EP0267366A1 - Refractory lining, especially for tundish covers - Google Patents

Refractory lining, especially for tundish covers Download PDF

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Publication number
EP0267366A1
EP0267366A1 EP87109901A EP87109901A EP0267366A1 EP 0267366 A1 EP0267366 A1 EP 0267366A1 EP 87109901 A EP87109901 A EP 87109901A EP 87109901 A EP87109901 A EP 87109901A EP 0267366 A1 EP0267366 A1 EP 0267366A1
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EP
European Patent Office
Prior art keywords
heat shield
lining according
cover
refractory
lining
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Granted
Application number
EP87109901A
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German (de)
French (fr)
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EP0267366B1 (en
Inventor
Laurenz Keisers
Kurt Engelmann
Rainer Janssen
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Didier Werke AG
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Didier Werke AG
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Priority to AT87109901T priority Critical patent/ATE53520T1/en
Publication of EP0267366A1 publication Critical patent/EP0267366A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings

Definitions

  • the invention relates to a refractory lining for the lid of metallurgical vessels, in particular for a heat distributor used in continuous casting plants, the inside of which is lined with fireproof material and provided with burner openings.
  • lids have either a refractory concrete layer on the fire side or a fire-resistant cladding which can be bricked up or can be constructed like a fire blanket.
  • a refractory concrete layer on the fire side or a fire-resistant cladding which can be bricked up or can be constructed like a fire blanket.
  • the object of the present invention is to facilitate handling during repairs and new deliveries with improved operating behavior and increased thermal insulation by means of an improved structure and arrangement of the refractory lining in the lid.
  • a heat shield which can be removed from the cover plate by means of supporting members and is movably held in plan is arranged in front of an insulation by inserting an elastic peripheral seal.
  • the lining compensates for thermal stresses excellently and is extremely thermally insulated.
  • the invention provides a support plate clad on the fire side with refractory material with support pins which are mounted so as to be movable in a plane in the base, penetrate the insulation and are suspended on the cover plate, the pins being held with a collar in a tolerance chamber of the base.
  • This construction gives the heat shield sufficient plan mobility with simple constructional means and creates optimal conditions for handling, especially when the supporting bolts are advantageously detachably suspended from the sleeve of the cover plate and pipe sockets are provided on this plate, which limit recesses in the insulation and the arrangement of supporting bolts and base surround.
  • the refractory cover lining is made of ceramic fiber packs, while the heat shield has a refractory concrete layer anchored to the support plate with the interposition of a ceramic fiber mat by pins.
  • the refractory concrete layer can be removed from the support plate together with the fiber mat if necessary.
  • burner stones arranged on the heat shield engage in collars fastened around the burner openings on the cover plate and lined with ceramic fiber material.
  • the one made Basic assignment of the burner blocks to the heat shield contributes to further simplifying the maintenance of the cover, especially if preferably each burner block is detachably held at least at two opposite locations on the circumferential surface by a holding device arranged on the support plate in the refractory concrete layer, so that after the refractory concrete layer is broken open in the said places each burner block on the installed or removed heat shield can be replaced.
  • refractory protective sleeves are provided on the heat shield, which surround these supports in the case of a cover with support supports provided in an emptying gap.
  • the heat shield is divided longitudinally into shield sections with their own peripheral seals. This is a particularly advantageous embodiment because the individual sections of the heat shield can be replaced independently of one another and it is possible to adapt the size dimensions of the sections to existing transport means.
  • circumferential frames enclosing the refractory concrete layer are provided on the support plate of the heat shield or the shield sections, on which sealing cords made of ceramic fiber are inserted, which results in a simple but effective sealing.
  • V denotes a distributor, which is used to feed continuous casting molds with molten steel and is provided on one long side with a pouring core 1, also an intermediate container or tundish, which has a metallic jacket 2 and a refractory lining 3. Furthermore, a row of spouts 4 with inlet connections 5 and external slide closures 6 are provided in the center of the distributor base, by means of which the melt discharge to the individual molds of the continuous casting plant can be regulated through pouring tubes (not shown).
  • the distributor V is covered with a cover W lined with insulating and refractory materials.
  • This has a mounting frame 7 and a cover plate 10 provided with burner openings 8 and a pouring opening 9, on which a profile rail 12 including and cooling a circumferential cooling 11 is provided.
  • the cover W has insulation 13, which is protected by a heat shield H, which consists of a heat-resistant support plate 15 clad on the fire side with a fire-concrete layer 14 and is held detachably on the cover plate 10 by means of support bolts 16 attached thereto.
  • the insulation penetrating burner blocks 18 are arranged on the heat shield H, whereas an opening lining 19 made of unshaped refractory material is provided at the pouring opening 9 and extends over the pouring core 1.
  • the cover W has on the long side, on which the pouring core 1 is located, an emptying gap 20 with refractory-clad cover supports 21 resting on the distributor V, around which the board surface 22 on which the cover W is seated has a refractory protective layer 23 wearing.
  • stopper 25 which can be clamped onto the distributor by means of hydraulic means (not shown) and which can be clamped onto the distributor, can be inserted into the burner blocks 18 to close the burner openings 8.
  • the gap 20 serves to free the distributor V parked on the parking space outside the continuous casting installation by tilting about its longitudinal axis from residual melt containing predominantly slag in order to avoid freezing in the ceramic of the slide closures 6. Also on the parking space, the distributor V is heated before it is used in the continuous casting installation, for which purpose 8 burners are inserted into the burner openings which are otherwise closed by the plugs 25. In addition, another cover with 8 burners permanently attached to the burner openings is available as part of the management of a continuous caster. If emptying is no longer guaranteed - the dwell time is too long - you have to tilt back to the starting position and release the lock. Now a "second cover" in the waiting position is put on and hydraulically clamped again.
  • This "second lid” is the same as the other, with the exception of the high-performance burners located there.
  • These high-performance burners are arranged in such a way that they are located when the cover is placed on the distributor channel, just above the tundish sliding locks (slide lock heating). These six high-performance burners are able to heat the interior to over 1500 ° C and liquefy the residual steel cooled there.
  • a sealing braid 26 made of ceramic fiber material is introduced into the gap 20 and is only removed again before the distributor V is emptied.
  • FIGS. 6 to 12. 6 to 9 The more detailed design of the refractory lining of the cover W can be seen in FIGS. 6 to 12. 6 to 9, the insulation 13 composed of ceramic fiber packs 30 is attached to the inside of the cover plate 10, which has been tried and tested with profiled rails 12, leaving pipe stubs 31 attached to the cover plate 10 free, through which the support bolts 16 of the removable heat shield H engage for wedging plug sleeves 32 fastened to the cover plate 10.
  • the perforated support plate 15 of the heat shield H has hollow-cylindrical bases 34 on the upper side which fit into the pipe socket 31 and in which the support bolts 16 are movably mounted in a plane plane.
  • the support plate 15 is equipped with expansion pins 35 in a checkerboard manner, for holding a ceramic fiber mat 36, an oil paper or plastic film 37 and the refractory concrete layer 14, the positions 36, 37 and 14 being fitted by a peripheral frame 39 of the plate 15.
  • the heat shield H according to FIG. 8 is subdivided lengthwise into individually interchangeable and interchangeable shield sections 40, which in FIG.
  • each support bolt 16 is supported by a collar 42 in a tolerance chamber 44 of the base 34, which has cleaning openings 43 and whose cover plate 45 is welded when the support bolt 16 is inserted.
  • bases 34 are shortened by the gap width in the area of the gap 20. There, in the gap area, the thickness of the insulation 13 is reduced accordingly and the mounting frame 7 of the Cover W replaced by supports 21 protected with refractory protective sleeves 47 (see FIG. 6).
  • the sleeves 47 which are advantageously prefabricated from refractory concrete, are part of the heat shield H or the shield sections 40 and, when the cover W is placed on the board surface 22 of the distributor V, engage in recesses 48 in the protective layer 23 covering this surface in the region of the gap 2, with a seal being provided ceramic fiber cord 49.
  • the opening lining 19 similar to the heat shield H, consists of a fiber mat 36 of a film 37 and of refractory concrete 14, which also includes the filling side of the pouring opening 9.
  • each burner block 18 can be closed with the plug 25 mentioned at the beginning, which, according to FIG. 12, consists of a reinforcement pot 67 carrying the handling shaft 24 and an outside refractory lining. Based on the heat shield H on expansion pins 35 of the reinforcement pot 56, this is formed by a ceramic fiber mat 36, a film 37 and a refractory concrete layer 38.
  • the described cover W with its emptying gap 20 is suitable for special operating conditions.
  • the lining according to the invention applies to lids which have no lateral emptying gap.
  • the lining according to the invention also does justice to metallurgical vessels which are not used in continuous casting plants but are subject to similar operating conditions.

