CA2181037A1 - Gas treatment of molten metals - Google Patents

Gas treatment of molten metals

Info

Publication number
CA2181037A1
CA2181037A1 CA002181037A CA2181037A CA2181037A1 CA 2181037 A1 CA2181037 A1 CA 2181037A1 CA 002181037 A CA002181037 A CA 002181037A CA 2181037 A CA2181037 A CA 2181037A CA 2181037 A1 CA2181037 A1 CA 2181037A1
Authority
CA
Canada
Prior art keywords
metal
gas
openings
trough
injector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002181037A
Other languages
French (fr)
Other versions
CA2181037C (en
Inventor
Peter D. Waite
Robert Dumont
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rio Tinto Alcan International Ltd
Original Assignee
Peter D. Waite
Robert Dumont
Alcan International Limited
Rio Tinto Alcan International Limited/Rio Tinto Alcan International Limi Tee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peter D. Waite, Robert Dumont, Alcan International Limited, Rio Tinto Alcan International Limited/Rio Tinto Alcan International Limi Tee filed Critical Peter D. Waite
Publication of CA2181037A1 publication Critical patent/CA2181037A1/en
Application granted granted Critical
Publication of CA2181037C publication Critical patent/CA2181037C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • C22B21/064—Obtaining aluminium refining using inert or reactive gases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A method of and apparatus for treating molten metal to achieve effective removal of such unwanted inclusions as gases. alkali metals, entrained solids, and the like. The method comprises introducing molten metal into a trough, such as the trough provided between a melting furnace and a casting machine, providing at least one mechanically movable gas injector submerged within the metal in the trough and injecting a gas into the metal in a part of the trough forming a treatment zone through the injector(s) to form gas bubbles in the metal while moving the injector(s) mechanically to minimize bubble size and maximize distribution of the gas within the metal. The injectors are preferably rotated and comprise a rotor body having a cylindrical side surface and a bottom surface, at least three openings in the side surface spaced symmetrically around the rotor body, at least one opening in the bottom surface, and at least one internal passageway for gas delivery and an internal structure for interconnecting the openings in the side surface, the openings in the bottom surface and the internal passageway. The internal structure is adapted to cause gas bubbles emanating from the internal passageway to break up into finer bubbles and to cause a metal/gas mixture to issue from the openings in the side surface in a generally horizontal and radial manner.
CA002181037A 1994-02-04 1995-02-03 Gas treatment of molten metals Expired - Lifetime CA2181037C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US191,635 1988-05-06
US08/191,635 US5527381A (en) 1994-02-04 1994-02-04 Gas treatment of molten metals
PCT/CA1995/000049 WO1995021273A1 (en) 1994-02-04 1995-02-03 Gas treatment of molten metals

Publications (2)

Publication Number Publication Date
CA2181037A1 true CA2181037A1 (en) 1995-08-10
CA2181037C CA2181037C (en) 2002-07-30

Family

ID=22706281

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002181037A Expired - Lifetime CA2181037C (en) 1994-02-04 1995-02-03 Gas treatment of molten metals

Country Status (10)

Country Link
US (3) US5527381A (en)
EP (3) EP0742842A1 (en)
JP (1) JP4050311B2 (en)
AU (1) AU693846B2 (en)
CA (1) CA2181037C (en)
DE (6) DE29522319U1 (en)
ES (2) ES2173537T3 (en)
NO (2) NO312202B1 (en)
WO (1) WO1995021273A1 (en)
ZA (1) ZA95889B (en)

