DE3232139A1 - Steel melting plant with two furnace vessels - Google Patents

Steel melting plant with two furnace vessels

Info

Publication number
DE3232139A1
DE3232139A1 DE19823232139 DE3232139A DE3232139A1 DE 3232139 A1 DE3232139 A1 DE 3232139A1 DE 19823232139 DE19823232139 DE 19823232139 DE 3232139 A DE3232139 A DE 3232139A DE 3232139 A1 DE3232139 A1 DE 3232139A1
Authority
DE
Germany
Prior art keywords
furnace
vessel
gas
duct
melting
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Withdrawn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
DE19823232139
Other languages
German (de)
Inventor
Gerd Dipl.-Ing. 4155 Grefrath Dikta
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE19823232139 priority Critical patent/DE3232139A1/en
Priority to SE8303974A priority patent/SE8303974L/en
Priority to JP58134232A priority patent/JPS5938582A/en
Priority to IT2230883A priority patent/IT1170185B/en
Priority to ES525153A priority patent/ES525153A0/en
Publication of DE3232139A1 publication Critical patent/DE3232139A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C21C5/5252—Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace
    • 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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C21C5/565—Preheating of scrap
    • 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
    • F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • 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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a steel melting plant having two stationary furnace vessels arranged on a furnace platform, especially for melting scrap, and having interchangeable vessel covers, one of which carries the heating device (electrodes), the melting process taking place alternately in the first or second vessel while the material to be melted is prepared in the other vessel. In order to design a steel melting plant of the type described at the beginning, in such a way that the duct for removal of the exhaust gases does not come into contact with the melt or melt splashes, and in addition opens into the respective other furnace vessel such that the heat of the exhaust gases can be optimally used, it is proposed that a suction bend which can be connected to a gas duct be arranged on each cover, that the gas duct opens in each case into the lower casing region of the other vessel, and a secondary duct leading to a dust removal device be branched from each gas duct, and that a gas shut-off valve be arranged in the gas duct, in the gas flow direction, behind the branch point of the secondary duct and, to prevent charged or molten material leaving the furnace, a closure device be arranged in the opening of the gas duct into the furnace. <IMAGE>

Description

Die Erfindung betrifft eine Stahlschmelzanlage mit zweiThe invention relates to a steel melting plant with two

auf einer Ofenbühne angeordneten feststehenden Ofengefäßen gemäß dem Oberbegriff des Patentanspruchs.Fixed furnace vessels arranged on a furnace platform according to the Generic term of the claim.

Aus der DE-OS 31 O2 499 ist es bekannt in einer Stahlschmelzanlage mit zwei Ofengefäßen zu arbeiten auf die jeweils der die ßlektroden aufnehmende Deckel zum Einschmelzen der Charge aufsetzbar ist. Durch den abwechselnden Betrieb der Gefäße konnte die Leistung der Anlage wesentlich gesteigert werden, weil der jeweils nicht schmelzende Ofen gefüllt werden kann und das eingebrachte Material durch die Restwärme des Gefäßes vorgewärmt wird.From DE-OS 31 O2 499 it is known in a steel melting plant to work with two furnace vessels on the one receiving the electrodes Lid can be put on to melt the batch. Due to the alternating operation of the vessels, the performance of the system could be increased significantly because of the each non-melting furnace can be filled and the material introduced is preheated by the residual heat of the vessel.

Es ist aus der Praxis auch bekannt, zwei Ofengefäße miteinander durch eine Leitung zu verbinden, so daß die beim Schmelzen entstehenden Abgase durch den zweiten Ofen geffihrt werden können bevor sie aus der Anlage entfernt werden. Auf diese Weise wird das zum Schmelzen vorbereitete -in dem zweiten Ofengefäß befindliche-Material stärker erwärmt als dies iiber die Restwärme des Gefäßes möglich ist.It is also known from practice to pass two furnace vessels through one another to connect a line, so that the exhaust gases resulting from the melting through the second furnace can be run before they are removed from the system. on this is how the material prepared for melting - located in the second furnace vessel - becomes warmed up more than is possible via the residual heat of the vessel.

Nachteilig ist dabei aber, daß die die beiden Ofengefäße verbindende Leitung durch die Schmelze bzw. Schmelzenspritzer verstopft oder beschädigt werden kann, wenn sie in einer solchen Höhe in den Ofenmantel mündet, daß noch eine möglichst gute und gleichmäßige Durchgasung des einzuschmelzenden Materials erfolffrt.The disadvantage here is that the one connecting the two furnace vessels The line can be blocked or damaged by the melt or melt splashes can, if it opens into the furnace shell at such a height that one more if possible good and even gas flow through the material to be melted takes place.