Abstract

The refractory lining of a cover for tundishes in continuous-casting installations is improved substantially by separation into an insulation (13) and a heatshield (H) which is arranged movably in one plane and removably on supporting members (16, 34), with a circumferential gasket (41) being inserted. This makes it easier, above all, to carry out assembly and repair work. <IMAGE>

Description

Die Erfindung betrifft eine feuerfeste Auskleidung für Deckel metallurgischer Gefäße, insbesondere für einen bei Stranggießanlagen eingesetzten Warmverteiler, dessen innenseitig mit feuerfestem Material ausgekleideter Deckel mit Brenneröffnungen versehen ist.The invention relates to a refractory lining for the lid of metallurgical vessels, in particular for a heat distributor used in continuous casting plants, the inside of which is lined with fireproof material and provided with burner openings.

Derartige Deckel tragen feuerseitig entweder eine Feuerbetonschicht oder eine feuerfeste Verkleidung, die vermauert oder auch feuerdeckenartig aufgebaut sein kann. Schwierig ist bei allen bekannten Ausführungen die umständliche und aufwendige Demontage und Montage beim Erneuern der Deckelzustellung, die im Betrieb infolge ihres kompakten Aufbaues meist hohen Wärmespannungen ausgesetzt ist und durch Rißbildungen frühzeitig zerstört wird bzw. fortwährende Reparaturprobleme aufwirft. Außerdem läßt die Wärmedämmung zu wünschen übrig.Such lids have either a refractory concrete layer on the fire side or a fire-resistant cladding which can be bricked up or can be constructed like a fire blanket. What is difficult with all known designs is the complicated and time-consuming disassembly and assembly when renewing the cover infeed, which due to its compact structure is usually exposed to high thermal stresses during operation and is prematurely destroyed by cracks or poses ongoing repair problems. In addition, the thermal insulation leaves something to be desired.

Aufgabe vorliegender Erfindung ist es, durch eine verbesserte Struktur und Anordnung der Feuerfesten Auskleidung im Deckel Handhabungen bei Reparaturen und Neuzustellungen zu erleichtern bei verbessertem Betriebsverhalten und erhöhter Wärmedämmung.The object of the present invention is to facilitate handling during repairs and new deliveries with improved operating behavior and increased thermal insulation by means of an improved structure and arrangement of the refractory lining in the lid.

