EP0471245A1 - Annular gap refractory filling in a metallurgical vessel - Google Patents

Annular gap refractory filling in a metallurgical vessel Download PDF

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Publication number
EP0471245A1
EP0471245A1 EP91112934A EP91112934A EP0471245A1 EP 0471245 A1 EP0471245 A1 EP 0471245A1 EP 91112934 A EP91112934 A EP 91112934A EP 91112934 A EP91112934 A EP 91112934A EP 0471245 A1 EP0471245 A1 EP 0471245A1
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EP
European Patent Office
Prior art keywords
annular gap
layer
built
refractory
volume
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Granted
Application number
EP91112934A
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German (de)
French (fr)
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EP0471245B1 (en
Inventor
Raimund Brückner
Hans Rothfuss
Manfred Berndt
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Didier Werke AG
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Didier Werke AG
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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
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • 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
    • F27D2003/0038—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising shakers
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/161—Introducing a fluid jet or current into the charge through a porous element

Definitions

  • the invention relates to a refractory filling of an annular gap which is provided between a molded part, in particular a gas purging plug, installed in an opening of a refractory lining of a metallurgical vessel, and the lining.
  • the annular gap between a refractory lining of a metallurgical vessel and a gas purging plug to be inserted into it is mortared in order to ensure the necessary tight fit of the gas purging plug in the refractory lining, in particular in a perforated brick provided on it.
  • This mortaring is a complex, manual process. On the one hand, it must take place under spatially and thermally difficult conditions. On the other hand, the annular gap must be sealed all around with certainty, otherwise leaks occur during operation, which can lead to the melt escaping from the vessel.
  • DE-OS 21 02 059 describes a slide closure for a metallurgical vessel.
  • a fireproof sleeve is mortared into a bottom stone of the vessel.
  • a gas purging plug of the vessel is not shown.
  • a component is covered with a conical sleeve made of refractory, ceramic fibers.
  • the object of the invention is to propose a filling of the type mentioned, which is constructed so that the molded part in the refractory lining of the metallurgical vessel can be easily assembled on the one hand and on the other hand so that the necessary seal is created.
  • the above object is achieved in the case of a filling of the type mentioned at the outset in that the filling is a prefabricated, deformable installation layer which is adapted to the shape or the volume of the annular gap and can be fixed on the latter or in the opening before the molded part is installed is.
  • the filling is a prefabricated, deformable installation layer which is adapted to the shape or the volume of the annular gap and can be fixed on the latter or in the opening before the molded part is installed is.
  • the deformation of the built-in layer in the shape of the annular gap also ensures that the filling can be easily manufactured or assembled by being fixed in the opening or on the molded part either before the molded part is inserted. As a result, the filling comes automatically into the desired position filling the annular gap when the molded part is inserted, without the need for an additional operation.
  • the filling can also serve to fasten the molded part in the opening.
  • the installation layer is preferably preformed in accordance with the conical ring shape of the annular gap before installation.
  • the built-in layer consists of a mass which expands at the operating temperature and is packaged in a casing adapted to the shape or the volume of the annular gap, the volume of the built-in layer preferably being smaller than that of the annular gap.
  • the installation layer expands all around, which creates the necessary seal.
  • Raw materials with high thermal expansion such as e.g. MgO used, or raw materials when they react with each other there is sufficient elongation, such as e.g. is the case with spinel formation.
  • the mass for the embodiment of the invention must not shrink again when the temperature is applied.
  • the built-in layer consists of a plastically deformable mass which is packaged in a casing adapted to the shape or volume of the annular gap, the volume of the built-in layer being equal to or greater than that of the annular gap.
  • the built-in layer assumes a shape that completely fills the annular gap. In this case too, tolerances between the shape of the opening and the molded part are compensated. Tolerances of the casing are also compensated for.
  • the built-in layer consists of a compressible ceramic fiber material which is preformed in accordance with the shape of the annular gap and has a volume which is equal to or greater than that of the annular gap.
  • a cover for the installation layer can, but need not be provided. At the Inserting the molded part into the opening of the lining compresses the installation layer and then fills the annular gap. Their volume is preferably greater than that of the annular gap before installation.
  • the shell of the built-in layer is flexible in such a way that it deforms to fit the annular gap when the molded part is inserted into the opening of the lining. It can also tear open.
  • the casing consists of an organic material, such as paper or plastic, or of a metallic foil.
  • the casing is burnt or sintered so that it does not impair the desired tightness of the annular gap.
  • the built-in layer can also be removed particularly easily from the perforated brick after the gas flushing plug has worn out. This is obviously achieved because of the shell forming a separating layer, but without adversely affecting the connection strength during operation.
  • the built-in layer and the gas purging plug form a prefabricated structural unit. This can then be transported to the installation site of the metallurgical vessel and inserted into its opening.
  • the structural unit, consisting of the built-in layer and the gas purging plug can also be packaged in a common covering comprising the built-in layer and the gas purging plug.
  • a metallurgical vessel (1) has a refractory lining (2) into which a perforated brick (3) is inserted.
  • the perforated brick (3) is provided with a conical opening (4).
  • An outer jacket (5) is arranged on the outside of the vessel (1).
  • the opening (4) is provided for the use of a frustoconical gas purge cone (6). This is shown in Figure 4 and shown in dashed lines in Figure 1.
  • a conical annular gap (7) results which must be filled out.
  • An installation layer (8) is provided. This is prefabricated in the shape of the annular gap (7). In its prefabricated state, the built-in layer (8) does not exactly have the shape of the annular gap (7), but is designed in such a way that when the gas purge cone (6) is installed in the opening (4), the shape of the annular gap (7 ) adapts.
  • the built-in layer (8) preformed in a conical ring shape consists of a mass (9) which withstands the temperature occurring during operation of the vessel (1).
  • the mass (9) of the built-in layer (8) is enclosed in a casing (10) if the mass (9) is not sufficiently stable in shape or volume prior to the installed state.
  • the casing (10) consists, for example, of paper, a plastic film or a metallic film.
  • the casing (10) is in any case designed in such a way that when the gas purging cone (6) is pushed into the opening (4) it does not impede the complete filling of the annular gap (7) then created by the mass (9).
  • the envelope (10) can optionally be provided with corresponding predetermined breaking points, in particular along a predetermined tear line at its front edges (11 or 12).
  • the gas purging cone (6) carrying the installation layer (8) is inserted into the opening (4) in the correct position at the installation location.
  • the then created annular gap (7) fills the built-in layer (8).
  • the built-in layer (8) is first inserted into the opening (4) and fixed in it, and only then is the gas purge cone (6) inserted.
  • the mass (9) of the built-in layer (8) can consist of a mass which, after the gas purging cone (6) has been inserted into the opening (4), expands when the lining (2) is heated, so that it inflates the annular gap ( 7) Fills out completely.
  • the mass (9) can also be chosen so that it is plastically deformable at least when the gas purging cone (6) is inserted into the opening (4).
  • the built-in layer (8) can also consist of ceramic fiber material that can be compressed when the gas purging cone (6) is inserted into the perforated brick (3).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

