EP2855713B1 - Procédé d'ouverture et de fermeture d'un trou de coulée d'une cuve de fusion métallurgique et cuve de fusion métallurgique - Google Patents

Procédé d'ouverture et de fermeture d'un trou de coulée d'une cuve de fusion métallurgique et cuve de fusion métallurgique Download PDF

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Publication number
EP2855713B1
EP2855713B1 EP13722764.1A EP13722764A EP2855713B1 EP 2855713 B1 EP2855713 B1 EP 2855713B1 EP 13722764 A EP13722764 A EP 13722764A EP 2855713 B1 EP2855713 B1 EP 2855713B1
Authority
EP
European Patent Office
Prior art keywords
opening
tapping
closing
vessel
block element
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.)
Not-in-force
Application number
EP13722764.1A
Other languages
German (de)
English (en)
Other versions
EP2855713A1 (fr
Inventor
Mathias LÜTTENBERG
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.)
SMS Group GmbH
Original Assignee
SMS Group 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 SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP2855713A1 publication Critical patent/EP2855713A1/fr
Application granted granted Critical
Publication of EP2855713B1 publication Critical patent/EP2855713B1/fr
Not-in-force 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • 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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • 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
    • F27B3/19—Arrangements of devices for discharging
    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1518—Tapholes
    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
    • 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
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0057—Fast-outlet or inlet means

Definitions

  • the invention relates to a method for opening and closing a tapping opening of a metallurgical melting vessel, in particular an electric arc furnace, in the bottom region of a wall portion is arranged with an opening, wherein below the opening, a device for opening and closing the tapping opening is arranged.
  • the WO 2005/024069 A2 discloses a tapping apparatus for a melting vessel. On a tapping channel here a nozzle replaceable placed. The nozzle is positioned by means of a nozzle changer and replaced by a new nozzle after each tapping or after two or more taps.
  • the device is designed relatively expensive.
  • the EP 1 172 162 A1 shows a solution in which two vertically superimposed linear slide are provided in the tapping opening. By appropriate control of the slide, a free-flowing filling compound is introduced into the intermediate space between the slides in order to close the tapping opening again after tapping.
  • Another problem is that a high level of security must be ensured, ie. H. the proper functioning of the components during tapping (safety against tapping runners).
  • the invention is therefore based on the object to provide a method of the type mentioned above and a melt-metallurgical vessel, with which it is possible to carry out the tapping cost and safely.
  • the device used should be simple in design. The same process conditions should be guaranteed for every tapping. The tapping should be carried out in a safe manner, so that tapping can be safely avoided.
  • the solution of this object by the invention according to the method is characterized in that below the opening of Wandungsabitess a device for moving block elements is arranged in one direction, which is perpendicular to the surface normal of the Wandungsabitess in the region of the opening (ie in the tangential direction of the Wandungsabêt or in the plane of the Wandungsabitess), wherein the device holds the block elements on the Wandungsabrough so that they rest sealingly on the wall portion, wherein for closing the tap opening a block element of the device below the opening is pushed, which is free of passage openings, and wherein for opening the tap opening a block element is pushed by the device under the opening, which has at least one passage opening, so that can drain through the passage opening in the block element liquid metal from the melting vessel, wherein for each closing of the tap opening a new block element is used without passage opening and wherein for each opening of the tap opening, a new block element is used with passage opening.
  • the block elements are translationally displaced by the device in the direction which is perpendicular to the surface normal of the wall portion in the region of the opening.
  • the passage opening in the block element is vorzugswiese at least partially filled with slider sand prior to placement under the opening.
  • a corresponding metallurgical melting vessel is characterized in that the device has a guide for displacing block elements in one direction, which is perpendicular to the surface normal of the wall section in the region of the opening, and at least one actuator for displacing the block elements.
  • the guide is preferably designed to hold the block elements sealingly on the wall section.
  • the guide is preferably a linear guide. It is also conceivable, however, an arcuate guide on which the block elements can be performed rotatory.
  • the actuator is preferably a hydraulic piston-cylinder system.
  • the block elements are preferably cuboid.
  • the invention proposal is based on alternating nozzles and shut-off blocks, with which the tapping can be opened and closed automatically.
  • the tapping can be opened and closed automatically.
  • a plugging machine is used for filling the pusher sand through the alumina plug.
  • the proposed procedure is preferably used on fixed meltdown units. However, it is not excluded that the proposal according to the invention is also used on non-fixed aggregates.
  • the preferred application of the invention are smelting units such as electric arc furnaces (SAF - Submerged Arc Furnace, so-called Contiarc ovens).
  • a metallurgical melting vessel 2 is sketched in the form of electric arc furnace.
  • scrap is liquefied by 12 energy is entered in a known manner by means of electrodes.
  • melt 16 is formed, which occupies a certain level in the vessel 2.
  • the vessel has a wall with a bottom region 3, in which a tapping opening 1 is present, can be discharged via the melt 16 from the vessel 2.
  • the tapping opening 1 in a defined manner to open and close again.
  • an opening 5 is present in a wall section 4 of the bottom area 3, which opening can be opened or closed from below.
  • a device 6 is provided, which will be described in more detail below.
  • a refractory protective tube 15 is arranged above the opening 5.
  • a filling tube 13 for slider sand is present, at the lower end of a bell 14 is arranged for slag-free tapping.
  • a first type of block elements 7 consists of a refractory body, which is free of channels.
  • a second type of block elements 8 is also provided which have a passage opening 9 and act as an outlet nozzle for liquid metal.
  • Said block elements 7, 8 are selectively displaced by the device 6, namely in a direction T which is perpendicular to the surface normal of the wall section 4 in the region of the opening 5, d. H. There is a shift in the plane defined by the bottom of the wall portion 4 of the vessel; it is therefore a tangential displacement along the surface of the wall region 4.
  • a block element 7 has been pushed by an actuator 11 of the device 6 directly under the opening 5, so that the vessel 2 is sealed and consequently no melt 16 can escape.
  • scrap is melted in the vessel and thus generates a certain level of melt 16 in the vessel 2.
  • the opening 5 in the bottom region 3 is in this case filled with slider sand.
  • Fig. 2 is shown that the vessel 2 is open for tapping down, ie, the opening 5 is released, so that melt 16 can flow out of the vessel 2.
  • a block element 8 has been pushed with the passage opening 9 by the actuator 11 under the opening 5, so that now melt 16 can flow out of the vessel 2.
  • Fig. 2 is indicated by an arrow that the previously inserted block element 7 was ejected; it is disposed of.
  • the vessel 2 is closed again; this is in Fig. 3 indicated.
  • the actuator 11 By the actuator 11, the next block element 7 - now again without a passage opening 9 - has been pushed under the opening 5, whereby the latter is sealed.
  • slider sand is again filled into the opening 5 before recharging the vessel 2.
  • Fig. 3 is again indicated by an arrow that used block elements 7, 8 - now the block element 8 - are ejected and disposed of.
  • Fig. 4 For details on the structure of the device 6 can be seen. It can be seen that the block elements 7, 8 are displaced on a (linear) guide 10 in the direction T, to which end the piston-cylinder system 11 serves. The block elements 7, 8 must bear sealingly against the underside of the wall section 4 in order to prevent the melt 16 from escaping from the vessel 2. For this purpose, what is not shown in detail, be provided that an upward force on the block elements 7, 8 is exerted by the linear guide 10, so that these elements lie cleanly against the underside of the wall section 4.
  • a solid block 7 is placed without opening under the bottom sleeve and the sleeve filled with slider sand by means of the filling tube 13. Immediately thereafter, the batching can be started to start the meltdown cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Claims (3)