Die gestellte Aufgabe wird gemäß der Erfindung im wesentlichen dadurch gelöst, daß im Deckel vor einer Isolierung ein am Deckelblech mittels Traggliedern abnehmbar und plan beweglich gehaltener Hitzeschild unter Einfügen einer elastischen Umfangsdichtung angeordnet ist. Dadurch ergibt sich eine Aukleidung mit getrennten, isolierenden und feuerfesten Zustellungen. Letztere in Form eines Hitzeschildes, der unabhängig von der Isolierung vorgefertigt und infolge des in seiner Anordnung vorgesehenen plan beweglichen Spiels zügig ein- und ausgebaut werden kann. Darüberhinaus kompensiert die Auskleidung Wärmespannungen hervorragend und ist bestens wärmedämmed.The object is achieved in accordance with the invention essentially in that a heat shield which can be removed from the cover plate by means of supporting members and is movably held in plan is arranged in front of an insulation by inserting an elastic peripheral seal. This results in outer clothing with separate, insulating and refractory linings. The latter in the form of a heat shield, which is prefabricated independently of the insulation and can be quickly installed and removed as a result of the planar movable play provided in its arrangement. In addition, the lining compensates for thermal stresses excellently and is extremely thermally insulated.

Bezüglich des Hitzeschildes sieht die Erfindung ein feuerseitig mit feuerfestem Material verkleidetes Tragblech mit in Sockeln plan beweglich lagernden, die Isolierung durchdringenden und am Deckelblech aufgehängten Tragbolzen vor, wobei die Bolzen mit einem Bund in einer Toleranzkammer der Sockel gehalten sind. Diese Konstruktion vermittelt dem Hitzeschild ausreichende Planbeweglichkeit mit einfachen baulichen Mitteln und schafft optimale Bedingungen für Hantierungen, insbesondere dann, wenn vorteilhaft die Tragbolzen an Steckhülsen des Deckelbleches lösbar aufgehängt und an diesem Blech Rohrstutzen vorgesehen sind, welche Ausnehmungen in der Isolierung begrenzen und die Anordnung aus Tragbolzen und Sockel umgeben.With regard to the heat shield, the invention provides a support plate clad on the fire side with refractory material with support pins which are mounted so as to be movable in a plane in the base, penetrate the insulation and are suspended on the cover plate, the pins being held with a collar in a tolerance chamber of the base. This construction gives the heat shield sufficient plan mobility with simple constructional means and creates optimal conditions for handling, especially when the supporting bolts are advantageously detachably suspended from the sleeve of the cover plate and pipe sockets are provided on this plate, which limit recesses in the insulation and the arrangement of supporting bolts and base surround.

Vorteilhaft besteht in näherer Ausbildung der feuerfesten Deckelauskleidung die Isolierung aus keramischen Faserpacken, während der Hitzeschild eine am Tragblech unter Zwischenfügen einer keramischen Fasermatte durch Stifte verankerte Feuerbetonschicht aufweist. Dadurch läßt sich die Feuerbetonschicht im Bedarfsfall gemeinsam mit der Fasermatte anstandslos vom Tragblech entfernen.Advantageously, the refractory cover lining is made of ceramic fiber packs, while the heat shield has a refractory concrete layer anchored to the support plate with the interposition of a ceramic fiber mat by pins. As a result, the refractory concrete layer can be removed from the support plate together with the fiber mat if necessary.

Hinsichtlich der im Deckel vorgesehenen Brenneröffnungen wird gemäß der Erfindung vorgeschlagen, daß am Hitzeschild angeordnete Brennersteine in um die Brenneröffnungen am Deckelblech befestigte, mit keramischem Fasermaterial ausgefütterte Kragen greifen. Vor allem die vorgenommene grundsätzliche Zuordnung der Brennersteine zum Hitzeschild trägt zur weiteren Vereinfachung der Wartung des Deckels bei, zumal, wenn vorzugsweise jeder Brennerstein an wenigstens zwei gegenüberliegenden Stellen der Umfangsfläche von je einer am Tragblech in der Feuerbetonschicht angeordneten Haltevorrichtung lösbar gehalten ist, so daß nach Aufbrechen der Feuerbetonschicht an den besagten Stellen jeder Brennerstein am ein- oder ausgebauten Hitzeschild austauschbar ist.With regard to the burner openings provided in the cover, it is proposed according to the invention that burner stones arranged on the heat shield engage in collars fastened around the burner openings on the cover plate and lined with ceramic fiber material. Especially the one made Basic assignment of the burner blocks to the heat shield contributes to further simplifying the maintenance of the cover, especially if preferably each burner block is detachably held at least at two opposite locations on the circumferential surface by a holding device arranged on the support plate in the refractory concrete layer, so that after the refractory concrete layer is broken open in the said places each burner block on the installed or removed heat shield can be replaced.

Ferner sind gemäß der Erfindung am Hitzeschild feuerfeste Schutzhülsen vorgesehen, die bei einem Deckel mit in einem Entleerungsspalt vorgesehenen Auflagestützen, diese Stützen umgeben. Eine solche Hülsenanordnung bewirkt eine weitere Verbesserung der feuerfesten Auskleidung.Furthermore, according to the invention, refractory protective sleeves are provided on the heat shield, which surround these supports in the case of a cover with support supports provided in an emptying gap. Such a sleeve arrangement brings about a further improvement in the refractory lining.

Ein weiteres Merkmal der Erfindung besteht darin, daß der Hitzeschild in Schildabschnitte mit eigenen Umfangsdichtungen längs unterteilt ist. Das ist eine besondere vorteilhafte Ausführung, weil die einzelnen Abschnitte des Hitzeschildes unabhängig voneinander ersetzt werden können und es möglich ist, die Größenabmessungen der Abschnitte vorhandenen Tranportmitteln anzupassen.Another feature of the invention is that the heat shield is divided longitudinally into shield sections with their own peripheral seals. This is a particularly advantageous embodiment because the individual sections of the heat shield can be replaced independently of one another and it is possible to adapt the size dimensions of the sections to existing transport means.

Zweckmäßig sind am Tragblech des Hitzeschildes bzw. der Schildabschnitte die Feuerbetonschicht einfassende Umfangszargen vorgesehen, an denen Abdichtungsschnüre aus keramischer Faser eingefügt werden, was eine einfache, aber wirkungsvolle Abdichtung ergibt.Expediently, circumferential frames enclosing the refractory concrete layer are provided on the support plate of the heat shield or the shield sections, on which sealing cords made of ceramic fiber are inserted, which results in a simple but effective sealing.

