EP0471245B1 - Annular gap refractory filling in a metallurgical vessel - Google Patents
Annular gap refractory filling in a metallurgical vessel Download PDFInfo
- Publication number
- EP0471245B1 EP0471245B1 EP91112934A EP91112934A EP0471245B1 EP 0471245 B1 EP0471245 B1 EP 0471245B1 EP 91112934 A EP91112934 A EP 91112934A EP 91112934 A EP91112934 A EP 91112934A EP 0471245 B1 EP0471245 B1 EP 0471245B1
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- EP
- European Patent Office
- Prior art keywords
- annular gap
- layer
- filling
- opening
- refractory
- 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.)
- Expired - Lifetime
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Classifications
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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
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- 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
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- 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
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- 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 in a refractory lining of a metallurgical vessel, and the lining.
- Such a refractory filling is known from GB-A-2 115 539.
- 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-C-31 05 531 describes a process for the production of refractory fiber masses and their use as expansion joint filling material, in particular between the stones of a rotary kiln.
- it is proposed to pack the mass between plastic foils and to insert it as a plastic layer with the foils enveloping it as an intermediate layer when lining the furnace.
- This can be an endless role of the plastic wrapped between plastic films Act layer of mass, but it can also act prefabricated and dimensionally defined individual packs of the plastic mass packed in between the plastic films or possibly welded therein in layer form.
- the desired lengths can be cut from the roll. All of these exemplary embodiments can only be a flat, that is to say non-annular, filling, the dimensions of which may be fixed but not adapted to the shape and volume of the expansion joint to be filled from the outset.
- the deformation of the built-in layer in the shape of the annular gap also ensures that the filling can be easily manufactured or installed by being fixed in the opening or on the molded part either before the molded part is inserted. As a result, the filling automatically comes 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 gas purging plug is a gas purging cone and accordingly the annular gap has a conical shape, then the built-in layer is preformed in accordance with the conical ring shape of the annular gap.
- the built-in 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 must not shrink again when exposed to temperature.
- 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 which can be inserted prefabricated into the opening of the vessel lining. The assembly 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, combustible wrapper, comprising the built-in layer and the gas purging plug.
- the opening (4) is provided for the use of a frustoconical gas purge cone (6). This is 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.
- the mass (9) of the built-in layer (8) is enclosed in a casing (10).
- 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 installation is done as follows:
- the installation layer (8) is placed on the gas purging cone (6). This can take place after the gas purge cone (6) has been produced before it is brought to the vessel (1).
- the gas purge cone (6) and the installation layer (8) form a structural unit. This can be enclosed by an envelope, not shown, made of paper or plastic or metal foil.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
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 in a refractory lining of a metallurgical vessel, and the lining.
Eine solche feuerfeste Füllung ist aus der GB-A-2 115 539 bekannt. Dort 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.Such a refractory filling is known from GB-A-2 115 539. There, 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-C-31 05 531 ist ein Verfahren zur Herstellung von feuerfesten Fasermassen und ihre Verwendung als Dehnfugenfüllmaterial, insbesondere zwischen den Steinen eines Drehrohrofens beschrieben. Bei einer solchen Anwendung wird vorgeschlagen, die Masse zwischen Kunststoffolien einzupacken und als plastische Schicht mit den sie umhüllenden Folien beim Ausmauern des Ofens als Zwischenlage einzulegen. Hierbei kann es sich um eine endlose Rolle der zwischen Kunststoffolien eingepackten plastischen Schicht der Masse handeln, es können aber auch vorgefertigte und in ihren Abmessungen festgelegte Einzelpackungen der zwischen den Kunststoffolien eingepackten oder eventuell hierin eingeschweißten plastischen Masse in Schichtform handeln. Von der Rolle können die gewünschten Längen angeschnitten werden. Bei allen diesen Ausführungebeispielen kann es sich nur um eine flache, d.h. nicht ringförmige Füllung handeln, deren Abmessungen gegebenenfalls zwar festgelegt, nicht aber von vornherein der Form und dem Volumen der zu füllenden Dehnfuge angepaßt sind.DE-C-31 05 531 describes a process for the production of refractory fiber masses and their use as expansion joint filling material, in particular between the stones of a rotary kiln. In such an application, it is proposed to pack the mass between plastic foils and to insert it as a plastic layer with the foils enveloping it as an intermediate layer when lining the furnace. This can be an endless role of the plastic wrapped between plastic films Act layer of mass, but it can also act prefabricated and dimensionally defined individual packs of the plastic mass packed in between the plastic films or possibly welded therein in layer form. The desired lengths can be cut from the roll. All of these exemplary embodiments can only be a flat, that is to say non-annular, filling, the dimensions of which may be fixed but not adapted to the shape and volume of the expansion joint to be filled from the outset.
