EP0363651B1 - Gas purging brick - Google Patents

Gas purging brick Download PDF

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Publication number
EP0363651B1
EP0363651B1 EP89116620A EP89116620A EP0363651B1 EP 0363651 B1 EP0363651 B1 EP 0363651B1 EP 89116620 A EP89116620 A EP 89116620A EP 89116620 A EP89116620 A EP 89116620A EP 0363651 B1 EP0363651 B1 EP 0363651B1
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EP
European Patent Office
Prior art keywords
gas
gas purging
distribution space
installation
gas distribution
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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EP89116620A
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German (de)
French (fr)
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EP0363651A1 (en
Inventor
Hans Rothfuss
Raimund Brückner
Peter Keutgen
Josef Seeger
Manfred Winkelmann
Herbert Metzger
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Didier Werke AG
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Didier Werke AG
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
    • 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

Definitions

  • the invention relates to a gas flushing arrangement on a molten metal vessel according to the preamble of claim 1.
  • the gas purging plug is held in a holder ring by means of a screw ring.
  • a closure part which has a threaded connection, is fixed on the end face with a seal by means of a union nut on the mounting ring.
  • this has the disadvantage that to remove a worn-out gas flushing plug, you first have to unscrew the union nut for the closure part and then the screw ring. After inserting the new gas purging plug, both screw elements are again to be attached to the closure part.
  • the large number of interacting parts makes the arrangement and assembly complex and favors leaks.
  • the closure part is supported in each case by a flexible sealing element on the end face of the gas purging plug which is free of gas distribution space. Loosening of the gas purging plug during operation, which is not ruled out, can possibly lead to the escape of metal melt through joints between the gas purging plug and the vessel bottom lining. This does not meet the requirement for a firm, reliable mounting of the gas purging plug on the metal melting vessel.
  • the object of the invention is to improve a gas purging arrangement of the type mentioned with regard to assembly and functional reliability.
  • a gas purging plug 1 consists of a gas-impermeable, conical, refractory outer part 2 and a gas-permeable, refractory inner part 3.
  • the gas impermeability of the outer part 2 is achieved by means of dense, refractory material, e.g. chemically or hydraulically setting, ceramic masses with closed pores.
  • the gas permeability of the inner part 3 is achieved by known, porous building blocks, which the person skilled in the art knows, for example, under the terms permeable stones, capillary rinsers, labyrinth rinsers or window washers.
  • a gas distribution space 4 is formed in the outer part 2.
  • the gas distribution space 4 is cylindrical and concentric in the conical gas purging plug 1.
  • the gas distribution space 4 is open to the inner part 3 and has an opening 6 on the end face 5 of the outer part 2, which extends over the entire cross section of the gas distribution space 4.
  • a sealing surface 7 (see FIG. 1) is formed on the end face 5 and extends in a ring around the opening 6. At the gas purging plug 1, the gas distribution space 4 is therefore open.
  • the gas purging plug 1 has no gas connection piece.
  • the gas purging plug 1 When the gas purging plug 1 according to FIG. 2 is used, it is inserted into a perforated block 8 in a base 9 of a molten metal vessel.
  • the gas purging plug 1 is held on its periphery by a centering ring 10.
  • a closure part 11 On the front side 5 of the gas purging plug 1, a closure part 11 is placed; in such a way that it strikes the plane of the opening 6 (see FIG. 2) on the outer part 2. This is provided with a gas connection piece 12.
  • the closure part 11 engages with a protrusion 13 in the gas distribution space 4.