Die Erfindung ist nachstehend anhand der Zeichnung an einem Ausführungsbeispiel erläutert.

  • Figur 1 zeigt in vereinfachter, schematischer Darstellung einen teilweise im Schnitt darsgestellten Verteiler mit aufgesetztem Deckel im Aufriß,
  • Figur 2 die Draufsicht auf den Deckel,
  • Figur 3 einen Schnitt nach der Linie A-A der Figur 2, während
  • Figuren 4 und 5 dergleichen Schnitte nach den Linien E-E und C-C veranschaulichen.
  • Figuren 6 bis 9 sind in größerem Maßstab gehaltene Schnitte, ebenfalls nach den Linien B-B, C-C sowie D-D und E-E der Figur 2, indessen die
  • Figuren 10 bis 12 Einzelheiten der Figur 9 darstellen.
The invention is explained below with reference to the drawing using an exemplary embodiment.
  • FIG. 1 shows a simplified, schematic illustration of a distributor, partially in section, with a lid in elevation,
  • FIG. 2 shows the top view of the lid,
  • Figure 3 is a section along the line AA of Figure 2, while
  • Figures 4 and 5 illustrate similar sections along lines EE and CC.
  • Figures 6 to 9 are sections on a larger scale, also along the lines BB, CC and DD and EE of Figure 2, but the
  • Figures 10 to 12 show details of Figure 9.

In Figur 1 bedeutet V einen zum Beschicken von Stranggießkokillen mit Stahlschmelze dienenden, an einer Längsseite mit einem Eingießerker 1 ausgestatteten Verteiler, auch Zwischenbehälter oder Tundish gennant, der einen metallischen Mantel 2 und eine feuerfeste Auskleidung 3 hat. Ferner sind längsmittig im Verteilerboden eine Reihe von Ausgüssen 4 mit Einlaufstutzen 5 sowie außenliegenden Schieberverschlüssen 6 vorgesehen, mit denen der Schmelzeabfluß durch nicht dargestellte Gießrohre zu den einzelnen Kokillen der Stranggießanlage geregelt werden kann.In FIG. 1, V denotes a distributor, which is used to feed continuous casting molds with molten steel and is provided on one long side with a pouring core 1, also an intermediate container or tundish, which has a metallic jacket 2 and a refractory lining 3. Furthermore, a row of spouts 4 with inlet connections 5 and external slide closures 6 are provided in the center of the distributor base, by means of which the melt discharge to the individual molds of the continuous casting plant can be regulated through pouring tubes (not shown).

Abgedeckt ist der Verteiler V mit einem mit Isolier- und Feuerfestmaterialien ausgekleideten Deckel W. Dieser hat einen Aufsetzrahmen 7 und ein mit Brenneröffnungen 8 und einer Eingießöffnung 9 versehenes Deckelblech 10, an dem eine Umfangskühlung 11 einschließende und armierende Profilschiene 12 vorgesehen sind. Innenseitig weist der Deckel W eine Isolierung 13 auf, die durch einen Hitzeschild H geschützt ist, der aus einem feuerseitig mit einer Feuerbetonschicht 14 verkleideten, hitzebeständigen Tragblech 15 besteht und mittels daran angebrachter Tragbolzen 16 am Deckelblech 10 abnehmbar gehalten ist. Im Bereich der Brenneröffnungen 8 sind am Hitzeschild H die Isolierung durchdringende Brennersteine 18 angeordnet, wogegen an der Eingießöffnung 9 eine über den Eingießerker 1 sich erstreckende Öffnungsauskleidung 19 aus ungeformtem feuerfesten Material vorgesehen ist. Desweiteren hat der Deckel W an der Längsseite, and der sich der Eingießerker 1 befindet, einen Entleerungsspalt 20 mit auf dem Verteiler V aufliegenden, feuerfest verkleideten Deckelstützen 21, um die herum die Boardfläche 22, auf der der Deckel W aufsitzt, eine feuerfeste Schutzschicht 23 trägt. Außerdem gehören zu dem mit nicht gezeigten hydraulischen Mitteln auf den Verteiler festklemmbaren Deckel W an Hantierungsschäften 24 transportierbare Stopfen 25, die zum Verschließen der Brenneröffnungen 8 in die Brennersteine 18 einbringbar sind.The distributor V is covered with a cover W lined with insulating and refractory materials. This has a mounting frame 7 and a cover plate 10 provided with burner openings 8 and a pouring opening 9, on which a profile rail 12 including and cooling a circumferential cooling 11 is provided. On the inside, the cover W has insulation 13, which is protected by a heat shield H, which consists of a heat-resistant support plate 15 clad on the fire side with a fire-concrete layer 14 and is held detachably on the cover plate 10 by means of support bolts 16 attached thereto. in the In the area of the burner openings 8, the insulation penetrating burner blocks 18 are arranged on the heat shield H, whereas an opening lining 19 made of unshaped refractory material is provided at the pouring opening 9 and extends over the pouring core 1. Furthermore, the cover W has on the long side, on which the pouring core 1 is located, an emptying gap 20 with refractory-clad cover supports 21 resting on the distributor V, around which the board surface 22 on which the cover W is seated has a refractory protective layer 23 wearing. In addition, stopper 25, which can be clamped onto the distributor by means of hydraulic means (not shown) and which can be clamped onto the distributor, can be inserted into the burner blocks 18 to close the burner openings 8.

