EP2859293A1 - Four à arc - Google Patents

Four à arc

Info

Publication number
EP2859293A1
EP2859293A1 EP13729678.6A EP13729678A EP2859293A1 EP 2859293 A1 EP2859293 A1 EP 2859293A1 EP 13729678 A EP13729678 A EP 13729678A EP 2859293 A1 EP2859293 A1 EP 2859293A1
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.)
Granted
Application number
EP13729678.6A
Other languages
German (de)
English (en)
Other versions
EP2859293B1 (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 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

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
    • 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

  • Such an arc furnace comprises a furnace vessel for melting the steel and a lid for closing the furnace vessel during the melting process. For charging the furnace with scrap and for its maintenance, it is necessary to open the furnace vessel and therefore the
  • the lid is connected via a pivot cylinder with a pivoting unit, also referred to as a portal.
  • a pivoting unit also referred to as a portal.
  • 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 stored on a cradle which comprises a rolling track provided for this tilting movement.
  • 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, re ⁇ stored the furnace vessel tively to the swivel unit in the vertical direction movable.
  • 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 makes it easier to readjust the electrodes arranged on the pivoting unit.
  • the cover In order to release the cover of the arc furnace from the furnace vessel, the cover is then suspended in the receptacle of the pivoting unit initially by a movement of the furnace vessel relative to the stationary pivoting unit in the vertical direction, so that the cover is fixed in the vertical direction. After hanging a further movement of the Ofenge ⁇ vessel takes place in the vertical direction downwards, so that the lid is detached from the furnace vessel and then can be moved away from the furnace vessel.
  • the inventive design of the arc furnace in particular by the movable in the vertical direction ⁇ tion of the furnace vessel with lid is thus achieved that can be dispensed with the pivot cylinder.
  • This results in a saving of required components and the complex processing of Deckelhubwerks.
  • it is ⁇ sufficient by 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 results in an increase in the time of total energy input and thereby higher productivity. This is achieved by the fact that
  • 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 several separately controllable Hydraulikzylin- this can not only be moved in the 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 verti ⁇ len movement of the cradle with the supports and thus also the furnace vessel down so after fixing the
  • Lid in the receptacle of the pivot unit of the lid also released from the supports.
  • the cover is moved away by means of the pivoting unit by a Rota ⁇ tion movement about an axis extending in the vertical direction of the furnace vessel.
  • the lid is therefore characterized moved in the horizontal direction since ⁇ Lich from the furnace vessel.
  • Fig. 1 shows an electric arc furnace with a lid in one position
  • FIG. 2 shows an arc furnace with cover which is fixed on the pivoting unit
  • Fig. 3 shows an electric arc furnace with the lid open.
  • an arc furnace 2 is shown, which has 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 several ⁇ re separately controllable hydraulic cylinder 10 has.
  • the hydraulic cylinders 10 are shown in Fig. 1 in its extended position. By a stroke of the hydraulic cylinder 10, the cradle 8 is thus movable in the vertical direction downwards or upwards, whereby the furnace vessel 4 is movable in the corresponding direction.
  • At the cradle 8 more supports 12 are further arranged, which support the lid 6 of the arc furnace 2 in the closed state of the furnace vessel 4, as shown in Fig. 1, supported.
  • a portal designated ⁇ designated swing unit 14 is further arranged in a fixed, the 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 shown embodiment by an on ⁇ bearing surface and a pin, in which a entspre ⁇ accordingly shaped connection unit 18 of the lid eingrei ⁇ fen can.
  • This is moved relative to the vertically fixed pivot unit 14 in the vertical direction downwards. This is realized by moving the hydraulic cylinders 10 into a retracted state and thereby moving the cradle 8 downwards in the vertical direction, that is, lowering it.
  • the oven vessel 4 and the lid 6 is moved down with the cradle 8.
  • the lid 6 is then moved until the connecting member 18 in the up ⁇ receiver 16 of the pivot unit 14 comes into engagement, and thus the de ekel 6 in the pivot unit 14 is mounted.
  • the connecting member 18 comes on the Recordin ⁇ me Chemistry to rest, a further movement of the cover 6 in the vertical direction is thus no longer possible, since the cover 6 is fixed so that in the vertical direction.
  • the lid 6 is also additionally fixed in the horizontal direction, so that only a rotational movement of the lid 6 is possible.
  • 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 shown in Fig. 3.
  • 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 be moved towards the furnace vessel 4 again, so that again the situation illustrated in FIG. 2 is reached, in which the cover 6 is positioned again above the Ofenge ⁇ fäßes 4. Subsequently, when the cradle 4 is moved by means of the hydraulic cylinder 10 in a vertically upward direction, while the lid is dissolved lifted out of the receptacle 14 of the pivot unit 16 and 6 so that the fixing in Vertika ⁇ ler direction. The cover 6 is then supported again on the supports 12, as shown in Fig. 1.

Landscapes

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

Abstract

La présente invention concerne un four à arc (2) comportant une carcasse (4) servant à faire fondre de l'acier, un couvercle (6) servant à fermer la carcasse (4) et une unité pivotante (14) grâce à laquelle le couvercle (6) peut être éloigné de la carcasse (4). L'invention est caractérisée en ce que a) la carcasse (4) est positionnée de manière à pouvoir se déplacer dans une direction verticale par rapport à l'unité pivotante (14) et b) l'unité pivotante (14) comporte un logement servant à fixer de manière libérable le couvercle (6) dans une 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 true EP2859293A1 (fr) 2015-04-15
EP2859293B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014009085A1 *

Also Published As

Publication number Publication date
EP2685192A1 (fr) 2014-01-15
WO2014009085A1 (fr) 2014-01-16
EP2859293B1 (fr) 2016-08-10
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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