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GB1130070A - Electric induction furnace - Google Patents

Electric induction furnace

Info

Publication number
GB1130070A
GB1130070A GB14243/67A GB1424367A GB1130070A GB 1130070 A GB1130070 A GB 1130070A GB 14243/67 A GB14243/67 A GB 14243/67A GB 1424367 A GB1424367 A GB 1424367A GB 1130070 A GB1130070 A GB 1130070A
Authority
GB
United Kingdom
Prior art keywords
coil
sheath
fusion
charge
layer
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.)
Expired
Application number
GB14243/67A
Inventor
Jean Reboux
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1130070A publication Critical patent/GB1130070A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/021—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by induction heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B15/00—Drawing glass upwardly from the melt
    • C03B15/14—Drawing tubes, cylinders, or rods from the melt
    • C03B15/16—Drawing tubes, cylinders or rods, coated with coloured layers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/653—Processes involving a melting step
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/22—Furnaces without an endless core
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/367—Coil arrangements for melting furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2211/00—Heating processes for glass melting in glass melting furnaces
    • C03B2211/70—Skull melting, i.e. melting or refining in cooled wall crucibles or within solidified glass crust, e.g. in continuous walled vessels
    • C03B2211/71—Skull melting, i.e. melting or refining in cooled wall crucibles or within solidified glass crust, e.g. in continuous walled vessels within segmented wall vessels where the molten glass solidifies between and seals the gaps between wall segments

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Electromagnetism (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • General Induction Heating (AREA)

Abstract

1,130,070. Induction heating. COMMISSARIAT A L'ENERGIE ATOMIQUE. 29 March, 1967 [5 April, 1966], No. 14243/67. Heading H5H. [Also in Division B1] A radio frequency induction furnace for melting refractory materials, e.g. UO 2 , Al 2 O 3 , MgO, zirconia, introduced in powder form and subsequently resolidified has the water-cooled copper inductor coil 1 separated from the charge 3 by a protective sheath 2 transparent to the radio-frequency radiation of coil 1 and comprising water cooled copper casings 5 separated by quartz or alumina strips 6 or sprayed with alumina. The casings 5 are mounted on a water-cooled ceramic base 11, and bound with glass or alumina fabric (see chain dots) or provided with top and bottom manifolds. Initially, to start the fusion, coil 1 is in the bottom position with respect to sheath 2 and a thin layer of the powdered charge is placed on the base 11 and preheated. If the fusion is performed in air thin plates of the metal whose oxide constitutes charge 3 are placed on the layer and the metal oxidizes and heats to start fusion. If the fusion is performed in a protective atmosphere, e.g. reducing, O 2 , an impervious quartz casing 16 has tubes for establishing this atmosphere and a tungsten filament is placed on the layer. Preheating can alternatively be carried out by a plasma or auxiliary arc torch. The layer melts except for an annular zone (12, Fig. 2) adjacent the sheath, which remains in the powdered or sintered state. Sheath 2 is then fed progressively with charge 3 and coil 1 is moved progressively in direction 4, the melted zone behind coil 1 re-solidifying, zone adjacent coil 1 melting, and zone above coil 1 remaining in powdered form, the liquid-solid fronts moving with coil 1. Casings 5 may have a profiled crosssection and sheath 2 may have a square- or star-shaped cross-section to produce refractory rods of similar shape.
GB14243/67A 1966-04-05 1967-03-29 Electric induction furnace Expired GB1130070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR56436A FR1492063A (en) 1966-04-05 1966-04-05 Further development of high frequency electric furnaces for the continuous production of electro-cast refractories

Publications (1)

Publication Number Publication Date
GB1130070A true GB1130070A (en) 1968-10-09

Family

ID=8605545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14243/67A Expired GB1130070A (en) 1966-04-05 1967-03-29 Electric induction furnace

Country Status (12)

Country Link
US (1) US3461215A (en)
BE (1) BE696062A (en)
BR (1) BR6788201D0 (en)
CH (1) CH472166A (en)
DE (1) DE1615195B1 (en)
ES (1) ES338865A1 (en)
FR (1) FR1492063A (en)
GB (1) GB1130070A (en)
IL (1) IL27699A (en)
LU (1) LU53351A1 (en)
NL (1) NL162285C (en)
SE (1) SE335392B (en)

Families Citing this family (52)