  • the inner wall 14 of the gas distribution space 4 forms a centering guide surface for the protrusion 13.
  • a sealing ring 15 is arranged on the closure part 11 and is seated on the sealing surface 7 of the gas purging plug 1.
  • the closure part 11 is fastened to a crossmember 16 which is attached to pins 17 arranged on the bottom 9.
  • pins 17 arranged on the bottom 9.
  • a wedge 19 is driven into a transverse slot 18 and presses the closure part 11 and thus the sealing ring 15 firmly against the sealing surface 7 via the cross member 16.
  • gas flows through the gas connecting piece 12 into the gas distribution space 4 and through the inner part 3.
  • the cross member 16 and thus the closure part 11 are lifted off the end face 5 by means of handles 20. After removing the worn gas purging plug 1, a new gas purging plug 1 can be placed on the closure part 11 and inserted into the perforated block 8.
  • the gas purging plug 1 When used in accordance with FIG. 3, the gas purging plug 1 is fastened to the closure part 11 by means of screws 21. The sealing ring 15 is thus pressed against the sealing surface 7.
  • the closure part 11 is arranged on a swivel device 22.
  • the swivel device 22 is actuated to replace the gas purging plug 1.
  • the gas purging plug 1 is pulled out of the perforated block 8. After loosening the screws 21, the gas purging plug 1 can be replaced.
  • the gas purging plug 1 described can also be fastened in the floor 9 with devices other than those described.
  • the closing part 11, which closes the gas distribution space 4 and adjoins the gas supply, is in any case easily removable from the gas purging plug 1 and, in contrast to the gas purging plug 1, can be reused.
  • the outer part could also have a sheet metal jacket.
  • the sealing surface 7 is then formed on this.
  • a sleeve 23 is inserted into the gas distribution space 4 of the gas purging plug 1.
  • This consists of a material, for example copper, which is less hard than the material of the closure part 11.
  • the sleeve 23 narrows conically to the inside of the gas distribution space 4 and forms the sealing surface 7 with its inner surface.
  • the sleeve 23 is supported with an edge 24 the end face 5. If the rinsing cone has a sheet metal jacket surrounding it, this sleeve 23 can be firmly connected to the sheet metal jacket.
  • the essentially cylindrical projection 13 of the closure part 11 has a bevel 25 on the outside.
  • the closure part 11 If the closure part 11 is pushed in the direction of arrow A perpendicular to the opening 6 with its projection 13 into the sleeve 23, then the sleeve 23 is pressed so that it lies sealingly against the inner wall 14 of the gas distribution space 4 and against the projection 13. It is favorable in comparison to the exemplary embodiment according to FIG. 4 that the pressure acting on the sealing surface 7 does not have to be applied by the force which holds the gas purging plug 1 and the closure part 11 together perpendicular to the plane of the opening 6 during operation. This improves the sealing effect without a particularly high force being required to maintain the stop of the closure part 11 on the gas purging plug 1.
  • the sleeve 23 is part of the gas purging plug 1 and is replaced with this.
  • the gas purging plug 1 need not have a sheet metal jacket. However, it can at least on its circumference, in the area where the centering ring 10 rests, with a sheet metal jacket be provided, which can extend to the top of the cone.
  • the power transmission from the centering ring 10 to the gas purging plug 1 is improved in such a way that the outer part 2 is less prone to breakage.
  • the partial sheet metal jacket can be designed so that it takes over the holding function of the centering ring 10, so that the centering ring 10 can be dispensed with as a separate component. It is also possible to connect this partial sheet metal jacket directly to the closure part 11. This can be done, for example, by a bayonet-type closure. The screws reaching into the gas purging stones 1 can then be omitted.

Abstract

A gas washing sink for use in introducing gas through a metallurgical vessel into molten metal therein includes a gas permeable refractory inner brick portion and a gas impermeable refractory outer brick portion surrounding the inner brick portion. The inner and outer brick portions define a first sink end to be exposed to the molten metal. The outer brick portion has an end face defining a second sink end to be directed away from the molten metal. A gas distribution chamber has a first end open to the inner brick portion and a second end opening onto the end face of the outer brick portion and defined thereat by an opening. A sealing surface extending concentrically of the opening has pressed thereagainst, at a pressure sufficient to achieve a seal therebetween, a closure member for closing the second end of the gas distribution chamber and having a gas inlet connection for introducing gas into the gas distribution chamber.

Description

Die Erfindung betrifft eine Gasspülanordnung an einem Metallschmelzegefäß nach dem Oberbegriff des Anspruchs 1.The invention relates to a gas flushing arrangement on a molten metal vessel according to the preamble of claim 1.

Bei der aus der DE-U-1 726 983 bekannten Gasspülanordnung wird der Gasspülstein mittels eines Schraubrings in einem Fassungsring gehalten. Ein einen Gewindeanschluß aufweisender Verschlußteil wird mittels einer Überwurfmutter auf dem Fassungsring stirnseitig unter Abdichtung festgelegt. Dies hat einerseits den Nachteil, daß man zum Entfernen eines verschlissenen Gasspülsteins zuerst die Überwurfmutter für den Verschlußteil und anschließend noch den Schraubring abschrauben muß. Nach dem Einsetzen des neuen Gasspülsteins sind wiederum beide Schraubelemente an dem Verschlußteil anzubringen. Die Vielzahl der zusammenwirkenden Teile macht die Anordnung und die Montage aufwendig und begünstigt Undichtheiten.In the gas purging arrangement known from DE-U-1 726 983, the gas purging plug is held in a holder ring by means of a screw ring. A closure part, which has a threaded connection, is fixed on the end face with a seal by means of a union nut on the mounting ring. On the one hand, this has the disadvantage that to remove a worn-out gas flushing plug, you first have to unscrew the union nut for the closure part and then the screw ring. After inserting the new gas purging plug, both screw elements are again to be attached to the closure part. The large number of interacting parts makes the arrangement and assembly complex and favors leaks.

Bei den Gasspülanordnungen nach der GB-A-1 027 567 und GB-A-1 421 793 stützt sich der Verschlußteil jeweils über ein nachgiebiges Dichtungselement auf der Stirnfläche des gasverteilungsraumfreien Gasspülsteins ab. Ein dabei nicht ausgeschlossenes lockern des Gasspülsteins im Betrieb kann gegebenenfalls zum Austreten von Metallschmelze durch Fugen zwischen dem Gasspülstein und der Gefäßbodenauskleidung führen. Die Forderung nach einer festen, betriebssicheren Halterung des Gasspülsteins an dem Metallschmelzgefäß ist dadurch nicht erfüllt.In the gas purging arrangements according to GB-A-1 027 567 and GB-A-1 421 793, the closure part is supported in each case by a flexible sealing element on the end face of the gas purging plug which is free of gas distribution space. Loosening of the gas purging plug during operation, which is not ruled out, can possibly lead to the escape of metal melt through joints between the gas purging plug and the vessel bottom lining. This does not meet the requirement for a firm, reliable mounting of the gas purging plug on the metal melting vessel.

Aufgabe der Erfindung ist es, eine Gasspülanordnung der eingangs genannten Art hinsichtlich Montage und Funktionssicherheit zu verbessern.The object of the invention is to improve a gas purging arrangement of the type mentioned with regard to assembly and functional reliability.

Diese Aufgabe wird bei einer Gasspülanordnung der eingangs genannten Art mit den Mitteln des kennzeichnenden Teils des Anspruchs 1 gelöst.This object is achieved in a gas purging arrangement of the type mentioned at the outset with the means of the characterizing part of claim 1.

Auf diese Weise wird einfach ein Zentrieren der Gasspülanordnung bzw. deren Verschlußteils am Gasspülstein sowie bei einfacher Montage eine gute Abdichtung erreicht so daß das Gas ausschließlich durch den gasdurchlässigen Innenteil des Gasspülsteins in die Metallschmelze gelangt. Gegenüber z. B. aus der DE 36 23 609 bekannten Gasspülsteinen, bei welchen eine Bodenplatte mit Gasanschlußstutzen angeschweißt ist, sind die Transport- und Lagermöglichkeiten des erfindungsgemäßen Gasspülsteins vereinfacht, da an ihm kein Gasanschlußstutzen vorsteht. Es ist auch eine Gewichtsreduzierung des Gasspülsteins erreicht, da er weniger metallische Teile als beim Stand der Technik aufweist.In this way, a centering of the gas purging arrangement or its closure part on the gas purging plug and, with simple assembly, a good seal is achieved so that the gas only reaches the metal melt through the gas-permeable inner part of the gas purging plug. Opposite z. B. from DE 36 23 609 known gas purging stones, in which a base plate is welded to the gas connecting piece, the transport and storage options of the gas purging plug according to the invention are simplified, since no gas connecting piece protrudes from it. The gas purging plug is also reduced in weight since it has fewer metallic parts than in the prior art.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteranspüchen und der folgenden Beschreibung. In der Zeichnung zeigen:

Figur 1
einen Gasspülstein,
Figur 2
den Gasspülstein im Einsatz,
Figur 3
ein weiteres Einsatzbeispiel des Gasspülsteins, und
Figur 4
ein weiteres Ausführungsbeispiel des Gasspülsteines.
Advantageous embodiments of the invention result from the subclaims and the following description. The drawing shows:
Figure 1
a gas purging plug,
Figure 2
the gas purging plug in use,
Figure 3
another example of use of the gas purging plug, and
Figure 4
another embodiment of the gas purging plug.