In a metallurgical vessel, the annular gap (7) between a refractory lining (2) and a gas bubble brick (6) is to be filled in a simple manner to ensure leak-tightness. The filling provided is a deformable built-in layer (8), prepared beforehand, which is matched to the shape or volume of the annular gap (7). <IMAGE>

Description

Die Erfindung betrifft eine feuerfeste Füllung eines Ringspaltes, der zwischen einem in eine Öffnung einer feuerfesten Auskleidung eines metallurgischen Gefäßes eingebauten Formteil, insbesondere Gasspülstein, und der Auskleidung vorgesehen ist.The invention relates to a refractory filling of an annular gap which is provided between a molded part, in particular a gas purging plug, installed in an opening of a refractory lining of a metallurgical vessel, and the lining.

Bekanntermaßen wird der Ringspalt zwischen einer feuerfesten Auskleidung eines metallurgischen Gefäßes und einem in diese einzusetzenden Gasspülstein ausgemörtelt, um den notwendigen Dichtsitz des Gasspülsteins in der feuerfesten Auskleidung, insbesondere in einem an ihr vorgesehenen Lochstein zu gewährleisten. Dieses Ausmörteln ist ein aufwendiger, manueller Arbeitsgang. Denn einerseits muß er unter räumlich und thermisch erschwerten Bedingungen erfolgen. Andererseits muß der Ringspalt ringsum mit Sicherheit gleichmäßig abgedichtet werden, da sonst im Betrieb Undichtigkeiten auftreten, die zu einem Austritt der Schmelze aus dem Gefäß führen können.As is known, the annular gap between a refractory lining of a metallurgical vessel and a gas purging plug to be inserted into it is mortared in order to ensure the necessary tight fit of the gas purging plug in the refractory lining, in particular in a perforated brick provided on it. This mortaring is a complex, manual process. On the one hand, it must take place under spatially and thermally difficult conditions. On the other hand, the annular gap must be sealed all around with certainty, otherwise leaks occur during operation, which can lead to the melt escaping from the vessel.

In der DE 32 01 531 A1 ist eine Fugenschicht eines feuerfesten Mauerwerks eines Zementdrehrohr ofens beschrieben. Die Fugenschicht besteht aus einer keramischen Fasermatte.DE 32 01 531 A1 describes a joint layer of a refractory masonry of a cement rotary kiln. The joint layer consists of a ceramic fiber mat.