Der Spalt 20, dient dazu, den auf dem Abstellplatz außerhalb der Stranggießanlage abgestellten Verteiler V durch Kippen um seine Längsachse von überwiegend Schlacke enthaltender Restschmelze zu befreien, um Einfrierungen in der Keramik der Schieberverschlüsse 6 zu vermeiden. Ebenfalls auf dem Abstellplatz wird der Verteiler V vor seinem Einsatz in der Stranggießanlage aufgeheizt, wozu in die ansonsten durch die Stopfen 25 verschlossenen Brenneröffnungen 8 Brenner eingefahren werden. Im übrigen steht im Rahmen der Wirtschaftsführung einer Stranggießanlage ein weiterer Deckel mit an die Br enneröffungen 8 festmontierten Brennern bereit. Sollte eine Entleerung nicht mehr gewährleistet sein - die Verweilzeit ist zu groß -, muß in Ausgangsposition zurückgekippt und die Arretierung gelöst werden. Jetzt wird ein in Warteposition dort befindlicher "zweiter Deckel" aufgesetzt und wieder hydraulisch festgeklemmt. Dieser "zweite Deckel" ist gegenüber dem anderen gleich, mit Ausnahme der dort befindlichen Hochleistungsbrennern. Diese Hochleistungsbrenner sind so angeordnet, daß sie sich bei der Deckelauflage auf die Verteilerrinne, genau oberhalb der Tundish-Schiebeverschlüsse, befinden (Schiebeverschlußheizung). Diese sechs Hochleistungsbrenner sind in der Lage, den Innenraum auf über 1500 °C zu erwärmen und den dort erkalteten Reststahl wieder zu verflüssigen. Nach dem Aufheizen des Verteilers V wird in den Spalt 20 ein Dichtungszopf 26 (siehe Figur 9) aus keramischen Fasermaterial eingebracht, der erst vor der Entleerung des Verteilers V wieder entfernt wird.The gap 20 serves to free the distributor V parked on the parking space outside the continuous casting installation by tilting about its longitudinal axis from residual melt containing predominantly slag in order to avoid freezing in the ceramic of the slide closures 6. Also on the parking space, the distributor V is heated before it is used in the continuous casting installation, for which purpose 8 burners are inserted into the burner openings which are otherwise closed by the plugs 25. In addition, another cover with 8 burners permanently attached to the burner openings is available as part of the management of a continuous caster. If emptying is no longer guaranteed - the dwell time is too long - you have to tilt back to the starting position and release the lock. Now a "second cover" in the waiting position is put on and hydraulically clamped again. This "second lid" is the same as the other, with the exception of the high-performance burners located there. These high-performance burners are arranged in such a way that they are located when the cover is placed on the distributor channel, just above the tundish sliding locks (slide lock heating). These six high-performance burners are able to heat the interior to over 1500 ° C and liquefy the residual steel cooled there. After the distributor V has been heated up, a sealing braid 26 (see FIG. 9) made of ceramic fiber material is introduced into the gap 20 and is only removed again before the distributor V is emptied.

Die nähere Ausgestaltung der feuerfesten Verkleidung des Deckels W ist aus den Figuren 6 bis 12 ersichtlich. Im einzelnen ist gemäß den Figuren 6 bis 9 innenseitig des mit Profilschienen 12 bewährten Deckelbleches 10 die aus keramischen Faserpacken 30 zusammengesetzte Isolierung 13 angebracht, unter Freilassen von am Deckelblech 10 befestigten Rohrstutzen 31, durch welche die Tragbolzen 16 des abnehmbaren Hitzeschildes H hindurchgreifen zur Ankeilung an am Deckelblech 10 befestigten Steckhülsen 32.The more detailed design of the refractory lining of the cover W can be seen in FIGS. 6 to 12. 6 to 9, the insulation 13 composed of ceramic fiber packs 30 is attached to the inside of the cover plate 10, which has been tried and tested with profiled rails 12, leaving pipe stubs 31 attached to the cover plate 10 free, through which the support bolts 16 of the removable heat shield H engage for wedging plug sleeves 32 fastened to the cover plate 10.

Wie insbesondere aus Figur 8 ersichtlich, hat das perforierte, bzw. mit Entdampfungslöchern versehene Tragblech 15 des Hitzeschildes H oberseitig hohlzylindrische, in die Rohrstutzen 31 passende Sockel 34, in denen die Tragbolzen 16 in planer Ebene beweglich lagern. Unterseitig dagegen ist das Tragblech 15 mit Spreizstiften 35 schachbrettartig besetzt, zum Festhalten einer keramischen Fasermatte 36, einer Ölpapier- oder Kunststoffolie 37 sowie der Feuerbetonschicht 14, wobei die Positionen 36, 37 und 14 von einer Umfangszarge 39 des Bleches 15 eingepaßt sind. Bei größerer Längenabmessung des Deckels W ist der Hitzeschild H gemäß Figure 8 der Länge nach in einzeln hantier- und austauschbare Schildabschnitte 40 unterteilt, welche in Figur 8 der Einfachheit wegen dem besprochenen einstückigen Hitzeschild H entsprechende Bezugszeichen tragen. In diesem Sinne ist der Hitzeschild H bzw. sind die durch die Querteilung erhaltenen Schildabschnitte 40 an den Zargen 39 gegenüber dem Deckelmetall bzw. untereinander mittels Umfangsdichtungen 41 aus keramischem Material abgedichtet.As can be seen in particular from FIG. 8, the perforated support plate 15 of the heat shield H, provided with evaporation holes, has hollow-cylindrical bases 34 on the upper side which fit into the pipe socket 31 and in which the support bolts 16 are movably mounted in a plane plane. On the other hand, the support plate 15 is equipped with expansion pins 35 in a checkerboard manner, for holding a ceramic fiber mat 36, an oil paper or plastic film 37 and the refractory concrete layer 14, the positions 36, 37 and 14 being fitted by a peripheral frame 39 of the plate 15. In the case of a larger length dimension of the cover W, the heat shield H according to FIG. 8 is subdivided lengthwise into individually interchangeable and interchangeable shield sections 40, which in FIG. 8 have corresponding reference numerals for simplicity because of the one-piece heat shield H discussed. In this sense, the heat shield H or the shield sections 40 obtained by the transverse division on the frames 39 are sealed off from the cover metal or from one another by means of peripheral seals 41 made of ceramic material.

