EP2685192A1 - Lichtbogenofen - Google Patents

Lichtbogenofen Download PDF

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Publication number
EP2685192A1
EP2685192A1 EP12175917.9A EP12175917A EP2685192A1 EP 2685192 A1 EP2685192 A1 EP 2685192A1 EP 12175917 A EP12175917 A EP 12175917A EP 2685192 A1 EP2685192 A1 EP 2685192A1
Authority
EP
European Patent Office
Prior art keywords
lid
furnace
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.)
Withdrawn
Application number
EP12175917.9A
Other languages
German (de)
English (en)
French (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
SIEMENS VAI METALS TECHNOLOGIES GmbH
Siemens VAI Metals Technologies GmbH Austria
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 SIEMENS VAI METALS TECHNOLOGIES GmbH, Siemens VAI Metals Technologies GmbH Austria filed Critical SIEMENS VAI METALS TECHNOLOGIES GmbH
Priority to EP12175917.9A priority Critical patent/EP2685192A1/de
Priority to EP13729678.6A priority patent/EP2859293B1/de
Priority to US14/413,639 priority patent/US9657994B2/en
Priority to MX2015000399A priority patent/MX2015000399A/es
Priority to RU2015104340A priority patent/RU2636793C2/ru
Priority to PCT/EP2013/062089 priority patent/WO2014009085A1/de
Priority to CN201380036349.4A priority patent/CN104428616B/zh
Priority to ES13729678.6T priority patent/ES2602906T3/es
Publication of EP2685192A1 publication Critical patent/EP2685192A1/de
Withdrawn legal-status Critical Current

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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 the reprocessing of steel scrap, electric arc furnaces are used in which the steel scrap is heated by means of an electrode and a burning arc and finally melted.
  • Such an arc furnace comprises a furnace vessel for melting the steel and a lid for closing the furnace vessel during the melting process.
  • the lid For charging the furnace with scrap and for its maintenance, it is necessary to open the furnace vessel and therefore open the lid.
  • 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 fixedly 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 a known from the prior art electric arc furnace dispensable. 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)
EP12175917.9A 2012-07-11 2012-07-11 Lichtbogenofen Withdrawn EP2685192A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP12175917.9A EP2685192A1 (de) 2012-07-11 2012-07-11 Lichtbogenofen
EP13729678.6A EP2859293B1 (de) 2012-07-11 2013-06-12 Lichtbogenofen
US14/413,639 US9657994B2 (en) 2012-07-11 2013-06-12 Arc furnace
MX2015000399A MX2015000399A (es) 2012-07-11 2013-06-12 Horno de arco electrico.
RU2015104340A RU2636793C2 (ru) 2012-07-11 2013-06-12 Дуговая печь
PCT/EP2013/062089 WO2014009085A1 (de) 2012-07-11 2013-06-12 Lichtbogenofen
CN201380036349.4A CN104428616B (zh) 2012-07-11 2013-06-12 电弧炉
ES13729678.6T ES2602906T3 (es) 2012-07-11 2013-06-12 Horno de arco eléctrico

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12175917.9A EP2685192A1 (de) 2012-07-11 2012-07-11 Lichtbogenofen

Publications (1)

Publication Number Publication Date
EP2685192A1 true EP2685192A1 (de) 2014-01-15

Family

ID=48652041

Family Applications (2)

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

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13729678.6A Active EP2859293B1 (de) 2012-07-11 2013-06-12 Lichtbogenofen

Country Status (7)

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

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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203339A2 (de) * 1985-04-19 1986-12-03 Fuchs Systemtechnik GmbH Hub- und Schwenkvorrichtung für den Deckel des Ofengefässes eines Lichtbogenofens
EP0385434B1 (de) * 1989-03-02 1993-05-12 Fuchs Technology AG Einschmelzaggregat mit schachtförmigem Chargiergutvorwärmer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067984B (zh) * 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
AT387350B (de) * 1987-05-15 1989-01-10 Voest Alpine Ag Elektroofen, wie lichtbogenofen oder plasmaofen
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203339A2 (de) * 1985-04-19 1986-12-03 Fuchs Systemtechnik GmbH Hub- und Schwenkvorrichtung für den Deckel des Ofengefässes eines Lichtbogenofens
EP0385434B1 (de) * 1989-03-02 1993-05-12 Fuchs Technology AG Einschmelzaggregat mit schachtförmigem Chargiergutvorwärmer

Also Published As

Publication number Publication date
WO2014009085A1 (de) 2014-01-16
EP2859293B1 (de) 2016-08-10
EP2859293A1 (de) 2015-04-15
US20150139266A1 (en) 2015-05-21
CN104428616A (zh) 2015-03-18
CN104428616B (zh) 2016-04-13
US9657994B2 (en) 2017-05-23
RU2636793C2 (ru) 2017-11-28
ES2602906T3 (es) 2017-02-22
MX2015000399A (es) 2015-03-20
RU2015104340A (ru) 2016-08-27

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