In der DE 31 05 531 C2 ist ein Verfahren zur Herstellung von feuerfesten Fasermassen und ihre Verwendung als Dehnfugenfüllmaterial beschrieben. Solche Dehnfugen sind zwar bei der Ausmauerung von Drehrohröfen, nicht jedoch bei einem Gasspülstein eines metallurgischen Gefäßes vorgesehen.DE 31 05 531 C2 describes a process for the production of refractory fiber masses and their use as expansion joint filling material. Such expansion joints are provided for the lining of rotary kilns, but not for a gas purging plug in a metallurgical vessel.

In der DE-OS 21 02 059 ist ein Schieberverschluß für ein metallurgisches Gefäß beschrieben. In einen Bodenstein des Gefäßes ist eine feuerfeste Hülse eingemörtelt. Ein Gasspülstein des Gefäßes ist nicht gezeigt. Im Schieberverschluß ist ein Bauteil mit einer konischen Hülse aus feuerfesten, keramischen Fasern überzogen.DE-OS 21 02 059 describes a slide closure for a metallurgical vessel. A fireproof sleeve is mortared into a bottom stone of the vessel. A gas purging plug of the vessel is not shown. In the slide closure, a component is covered with a conical sleeve made of refractory, ceramic fibers.

Aufgabe der Erfindung ist es, eine Füllung der eingangs genannten Art vorzuschlagen, die so aufgebaut ist, daß sich das Formteil in der feuerfesten Auskleidung des metallurgischen Gefäßes einerseits einfach und andererseits so montieren läßt, daß die notwendige Abdichtung entsteht.The object of the invention is to propose a filling of the type mentioned, which is constructed so that the molded part in the refractory lining of the metallurgical vessel can be easily assembled on the one hand and on the other hand so that the necessary seal is created.

Nach der Erfindung ist obige Aufgabe bei einer Füllung der eingangs genannten Art dadurch gelöst, daß die Füllung eine vorgefertigte, verformbare Einbauschicht ist, die der Form bzw. dem Volumen des Ringspaltes angepaßt ist und vor dem Einbau des Formteils an diesem oder in der Öffnung festlegbar ist. Dadurch erübrigen sich Mörtelarbeiten beim Einsetzen des Formteils, insbesondere Gasspülsteins, in die feuerfeste Auskleidung des metallurgischen Gefäßes. Die in der Form bzw. dem Volumen des vorgesehenen Ringspalts vorgefertigte Einbauschicht stellt sicher, daß der Ringspalt im Einbauzustand des Formteils gleichmäßig mit der Einbauschicht ausgefüllt ist. Deren beim oder nach dem Einsetzen des Formteils in die Öffnung der feuerfesten Auskleidung noch bestehende Verformbarkeit gewährleistet eine sichere Rundumdichtung des Ringspalts im Betriebszustand.According to the invention, the above object is achieved in the case of a filling of the type mentioned at the outset in that the filling is a prefabricated, deformable installation layer which is adapted to the shape or the volume of the annular gap and can be fixed on the latter or in the opening before the molded part is installed is. This eliminates the need for mortar work when inserting the molded part, in particular a gas purging plug, into the refractory lining of the metallurgical vessel. The built-in layer prefabricated in the shape or volume of the provided annular gap ensures that the annular gap is evenly filled with the built-in layer when the molded part is in the installed state. Their deformability, which remains when or after inserting the molded part into the opening of the refractory lining, ensures a secure all-round seal of the annular gap in the operating state.

Durch die Verformung der Einbauschicht in der Form des Ringspalts ist auch erreicht, daß sich die Füllung einfach herstellen bzw. montieren läßt, indem sie entweder vor dem Einsetzen des Formteils in der Öffnung oder an dem Formteil festgelegt wird. Dadurch kommt die Füllung beim Einsetzen des Formteils von selbst in die gewünschte, den Ringspalt ausfüllende Lage, ohne daß hierfür ein zusätzlicher Arbeitsgang erforderlich ist. Die Füllung kann auch zusätzlich der Befestigung des Formteils in der Öffnung dienen.The deformation of the built-in layer in the shape of the annular gap also ensures that the filling can be easily manufactured or assembled by being fixed in the opening or on the molded part either before the molded part is inserted. As a result, the filling comes automatically into the desired position filling the annular gap when the molded part is inserted, without the need for an additional operation. The filling can also serve to fasten the molded part in the opening.

Ist der Gasspülstein ein Gasspülkegel und weist dementsprechend der Ringspalt eine konische Form auf, dann ist vorzugsweise die Einbauschicht entsprechend der konischen Ringform des Ringspalts schon vor dem Einbau vorgeformt.If the gas purging plug is a gas purging cone and, accordingly, the annular gap has a conical shape, then the installation layer is preferably preformed in accordance with the conical ring shape of the annular gap before installation.

