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GB613949A - Improvements relating to closed electric furnaces - Google Patents

Improvements relating to closed electric furnaces

Info

Publication number
GB613949A
GB613949A GB8804/46A GB880446A GB613949A GB 613949 A GB613949 A GB 613949A GB 8804/46 A GB8804/46 A GB 8804/46A GB 880446 A GB880446 A GB 880446A GB 613949 A GB613949 A GB 613949A
Authority
GB
United Kingdom
Prior art keywords
shafts
gas
water
cooled
electrode
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
GB8804/46A
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.)
Det Norske Aktieselskap for Elektrokemisk Industri
Original Assignee
Det Norske Aktieselskap for Elektrokemisk Industri
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 Det Norske Aktieselskap for Elektrokemisk Industri filed Critical Det Norske Aktieselskap for Elektrokemisk Industri
Publication of GB613949A publication Critical patent/GB613949A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • F27D17/304—Arrangements for extraction or collection of waste gases; Hoods therefor specially adapted for electric arc furnaces
    • 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
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/103—Mountings, supports or terminals with jaws
    • H05B7/105—Mountings, supports or terminals with jaws comprising more than two jaws equally spaced along circumference, e.g. ring holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/60—Heating arrangements wherein the heating current flows through granular powdered or fluid material, e.g. for salt-bath furnace, electrolytic heating
    • 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
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/12—Arrangements for cooling, sealing or protecting electrodes
    • 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
    • H05B7/00—Heating by electric discharge
    • H05B7/18—Heating by arc discharge
    • H05B7/20—Direct heating by arc discharge, i.e. where at least one end of the arc directly acts on the material to be heated, including additional resistance heating by arc current flowing through the material to be heated

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

613,949. Electric furnaces. NORSKE AKTIESELSKAB FOR ELEKTROKEMISK INDUSTRI. March 21, 1946, No. 8804. Convention date, June 16, 1944. [Class 39 (iii)] A closed electric furnace having a water-cooled metallic roof 12, is provided with water-cooled charging shafts 7 disposed around each electrode 1 in a manner providing an annular gas chamber between each electrode 1 and its surrounding shafts 7. The upper limit of each gas chamber may comprise a vertically adjustable electrode contact arrangement ror varying the gas chamber volume whilst the inner wall of the shafts 7 may also be vertically adjustable for the same purpose. The lower edge of the shafts 7 are shaped such that the charge is disposed in the most favourable manner. Radial gas conduits 11, between the shafts 7, permit the escape of gas from the gas chambers to exit pipes 13. The gas conduits 11 are provided with upper inspection doors 15 constructed as explosion valves. The water-cooled roof 12, which may be of interchangeable sections magnetically and electrically insulated from each other, is suspended from rods 14. Specification 608,743 and French Specification 809,929 are referred to.
GB8804/46A 1944-06-16 1946-03-21 Improvements relating to closed electric furnaces Expired GB613949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO254393X 1944-06-16

Publications (1)

Publication Number Publication Date
GB613949A true GB613949A (en) 1948-12-07

Family

ID=19905021

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8804/46A Expired GB613949A (en) 1944-06-16 1946-03-21 Improvements relating to closed electric furnaces

Country Status (6)

Country Link
US (1) US2592517A (en)
AT (1) AT164253B (en)
CH (1) CH254393A (en)
DE (1) DE824813C (en)
ES (1) ES172689A1 (en)
GB (1) GB613949A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1019831B (en) * 1951-01-15 1957-11-21 Elektrokemisk As Process for the implementation of thermal reduction processes in electric melting furnaces
FR1066070A (en) * 1951-02-15 1954-06-02 Elektrokemisk As Electrode holder for melting furnaces
US2694097A (en) * 1952-06-21 1954-11-09 Elektrokemisk As Electric smelting equipment and method of using same
US2795636A (en) * 1955-06-15 1957-06-11 Ici Ltd Arc-melting furnaces
US2942044A (en) * 1958-02-27 1960-06-21 Gen Electric Electric arc furnace
DE1093927B (en) * 1959-07-18 1960-12-01 Heraeus Gmbh W C Holder for furnace electrodes
US3046319A (en) * 1960-01-20 1962-07-24 Allegheny Ludlum Steel Electrode stub clamp
US3457355A (en) * 1967-09-19 1969-07-22 Vitro Corp Of America Brush electrode assembly for consumable electrodes
US3715200A (en) * 1969-02-17 1973-02-06 Falconbridge Nickel Mines Ltd Electric arc furnace operation
CA1105972A (en) * 1979-02-16 1981-07-28 James H. Corrigan Electric arc furnace operation
DE3017939C2 (en) * 1980-05-10 1983-01-27 Mannesmann AG, 4000 Düsseldorf Partially closed electric reduction furnace
ES8501874A1 (en) * 1982-08-26 1984-12-16 Arc Tech Syst Ltd Clamping assembly for arc furnace electrodes.
DE102006000737A1 (en) * 2006-01-04 2007-07-05 Sms Demag Ag Device for adjusting an electrode in a metallurgical furnace comprises a clamping ring and a holding ring mounted in the furnace roof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US826742A (en) * 1903-10-13 1906-07-24 Union Carbide Corp Process of reducing metallic compounds and producing carbids.
US842099A (en) * 1904-09-21 1907-01-22 American Phosphorous Company Electric melting or reducing furnace.
US1223278A (en) * 1914-06-05 1917-04-17 Union Carbide Corp Multiple-hearth electric furnace.
US1496232A (en) * 1922-04-03 1924-06-03 Fed Phosphorus Co Stock feeding and distributing apparatus for electrical furnaces
US2286732A (en) * 1941-03-20 1942-06-16 Joseph A Hardin Electric furnace

Also Published As

Publication number Publication date
US2592517A (en) 1952-04-08
CH254393A (en) 1948-04-30
ES172689A1 (en) 1946-04-01
AT164253B (en) 1949-10-25
DE824813C (en) 1951-12-13

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