US3835232A - Charging means - Google Patents

Charging means Download PDF

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Publication number
US3835232A
US3835232A US00308712A US30871272A US3835232A US 3835232 A US3835232 A US 3835232A US 00308712 A US00308712 A US 00308712A US 30871272 A US30871272 A US 30871272A US 3835232 A US3835232 A US 3835232A
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US
United States
Prior art keywords
furnace
electrode
roof
tube
arms
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 - Lifetime
Application number
US00308712A
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English (en)
Inventor
J Marchner
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
Application granted granted Critical
Publication of US3835232A publication Critical patent/US3835232A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/18—Arrangements of devices for charging
    • F27B3/183—Charging of arc furnaces vertically through the roof, e.g. in three points
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier

Definitions

  • ABSTRACT A tilting arc furnace has a roof through which liftable electrodes are passed and to which furnace material charging tubes are applied, both the electrodes and the charging tubes requiring to be removed free from the roof to permit tilting of the furnace.
  • the electrodes have'lifting arms and the tubes pass through the arms and above the arms have carriers which during the lifting action of the arms, are engaged by the arms so that the tubes are simultaneously lifted, both the electrodes and tubes lifting free from the furnace roof for tilting of the furnace.
  • the present invention relates to a means a tilting arc furnace via its roof.
  • the invention aims at a solution to this and other related problems and is characterized in that a number of vertical and linear liftable charging tubes for pellets, charging materials, alloying elements or the like are drawn or arranged from above the furnace roof to the charge, suitably one tube per electric phase, which tubes are passed through the furnace roof or to charging openings in said roof, and eachtube is vertically lifted and lowered by oneelectrode when the latter is raised and lowered, respectively, as required for furnace tilting operations.
  • FIG. 1 is an elevation view
  • FIG. 2 shows the same furnace in cross section taken on the line 2-2 in FIG. 1.
  • FIG. 3 shows an enlargement of details in FIG. 1.
  • FIGS. 1 and 2 show an arc furnace having three vertically movable electrodes 11, 12 and 13, drawn through a liftable and lowerable furnace roof 14.
  • the electrodes are attached to and liftable by electrode arms 15, 16, 17 in the usual manner, said electrode arms being operated by means of hydraulic or electrical drive means (not shown), and the vertical electrode masts M which slidably support the electrode arms are in the shown case attached to the roof R above the furnace, or in some other foundation close to this same location.
  • One or more carriers 22, 23, are applied on each for charging tube, and when the electrode arm 16 is lifted far enough to lift the electrode 12 from the furnace roof (see also FIG. 3), this arm engages the carrier 22 which with the tube to which it is attached is also lifted up from the furnace roof 14, either from a position where it has been passed down through the roof, or from a position where it was connected to a stud passage 24 at the roof.
  • the tubes are simultaneously removed from the roof and do not impede the tilting.
  • Screens 25, 26, 27 are arranged close by the electrodes so that in the event one electrode is drawn up but not the other, the cable C and other parts of the last-mentioned electrode are protected from radiation heat damage caused by the electrode drawn up which is, of course, very hot.
  • the arms 15-16 remain free from the tube carriers 2223, so the tubes remain in their correct charging positions, for example resting on and in connection with one of the stud passages 24 shown in FIG. 3, via the lower end of the tube involved.
  • the electrode arms lift the electrodes free from the furnace roof 14 for furnace tilting, the arms engage and lift the carriers so that the charging tubes are also lifted free from the furnace roof.
  • the electrode arms again lower the electrodes, the tubes are returned to their connection with the furnace roof.
  • a tilting arc furnace having a roof, at least one electrode liftably passed through said roof, a lifting electrode arm for lifting said electrode free from said roof to permit the furnace to tilt, and a furnace material charging tube connecting with said roof and requiring removal to permit the furnace to tilt; wherein the improvement comprises means for connecting said tube with said arm so that when the latter lifts said electrode free from said roof it also lifts said tube free from said roof to permit said furnace to tilt.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
US00308712A 1971-12-01 1972-11-22 Charging means Expired - Lifetime US3835232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15362/71A SE360463B (xx) 1971-12-01 1971-12-01

Publications (1)

Publication Number Publication Date
US3835232A true US3835232A (en) 1974-09-10

Family

ID=20300538

Family Applications (1)

Application Number Title Priority Date Filing Date
US00308712A Expired - Lifetime US3835232A (en) 1971-12-01 1972-11-22 Charging means

Country Status (6)

Country Link
US (1) US3835232A (xx)
JP (1) JPS4865103A (xx)
CA (1) CA993486A (xx)
DE (1) DE2257806A1 (xx)
GB (1) GB1403379A (xx)
SE (1) SE360463B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504663A1 (fr) * 1981-04-27 1982-10-29 Elkem As Procede et appareil de chargement d'un four
US4534470A (en) * 1982-09-30 1985-08-13 Mills George A Apparatus and method for processing fruit and the like
US5715273A (en) * 1995-04-14 1998-02-03 Danieli & C. Officine Meccaniche Spa Secondary circuit with variable impedance for electric arc furnaces

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921702C2 (de) * 1979-05-29 1983-10-27 Mannesmann AG, 4000 Düsseldorf Elektro-Metallschmelzofen mit Bodenabstich
DE3107016C2 (de) * 1981-02-25 1983-09-08 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Lichtbogenofenanlage zum Erschmelzen von Eisenträgerstoffen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426643A (en) * 1944-05-08 1947-09-02 Norton Co Method and apparatus for fusing refractory materials
US2579885A (en) * 1948-12-04 1951-12-25 Norton Co Pouring arc furnace
US3472649A (en) * 1965-09-03 1969-10-14 Canada Steel Co Electric-arc steelmaking

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426643A (en) * 1944-05-08 1947-09-02 Norton Co Method and apparatus for fusing refractory materials
US2579885A (en) * 1948-12-04 1951-12-25 Norton Co Pouring arc furnace
US3472649A (en) * 1965-09-03 1969-10-14 Canada Steel Co Electric-arc steelmaking

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504663A1 (fr) * 1981-04-27 1982-10-29 Elkem As Procede et appareil de chargement d'un four
US4534470A (en) * 1982-09-30 1985-08-13 Mills George A Apparatus and method for processing fruit and the like
US5715273A (en) * 1995-04-14 1998-02-03 Danieli & C. Officine Meccaniche Spa Secondary circuit with variable impedance for electric arc furnaces

Also Published As

Publication number Publication date
JPS4865103A (xx) 1973-09-08
CA993486A (en) 1976-07-20
DE2257806A1 (de) 1973-06-07
SE360463B (xx) 1973-09-24
GB1403379A (en) 1975-08-28

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