GB1506020A - Direct current arc furnace - Google Patents

Direct current arc furnace

Info

Publication number
GB1506020A
GB1506020A GB30584/75A GB3058475A GB1506020A GB 1506020 A GB1506020 A GB 1506020A GB 30584/75 A GB30584/75 A GB 30584/75A GB 3058475 A GB3058475 A GB 3058475A GB 1506020 A GB1506020 A GB 1506020A
Authority
GB
United Kingdom
Prior art keywords
coils
phase
electrode
fed
direct current
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
GB30584/75A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of GB1506020A publication Critical patent/GB1506020A/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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5229—Manufacture of steel in electric furnaces in a direct current [DC] electric arc furnace
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Discharge Heating (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

1506020 Electric arc furnaces ASEA AB 22 July 1975 [23 July 1974] 30584/75 Heading H5H In operating a direct arc furnace having an electrode 3 with a through channel, rotation of direct current arc 17 is effected by the magnetic fields from coils 8, 10, Fig. 1, and 11, Fig. 6 energized by alternating current. The necessary rotating magnetic field is obtained with either a two phase or asymmetrical three phase supply. A furnace may have two or four coils 10 fed with 2-phase A.C. in the roof and three coils 8 in the walls and symmetrically arranged with respect to the electrode 3, but one of the 3-phase fed coils must be so connected or wound as to produce the required asymmetric field. These coils 8, 10 may be reversed in position. Alternatively coils 11, Fig. 6 may be mounted at the tip of a cooled (by means of channels 12) non consumable electrode. The A.C. supply may be of 50 to 60 Hz. When coils are mounted beneath the vessel they are preferably of lower frequency, e.g. 1 Hz. When 3-phase fed coils are not arranged symmetrically with respect to the arcing electrode, it is not necessary to wind or connect the coils asymmetrically to produce the asymmetric field. Charge material is fed through the channel of electrode 3.
GB30584/75A 1974-07-23 1975-07-22 Direct current arc furnace Expired GB1506020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7409556A SE400013B (en) 1974-07-23 1974-07-23 DEVICE FOR DIRECTION-FEED LIGHT BACK OVEN

Publications (1)

Publication Number Publication Date
GB1506020A true GB1506020A (en) 1978-04-05

Family

ID=20321768

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30584/75A Expired GB1506020A (en) 1974-07-23 1975-07-22 Direct current arc furnace

Country Status (5)

Country Link
JP (2) JPS5135607A (en)
DE (1) DE2530740A1 (en)
FR (1) FR2280285A1 (en)
GB (1) GB1506020A (en)
SE (1) SE400013B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000426A1 (en) * 1986-07-04 1988-01-14 Vsesojuzny Nauchno-Issledovatelsky, Proektno-Konst Induction plasma furnace

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT371589B (en) * 1981-07-15 1983-07-11 Voest Alpine Ag PLASMA MELTING OVEN
US4431612A (en) * 1982-06-03 1984-02-14 Electro-Petroleum, Inc. Apparatus for the decomposition of hazardous materials and the like
JPH0792337B2 (en) * 1991-09-05 1995-10-09 株式会社ニッコー DC arc type scrap melting and refining furnace
RU2213792C1 (en) * 2002-04-19 2003-10-10 Бурлов Юрий Александрович Plasma-type reactor-separator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US368309A (en) * 1887-08-16 James b
DE384031C (en) * 1923-10-24 Polysius Fa G Rotating drum heated by means of an electric arc
DE428003C (en) * 1923-02-24 1926-04-20 Georg Ewreinoff Electric furnace with an arc that revolves around the carbon electrode projecting centrally into the crucible under the influence of a magnetic field
US2652440A (en) * 1950-07-18 1953-09-15 Battelle Development Corp Electric arc melting furnace
JPS4419844Y1 (en) * 1967-05-24 1969-08-26
US3530223A (en) * 1969-03-03 1970-09-22 Westinghouse Electric Corp Electrode apparatus for use in an arc electrode furnace and magnetic field coils for moving and focusing the arcs therefrom
US3683094A (en) * 1971-02-18 1972-08-08 Max P Schlienger Arc positioning system for rotating electrode wheel arc furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000426A1 (en) * 1986-07-04 1988-01-14 Vsesojuzny Nauchno-Issledovatelsky, Proektno-Konst Induction plasma furnace

Also Published As

Publication number Publication date
SE400013B (en) 1978-03-06
JPS5752623Y2 (en) 1982-11-15
FR2280285A1 (en) 1976-02-20
DE2530740C2 (en) 1989-03-30
DE2530740A1 (en) 1976-02-12
JPS5135607A (en) 1976-03-26
FR2280285B1 (en) 1980-05-30
JPS55169999U (en) 1980-12-06
SE7409556L (en) 1976-01-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee