EP2859293B1 - Four à arc - Google Patents

Four à arc Download PDF

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Publication number
EP2859293B1
EP2859293B1 EP13729678.6A EP13729678A EP2859293B1 EP 2859293 B1 EP2859293 B1 EP 2859293B1 EP 13729678 A EP13729678 A EP 13729678A EP 2859293 B1 EP2859293 B1 EP 2859293B1
Authority
EP
European Patent Office
Prior art keywords
furnace
lid
furnace vessel
vessel
vertical direction
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.)
Active
Application number
EP13729678.6A
Other languages
German (de)
English (en)
Other versions
EP2859293A1 (fr
Inventor
Björn Mossmann
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.)
Primetals Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria GmbH
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 Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP13729678.6A priority Critical patent/EP2859293B1/fr
Publication of EP2859293A1 publication Critical patent/EP2859293A1/fr
Application granted granted Critical
Publication of EP2859293B1 publication Critical patent/EP2859293B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/02—Crucible or pot furnaces with tilting or rocking arrangements
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/10—Crucibles
    • F27B14/12—Covers therefor
    • 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
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • 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
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids, removable covers
    • F27D1/1808—Removable covers
    • F27D1/1816—Removable covers specially adapted for arc furnaces
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B2014/0825—Crucible or pot support
    • F27B2014/0831—Support or means for the transport of crucibles
    • 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
    • F27B3/12—Working chambers or casings; Supports therefor
    • F27B3/16—Walls; Roofs
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids, removable covers

Definitions

  • the invention relates to an electric arc furnace.
  • an arc furnace for melting the steel and a lid for closing the furnace vessel during the melting process.
  • the lid is connected via a pivot cylinder with a pivoting unit, also referred to as a portal. By means of the pivot cylinder, the lid is first lifted, so that it dissolves from the furnace vessel. Thereafter, it can be pivoted laterally away from the furnace vessel by means of the pivoting unit.
  • the furnace vessel For emptying the liquid steel from the furnace vessel this is tilted about an axis perpendicular to the longitudinal axis of the furnace axis.
  • the furnace vessel is mounted on a cradle which comprises a rolling path provided for this tilting movement. In such a tilting movement and the pivot unit is tilted with the lid.
  • the electric arc furnace comprises a furnace vessel for melting steel, a lid for closing the furnace vessel and a pivoting unit with which the lid of the Oven vessel is moved away. Furthermore, the furnace vessel is mounted movable relative to the pivoting unit in the vertical direction. In addition, the pivot unit has a receptacle for releasably fixing the lid in the vertical direction.
  • the electric arc furnace according to the invention thus differs from an electric arc furnace known from the prior art in that the furnace vessel is mounted so as to be movable relative to the pivoting unit in the vertical direction and the cover is detachably fixable in a receptacle of the pivoting unit, ie not firmly connected to the pivoting unit.
  • the cover In a position in which the melting operation takes place, the cover is arranged above the furnace vessel, so that it is closed. In this case, the lid is not in engagement with the pivot unit and is therefore not connected to this.
  • the swivel unit is therefore free to move during the melting operation without a lid. This simplifies readjustment of the electrodes arranged on the pivoting unit.
  • the fixed pivot unit that when emptying the furnace vessel and the associated tilting movement of the furnace vessel, the lid and the pivoting unit do not tilt with the furnace vessel, so that a parting with simultaneous power supply to the furnace or to the electrodes is possible, which an increase in the time of total energy input and thus higher productivity.
  • This is achieved by making it possible to work the electrode control when the cover remains in a horizontal position.
  • the furnace vessel is mounted in a movable cradle in the vertical direction.
  • a cradle can preferably be moved by means of hydraulic cylinders.
  • the hydraulic cylinders By operating the hydraulic cylinders, the cradle and the oven vessel stored therein are moved vertically downwards or upwards.
  • the cradle has a plurality of separately controllable hydraulic cylinder, it can not only be moved in a vertical direction up and down but also tilted to empty the furnace vessel.
  • the lid when closing the furnace vessel is supported by means arranged on the cradle supports. In a vertical movement of the cradle with the supports and thus also of the furnace vessel down so after the fixation of the lid in the receptacle of the pivoting unit, the lid is also released from the supports.
  • the lid is moved away by means of the pivoting unit by a rotational movement about an axis extending in the vertical direction of the furnace vessel. The lid is thereby moved away from the furnace vessel in the horizontal direction.
  • Fig. 1 an arc furnace 2 is shown having a furnace vessel 4 for melting steel and a lid 6 for closing the furnace vessel.
  • the lid 6 is in a position in which it closes the oven vessel 4, as is the case during the melting operation of steel.
  • the furnace vessel 4 is mounted on a cradle 8, which has a plurality of separately controllable hydraulic cylinders 10.
  • the hydraulic cylinders 10 are in Fig. 1 shown in its extended position.
  • the cradle 8 is thus movable in the vertical direction downwards or upwards, whereby the furnace vessel 4 is movable in the corresponding direction.
  • the lid 6 of the arc furnace 2 in the closed state of the furnace vessel 4, as in Fig. 1 is supported.
  • a portal pivot unit 14 is also fixed, which only is mounted rotatably about its axis A.
  • the pivoting unit 14 serves to move the lid 6 away from the oven vessel 4.
  • the pivoting unit 14 also has a receptacle 16 in which the lid can be fixed in the vertical direction.
  • the receptacle 16 is formed in the embodiment shown by a support surface and a pin, in which a correspondingly shaped connection unit 18 of the lid can engage.
  • the lid 6 by means of the pivoting unit 14 by a rotational movement about the in the vertical direction extending axis A are moved away from the furnace vessel 4, as in Fig. 3 is shown.
  • the furnace vessel 4 in the open state and can be charged, for example, with scrap.
  • the lid 6 is in this situation laterally of the furnace vessel. 4
  • the lid 6 can then be moved back to the furnace vessel 4, so that in turn the in Fig. 2 shown situation is reached, in which the lid 6 is again arranged above the furnace vessel 4. Subsequently, when the cradle 4 is moved upwardly in the vertical direction by means of the hydraulic cylinders 10, the cover 6 is lifted out of the receptacle 14 of the pivoting unit 16, thereby releasing the fixing in the vertical direction. The cover 6 is then supported again on the supports 12, as it is in Fig. 1 is shown.
  • the inventive design of the arc furnace 2 is thus a pivot cylinder, as it is required in an arc furnace known from the prior art, unnecessary. As a result, fewer components are needed and the opening process of the furnace vessel 4 is simplified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Claims (6)

  1. Four à arc (2) avec une carcasse de four (4) pour faire fondre de l'acier, un couvercle (6) pour fermer la carcasse de four (4) et une unité pivotante (14) avec laquelle le couvercle (6) peut être éloigné de la carcasse de four (4), avec la configuration suivante :
    a) la carcasse de four (4) est montée de manière mobile par rapport à l'unité pivotante (14) dans la direction verticale,
    b) l'unité pivotante (14) présente un logement pour fixer de manière amovible le couvercle (6) dans la direction verticale.
  2. Four à arc (2) selon la revendication 1,
    dans lequel la carcasse de four (4) est montée dans un berceau (8) mobile dans la direction verticale.
  3. Four à arc (2) selon la revendication 2,
    dans lequel le berceau (8) est mobile au moyen d'un vérin hydraulique (10).
  4. Four à arc (2) selon la revendication 3,
    dans lequel le berceau (8) présente plusieurs vérins hydrauliques (10) qui peuvent être commandés séparément.
  5. Four à arc (2) selon l'une des revendications 2 à 4,
    dans lequel le couvercle (6) lors de la fermeture de la carcasse de four (4) prend appui sur des montants (12) disposés sur le berceau (8).
  6. Four à arc (2) selon l'une des revendications précédentes,
    dans lequel le couvercle (6) peut être éloigné de la carcasse de four (4) au moyen de l'unité pivotante (14) par le biais d'un mouvement de rotation autour d'un axe (A) qui s'étend dans la direction verticale.
EP13729678.6A 2012-07-11 2013-06-12 Four à arc Active EP2859293B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13729678.6A EP2859293B1 (fr) 2012-07-11 2013-06-12 Four à arc

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12175917.9A EP2685192A1 (fr) 2012-07-11 2012-07-11 Four à arc
EP13729678.6A EP2859293B1 (fr) 2012-07-11 2013-06-12 Four à arc
PCT/EP2013/062089 WO2014009085A1 (fr) 2012-07-11 2013-06-12 Four à arc

Publications (2)

Publication Number Publication Date
EP2859293A1 EP2859293A1 (fr) 2015-04-15
EP2859293B1 true EP2859293B1 (fr) 2016-08-10

Family

ID=48652041

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12175917.9A Withdrawn EP2685192A1 (fr) 2012-07-11 2012-07-11 Four à arc
EP13729678.6A Active EP2859293B1 (fr) 2012-07-11 2013-06-12 Four à arc

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12175917.9A Withdrawn EP2685192A1 (fr) 2012-07-11 2012-07-11 Four à arc

Country Status (7)

Country Link
US (1) US9657994B2 (fr)
EP (2) EP2685192A1 (fr)
CN (1) CN104428616B (fr)
ES (1) ES2602906T3 (fr)
MX (1) MX2015000399A (fr)
RU (1) RU2636793C2 (fr)
WO (1) WO2014009085A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106524767B (zh) * 2016-12-30 2018-08-03 中冶赛迪工程技术股份有限公司 一种废钢预热型电弧炉的开盖结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067984B (fr) * 1959-10-29
GB102365A (en) * 1916-06-22 1916-11-30 James Keith Improvements in Lids or Covers for Crucible Furnaces.
US2313837A (en) * 1940-03-26 1943-03-16 Nissim Raoul Electric arc furnace with removable hearth or roof
US4123617A (en) * 1977-05-04 1978-10-31 Lectromelt Corporation Electric arc furnace
AT371921B (de) * 1981-10-09 1983-08-10 Voest Alpine Ag Elektroofen
DE3514293A1 (de) * 1985-04-19 1986-10-30 Fuchs Systemtechnik GmbH, 7601 Willstätt Hub- und schwenkvorrichtung fuer den deckel des ofengefaesses eines lichtbogenofens
AT387350B (de) * 1987-05-15 1989-01-10 Voest Alpine Ag Elektroofen, wie lichtbogenofen oder plasmaofen
CA2028108C (fr) * 1989-03-02 1994-12-06 Joachim Ehle Fonderie equipee d'un prechauffeur de type a arbre pour matieres chargees
AT401304B (de) * 1993-11-04 1996-08-26 Voest Alpine Ind Anlagen Deckelhubwerk für einen auf ein metallurgisches gefäss aufsetzbaren deckel
DE102006041421A1 (de) * 2006-09-04 2008-03-06 Fuchs Technology Ag Schmelzofen, insbesondere Lichtbogenofen
DE102010041692A1 (de) * 2010-09-30 2012-04-05 Siemens Aktiengesellschaft Hub- und Schwenkvorrichtung für einen Deckel eines Ofens sowie Ofenanlage und Verfahren zum Chargieren und zur Wartung einer solchen Ofenanlage

Also Published As

Publication number Publication date
ES2602906T3 (es) 2017-02-22
RU2636793C2 (ru) 2017-11-28
MX2015000399A (es) 2015-03-20
RU2015104340A (ru) 2016-08-27
WO2014009085A1 (fr) 2014-01-16
US9657994B2 (en) 2017-05-23
EP2859293A1 (fr) 2015-04-15
CN104428616A (zh) 2015-03-18
CN104428616B (zh) 2016-04-13
US20150139266A1 (en) 2015-05-21
EP2685192A1 (fr) 2014-01-15

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