Zwecks planbeweglicher Anordnung des Hitzeschildes H lagert jeder Tragbolzen 16 mit einem Bund 42 in einer Reinigungsöffnungen 43 aufweisenden Toleranzkammer 44 des Sockels 34, dessen Deckscheibe 45 bei der Einbringung des Tragbolzens 16 verschweißt wird.For the purpose of a moveable arrangement of the heat shield H, each support bolt 16 is supported by a collar 42 in a tolerance chamber 44 of the base 34, which has cleaning openings 43 and whose cover plate 45 is welded when the support bolt 16 is inserted.

Gegenteilig zu den gleichlängigen Bolzen 16 gibt es neben den mehrheitlich vorgesehenen, unterhalb der Toleranzkammern 44 mit feuerfestem Granulat 46 gefüllten Sockeln 34 solche, die im Bereich des Spaltes 20 um die Spaltbreite verkürzt sind. Dort, im Spaltbereich, ist die Dicke der Isolierung 13 entsprechend verringert und der Aufsetzrahmen 7 des Deckels W durch die mit feuerfesten Schutzhülsen 47 geschützten Stützen 21 ersetzt (vgl. Figur 6). Die vorteilhaft aus Feuerbeton vorgefertigten Hülsen 47 sind Bestandteil des Hitzeschildes H bzw. der Schildabschnitte 40 und greifen beim Auflegen des Deckels W auf die Boardfläche 22 des Verteilers V in Ausnehmungen 48 der diese Fläche im Bereich des Spaltes 2 überziehenden Schutzschicht 23, wobei eine Abdichtung mit keramischer Faserkordel 49 erfolgt.In contrast to the bolts 16 of the same length, in addition to the majority of the bases 34, which are provided below the tolerance chambers 44 and are filled with refractory granules 46, bases 34 are shortened by the gap width in the area of the gap 20. There, in the gap area, the thickness of the insulation 13 is reduced accordingly and the mounting frame 7 of the Cover W replaced by supports 21 protected with refractory protective sleeves 47 (see FIG. 6). The sleeves 47, which are advantageously prefabricated from refractory concrete, are part of the heat shield H or the shield sections 40 and, when the cover W is placed on the board surface 22 of the distributor V, engage in recesses 48 in the protective layer 23 covering this surface in the region of the gap 2, with a seal being provided ceramic fiber cord 49.

Aus Figur 7 wird die Ausbildung der Eingießöffnung 9 an einem am Deckelblech 10 befestigten Blechkragen 50 deutlich, an dessen Außenseite die Isolierung 13 endet, während der Hitzeschild H einen dem Kragenprofil entsprechenden Durchstich 51 hat. Innenseitig des Kragens 50 besteht die Öffnungsauskleidung 19, ähnlich dem Hitzeschild H, aus einer Fasermatte 36 einer Folie 37 und aus Feuerbeton 14, der auch die Einfüllseite der Eingießöffnung 9 einschließt.7 shows the formation of the pouring opening 9 on a sheet metal collar 50 fastened to the cover sheet 10, on the outside of which the insulation 13 ends, while the heat shield H has a puncture 51 corresponding to the collar profile. On the inside of the collar 50, the opening lining 19, similar to the heat shield H, consists of a fiber mat 36 of a film 37 and of refractory concrete 14, which also includes the filling side of the pouring opening 9.

Ungleich aufgebaut sind die Brenneröffnungen 8, deren im Umriß oval ausgebildete am Deckelblech 10 befestigte und mit keramischem Fasermaterial 54 ausgefütterte Kragenbleche 55 die Brennersteine 18 aufnehmen, wie an den Ovalseiten 56 eine Nut 57 haben, in die eine Haltelasche 58 je einer Haltevorrichtung 59 hineinpaßt (Figur 11). Die Vorrichtungen 59 sind, von der Feuerbetonschicht umgeben, am Tragblech 15 des Hitzeschildes H disponiert, indem ein dort mit Abstand um die Ovalseiten 56 befestigter Blechsteg 60 in Quermuffen 61 Steckstifte 62 mit Splinten 63 trägt, die durch Bohrungen 64 des Tragbleches 15 und der Haltelasche 58 durchgesteckt und zur Verbindung beider Teile aufgespreizt sind. Demgemäß können nach Aufbrechen der Feuerbetonschicht 14 die Vorrichtungen 59 geöffnet und die Brennersteine 18 im Hitzeschild H ersetzt werden. Danach läßt sich der aufgebrochene Feuerbeton leicht erneuern.The burner openings 8, whose collar plates 55 are oval in shape and fastened to the cover plate 10 and lined with ceramic fiber material 54, accommodate the burner blocks 18, as have a groove 57 on the oval sides 56, into which a retaining tab 58 fits a holding device 59 ( Figure 11). The devices 59, surrounded by the refractory concrete layer, are arranged on the support plate 15 of the heat shield H, in that a sheet metal web 60 fastened there at a distance around the oval sides 56 in cross sleeves 61 carries pins 62 with split pins 63, which pass through holes 64 in the support plate 15 and the retaining tab 58 inserted and spread to connect the two parts. Accordingly, after breaking up the refractory concrete layer 14, the devices 59 can be opened and the burner blocks 18 in the heat shield H can be replaced. Then the broken refractory concrete can be easily renewed.

Jeder Brennerstein 18 ist bei entferntem Brenner mit dem eingangs angeführten Stopfen 25 verschließbar, der nach Figur 12 aus einem den Hantierungsschacht 24 tragenden Armierungstopf 67 und einer außenseitigen feuerfesten Verkleidung besteht. Dieser ist in Anlehnung an den Hitzeschild H an Spreizstiften 35 des Armierungstopfes 56 durch eine keramische Fasermatte 36, eine Folie 37 und eine Feuerbetonschicht 38 gebildet.When the burner is removed, each burner block 18 can be closed with the plug 25 mentioned at the beginning, which, according to FIG. 12, consists of a reinforcement pot 67 carrying the handling shaft 24 and an outside refractory lining. Based on the heat shield H on expansion pins 35 of the reinforcement pot 56, this is formed by a ceramic fiber mat 36, a film 37 and a refractory concrete layer 38.