  1. Procédé pour ouvrir et fermer un trou de coulée (1) d'une cuve de fusion métallurgique (2), en particulier d'un four électrique à arc, dans la partie inférieure (3) duquel est disposé un tronçon de paroi (4) comportant une ouverture (5), un dispositif (6) étant disposé en dessous de l'ouverture (5) pour déplacer des éléments (7, 8) en forme de blocs dans une direction (T) qui est perpendiculaire à la normale de surface dans le tronçon de paroi (4) dans la zone de l'ouverture (5), le dispositif (6) maintenant les éléments en forme (7, 8) de blocs contre le tronçon de paroi (4) de manière telle qu'ils viennent se disposer de manière étanche en position adjacente contre le tronçon de paroi (4),
    dans lequel, pour fermer le trou de coulée (1), le dispositif (6) déplace, en dessous de l'ouverture (5), un élément (7) en forme de bloc qui est exempt d'ouvertures de passage ; et
    dans lequel, pour ouvrir le trou de coulée (1), le dispositif (6) déplace, en dessous de l'ouverture (5), un élément (8) en forme de bloc qui présente au moins une ouverture de passage (9), de manière telle que du métal en fusion peut s'écouler à travers l'ouverture de passage (9) pratiquée dans l'élément (8) en forme de bloc, à partir de la cuve de fusion (2);
    dans lequel, pour chaque fermeture du trou de coulée (1), on utilise un nouvel élément (7) en forme de bloc exempt d'ouverture de passage ; et
    dans lequel pour chaque ouverture du trou de coulée (1), on utilise un nouvel élément (8) en forme de bloc comprenant une ouverture de passage (9).
  2. Procédé selon la revendication 1, caractérisé en ce que les éléments (7, 8) en forme de blocs sont déplacés par le dispositif (6) via un mouvement de translation dans la direction (T) qui est perpendiculaire à la normale de surface dans le tronçon de paroi (4) dans la zone de l'ouverture (5).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'ouverture de passage (9) pratiquée dans l'élément (8) en forme de bloc, avant son placement en dessous de l'ouverture, est remplie au moins en partie avec du Schiebersand.
EP13722764.1A 2012-06-05 2013-05-16 Procédé d'ouverture et de fermeture d'un trou de coulée d'une cuve de fusion métallurgique et cuve de fusion métallurgique Not-in-force EP2855713B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012209504A DE102012209504A1 (de) 2012-06-05 2012-06-05 Verfahren zum Öffnen und Schließen einer Abstichöffnung eines metallurgischen Schmelzgefäßes und metallurgisches Schmelzgefäß
PCT/EP2013/060120 WO2013182395A1 (fr) 2012-06-05 2013-05-16 Procédé d'ouverture et de fermeture d'un trou de coulée d'une cuve de fusion métallurgique et cuve de fusion métallurgique

