: 10883155
    Abstract: A method for recovering gold from an ore or a refining intermediate containing gold, comprising a step of contacting a gold-containing raw material obtained from the ore or the refining intermediate with an acidic solution containing a copper ion, an iron ion and a halide ion while supplying an oxidizing agent to leach the gold component in the raw material. The halide ion in the acidic solution is only a bromide ion, wherein the concentration of the bromide ion in the acidic solution is 100 g/L or more or the concentration of the bromide ion in the acidic solution is less than 100 g/L. When the concentration of the bromide ion is less than 100 g/L, a concentration ratio of the halide ion in the acidic solution is such that a ratio of the concentration of the chloride ion to the concentration of the bromide ion is ? or less.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 5, 2021
    Assignee: JX NIPPON MINING & METALS CORPORATION
    Inventors: Akira Yoshimura, Yoshifumi Abe
  • Patent number: 10876188
    Abstract: A method of manufacturing an aluminum alloy ingot using scrap aluminum alloy in the 2xxx or 7xxx series, and a fabrication method after rolling, extrusion and/or forging of an aeronautical structure comprising the steps in the above method, and then at least one rolling, extrusion and/or forging step of the aluminum alloy ingot in the series of scrap used.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: December 29, 2020
    Assignee: CONSTELLIUM ISSOIRE
    Inventors: Alireza Arbab, Laurent Boissonnet, Jules Diawara, Pascal Hervieu, Anne Pichat
  • Patent number: 10851437
    Abstract: A Ti-6A1-4V titanium powder alloy composition having enhanced strength resulting from the addition of one or more of the following elements without requiring an increase in oxygen content: Aluminum Iron Nitrogen Carbon The composition may also be used for Ti-6A1-4V titanium alloy starting bar stock.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: December 1, 2020
    Assignee: Carpenter Technology Corporation
    Inventor: Charles Frederick Yolton
  • Patent number: 10822668
    Abstract: Process for dephosphorization of molten metal during a refining process using a lime composition in the form of compacted particles having a Shatter Test Index of less than 20%, leading to a refined metal reduced in phosphorus components to the extent that the refined metal reduced in phosphorus is showing a phosphorus content lower than 0.02 w % based on the total weight of the refined metal reduced in phosphorus.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: November 3, 2020
    Assignee: S.A. Lhoist Recherche et Developpement
    Inventors: Michael Nispel, Guillaume Criniere, Eric Perrin, Thierry Chopin, Jose Noldin
  • Patent number: 10815549
    Abstract: Digestion of impure alumina with sulfuric acid dissolves all constituents except silica. Resulting sulfates, produced from contaminants in the impure alumina, remain in solution at approximately 90° C. Hot filtration separates silica. Solution flow over metallic iron reduces ferric sulfate to ferrous sulfate. Controlled ammonia addition promotes hydrolysis and precipitation of hydrated titania from titanyl sulfate that is removed by filtration. Addition of ammonium sulfate forms ferrous ammonium sulfate and ammonium aluminum sulfate solutions. Alum is preferentially separated by crystallization. Addition of ammonium bicarbonate to ammonium alum solution precipitates ammonium aluminum carbonate which may be heated to produce alumina, ammonia, and carbon dioxide. The remaining iron rich liquor also contains magnesium sulfate. Addition of oxalic acid generates insoluble ferrous oxalate which is thermally decomposed to ferrous oxide. Carbon monoxide reduces the ferrous oxide to metallic iron.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 27, 2020
    Assignee: AluChem Companies, Inc.