In einer Ausgestaltung der Erfindung besteht die Einbauschicht aus einer sich bei Betriebstemperatur blähenden Masse, die in einer der Form bzw. dem Volumen des Ringspalts angepaßten Hülle verpackt ist, wobei das Volumen der Einbauschicht vorzugsweise kleiner ist als das des Ringspalts. Beim Aufheizen des metallurgischen Gefäßes, in dessen Öffnung das Formteil eingesetzt ist, dehnt sich die Einbauschicht rundum auf, wodurch die notwendige Abdichtung entsteht. Dabei werden für solche Massen bevorzugt Rohstoffe mit hoher thermischer Dehnung, wie z.B. MgO eingesetzt, oder Rohstoffe bei deren Reaktion miteinander sich eine ausreichende Dehnung ergibt, wie das z.B. bei der Spinell-Bildung der Fall ist. Die Masse für diesen Fall der Ausgestaltung der Erfindung darf jedenfalls bei Temperaturbeaufschlagung nicht wieder schwinden.In one embodiment of the invention, the built-in layer consists of a mass which expands at the operating temperature and is packaged in a casing adapted to the shape or the volume of the annular gap, the volume of the built-in layer preferably being smaller than that of the annular gap. When the metallurgical vessel, in the opening of which the molded part is inserted, heats up, the installation layer expands all around, which creates the necessary seal. Raw materials with high thermal expansion, such as e.g. MgO used, or raw materials when they react with each other there is sufficient elongation, such as e.g. is the case with spinel formation. In any case, the mass for the embodiment of the invention must not shrink again when the temperature is applied.

Bei einer anderen Ausgestaltung der Erfindung besteht die Einbauschicht aus einer plastisch verformbaren Masse, die in einer der Form bzw. dem Volumen des Ringspalts angepaßten Hülle verpackt ist, wobei das Volumen der Einbauschicht gleich oder größer als das des Ringspalts ist. Dabei nimmt die Einbauschicht beim Einsetzen des Formteils in die Öffnung eine den Ringspalt vollständig ausfüllende Gestalt an. Auch in diesem Fall werden Toleranzen zwischen der Form der Öffnung und des Formteils ausgeglichen. Ebenso werden Toleranzen der Hülle ausgeglichen.In another embodiment of the invention, the built-in layer consists of a plastically deformable mass which is packaged in a casing adapted to the shape or volume of the annular gap, the volume of the built-in layer being equal to or greater than that of the annular gap. When the molded part is inserted into the opening, the built-in layer assumes a shape that completely fills the annular gap. In this case too, tolerances between the shape of the opening and the molded part are compensated. Tolerances of the casing are also compensated for.

Bei einer anderen Ausgestaltung der Erfindung besteht die Einbauschicht aus einem komprimierbaren, entsprechend der Form des Ringspalts vorgeformten keramischen Fasermaterial und weist ein Volumen auf, das gleich oder großer als das des Ringspalts ist. Eine Hülle für die Einbauschicht kann, muß jedoch nicht vorgesehen sein. Beim Einsetzen des Formteils in die Öffnung der Auskleidung wird die Einbauschicht zusammengedrückt und füllt dann den Ringspalt aus. Vorzugsweise ist ihr Volumen vor dem Einbau größer als das des Ringspalts.In another embodiment of the invention, the built-in layer consists of a compressible ceramic fiber material which is preformed in accordance with the shape of the annular gap and has a volume which is equal to or greater than that of the annular gap. A cover for the installation layer can, but need not be provided. At the Inserting the molded part into the opening of the lining compresses the installation layer and then fills the annular gap. Their volume is preferably greater than that of the annular gap before installation.

Die Hülle der Einbauschicht ist in der weise nachgiebig, daß sie sich beim Einschieben des Formteils in die Öffnung der Auskleidung an den Ringspalt anpassend verformt. Sie kann dabei auch aufreißen.The shell of the built-in layer is flexible in such a way that it deforms to fit the annular gap when the molded part is inserted into the opening of the lining. It can also tear open.

In Weiterbildung der Erfindung besteht die Hülle aus einem organischen Material, wie Papier oder Kunststoff, oder aus einer metallischen Folie. Beim Betrieb des metallurgischen Gefäßes ist die Hülle verbrannt oder versintert, so daß sie die gewünschte Dichtheit des Ringspalts nicht beeinträchtigt. Gleichzeitig läßt sich feststellen, daß sich in diesem Falle die Einbauschicht nach den Verschleiß des Gasspülsteins auch besonders leicht aus dem Lochstein entfernen läßt. Dies wird offensichtlich wegen der eine Trennschicht bildenden Hülle erreicht, ohne dabei aber die Verbindungsfestigkeit im Betrieb negativ zu beeinflussen.In a further development of the invention, the casing consists of an organic material, such as paper or plastic, or of a metallic foil. When the metallurgical vessel is in operation, the casing is burnt or sintered so that it does not impair the desired tightness of the annular gap. At the same time, it can be stated that in this case the built-in layer can also be removed particularly easily from the perforated brick after the gas flushing plug has worn out. This is obviously achieved because of the shell forming a separating layer, but without adversely affecting the connection strength during operation.