Der beschriebene Deckel W wird mit seinem Entleerungsspalt 20 besonderen Betriebsverhältnissen gerecht. Im allgemeinen gilt die erfindungsgemäße Auskleidung für Deckel, die keinen seitlichen Entleerungsspalt haben. Desweiteren wird die erfindungsgemäße Auskleidung auch metallurgischen Gefäßen gerecht, die nicht in Stranggießanlagen eingesetzt, aber ähnlichen Betriebsbedingungen unterworfen sind. The described cover W with its emptying gap 20 is suitable for special operating conditions. In general, the lining according to the invention applies to lids which have no lateral emptying gap. Furthermore, the lining according to the invention also does justice to metallurgical vessels which are not used in continuous casting plants but are subject to similar operating conditions.

Claims (12)

1. Feuerfeste Auskleidung für Deckel metallurgischer Gefäße, insbesondere für einen bei Stranggießanlagen eingesetzten Warmverteiler, dessen innenseitig mit feuerfestem Material ausgekleideter Deckel mit Brenneröffnungen versehen ist, dadurch gekennzeichnet, daß im Deckel (W) vor einer Isolierung (13) ein am Deckelblech (10) mittels Traggliedern (16, 34) abnehmbar und plan beweglich gehaltener Hitzeschild (H) unter Einfügen einer elastischen Umfangsdichtung (41) angeordnet ist.1. Fireproof lining for the lid of metallurgical vessels, in particular for a heat distributor used in continuous casting plants, the inside of which is lined with fireproof material with burner openings, characterized in that in the lid (W) in front of an insulation (13) a on the cover plate (10) is arranged by means of support members (16, 34) removable and flat movable heat shield (H) with the insertion of an elastic peripheral seal (41). 2. Auskleidung nach Anspruch 1, dadurch gekennzeichnet, daß der Hitzeschild (H) ein feuerseitig mit feuerfestem Material (14) verkleidetes Tragblech (15) mit in Sockeln (34) plan beweglich lagernden, die Isolierung (13) durchdrängenden und am Deckelblech (10) aufgehängte Tragbolzen (16) hat.2. Liner according to claim 1, characterized in that the heat shield (H) a fire-side with refractory material (14) clad support plate (15) with planar supports in plinths (34), the insulation (13) penetrating and on the cover plate (10 ) has suspended support bolts (16). 3. Auskleidung nach Anspruch 2, dadurch gekennzeichnet, daß die Tragbolzen (16) mit einem Bund (42) in einer Toleranzkammer (44) der Sockel (34) lagern.3. Lining according to claim 2, characterized in that the support bolts (16) with a collar (42) in a tolerance chamber (44) of the base (34). 4. Auskleidung nach Anspruch 2 und 3, dadurch gekennzeichnet, daß die Tragbolzen (16) an Steckhülsen (32) des Deckelbleches (10) lösbar aufgehängt und am Blech (10) Ausnehmungen der Isolierungen (13) begrenzende, die Anordnung (16, 34) umgebende Rohrstutzen (31) vorgesehen sind.4. Lining according to claim 2 and 3, characterized in that the supporting bolts (16) on plug sleeves (32) of the cover plate (10) releasably suspended and on the plate (10) recesses of the insulation (13) delimiting the arrangement (16, 34th ) surrounding pipe socket (31) are provided. 5. Auskleidung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Isolierung (13) aus keramischen Faserpacken (30) besteht und der Hitzeschild (H) eine am Tragblech (15) unter Zwischenlegen einer keramischen Fasermatte (36) durch Stifte (35) verankerte Feuerbetonschicht (14) aufweist.5. Lining according to claim 1 and 2, characterized in that the insulation (13) consists of ceramic fiber packs (30) and the heat shield (H) on the support plate (15) with the interposition of a ceramic fiber mat (36) by pins (35) has anchored refractory concrete layer (14). 6. Auskleidung nach Anspruch 1 und den folgenden Ansprüchen, dadurch gekennzeichnet, daß am Hitzeschild (H) angeordnete Brennersteine (18) in um die Brenneröffnungen (8) am Deckelblech (10) befestigte, mit keramischem Fasermaterial (54) ausgefütterte Kragen (55) greifen.6. Lining according to claim 1 and the following claims, characterized in that on the heat shield (H) arranged burner stones (18) in the burner openings (8) on the cover plate (10) fastened with ceramic fiber material (54) lined collar (55) to grab. 7. Auskleidung nach Anspruch 6, dadurch gekennzeichnet, daß jeder Brennerstein (18) an wenigstens zwei gegenüberliegenden Stellen der Umfangsfläche von je einer am Tragblech (15) in der Feuerbetonschicht (14) angeordneten Haltervorrichtung (59) lösbar gehalten ist (Fig. 11).7. Lining according to claim 6, characterized in that each burner block (18) is detachably held at at least two opposite locations on the peripheral surface of a holder device (59) arranged on the supporting plate (15) in the refractory concrete layer (14) (Fig. 11) . 8. Auskleidung nach Anspruch 7, dadurch gekennzeichnet, daß die Haltevorrichtung (59) eine in eine Nut (57) des Brennersteines (18) greifende Haltelasche (58) mit Splintverbindungen zum Tragblech (15) aufweist.8. Lining according to claim 7, characterized in that the holding device (59) has a in a groove (57) of the burner block (18) gripping retaining tab (58) with cotter pin connections to the support plate (15). 9. Auskleidung nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Eingießöffnung (9) des Deckels (W) eine an einem Kragen (50) des Deckelbleches (10) mittels Spreizstiften (35) befestigte Öffnungsauskleidung (19) aus einer keramischen Fasermatte (36) und einer Feuerbetonschicht (14) hat.9. Lining according to claims 1 to 5, characterized in that the pouring opening (9) of the cover (W) on a collar (50) of the cover plate (10) by means of expanding pins (35) opening lining (19) made of a ceramic fiber mat (36) and a layer of refractory concrete (14). 10. Auskleidung nach den vorherigen Ansprüchen für einen Warmverteiler mit einem am Deckel (W) an einer Längsseite vorgesehenen, durch Deckelstützen (21) unterteilten Entleerungsspalt (20), dadurch gekennzeichnet, daß dem Hitzeschild (H) die Stützen (21) umgebende feuerfeste Schutzhülsen (47) zugeordnet sind, die in Ausnehmungen (48) einer auf der Boardfläche (22) des Verteilers (V) aufgebrachten feuerfesten Schutzchicht (23) greifen.10. Lining according to the preceding claims for a heat distributor with a provided on the cover (W) on one long side, by cover supports (21) divided emptying gap (20), characterized in that the heat shield (H) supports (21) surrounding refractory protective sleeves (47) are assigned, which engage in recesses (48) of a refractory protective layer (23) applied to the board surface (22) of the distributor (V). 11. Auskleidung nach Anspruch 1 und den folgenden Ansprüchen, dadurch gekennzeichnet, daß der Hitzeschild (H) in Schildabschnitte (40) mit eigenen Umfangsdichtungen (41) längs unterteilt ist.11. Lining according to claim 1 and the following claims, characterized in that the heat shield (H) is divided longitudinally into shield sections (40) with their own peripheral seals (41). 12. Auskleidung nach den Ansprüchen 1 bis 11, dadurch gekennzeichnet, daß das Tragblech (15) des Hitzeschildes (H) bzw. eines Schildabschnittes (40) die Feuerbetonschicht (14) einfassende Umfangszargen (39) aufweist, an denen Umfangsdichtungen (41), vorzugsweise Abdichtungschnüre, aus keramischer Faser vorgesehen sind.12. Lining according to claims 1 to 11, characterized in that the support plate (15) of the heat shield (H) or a shield section (40) has the fire-concrete layer (14) enclosing peripheral frames (39) on which peripheral seals (41), preferably sealing cords, made of ceramic fiber are provided.
EP87109901A 1986-10-14 1987-07-09 Refractory lining, especially for tundish covers Expired - Lifetime EP0267366B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109901T ATE53520T1 (en) 1986-10-14 1987-07-09 REFRACTORY LINING, PARTICULARLY FOR HEAT MANIFOLD COVERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3634829 1986-10-14
DE19863634892 DE3634892A1 (en) 1986-10-14 1986-10-14 FIRE RESISTANT LINING, ESPECIALLY FOR LID OF INTERMEDIATE CONTAINERS