    Inventor: Ian Manson
  • Patent number: 10815548
    Abstract: A method for producing briquettes from pellet fines, DRI sludge, DRI fines and dust from DRI dedusting systems and, in this way, reincorporating same into steel production processes, thereby contributing to the re-use of the by-products of these processes, as well as minimizing the stocks of these types of materials and, consequently, helping to improve the environment. The invention comprises: grinding and sieving the pellet fines and the DRI sludge; sieving the DRI fines; storing the dust from DRI dedusting systems; briquetting with roller presses, using liquid sodium silicate and bentonite or composite Portland cement as binders; sieving the briquettes; shredding the edges and waste of the fresh briquettes; and curing in order to improve the physical properties thereof, such as strength. Once cured, the fresh briquette can be stored or sent directly to direct-reduced iron production processes for use as part of the feedstock for reduction ovens or reactors.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 27, 2020
    Assignee: D R&D Labs and Engineering S. DE R. L. DE C.V
    Inventors: Francisco Javier Ramirez Alvarez, Francisco Javier Palafox Sanchez
  • Patent number: 10809746
    Abstract: Provided are a method and an arrangement for operating a metallurgical furnace. The method comprises a feeding step, and a temperature controlling step for controlling the temperature of a molten metal layer and a slag layer in a furnace space of the metallurgical furnace. The temperature controlling step comprises a first measuring step for measuring the slag temperature (Tslag), a second measuring step for measuring the slag liquidus temperature (Tslag, liquidus), and a calculating step for calculating a superheat temperature (Tsuperheat) by calculating the temperature difference between the slag temperature (Tslag) and the slag liquidus temperature (Tslag, liquidus). In case the calculated superheat temperature (Tsuperheat) is outside a predefined superheat temperature range (Tsuperheat set), the method comprises an adjusting step for adjusting to adjust the actual superheat temperature. Also provided are computer program products.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: October 20, 2020
    Assignee: OUTOTEC (FINLAND) OY
    Inventors: Peter Björklund, Oskari Karhuvaara, Mikael P. Jåfs, Lauri P. Pesonen
  • Patent number: 10799943
    Abstract: A method of producing an exothermic mold powder in a form of sprayed granules of the present invention includes spray-drying into granules, an aqueous slurry containing: a raw material blend; and a metal silicon powder and/or a silicon alloy powder, the method comprising adjusting the pH of the aqueous slurry to 13 or less.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: October 13, 2020
    Assignee: SHINAGAWA REFRACTORIES CO., LTD.
    Inventors: Erika Nakatani, Yukimasa Iwamoto
  • Patent number: 10788206
    Abstract: Systems and methods for efficiently performing rotary batch decoating can use time-offset batch reactors. A first batch reactor can operate out of phase with a second batch reactor, so that the burning of pyrolysis gases from the first reactor can be used to provide fuel to the incinerator used to heat the material in the second reactor. After the first reactor is dumped and filled with new material, the pyrolysis gases from the second reactor can be used to provide fuel to the incinerator, which heats the material in the first reactor.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: September 29, 2020
    Assignee: Novelis Inc.
    Inventor: Edwin L. Rauch
  • Patent number: 10781500
    Abstract: The invention relates to granules composed of agglomerated reactive bulk material and a binder matrix, the binder matrix comprising as binder an organic or inorganic salt.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: September 22, 2020
    Assignee: Rheinkalk GmbH
    Inventor: Wolfgang Rückert
  • Patent number: 10781504
    Abstract: Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 22, 2020
    Assignee: MT2, LLC
    Inventors: Michael L. Enos, James M. Barthel, Trevor C. Schwaab
  • Patent number: 10781501
    Abstract: A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide is disclosed. In some embodiments, the method may comprise the step of processing a metal sulfide concentrate in a reductive activation circuit 220 that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate. The method may further comprise the step of subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit 240 to extract metal values. In some disclosed embodiments, reductive activation steps and/or oxidative dissolution steps may employ mechano-chemical and/or physico-chemical processing of particles or agglomerates thereof. Reductive activation may be made prior to heap leaching or bio-leaching operations to improve metal extraction. Systems for practicing the aforementioned methods are also disclosed.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: September 22, 2020
    Assignee: FLSmidth A/S
    Inventors: David J. Chaiko, Frank Baczek, Sara (Sally) Rocks, Carlos Eyzaguirre
  • Patent number: 10781499