In der DE-A-2 102 059 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 vorgeformten konischen Hülse aus feuerfesten, keramischen Fasern überzogen. Eine Hülle, in welcher die Hülse aus Fasermaterial verpackt wäre, ist nicht geoffenbart.DE-A-2 102 059 describes a slide closure for a metallurgical vessel. A fireproof sleeve is mortared into a base stone of the vessel. A gas purging plug of the vessel is not shown. In the slide closure, a component is covered with a pre-shaped conical sleeve made of refractory, ceramic fibers. An envelope in which the sleeve made of fiber material would be packaged is not disclosed.
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, on the one hand, can be easily assembled, on the other hand, in such a way that the necessary seal is produced.
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 und dem Volumen des Ringspaltes angepaßt ist und vor dem Einbau des Formteils an diesem oder in der Öffnung festlegbar ist, wobei die Einbauschicht aus einer sich bei Betriebstemperatur blähenden Masse besteht, die in einer der Form und dem Volumen des Ringspaltes angepaßten Hülle verpackt ist, wobei das Volumen der Einbauschicht kleiner als das des Ringspaltes ist.According to the invention, the above object is achieved with a filling of the type mentioned in that the filling is a prefabricated, deformable installation layer which is adapted to the shape and volume of the annular gap and can be fixed on the latter or in the opening before the molded part is installed , wherein the built-in layer consists of a bulging material at operating temperature, which is in one of the shape and volume of the annular gap adapted sleeve is packaged, the volume of the built-in layer is smaller than that of the annular gap.
Dadurch erübrigen sich Mörtelarbeiten beim Einsetzen des Formteils, insbesondere Gasspülsteins, in die feuerfeste Auskleidung des metallurgischen Gefäßes. Die in der Form und 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.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 in the shape and volume of the intended annular gap ensures that the annular gap is evenly filled with the built-in layer in the installed state of the molded part. Their deformability, which remains when or after the molded part is inserted 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 bei 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 installed by being fixed in the opening or on the molded part either before the molded part is inserted. As a result, the filling automatically comes 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 die Einbauschicht entsprechend der konischen Ringform des Ringspaltes vorgeformt.If the gas purging plug is a gas purging cone and accordingly the annular gap has a conical shape, then the built-in layer is preformed in accordance with the conical ring shape of the annular gap.
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 darf jedenfalls bei Temperaturbeaufschlagung nicht wieder schwinden.When the metallurgical vessel, in the opening of which the molded part is inserted, is heated, the built-in 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 must not shrink again when exposed to temperature.
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 auch beim Einbau der Einbausicht an mindestens einer Sollbruchstelle 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 at least one predetermined breaking point when installing the installation view.
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 Fall die Einbauschicht nach dem 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 vorgefertigte Baueinheit bilden, die vorgefertigt in die Öffnung der Gefäßauskleidung einsetzbar ist. Die Baueinheit 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, verbrennbaren Umhüllung verpacken.It can also be provided that the built-in layer and the gas purging plug form a prefabricated structural unit which can be inserted prefabricated into the opening of the vessel lining. The assembly 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, combustible wrapper, comprising the built-in layer and the gas purging plug.
Ein Ausführungsbeispiel der Erfindung ergibt sich aus der folgenden Zeichnungsbeschreibung.An embodiment of the invention results from the following description of the drawings.
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 III-III.
- Figure 1
- a section of a metallurgical vessel in the area of an opening of a refractory lining,
- Figure 2
- a prefabricated, deformable installation layer in a section corresponding to FIG. 1,
- Figure 3
- a view of the built-in layer of Figure 2 along the line III-III.