Es kann auch vorgesehen sein, daß die Einbauschicht und der Gasspülstein eine vorgeferigte Baueinheit bilden. Diese läßt sich dann zum Aufstellungsort des metallurgischen Gefäßes transportieren und in dessen Öffnung einschieben. Die Baueinheit, bestehend aus Einbauschicht und Gasspülstein läßt sich auch in einer gemeinsamen, die Einbauschicht und den Gasspülstein umfassenden Umhüllung verpacken.It can also be provided that the built-in layer and the gas purging plug form a prefabricated structural unit. This can then be transported to the installation site of the metallurgical vessel and inserted into its opening. The structural unit, consisting of the built-in layer and the gas purging plug, can also be packaged in a common covering comprising the built-in layer and the gas purging plug.

Ein Ausführungsbeispiel der Erfindung ergibt sich aus der folgenden Zeichnungsbeschreibung. Es zeigen:

  • Figur 1 ein metallurgisches Gefäß im Bereich einer Öffnung einer feuerfesten Auskleidung im Schnitt,
  • Figur 2 eine vorgefertigte, verformbare Einbauschicht in einem Figur 1 entsprechenden Schnitt,
  • Figur 3 eine Aufsicht der Einbauschicht nach Figur 2 längs der Linie 111-111 und
  • Figur 4 einen Gasspülkegel für das metallurgische Gefäß in einem Figur 1 entsprechenden Schnitt, wobei hier nicht die Form der Einbauschicht, sondern deren Volumen dem Ringspalt angepaßt ist.
An embodiment of the invention results from the following description of the drawings. Show it:
  • FIG. 1 shows a section of a metallurgical vessel in the region of an opening of a refractory lining,
  • FIG. 2 shows a prefabricated, deformable installation layer in a section corresponding to FIG. 1,
  • Figure 3 is a plan view of the installation layer of Figure 2 along the line 111-111 and
  • FIG. 4 shows a gas purging cone for the metallurgical vessel in a section corresponding to FIG. 1, with the volume here not being adapted to the annular gap, but rather the shape of the built-in layer.

Ein metallurgisches Gefäß (1) weist eine feuerfeste Auskleidung (2) auf, in die ein Lochstein (3) eingesetzt ist. Der Lochstein (3) ist mit einer konischen Öffnung (4) versehen. Ein Außenmantel (5) ist außen am Gefäß (1) angeordnet.A metallurgical vessel (1) has a refractory lining (2) into which a perforated brick (3) is inserted. The perforated brick (3) is provided with a conical opening (4). An outer jacket (5) is arranged on the outside of the vessel (1).

Die Öffnung (4) ist zum Einsatz eines kegelstumpfförmigen Gasspülkegels (6) vorgesehen. Dieser ist in Figur 4 gezeigt und in Figur 1 strichliert dargestellt. Beim Einsetzen des Gasspülkegels (6) in die Öffnung (4) ergibt sich ein konischer Ringspalt (7), der ausgefüllt werden muß.The opening (4) is provided for the use of a frustoconical gas purge cone (6). This is shown in Figure 4 and shown in dashed lines in Figure 1. When the gas purging cone (6) is inserted into the opening (4), a conical annular gap (7) results which must be filled out.

Es ist eine Einbauschicht (8) vorgesehen. Diese ist in der Gestalt des Ringspalts (7) vorgefertigt. Die Einbauschicht (8) weist in ihrem vorgefertigten Zustand nicht exakt die Form des Ringspalts (7) auf, sondern ist so gestaltet, daß sie sich beim Einbau des Gasspülkegels (6) in die Öffnung (4) der Gestalt des dann entstehenden Ringspalts (7) anpaßt. Die in konischer Ringgestalt vorgeformte Einbauschicht (8) besteht aus einer Masse (9), die der im Betrieb des Gefäßes (1) auftretenden Temperatur standhält.An installation layer (8) is provided. This is prefabricated in the shape of the annular gap (7). In its prefabricated state, the built-in layer (8) does not exactly have the shape of the annular gap (7), but is designed in such a way that when the gas purge cone (6) is installed in the opening (4), the shape of the annular gap (7 ) adapts. The built-in layer (8) preformed in a conical ring shape consists of a mass (9) which withstands the temperature occurring during operation of the vessel (1).