    Abstract: A method of operating a BOF bottom stir tuyere having an inner nozzle surrounded by an annular nozzle, including during a hot metal pour phase and a blow phase, flowing an inert gas through both nozzles; during a tap phase, initiating a flow of a first reactant through the inner nozzle and a flow of a second reactant through the annular nozzle, and ceasing the flow of inert gas through the nozzles, wherein the first and second reactants includes fuel and oxidant, respectively, or vice-versa, such that a flame forms as the fuel and oxidant exit the tuyere; during a slag splash phase, continuing the flows of fuel and oxidant to maintain the flame; and after ending the slag splash phase and commencement of another hot metal pour phase, initiating a flow of inert gas through both nozzles and ceasing the flows of the first and second reactants.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: September 22, 2020
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gregory J. Buragino, Shailesh Pradeep Gangoli, Anshu Gupta, Anup Vasant Sane, Avishek Guha, Xiaoyi He, Michael David Buzinski, Kyle J. Niemkiewicz, Russell James Hewertson
  • Patent number: 10781505
    Abstract: A method for the pyrometallurgical processing of a sulphide material containing copper, the sulphide containing relatively high quantities of silica and relatively low quantities of iron, wherein the process comprises feeding the sulphide material to a TSL furnace operated under oxidising conditions such that the sulphide material forms blister copper containing between 1.2 and 1.5 wt % sulphur and a slag containing between 7 and 13 wt % copper.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: September 22, 2020
    Assignees: Glencore Technology Pty Ltd, Commonwealth Scientific and Industrial Research Organisation
    Inventors: Stanko Nikolic, Chunlin Chen, Shafi Jahanshahi
  • Patent number: 10781503
    Abstract: The invention relates to a method for removing metal and/or precious metal-containing depositions from substrates. The substrate is subjected to treatment with an organo amine protectant component P and an inorganic active component A. Component P may be formed in situ by reaction with component R. Component P is an organic amine and/or organic amine hydrochloride. Component A is an inorganic compound and component R is an organic compound that can be split along the C—N bond by the component A into an organic amine. The metals in the form of organo-metallic complexes can be isolated and/or separated by means of different chemical reactions and/or biosorption.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: September 22, 2020
    Inventor: Petr Dedek
  • Patent number: 10781498
    Abstract: The invention relates to a plant complex for steel production comprising a blast furnace for producing pig iron, a converter steel mill for producing crude steel and a gas-conducting system for gases that occur when producing the pig iron and/or producing the crude steel. According to the invention, the plant complex additionally has a chemical plant or biotechnological plant, connected to the gas-conducting system, and also energy storage for covering at least part of the electricity demand of the plant complex. Also the subject of the invention is a method for operating the plant complex.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 22, 2020
    Assignee: THYSSENKRUPP AG
    Inventors: Reinhold Achatz, Jens Wagner, Markus Oles, Peter Schmöle, Ralph Kleinschmidt, Christoph Meißner, Niels Bredemeyer, Johannes Völkl
  • Patent number: 10767239
    Abstract: A production method for smelting clean steel from full-scrap steel using duplex electric arc furnaces. Electric arc furnaces located in two positions are connected in series, wherein the electric arc furnace in a first position is dephosphorization electric arc furnace, and the electric arc furnace in a second position is a decarbonization electric arc furnace. The production method includes: performing smelting by combining a decarbonization electric arc furnace and 1-3 dephosphorization electric arc furnaces; a specific process of performing the smelting includes: in a charging period of the 1-3 dephosphorization electric arc furnaces, adding the full-scrap steel for the smelting, lime, slag in the decarbonization electric arc furnace, auxiliary materials and carbon powder or a carbon block into the dephosphorization electric arc furnace.
    Type: Grant
    Filed: April 22, 2018
    Date of Patent: September 8, 2020
    Assignees: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, TANGSHAN FIRST TANG BAOSHENG FUNCTIONAL MATERIALS CO., LTD.
    Inventors: Rong Zhu, Guangsheng Wei, Tianping Tang, Kai Dong, Liangxin Zhao, Xuetao Wu, Fengwu Chen
  • Patent number: 10724115
    Abstract: This invention relates to magnetite-based sintered iron ore wherein a magnetite ore powder, which is not currently utilized owing to its low reducibility index among iron ore materials serving as a main material in iron-making processes, is improved so as to have a high reducibility index, and to a method of manufacturing the same.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: July 28, 2020
    Assignee: Korea University Research and Business Foundation
    Inventors: Joonho Lee, Joon Seok Oh
  • Patent number: 10718034
    Abstract: A composition based on quick calcium-magnesium compounds in the form of briquettes is shown, as well as a method for the preparation and use thereof. The composition of the briquettes contains quicklime in the form of milled particles at a concentration of at least 10% by weight and at most 100% by weight relative to the weight of the composition. The compositions in the form of briquettes have a Shatter test index of less than 10%.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: July 21, 2020
    Assignee: S. A. Lhoist Recherche et Developpement
    Inventors: Guillaume Criniere, Michael Nispel