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 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 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 ein 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 Ringspakts (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). The built-in layer (8) does not exactly have the shape of the ring stack (7) in its prefabricated state, but is designed in such a way that when the gas purge cone (6) is installed in the opening (4) the shape of the then resulting ring 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 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). 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:The installation is done as follows:
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 layer (8) is placed on the gas purging cone (6). This can take place after the gas purge cone (6) has been produced before it is brought to the vessel (1). The gas purge cone (6) and the installation layer (8) form a structural unit. This can be enclosed by an envelope, not shown, made of paper or plastic or metal foil.
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 built-in layer (8) fills the annular gap (7) that then arises.
Bei einer anderen Montageweise kann auch vorgesehen sein, daß die Einbauschicht (8) zunächst in die Öffnung (4) eingesetzt und in dieser festegelegt wird und danach erst der Gaspsülkegel (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 this, and only then is the gas flushing cone (6) inserted.
Die Masse (9) der Einbauschicht (8) besteht aus einer Masse, die sich nach dem Einsetzen des Gaspülkegels (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) consists of a mass which, after the gas flushing cone (6) has been inserted into the opening (4), inflates when the lining (2) is heated up, so that it inflates the annular gap (7 ) completely filled out.
Claims (5)
- Refractory filling of an annular gap, which is provided between a shaped member, particularly a gas flushing brick, installed in an opening in a refractory lining of a metallurgical vessel, and the lining, characterised in that the filling is a prefabricated, deformable insertion layer (8), which is matched to the shape and the volume of the annular gap (7) and, before the installation of the shaped member (6), is securable to it or in the opening (4), whereby the insertion layer (8) comprises a composition which expands at the operational temperature and which is packed into a sheath matched to the shape and the volume of the annular gap (7), whereby the volume of the insertion layer (8) is smaller than that of the annular gap (7).
- Refractory filling as claimed in Claim 1, characterised in that the sheath (10) tears at at least one predetermined breaking point on installation of the insertion layer (8).
- Refractory filling as claimed in one of Claims 1 or 2, characterised in that the sheath (10) comprises organic material, such as paper or plastic, or a metallic film.
- Refractory filling as claimed in one of the preceding claims, characterised in that the insertion layer (8) and the gas flushing brick (6) constitute a prefabricated unit which is insertable prefabricated into the opening (4) in the lining (2).
- Refractory filling as claimed in Claim 4, characterised in that the unit is packed in a common, combustible covering.
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 EP0471245A1 (en) | 1992-02-19 |
| EP0471245B1 true 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) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4213007C1 (en) * | 1992-04-21 | 1993-12-16 | Tech Resources Pty Ltd | Method and device for sealing nozzles in the surrounding refractory lining |
| US20030062718A1 (en) * | 2001-09-28 | 2003-04-03 | Central Sprinkler Corporation | Ferrous pipe couplings and prelubricated coupling gaskets |
| DE10331707B4 (en) * | 2003-07-11 | 2007-04-05 | Hdg Bavaria Gmbh Heizkessel & Anlagenbau | Combustion chamber of a solid fuel combustion device, in particular for burning solid biomass |
| CH699948A2 (en) | 2008-11-17 | 2010-05-31 | Stopinc Ag | Container for molten metal, and a method for an interchangeable connection of a refractory porous plug or a refractory sleeve. |
| 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 |