Die Masse (9) der Einbauschicht (8) ist dann, wenn die Masse (9) vor dem Einbauzustand nicht hinreichend form- bzw. volumenstabil ist, in eine Hülle (10) eingeschlossen. Die Hülle (10) besteht beispielsweise aus Papier, einer Kunststoffolie oder aus einer metallischen Folie. Die Hülle (10) ist jedenfalls so gestaltet, daß sie beim Einschieben des Gasspülkegels (6) in die Öffnung (4) das vollständige Ausfüllen des dann entstehenden Ringspalts (7) durch die Masse (9) nicht behindert. Die Hülle (10) kann gegebenenfalls mit entsprechenden Sollbruchstellen, insbesondere längs einer Sollrißlinie an ihren stirnseitigen Rändern (11 bzw. 12) versehen sein.The mass (9) of the built-in layer (8) is enclosed in a casing (10) if the mass (9) is not sufficiently stable in shape or volume prior to the installed state. The casing (10) consists, for example, of paper, a plastic film or a metallic film. The casing (10) is in any case designed in such a way that when the gas purging cone (6) is pushed into the opening (4) it does not impede the complete filling of the annular gap (7) then created by the mass (9). The envelope (10) can optionally be provided with corresponding predetermined breaking points, in particular along a predetermined tear line at its front edges (11 or 12).

Der Einbau erfolgt etwa so: Auf den Gasspülkegel (6) wird die Einbauschicht

  • (8) aufgesetzt. Dies kann bereits nach der Herstellung des Gasspülkegels (6) erfolgen, bevor dieser zu dem Gefäß (1) gebracht wird. Der Gasspülkegel
  • (6) und die Einbauschicht (8) bilden dabei eine Baueinheit. Diese kann von einer nicht näher dargestellten Umhüllung aus Papier oder Kunststoff-oder Metallfolie umschlossen sein.
The installation is carried out as follows: The installation layer is on the gas purge cone (6)
  • (8) put on. This can take place after the gas purge cone (6) has been produced before it is brought to the vessel (1). The gas purging cone
  • (6) and the built-in layer (8) form a structural unit. This can be enclosed by a wrapping made of paper or plastic or metal foil, not shown.

Der die Einbauschicht (8) tragende Gasspülkegel (6) wird am Einbauort in die Öffnung (4) lagerichtig eingeschoben. Den dann entstehenden Ringspalt (7) füllt die Einbauschicht (8) aus.The gas purging cone (6) carrying the installation layer (8) is inserted into the opening (4) in the correct position at the installation location. The then created annular gap (7) fills the built-in layer (8).

Bei einer anderen Montageweise kann auch vorgesehen sein, daß die Einbauschicht (8) zunächst in die Öffnung (4) eingesetzt und in dieser festgelegt wird und danach erst der Gasspülkegel (6) eingeschoben wird.In another mounting method, it can also be provided that the built-in layer (8) is first inserted into the opening (4) and fixed in it, and only then is the gas purge cone (6) inserted.

Die Masse (9) der Einbauschicht (8) kann aus einer Masse bestehen, die sich nach dem Einsetzen des Gasspülkegels (6) in die Öffnung (4) beim Aufheizen der Auskleidung (2) aufbläht, so daß sie durch das Aufblähen den Ringspalt (7) vollständig ausfüllt.The mass (9) of the built-in layer (8) can consist of a mass which, after the gas purging cone (6) has been inserted into the opening (4), expands when the lining (2) is heated, so that it inflates the annular gap ( 7) Fills out completely.

Die Masse (9) kann auch so gewählt sein, daß sie wenigstens beim Einschieben des Gasspülkegels (6) in die Öffnung (4) plastisch verformbar ist.The mass (9) can also be chosen so that it is plastically deformable at least when the gas purging cone (6) is inserted into the opening (4).

Die Einbauschicht (8) kann auch aus beim Einschieben des Gasspülkegels (6) in den Lochstein (3) komprimierbarem keramischem Fasermaterial bestehen.The built-in layer (8) can also consist of ceramic fiber material that can be compressed when the gas purging cone (6) is inserted into the perforated brick (3).

Claims (11)