Aufgabe der Erfindung ist es, die Stahlschmelzanlage der eingangs genannten Art so auszubilden, daß die heißen Abgase zuführende Leitung so in das jeweils andere Ofengefäß mündet, daß die Wärme der Abgase optimal ausgenützt werden kann, wobei die Gasleitung nicht durch Chargenpartikel oder Schmelzenspritzer zugesetzt werden kann.The object of the invention is the steel melting plant of the opening called type so that the hot exhaust gas supply line in the each other furnace vessel opens so that the heat of the exhaust gases are optimally used can, with the gas line not clogged by batch particles or melt splashes can be.

Gelöst wird diese Aufgabe erfindungsgemäß durch die im Kennzeichen des Patentanspruchs angegebener Merkmale.This object is achieved according to the invention by means of the characteristics of the claim specified features.

Bei der erfindungsgemäßen Anlage erfolgt das Abziehe@ der Gase aus dem OSengefaß durch den Deckel und damit im großen Abstand von der Schmelze.In the case of the system according to the invention, the gases are drawn off the OSengefaß through the lid and thus at a large distance from the melt.

Die Gasleitung mündet andererseits im unteren Mantelbereich in das Ofengefäß, so daß die heißen Gase durch das in diesem Ofengefäß befindliche, einzuschmelzende Material aufsteigen bevor sie der Entstaubungseinrichtung zugeführt werden. Ge.stellert wird der Gasstrom durch entsprechend angeordnete Absperrventile. Der Eintritt von Chargenpartikeln bzw. Schmelzenspritzern in die Einmündung der Gasleitung wird durch i.n der winmiindung angeordnete Verschlußvorrichtungen verhindert.On the other hand, the gas line opens into the lower jacket area Furnace vessel, so that the hot gases through the furnace vessel to be melted Material rise before they are fed to the dedusting device. Set up the gas flow is through appropriately arranged shut-off valves. The entry of Batch particles or melt splashes into the confluence of the gas line are caused by in the winmini arranged locking devices prevented.

Die Erfindung soll nachfolgend anhand einer schematischer dargestellten Schmelzanlage erläutert werden.The invention is to be illustrated in the following on the basis of a schematic Melting plant are explained.

Die Stahlschmelzanlage weist zwei feststehende Ofengefäß 1, 2 auf. Es sei angenommen, daß das in der Zeichnung rechte Ofengefäß 1 schmelzen sol]. Auf das Ofengefäß 1 ist der Deckel 3 mit den Elektroden 5 aufgesetzt. Das andere-Ofengefäß 2 ist von einem einfachen Deckel 4 verschlossen. In ihm befindet sich die nächste Charge (Schrott), die für den Schmelzvorgang vorbereitet werden soll. Die beim Schmelzen im Ofengefäß 1 entstehenden Abgase werden durch den im Deckel 3 befindlichen Absaugkrümmer 6 abgezogen und durch die Leitung 8 in den unteren Mantelbereich des zweiten Ofengefäßes 2 eingeführt. Nachdem Durchtritt durch das in diesem Gefäß befindliche Material wird das Gas durch den Absaugkrümmer 6' im Deckel 4 abgezogen und durch die Mebenleitung 13' der Entstaubungseinrichtung 12' zugeführt.The steel melting plant has two stationary furnace vessels 1, 2. It is assumed that the furnace vessel 1 on the right in the drawing is to melt]. on the furnace vessel 1 the cover 3 with the electrodes 5 is put on. The other furnace vessel 2 is closed by a simple cover 4. Located in it the next batch (scrap) to be prepared for the melting process target. The exhaust gases produced during melting in the furnace vessel 1 are released by the im Cover 3 located suction elbow 6 withdrawn and through the line 8 in the lower The jacket region of the second furnace vessel 2 is introduced. After passing through the Material in this vessel is the gas through the suction elbow 6 'in Cover 4 is pulled off and through the Mebenleitung 13 'of the dedusting device 12' fed.