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EP0267366A1 true EP0267366A1 (en) 1988-05-18
EP0267366B1 EP0267366B1 (en) 1990-06-13

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EP87109901A Expired - Lifetime EP0267366B1 (en) 1986-10-14 1987-07-09 Refractory lining, especially for tundish covers

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EP (1) EP0267366B1 (en)
AT (1) ATE53520T1 (en)
DE (2) DE3634892A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003723A3 (en) * 1989-03-03 1992-06-02 Rech S Et Dev Desaar Sa Cover of a continuous casting distributor
FR2764368A1 (en) * 1997-06-06 1998-12-11 Lorraine Laminage Anchoring system for refractory lining of iron and steel-making equipment
CN110181032A (en) * 2019-05-27 2019-08-30 武汉科技大学 A kind of metallurgy backpack cover

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814408A (en) * 1970-12-18 1974-06-04 Concast Ag Cover for casting vessels in continuous casting machines
FR2253586A1 (en) * 1973-12-11 1975-07-04 Vallak Enn
GB2079422A (en) * 1980-06-30 1982-01-20 Johns Manville Thermal insulation by multi layer fibrous block
DE3231474A1 (en) * 1982-08-25 1984-03-01 Plibrico Co GmbH, 4000 Düsseldorf Peephole plug
FR2536317A1 (en) * 1982-11-19 1984-05-25 Wurth Paul Sa PROTECTIVE DEVICE FOR CASTING POCKET COVERS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814408A (en) * 1970-12-18 1974-06-04 Concast Ag Cover for casting vessels in continuous casting machines
FR2253586A1 (en) * 1973-12-11 1975-07-04 Vallak Enn
GB2079422A (en) * 1980-06-30 1982-01-20 Johns Manville Thermal insulation by multi layer fibrous block
DE3231474A1 (en) * 1982-08-25 1984-03-01 Plibrico Co GmbH, 4000 Düsseldorf Peephole plug
FR2536317A1 (en) * 1982-11-19 1984-05-25 Wurth Paul Sa PROTECTIVE DEVICE FOR CASTING POCKET COVERS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 16 (M-187)[1161], 22. Januar 1983; & JP-A-57 171 567 (AIKOO K.K.) 22-10-1982 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003723A3 (en) * 1989-03-03 1992-06-02 Rech S Et Dev Desaar Sa Cover of a continuous casting distributor
FR2764368A1 (en) * 1997-06-06 1998-12-11 Lorraine Laminage Anchoring system for refractory lining of iron and steel-making equipment
CN110181032A (en) * 2019-05-27 2019-08-30 武汉科技大学 A kind of metallurgy backpack cover

Also Published As

Publication number Publication date
DE3763154D1 (en) 1990-07-19
DE3634892C2 (en) 1988-07-28
DE3634892A1 (en) 1988-04-28
EP0267366B1 (en) 1990-06-13
ATE53520T1 (en) 1990-06-15

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