1. Feuerfeste Füllung eines Ringspaltes, der zwischen einem in eine Öffnung einer feuerfesten Auskleidung eines metallurgischen Gefäßes eingebauten Formteil, insbesondere Gasspülstein, und der Auskleidung vorgesehen ist, dadurch gekennzeichnet, daß die Füllung eine vorgefertigte, verformbare Einbauschicht (8) ist, die der Form des Ringspaltes (7) angepaßt ist und vor dem Einbau des Formteils (6) an diesem oder in der Öffnung (4) festlegbar ist.1. Refractory filling of an annular gap, which is provided between a molded part installed in an opening of a refractory lining of a metallurgical vessel, in particular a gas purging plug, and the lining, characterized in that the filling is a prefabricated, deformable installation layer (8) which conforms to the shape of the annular gap (7) is adapted and can be fixed on the fitting or in the opening (4) before the fitting (6) is installed. 2. Feuerfeste Füllung eines Ringspaltes, der zwischen einem in eine Öffnung einer feuerfesten Auskleidung eines metallurgischen Gefäßes eingebauten Formteil, insbesondere Gasspülstein, und der Auskleidung vorgesehen ist, dadurch gekennzeichnet, daß die Füllung eine vorgefertigte, verformbare Einbauschicht (8) ist, die dem Volumen des Ringspaltes (7) angepaßt ist und vor dem Einbau des Formteils (6) an diesem oder in der Öffnung (4) festlegbar ist.2. Refractory filling of an annular gap, which is provided between a molded part installed in an opening of a refractory lining of a metallurgical vessel, in particular a gas purging plug, and the lining, characterized in that the filling is a prefabricated, deformable built-in layer (8), which is the volume of the annular gap (7) is adapted and can be fixed on the fitting or in the opening (4) before the fitting (6) is installed. 3. Feuerfeste Füllung nach Anspruch 1, dadurch gekennzeichnet, daß die Einbauschicht (8) bei einer konischen Form des Ringspaltes (7) entsprechend dessen konischer Ringform schon vor dem Einbau vorgeformt ist.3. Refractory filling according to claim 1, characterized in that the built-in layer (8) is preformed with a conical shape of the annular gap (7) corresponding to its conical ring shape before installation. 4. Feuerfeste Füllung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Einbauschicht (8) aus einer sich bei Betriebstemperatur blähenden Masse besteht, die in einer der Form bzw. dem Volumens des Ringspaltes (7) angepaßten Hülle (10) verpackt ist, wobei das Volumen der Einbauschicht (8) vorzugsweise kleiner ist als das des Ringspaltes (7).4. Refractory filling according to claim 1, 2 or 3, characterized in that the built-in layer (8) consists of an expanding material at operating temperature, which is packaged in a shape or volume of the annular gap (7) adapted casing (10) is, the volume of the built-in layer (8) is preferably smaller than that of the annular gap (7). 5. Feuerfeste Füllung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Einbauschicht (8) aus einer plastisch verformbaren Masse besteht, die in einer der Form bzw. dem Volumens des Ringspaltes (7) angepaßten Hülle (10) verpackt ist, wobei das Volumen der Einbauschicht (8) gleich oder großer als das des Ringspaltes (7) ist.5. Refractory filling according to claim 1, 2 or 3, characterized in that the built-in layer (8) consists of a plastically deformable mass which is packaged in a sleeve (10) adapted to the shape or the volume of the annular gap (7), the volume of the built-in layer (8) being equal to or greater than that of the annular gap (7). 6. Feuerfeste Füllung nach Anspruch 5, dadurch gekennzeichnet, daß die Hülle (10) beim Einbau der Einbauschicht (8) an mindestens einer Sollbruchstelle aufreißt.6. Refractory filling according to claim 5, characterized in that the sheath (10) tears open at least one predetermined breaking point when installing the built-in layer (8). 7. Feuerfeste Füllung nach einem der vorhergehenden Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die Hülle (10) aus organischem Material, wie Papier oder Kunststoff, oder aus einer metallischen Folie besteht.7. Refractory filling according to one of the preceding claims 4 to 6, characterized in that the casing (10) consists of organic material, such as paper or plastic, or of a metallic foil. 8. Feuerfeste Füllung nach Anspruch 1 oder 3, dadurch gekennzeichnet, daß die Einbauschicht (8) aus einem komprimierbaren, entsprechend der Form des Ringspaltes (7) vorgeformten keramischen Fasermaterial besteht und ein Volumen aufweist, das gleich oder größer als das des Ringspaltes ist.8. Refractory filling according to claim 1 or 3, characterized in that the built-in layer (8) consists of a compressible, according to the shape of the annular gap (7) preformed ceramic fiber material and has a volume which is equal to or greater than that of the annular gap. 9. Feuerfeste Füllung nach Anspruch 8, dadurch gekennzeichnet, daß das Fasermaterial in eine Hülle (10) eingepackt ist.9. Refractory filling according to claim 8, characterized in that the fiber material is packed in a casing (10). 10. Feuerfeste Füllung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einbauschicht (8) und der Gasspülstein (6) eine vorgefertigte Baueinheit bilden, die vorgefertigt in die Öffnung (4) der Auskleidung (2) einsetzbar ist.10. Refractory filling according to one of the preceding claims, characterized in that the built-in layer (8) and the gas purging plug (6) form a prefabricated structural unit which can be used prefabricated in the opening (4) of the lining (2). 11. Feuerfeste Füllung nach Anspruch 10, dadurch gekennzeichnet, daß die Baueinheit in einer gemeinsamen, verbrennbaren Umhüllung verpackt ist.11. Refractory filling according to claim 10, characterized in that the structural unit is packaged in a common, combustible envelope.
EP91112934A 1990-08-16 1991-08-01 Annular gap refractory filling in a metallurgical vessel Expired - Lifetime EP0471245B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025956 1990-08-16
DE4025956A DE4025956A1 (en) 1990-08-16 1990-08-16 FIREPROOF FILLING OF A RING GAP IN A METALLURGICAL TANK

Publications (2)

Publication Number Publication Date
EP0471245A1 true EP0471245A1 (en) 1992-02-19
EP0471245B1 EP0471245B1 (en) 1996-05-22