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US6056803A (en) * 1997-12-24 2000-05-02 Alcan International Limited Injector for gas treatment of molten metals
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DE60113891T2 (en) 2000-02-24 2006-07-06 Mitsubishi Materials Corp. Plant for producing continuously cast billets of low-oxygen copper
FR2816706B1 (en) * 2000-11-13 2003-01-10 Cogema LEVEL MEASUREMENT ROD OF A MELTING BATH
US8891583B2 (en) * 2000-11-15 2014-11-18 Ati Properties, Inc. Refining and casting apparatus and method
US6496529B1 (en) * 2000-11-15 2002-12-17 Ati Properties, Inc. Refining and casting apparatus and method
US6902696B2 (en) 2002-04-25 2005-06-07 Alcoa Inc. Overflow transfer furnace and control system for reduced oxide production in a casting furnace
DE10301561A1 (en) * 2002-09-19 2004-05-27 Hoesch Metallurgie Gmbh Rotor, device and method for introducing fluids into a molten metal
EP1543171A1 (en) * 2002-09-19 2005-06-22 Hoesch Metallurgie GmbH Rotor, device and method for introducing fluids into a molten bath
BRMU8402794U8 (en) * 2004-08-27 2021-10-26 Magnesita Insider Refratarios Ltda Configuration applied to a device for injecting gas and/or gas and powders into liquid metals through a rotating refractory lance
BRPI0608702A2 (en) * 2005-03-08 2017-07-11 Valspar Sourcing Inc POLYMER, OXYGEN ABSORBING COMPOSITION, SOLUTION, ARTICLE, AND PROCESSES FOR PRODUCING AN OXYGEN SEQUESTRANT POLYMETER AND OXYGEN SEQUESTRATION RESIN
US7578960B2 (en) 2005-09-22 2009-08-25 Ati Properties, Inc. Apparatus and method for clean, rapidly solidified alloys
US7803211B2 (en) 2005-09-22 2010-09-28 Ati Properties, Inc. Method and apparatus for producing large diameter superalloy ingots
US7803212B2 (en) * 2005-09-22 2010-09-28 Ati Properties, Inc. Apparatus and method for clean, rapidly solidified alloys
CN101297052B (en) * 2005-10-25 2012-03-21 力拓加铝国际有限公司 In-line salt refining of molten aluminium alloys
US8381047B2 (en) * 2005-11-30 2013-02-19 Microsoft Corporation Predicting degradation of a communication channel below a threshold based on data transmission errors
CA2656999C (en) * 2006-07-13 2015-08-18 Pyrotek, Inc. Impellar for dispersing gas into molten metal
BRPI0720413A2 (en) * 2006-12-19 2013-12-31 Novelis Inc METAL TRANSFER MACHINE AND METHODS OF PROVIDING HEAT TO A MELTED METAL DRAINING THROUGH A METAL TRANSFER MACHINE AND HEATING A SECTION OF A MELTED TRANSFER CHANNEL
WO2008103912A1 (en) * 2007-02-23 2008-08-28 Alcoa Inc. Installation and method for in-line molten metal processing using salt reactant in a deep box degasser
US8642916B2 (en) 2007-03-30 2014-02-04 Ati Properties, Inc. Melting furnace including wire-discharge ion plasma electron emitter
US8748773B2 (en) 2007-03-30 2014-06-10 Ati Properties, Inc. Ion plasma electron emitters for a melting furnace
US7798199B2 (en) 2007-12-04 2010-09-21 Ati Properties, Inc. Casting apparatus and method
WO2009111536A2 (en) 2008-03-05 2009-09-11 Rundquist Victor F Niobium as a protective barrier in molten metals
WO2010095360A1 (en) * 2009-02-19 2010-08-26 三井金属鉱業株式会社 Device for stirring molten metal
CA2778438C (en) 2009-12-10 2015-06-23 Novelis Inc. Molten metal-containing vessel and methods of producing same
JP5697682B2 (en) * 2009-12-10 2015-04-08 ノベリス・インコーポレイテッドＮｏｖｅｌｉｓ Ｉｎｃ． Compression rod assembly for molten metal containment structure
RU2542038C2 (en) 2009-12-10 2015-02-20 Новелис Инк. Method of production of tight heat-resistant butts in vessel for metal and vessel with such butts
BR112012013775B1 (en) * 2009-12-10 2020-09-01 Novelis Inc FUSION METAL CONTAINMENT STRUCTURE
CA2784200C (en) 2010-01-13 2014-08-19 Novelis Inc. Molten metal containment structure having movable cover
PT2556176T (en) 2010-04-09 2020-05-12 Southwire Co Ultrasonic degassing of molten metals
US8652397B2 (en) 2010-04-09 2014-02-18 Southwire Company Ultrasonic device with integrated gas delivery system
WO2011130825A1 (en) 2010-04-19 2011-10-27 Novelis Inc. Molten metal leakage confinement and thermal optimization in vessels used for containing molten metals
US8747956B2 (en) 2011-08-11 2014-06-10 Ati Properties, Inc. Processes, systems, and apparatus for forming products from atomized metals and alloys
NO332418B1 (en) * 2011-01-04 2012-09-17 Alu Innovation As Rotor for supplying heat to a melt
CN102719680A (en) * 2012-06-21 2012-10-10 重庆硕龙科技有限公司 Purification method for light metal and alloy melt thereof
CZ2012446A3 (en) 2012-07-02 2013-08-28 Jap Trading, S. R. O. Rotary device for refining molten metal
DE202012103082U1 (en) 2012-08-15 2012-11-15 Mkm Mansfelder Kupfer Und Messing Gmbh Furnace for removing impurities from molten metal
DE102012108511A1 (en) * 2012-09-12 2014-03-13 Ks Aluminium-Technologie Gmbh Dosing furnace, used for pressure casting system, includes heatable melt container including porous plugs, gas-tight hopper, channel to connect dosing furnace with casting mold, and unit to regulate pressure and temperature in container
US10465987B2 (en) 2013-09-27 2019-11-05 Rio Tinto Alcan International Limited Dual-function impeller for a rotary injector
ES2744844T3 (en) * 2013-11-18 2020-02-26 Southwire Co Llc Ultrasonic probes with gas outlets for degassing molten metals
US10233515B1 (en) 2015-08-14 2019-03-19 Southwire Company, Llc Metal treatment station for use with ultrasonic degassing system
FR3096987B1 (en) 2019-06-07 2021-08-27 Constellium Issoire Device to trap hydrogen
US20220048105A1 (en) * 2020-08-13 2022-02-17 Qingyou Han Acoustic rotary liquid processor
CA3231495A1 (en) 2021-09-15 2023-03-23 Sanisure, Inc. Low volume magnetic mixing system
CN114749611B (en) * 2022-03-16 2023-06-23 河南科技大学 Shrinkage cavity device is prevented with foundry goods to hot working casting