Beim Schmelzen im Ofengefäß 2 wird das Abgas entsprechend durch die Nebenleitung 13 der Entstaubungseinrichtung 12 zugeSihrt. Absperrventile 10, 11 bzw. lO', 11' geben die jeweiligen Leitungen frei. In der EinmiindunZ der Gasleitung in den unteren Mantelbereich der Ofengefäß sind jeweils Verschlußvorrichtungen 9 bzw. 9' angeordnet, die verhindern, daß Schmelzenpartikel in die Leitungen gelangen und diese verstopfen oder zusetzen.When melting in the furnace vessel 2, the exhaust gas is correspondingly through the Secondary line 13 of the dedusting device 12 is supplied. Shut-off valves 10, 11 or 10 ', 11' release the respective lines. In the middle of the gas pipe Closing devices 9 are in each case in the lower jacket area of the furnace vessel or 9 'arranged to prevent melt particles from getting into the lines and clog or clog them.

L e e r s e i t eL e r s e i t e

Claims (1)

Stahlschmelzanlage mit zwei Ofengefäßen Patentanspruch: Stahlschmelzanlage mit zwei auf einer Ofenbühne angeordneten, feststehenden Ofengefäßen, insbesondere zum Einschmelzen von Schrott, mit wechselbaren Gefäßdeckeln, von denen der eine die Heizeinrichtung (Elektroden) trägt, wobei abwechselnd in dem ersten oder zweiten Gefäß der Schmelzvorgang abläuft, während in dem anderen Gefäß das zu schmelzende Material vorbereitet wird, dadurch gekennzeichnet, daß an jedem Declrel (3,4) ein an eine Gasleitung (8,8') anschließbarer Absaugkriimmer (6,6') angeordnet ist, daß die Gasleitung jeweils in den unteren Mantelbereich des anderen Gefäßes (2,1) mündet, und von jeder Gasleitung eine zu einer Entstaubungseinrichtung (12,12') führende Nebenleitung (13,13') abgezweigt ist, und daß in der Gasleitung (8,8') - in Richtung des Gasstromes gesehen - hinter der Abzweigstelle (14, 14') der Nebenleitung (13, 13') ein Gas-Absperrventil (10.10') und in der Einmündung der Gasleitung (8, 8') in den Ofen (2, 1) eine den Austritt von chargiertem oder geschmolzenem Material aus dem Ofen verhindernde, eins während der Vorhei.7-phase geöffnete Verschlußvorrichtung (9, 9') angeordnet ist. Steel melting plant with two furnace vessels Patent claim: Steel melting plant with two stationary furnace vessels arranged on a furnace platform, in particular for melting down scrap, with exchangeable vessel lids, one of which the heating device (electrodes) carries, alternating in the first or second The melting process takes place in the vessel, while the one to be melted is in the other vessel Material is prepared, characterized in that a a suction pipe (6,6 ') which can be connected to a gas line (8,8') is arranged that the gas line opens into the lower jacket area of the other vessel (2,1), and one of each gas line leading to a dedusting device (12, 12 ') Secondary line (13,13 ') is branched, and that in the gas line (8,8') - seen in the direction of the gas flow - behind the branch point (14, 14 ') of the secondary line (13, 13 ') a gas shut-off valve (10.10') and in the junction of the gas line (8, 8 ') into the furnace (2, 1) an outlet for charged or molten material One locking device that prevents it from getting out of the oven during the pre-heating. 7-phase (9, 9 ') is arranged.
DE19823232139 1982-08-26 1982-08-26 Steel melting plant with two furnace vessels Withdrawn DE3232139A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19823232139 DE3232139A1 (en) 1982-08-26 1982-08-26 Steel melting plant with two furnace vessels
SE8303974A SE8303974L (en) 1982-08-26 1983-07-14 STEEL MELTING PLANT WITH TWO OVEN CONTAINERS
JP58134232A JPS5938582A (en) 1982-08-26 1983-07-22 Dissolving device for steel with two furnace vessel
IT2230883A IT1170185B (en) 1982-08-26 1983-07-28 PLANT FOR MELTING STEEL WITH TWO OVEN CONTAINERS
ES525153A ES525153A0 (en) 1982-08-26 1983-08-25 "STEEL CASTING INSTALLATION WITH TWO FIXED OVEN TANKS ARRANGED ON A PLATFORM OF FURNACES ESPECIALLY FOR THE SCRAP FOUNDRY"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823232139 DE3232139A1 (en) 1982-08-26 1982-08-26 Steel melting plant with two furnace vessels

Publications (1)

Publication Number Publication Date
DE3232139A1 true DE3232139A1 (en) 1984-03-08

Family

ID=6171993

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823232139 Withdrawn DE3232139A1 (en) 1982-08-26 1982-08-26 Steel melting plant with two furnace vessels

Country Status (5)