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GB1145769A (en) * 1966-01-28 1969-03-19 Standard Telephones Cables Ltd Improvements in or relating to apparatus for the heat treatment of electrically conductive materials
GB1118505A (en) * 1966-01-28 1968-07-03 Standard Telephones Cables Ltd Improvements in or relating to apparatus for the heat treatment of electrically conductive materials
DE1690650B1 (en) * 1967-09-01 1972-02-03 Park Ohio Industries Inc Induction melting furnace
GB1271493A (en) * 1968-05-09 1972-04-19 Stanelco Thermatron Ltd Improved treatment process
FR2036418A5 (en) * 1969-03-13 1970-12-24 Commissariat Energie Atomique
FR2052082A5 (en) * 1969-07-11 1971-04-09 Commissariat Energie Atomique
GB1269762A (en) * 1970-01-09 1972-04-06 David Ainsworth Hukin Improvements in or relating to crucibles
FR2100553B1 (en) * 1970-06-16 1973-08-10 Creusot Forges Ateliers
FR2119174A6 (en) * 1970-12-23 1972-08-04 Commissariat Energie Atomique Recovery of high melting metals from oxides directly - using a magnesium and a fluoride slag
US4049384A (en) * 1975-04-14 1977-09-20 Arthur D. Little, Inc. Cold crucible system
US4058668A (en) * 1976-03-01 1977-11-15 The United States Of America As Represented By The Secretary Of The Interior Cold crucible
SE432150B (en) * 1976-10-04 1984-03-19 Siderurgie Fse Inst Rech Apparatus for metallurgical induction treatment of metals and metallic or other alloys
SU748918A1 (en) * 1977-12-26 1980-07-15 Московский Ордена Ленина Энергетический Институт Induction heating apparatus
US4221762A (en) * 1978-01-30 1980-09-09 Andrjushin Alexandr I Apparatus for preparing carbides
US4202400A (en) * 1978-09-22 1980-05-13 General Electric Company Directional solidification furnace
US4292489A (en) * 1978-12-01 1981-09-29 The Continental Group, Inc. Tab heating and applying apparatus
FR2497050A1 (en) * 1980-12-23 1982-06-25 Saphymo Stel COLD CAGE DIRECT INDUCTION FUSION DEVICE WITH ELECTROMAGNETIC CONTAINMENT OF MOLTEN LOAD
FR2531062A2 (en) * 1981-11-06 1984-02-03 Saphymo Stel Device for melting, by direct induction, dielectric substances of the glass or enamel type.
DE3316546C1 (en) * 1983-05-06 1984-04-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Cold crucible for melting and crystallizing non-metallic inorganic compounds
US4560849A (en) * 1984-06-13 1985-12-24 The United States Of America As Represented By The United States Department Of Energy Feedback regulated induction heater for a flowing fluid
FR2566890B1 (en) * 1984-06-29 1986-11-14 Commissariat Energie Atomique COLD CAGE FOR HIGH FREQUENCY ELECTROMAGNETIC INDUCTION MELTING CRUCIBLE
US4633481A (en) * 1984-10-01 1986-12-30 Ppg Industries, Inc. Induction heating vessel
US4610711A (en) * 1984-10-01 1986-09-09 Ppg Industries, Inc. Method and apparatus for inductively heating molten glass or the like
FR2599482B1 (en) * 1986-06-03 1988-07-29 Commissariat Energie Atomique HIGH FREQUENCY INDUCTION FUSION OVEN
US4780121A (en) * 1987-04-03 1988-10-25 Ppg Industries, Inc. Method for rapid induction heating of molten glass or the like
FR2621387B1 (en) * 1987-10-06 1990-01-05 Commissariat Energie Atomique INDUCTION OVEN CRUCIBLE
DE3910777C2 (en) * 1989-04-04 2001-08-09 Ald Vacuum Techn Ag Induction furnace with a metal crucible
FR2647196B1 (en) * 1989-05-19 1991-06-28 Cezus Co Europ Zirconium COLD CRUCIBLE DRAINED FROM THE BOTTOM
FR2648065A1 (en) * 1989-06-12 1990-12-14 Solvay DEVICE FOR RECOVERING BY MELTING THE METAL CONSTITUTING A FUSE CORE
DE3940029C2 (en) * 1989-12-04 1994-04-14 Leybold Ag Crucibles for induction heating
US5550353A (en) * 1990-01-31 1996-08-27 Inductotherm Corp. Induction heating coil assembly for prevent of circulating current in induction heating lines for continuous-cast products
US5257281A (en) * 1990-01-31 1993-10-26 Inductotherm Corp. Induction heating apparatus and method
US5272720A (en) * 1990-01-31 1993-12-21 Inductotherm Corp. Induction heating apparatus and method
US5090022A (en) * 1990-05-21 1992-02-18 Inductotherm Corp. Cold crucible induction furnace
DE4018925A1 (en) * 1990-06-13 1991-12-19 Leybold Ag INDUCTION MELTING OVENS
FR2665249A1 (en) * 1990-07-26 1992-01-31 Dauphine Ets Bonmartin Laminoi Furnace for smelting by induction in a cold crucible
JP3287031B2 (en) * 1991-10-16 2002-05-27 神鋼電機株式会社 Cold wall induction melting crucible furnace
DE4320766C2 (en) * 1993-06-23 2002-06-27 Ald Vacuum Techn Ag Device for melting a solid layer of electrically conductive material
DE4429340C2 (en) * 1994-08-18 2003-04-30 Ald Vacuum Techn Ag Crucibles for inductive melting or overheating of metals, alloys or other electrically conductive materials
DE19622884A1 (en) * 1996-06-07 1997-12-11 Ald Vacuum Techn Gmbh Crucibles for inductive melting or overheating of metals, alloys or other electrically conductive materials
DE19629636A1 (en) * 1996-07-23 1998-01-29 Ald Vacuum Techn Gmbh Induction heating crucible for electrically conductive materials
DE19705458A1 (en) * 1997-02-13 1998-08-20 Leybold Systems Gmbh Crucible for inductive melting or overheating of metals, alloys or other electrically conductive substances
DE19800853A1 (en) * 1998-01-13 1999-07-15 Ald Vacuum Techn Gmbh Closed, evacuable crucible for inductive melting or overheating of metals, alloys or other electrically conductive materials
DE19939772C1 (en) * 1999-08-21 2001-05-03 Schott Glas Skull crucible for melting or refining glasses
DE10133469B4 (en) * 2001-07-10 2004-10-14 Schott Glas Device for melting high-purity optical glasses
DE10236136B4 (en) * 2002-08-07 2005-10-20 Schott Ag High-frequency heated cold crucible for melting a mixture for the production of glass
ES2602702T3 (en) * 2004-01-16 2017-02-22 Consarc Corporation Cold crucible induction furnace
US20100315161A1 (en) * 2009-06-16 2010-12-16 Advanced Energy Industries, Inc. Power Inductor
KR101218923B1 (en) 2010-09-15 2013-01-04 한국수력원자력 주식회사 Cold Crucible Induction Melter Using United Inductor and Crucible
PL224286B1 (en) 2011-08-17 2016-12-30 Polycor Spółka Z Ograniczoną Odpowiedzialnością Method of synthesis of raw material of corundum in the form of polycrystalline block for growing crystals of sapphire and a device for implementing this method
CN107062904B (en) * 2017-04-18 2018-12-28 胡光雄 A kind of indirect roaster of carbide slag
CN107324816A (en) * 2017-07-25 2017-11-07 云南省科学技术院 Preparation method and preparation equipment of high-temperature-resistant high-purity alumina cotton