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Also Published As

Publication number Publication date
AU693846B2 (en) 1998-07-09
EP0900853B1 (en) 2002-05-08
DE69526684D1 (en) 2002-06-13
WO1995021273A1 (en) 1995-08-10
JP4050311B2 (en) 2008-02-20
EP1132487B1 (en) 2003-05-02
US5593634A (en) 1997-01-14
CA2181037C (en) 2002-07-30
EP0742842A1 (en) 1996-11-20
DE69530630T2 (en) 2004-02-26
US5656236A (en) 1997-08-12
NO312202B1 (en) 2002-04-08
ES2173537T3 (en) 2002-10-16
DE742842T1 (en) 2000-08-31
DE69530630D1 (en) 2003-06-05
EP0900853A1 (en) 1999-03-10
AU1530295A (en) 1995-08-21
JPH09508441A (en) 1997-08-26
DE69526684T2 (en) 2002-11-07
NO20014930D0 (en) 2001-10-10
DE900853T1 (en) 2000-08-31
ZA95889B (en) 1995-10-13
NO20014930L (en) 1996-10-04
DE29522319U1 (en) 2001-10-25
NO963250D0 (en) 1996-08-02
DE29522318U1 (en) 2001-10-18
EP1132487A1 (en) 2001-09-12
US5527381A (en) 1996-06-18
NO963250L (en) 1996-10-04
ES2193996T3 (en) 2003-11-16

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MKEX Expiry

Effective date: 20150203