| AT14854U1 (en) | 2015-07-03 | 2016-07-15 | Plansee Se | Tank made of refractory metal |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3105531C2 (en) * | 1981-02-16 | 1984-10-04 | Didier-Werke Ag, 6200 Wiesbaden | Process for the production of fire-resistant or refractory masses, masses produced by the process and their use |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US3007600A (en) * | 1958-01-27 | 1961-11-07 | Thompson Ramo Wooldridge Inc | Seal |
| FR2044723A1 (en) * | 1969-04-14 | 1971-02-26 | Oglebay Norton Co | Ingot mould hot top lining |
| DE2102059A1 (en) * | 1971-01-16 | 1972-08-03 | Didier-Werke Ag, 6200 Wiesbaden | Slide closure for containers containing liquid melt, in particular pouring ladles |
| US3869132A (en) * | 1973-07-18 | 1975-03-04 | Pressure Science Inc | Fire resistant sealing ring combination |
| US4172598A (en) * | 1975-07-01 | 1979-10-30 | Goricon Metallurgical Services Limited | Sealing methods |
| US4194036A (en) * | 1975-07-29 | 1980-03-18 | Zirconal Processes Limited | Module for furnace walls totally wrapped with thermally combustible material |
| US4077389A (en) * | 1976-04-19 | 1978-03-07 | Jamak Incorporated | Pneumatic oven door gasket |
| US4407969A (en) * | 1981-07-16 | 1983-10-04 | The Babcock & Wilcox Company | Flexible refractory composition |
| US4392636A (en) * | 1981-07-22 | 1983-07-12 | Swiss Aluminium Ltd. | Apparatus for degassing molten metal |
| DE3201531A1 (en) * | 1982-01-20 | 1983-07-28 | Didier-Werke Ag, 6200 Wiesbaden | Burnt magnesia brick and magnesia-chrome brick with joint layer and a process for the manufacture thereof |
| US4462576A (en) * | 1982-02-24 | 1984-07-31 | Didier-Werke Ag | Apparatus for supplying gas through the wall of a metallurgical container |
| JPS5919053A (en) * | 1982-07-23 | 1984-01-31 | Daido Steel Co Ltd | Connection mechanism of gas supply pipe for gas bubbling in refining vessel such as ladle |
| US4494735A (en) * | 1983-11-16 | 1985-01-22 | Swiss Aluminium Ltd. | Apparatus for degassing molten metal |
| US4471950A (en) * | 1982-10-22 | 1984-09-18 | Labate M D | Expandable, consumable stopper plug for steel making and handling vessels |
| DE3311617C1 (en) * | 1983-03-30 | 1984-10-25 | Messer Griesheim Gmbh, 6000 Frankfurt | Method and device for rinsing a molten metal, in particular steel, in a ladle |
| CH660701A5 (en) * | 1983-08-18 | 1987-06-15 | Metacon Ag | DEVICE FOR DETECTING THE PRESENCE OF METALLIC MELT IN A FLOW CHANNEL OF A METALLURGICAL OVEN OR A SPRAYER. |
| GB8329038D0 (en) * | 1983-10-31 | 1983-11-30 | Morgan Refractories Ltd | Porous plug assemblies |
| US4538795A (en) * | 1984-10-19 | 1985-09-03 | Bate Michael D | Device for introducing gas into molten metal in controlled streams |
| DE3527793A1 (en) * | 1985-08-02 | 1987-02-12 | Esb Schweissbetrieb Burbach & | METHOD FOR ASSEMBLING A GAS PURELINE PROVIDED FOR METALLURGICAL VESSELS |
| IN168759B (en) * | 1987-04-10 | 1991-06-01 | Injectall Ltd | |
| DE3833502A1 (en) * | 1988-10-01 | 1990-04-05 | Didier Werke Ag | GASSPUELSTEIN |
| US5014917A (en) * | 1989-11-27 | 1991-05-14 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | High-temperature, flexible, thermal barrier seal |
-
1990
- 1990-08-16 DE DE4025956A patent/DE4025956A1/en active Granted
-
1991
- 1991-08-01 ES ES91112934T patent/ES2087931T3/en not_active Expired - Lifetime
- 1991-08-01 DE DE59107832T patent/DE59107832D1/en not_active Expired - Fee Related
- 1991-08-01 EP EP91112934A patent/EP0471245B1/en not_active Expired - Lifetime
- 1991-08-01 AT AT91112934T patent/ATE138464T1/en not_active IP Right Cessation
- 1991-08-13 US US07/744,378 patent/US5249811A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3105531C2 (en) * | 1981-02-16 | 1984-10-04 | Didier-Werke Ag, 6200 Wiesbaden | Process for the production of fire-resistant or refractory masses, masses produced by the process and their use |
Also Published As
| Publication number | Publication date |
|---|---|
| US5249811A (en) | 1993-10-05 |
| DE59107832D1 (en) | 1996-06-27 |
| EP0471245A1 (en) | 1992-02-19 |
| ATE138464T1 (en) | 1996-06-15 |
| DE4025956A1 (en) | 1992-02-20 |
| ES2087931T3 (en) | 1996-08-01 |
| DE4025956C2 (en) | 1992-09-17 |
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