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DE381263C (en) * 1920-09-23 1923-09-18 Vacuumschmelze Gmbh Process for melting down cold, lumpy scrap in induction furnaces
DE457816C (en) * 1925-02-28 1928-03-23 Heraeus Vacuumschmelze Akt Ges Process for melting cold insert in induction furnaces
US1801791A (en) * 1930-03-05 1931-04-21 Westinghouse Electric & Mfg Co Induction-furnace protective circuits
US1975438A (en) * 1931-09-09 1934-10-02 Ugine Infra Magnetic muffle or other body and method of varying the magnetic transformation thereof
DE1017795B (en) * 1954-05-25 1957-10-17 Siemens Ag Process for the production of the purest crystalline substances, preferably semiconductor substances
US2743199A (en) * 1955-03-30 1956-04-24 Westinghouse Electric Corp Process of zone refining an elongated body of metal
NL112552C (en) * 1957-04-15 1900-01-01
US3223519A (en) * 1957-05-20 1965-12-14 Nat Distillers Chem Corp Induction furnace
DE1208429B (en) * 1960-10-21 1966-01-05 Heraeus Gmbh W C Vacuum induction melting furnace

Also Published As

Publication number Publication date
CH472166A (en) 1969-04-30
NL162285C (en) 1980-04-15
SE335392B (en) 1971-05-24
IL27699A (en) 1970-08-19
DE1615195B1 (en) 1970-12-17
BR6788201D0 (en) 1973-12-27
ES338865A1 (en) 1968-04-16
NL162285B (en) 1979-11-15
BE696062A (en) 1967-09-01
LU53351A1 (en) 1967-06-05
US3461215A (en) 1969-08-12
NL6704751A (en) 1967-10-06
FR1492063A (en) 1967-08-18

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