Family

ID=6412357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112934A Expired - Lifetime EP0471245B1 (en) 1990-08-16 1991-08-01 Annular gap refractory filling in a metallurgical vessel

Country Status (5)

Country Link
US (1) US5249811A (en)
EP (1) EP0471245B1 (en)
AT (1) ATE138464T1 (en)
DE (2) DE4025956A1 (en)
ES (1) ES2087931T3 (en)

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EP0566940A1 (en) * 1992-04-21 1993-10-27 Klöckner Cra Patent Gmbh A method and an apparatus for sealing tuyères in the surrounding refractory lining
EP1496312A2 (en) * 2003-07-11 2005-01-12 HDG Bavaria GmbH Heizkessel &amp; Anlagenbau Combustion chamber for a solid fuel combustion apparatus, in particular for solid biomass fuel
WO2010054853A2 (en) 2008-11-17 2010-05-20 Stopinc Aktiengesellschaft Method for exchangeably fastening a refractory purge plug or sleeve and a container for molten metal
AT14854U1 (en) * 2015-07-03 2016-07-15 Plansee Se Tank made of refractory metal

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US20030062718A1 (en) * 2001-09-28 2003-04-03 Central Sprinkler Corporation Ferrous pipe couplings and prelubricated coupling gaskets
US20110180542A1 (en) * 2010-01-22 2011-07-28 Ryan Drollinger Methods for reducing fluid loss in fluid-bearing systems
US8967245B2 (en) * 2011-05-24 2015-03-03 Baker Hughes Incorporated Borehole seal, backup and method

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US4194036A (en) * 1975-07-29 1980-03-18 Zirconal Processes Limited Module for furnace walls totally wrapped with thermally combustible material
EP0070650A1 (en) * 1981-07-16 1983-01-26 The Babcock & Wilcox Company Thermally insulative refractory compositions suitable for use for the containment of molten material
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FR571815A (en) * 1922-12-30 1924-05-23 Fours Rousseau Process for the manufacture of rapid or ordinary heating crucibles and tools for this manufacture
FR2044723A1 (en) * 1969-04-14 1971-02-26 Oglebay Norton Co Ingot mould hot top lining
FR2121862A1 (en) * 1971-01-16 1972-08-25 Didier Werke Ag
US4194036A (en) * 1975-07-29 1980-03-18 Zirconal Processes Limited Module for furnace walls totally wrapped with thermally combustible material
EP0070650A1 (en) * 1981-07-16 1983-01-26 The Babcock & Wilcox Company Thermally insulative refractory compositions suitable for use for the containment of molten material
FR2519971A1 (en) * 1982-01-20 1983-07-22 Didier Werke Ag CALCINATED MAGNESIUM AND CHROME-MAGNESIA STONE WITH JUNCTION LAYER AND MANUFACTURING METHOD
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FR2543576A1 (en) * 1983-03-30 1984-10-05 Messer Griesheim Gmbh METHOD AND INSTALLATION FOR SCANNING A METAL BATH FILLED IN PARTICULAR FROM STEEL IN A CASTING POUCH OR THE LIKE PROVIDED WITH A SHUTTER PLUG
US4538795A (en) * 1984-10-19 1985-09-03 Bate Michael D Device for introducing gas into molten metal in controlled streams

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566940A1 (en) * 1992-04-21 1993-10-27 Klöckner Cra Patent Gmbh A method and an apparatus for sealing tuyères in the surrounding refractory lining
EP1496312A2 (en) * 2003-07-11 2005-01-12 HDG Bavaria GmbH Heizkessel &amp; Anlagenbau Combustion chamber for a solid fuel combustion apparatus, in particular for solid biomass fuel
EP1496312A3 (en) * 2003-07-11 2006-11-08 HDG Bavaria GmbH Heizkessel &amp; Anlagenbau Combustion chamber for a solid fuel combustion apparatus, in particular for solid biomass fuel
WO2010054853A2 (en) 2008-11-17 2010-05-20 Stopinc Aktiengesellschaft Method for exchangeably fastening a refractory purge plug or sleeve and a container for molten metal
WO2010054853A3 (en) * 2008-11-17 2010-07-08 Stopinc Aktiengesellschaft Method for exchangeably fastening a refractory purge plug or sleeve and a container for molten metal
AT14854U1 (en) * 2015-07-03 2016-07-15 Plansee Se Tank made of refractory metal
US10730111B2 (en) 2015-07-03 2020-08-04 Plansee Se Container of refractory metal

Also Published As

Publication number Publication date
DE4025956C2 (en) 1992-09-17
ATE138464T1 (en) 1996-06-15
US5249811A (en) 1993-10-05
DE4025956A1 (en) 1992-02-20
EP0471245B1 (en) 1996-05-22
ES2087931T3 (en) 1996-08-01
DE59107832D1 (en) 1996-06-27

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