Publications (2)

Publication Number Publication Date
EP2855713A1 EP2855713A1 (fr) 2015-04-08
EP2855713B1 true EP2855713B1 (fr) 2016-07-13

Family

ID=48444392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13722764.1A Not-in-force EP2855713B1 (fr) 2012-06-05 2013-05-16 Procédé d'ouverture et de fermeture d'un trou de coulée d'une cuve de fusion métallurgique et cuve de fusion métallurgique

Country Status (6)

Country Link
US (1) US9200846B2 (fr)
EP (1) EP2855713B1 (fr)
KR (1) KR101705266B1 (fr)
DE (1) DE102012209504A1 (fr)
RU (1) RU2593042C1 (fr)
WO (1) WO2013182395A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012209504A1 (de) * 2012-06-05 2013-12-05 Sms Siemag Ag Verfahren zum Öffnen und Schließen einer Abstichöffnung eines metallurgischen Schmelzgefäßes und metallurgisches Schmelzgefäß
DE102015113241A1 (de) 2015-08-11 2017-02-16 Rhm Rohstoff-Handelsgesellschaft Mbh Verfahren zum Einbringen von Zuschlagstoffen in Metallschmelzen
CN109128125A (zh) * 2018-10-30 2019-01-04 马鞍山钢铁股份有限公司 一种连铸钢包无引流开浇装置及无引流开浇方法
EP3851225A1 (fr) * 2020-01-15 2021-07-21 Refractory Intellectual Property GmbH & Co. KG Fermeture coulissante pour une cuve métallurgique

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DE3230107A1 (de) * 1982-08-13 1984-03-01 Raimund Dipl.-Ing. 6238 Hofheim Brückner Verwendung von keramischem fasermaterial bei feuerfesten verschleissteilen von schiebeverschluessen fuer fluessige metallschmelze enthaltende gefaesse sowie schiebeverschluss mit feuerfesten verschleissteilen aus keramischem fasermaterial
DE3230646C1 (de) 1982-08-13 1983-10-20 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zum Verschließen des Abstichloches eines feststehenden, nicht kippbaren Elektro-Metallschmelzofens
JPH05200534A (ja) * 1992-01-28 1993-08-10 Kawasaki Steel Corp 取鍋出鋼口からの詰め砂排出処理装置
BE1005987A3 (fr) * 1992-06-16 1994-04-12 Int Ind Eng Sa Dispositif de regulation d'un debit de coulee.
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DE4316669A1 (de) 1993-05-13 1994-11-17 Mannesmann Ag Vorrichtung zum Verschließen des Bodenabstichs eines metallurgischen Gefäßes
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FR2745210B1 (fr) 1996-02-28 1998-04-30 Vesuvius France Sa Unite coulissante pour un conteneur metallurgique, et plaque associee
DE19641169C1 (de) 1996-10-08 1998-05-28 Didier Werke Ag Verfahren und Vorrichtung zum disontinuierlichen Abstechen von Schmelzen
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JP3416531B2 (ja) 1998-07-22 2003-06-16 Ｊｆｅエンジニアリング株式会社 ノズル交換装置
US6210531B1 (en) 1998-10-26 2001-04-03 Px Technologies, Ltd. Forming machines
JP3364458B2 (ja) 1999-10-26 2003-01-08 日本サーモケミカル株式会社 金属溶湯収容器用摺動開閉装置のノズル充填材
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DE102012209504A1 (de) * 2012-06-05 2013-12-05 Sms Siemag Ag Verfahren zum Öffnen und Schließen einer Abstichöffnung eines metallurgischen Schmelzgefäßes und metallurgisches Schmelzgefäß

Also Published As

Publication number Publication date
US20150145184A1 (en) 2015-05-28
KR20140146660A (ko) 2014-12-26
WO2013182395A1 (fr) 2013-12-12
EP2855713A1 (fr) 2015-04-08
RU2593042C1 (ru) 2016-07-27
KR101705266B1 (ko) 2017-02-09
DE102012209504A1 (de) 2013-12-05
US9200846B2 (en) 2015-12-01

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