Country Link
JP (1) JPS5938582A (en)
DE (1) DE3232139A1 (en)
ES (1) ES525153A0 (en)
IT (1) IT1170185B (en)
SE (1) SE8303974L (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015916A1 (en) * 1990-05-17 1991-11-21 Fuchs Technology Ag MELTING UNIT WITH TWO MELTING OVENS arranged next to each other
DE4138118A1 (en) * 1991-11-19 1993-05-27 Fuchs Systemtechnik Gmbh Melting-down and refining unit for steel - consists of two adjacent furnaces with lid mechanisms operated simultaneously, for melting down and refining-overheating the melt
DE4302285A1 (en) * 1993-01-25 1994-07-28 Mannesmann Ag Method and device for operating a two-furnace system
EP0626547A1 (en) * 1993-05-27 1994-11-30 Sollac S.A. Process and installation for the liquid steel production from carbon-rich ferruginous material
EP0717115A1 (en) * 1994-12-17 1996-06-19 MAN Gutehoffnungshütte Aktiengesellschaft Process and installation for running a twin-vessel arc furnace

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6254013A (en) * 1985-09-03 1987-03-09 Ishikawajima Harima Heavy Ind Co Ltd Method and apparatus for melting scrap
JPS6280489A (en) * 1985-10-03 1987-04-13 石川島播磨重工業株式会社 Arc furnace facility
JPH0746034B2 (en) * 1985-12-09 1995-05-17 石川島播磨重工業株式会社 Double melting equipment
CN103801667B (en) * 2012-11-08 2016-01-06 沈阳中北真空科技有限公司 RE permanent magnetic alloy vacuum induction melting rapid hardening equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5947831B2 (en) * 1976-01-30 1984-11-21 東伸製鋼株式会社 Electric furnace steelmaking equipment
JPS5677684A (en) * 1979-11-27 1981-06-26 Nakayama Steel Works Ltd Recovering device for highhtemperature exhaust gas of single or plural melting furnace for steel manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS-ERMITTELT *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015916A1 (en) * 1990-05-17 1991-11-21 Fuchs Technology Ag MELTING UNIT WITH TWO MELTING OVENS arranged next to each other
WO1991018120A1 (en) * 1990-05-17 1991-11-28 Fuchs Technology Ag Smelting plant with two adjacent smelting furnaces
TR25664A (en) * 1990-05-17 1993-07-01 Fuchs Technology Ag TWO MELTING FURNACE MELTING PLANTS ORGANIZED IN SIDE-ORIENTED RELATIONSHIP.
US5264020A (en) * 1990-05-17 1993-11-23 Fuchs Technology Ag Smelting plant with two melting furnaces arranged in juxtaposed relationship
DE4138118A1 (en) * 1991-11-19 1993-05-27 Fuchs Systemtechnik Gmbh Melting-down and refining unit for steel - consists of two adjacent furnaces with lid mechanisms operated simultaneously, for melting down and refining-overheating the melt
EP0608591A1 (en) * 1993-01-25 1994-08-03 MANNESMANN Aktiengesellschaft Process and installation for running a double furnace plant
DE4302285A1 (en) * 1993-01-25 1994-07-28 Mannesmann Ag Method and device for operating a two-furnace system
US5499264A (en) * 1993-01-25 1996-03-12 Mannesmann Aktiengesellschaft Process and arrangement for operating a double furnace installation
DE4302285C3 (en) * 1993-01-25 1998-07-09 Mannesmann Ag Method and device for operating a two-furnace system
EP0626547A1 (en) * 1993-05-27 1994-11-30 Sollac S.A. Process and installation for the liquid steel production from carbon-rich ferruginous material
FR2705767A1 (en) * 1993-05-27 1994-12-02 Lorraine Laminage Process and plant for the production of liquid steel from ferrous materials rich in carbonaceous materials
US5562753A (en) * 1993-05-27 1996-10-08 Sollac (Societe Anonyme) Method and installation for producing molten steel from ferrous materials rich in carbonaceous materials
EP0717115A1 (en) * 1994-12-17 1996-06-19 MAN Gutehoffnungshütte Aktiengesellschaft Process and installation for running a twin-vessel arc furnace

Also Published As

Publication number Publication date
ES8405133A1 (en) 1984-05-16
IT1170185B (en) 1987-06-03
IT8322308A0 (en) 1983-07-28
IT8322308A1 (en) 1985-01-28
SE8303974L (en) 1984-02-27
JPS5938582A (en) 1984-03-02
SE8303974D0 (en) 1983-07-14
ES525153A0 (en) 1984-05-16

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