Ein Gasspülstein 1 besteht aus einem gasundurchlässigen, kegelförmigen, feuerfesten Außenteil 2 und einem gasdurchlässigen, feuerfesten Innenteil 3. Die Gasundurchlässigkeit des Außenteils 2 wird durch dichtes, feuerfestes Material erreicht, wie z.B. chemisch oder hydraulisch abbindende, keramische Massen mit geschlossenen Poren. Die Gasdurchlässigkeit des Innenteils 3 wird durch an sich bekannte, poröse Bausteine erreicht, die der Fachmann beispielsweise unter den Begriffen permeable Steine, Kapillarspüler, Labyrinthspüler oder Scheibenspüler kennt.A gas purging plug 1 consists of a gas-impermeable, conical, refractory outer part 2 and a gas-permeable, refractory inner part 3. The gas impermeability of the outer part 2 is achieved by means of dense, refractory material, e.g. chemically or hydraulically setting, ceramic masses with closed pores. The gas permeability of the inner part 3 is achieved by known, porous building blocks, which the person skilled in the art knows, for example, under the terms permeable stones, capillary rinsers, labyrinth rinsers or window washers.

Ein Gasverteilungsraum 4 ist im Außenteil 2 ausgebildet. Der Gasverteilungsraum 4 ist zylindrisch und konzentrisch im kegelförmigen Gasspülstein 1.A gas distribution space 4 is formed in the outer part 2. The gas distribution space 4 is cylindrical and concentric in the conical gas purging plug 1.

Der Gasverteilungsraum 4 ist zum Innenteil 3 hin offen und weist an der Stirnseite 5 des Außenteils 2 eine Öffnung 6 auf, die sich über den gesamten Querschnitt des Gasverteilraumes 4 erstreckt. An der Stirnseite 5 ist eine Dichtfläche 7 (vgl. Figur 1) ausgebildet, die sich ringförmig um die Öffnung 6 erstreckt. Am Gasspülstein 1 ist der Gasverteilungsraum 4 also offen. Der Gasspülstein 1 weist keinen Gasanschlußstutzen auf.The gas distribution space 4 is open to the inner part 3 and has an opening 6 on the end face 5 of the outer part 2, which extends over the entire cross section of the gas distribution space 4. A sealing surface 7 (see FIG. 1) is formed on the end face 5 and extends in a ring around the opening 6. At the gas purging plug 1, the gas distribution space 4 is therefore open. The gas purging plug 1 has no gas connection piece.

Bei der Verwendung des Gasspülsteins 1 nach Figur 2 ist dieser in einen Lochstein 8 eines Bodens 9 eines Metallschmelzengefäßes eingesetzt. Der Gasspülstein 1 ist an seinem Umfang von einem Zentrierring 10 gehalten. Auf die Stirnseite 5 des Gasspülsteines 1 ist ein Verschlußteil 11 aufgesetzt; und zwar so, daß es zur Ebene der Öffnung 6 (siehe Figur 2) am Außenteil 2 anschlägt. Dieses ist mit einem Gasanschlußstutzen 12 versehen. Das Verschlußteil 11 greift mit einem Vorsprung 13 in den Gasverteilungsraum 4. Die Innenwand 14 des Gasverteilungsraumes 4 bildet dabei eine zentrierende Führungsfläche für den Vorsprung 13.When the gas purging plug 1 according to FIG. 2 is used, it is inserted into a perforated block 8 in a base 9 of a molten metal vessel. The gas purging plug 1 is held on its periphery by a centering ring 10. On the front side 5 of the gas purging plug 1, a closure part 11 is placed; in such a way that it strikes the plane of the opening 6 (see FIG. 2) on the outer part 2. This is provided with a gas connection piece 12. The closure part 11 engages with a protrusion 13 in the gas distribution space 4. The inner wall 14 of the gas distribution space 4 forms a centering guide surface for the protrusion 13.

An dem Verschlußteil 11 ist ein Dichtring 15 angeordnet, der auf der Dichtfläche 7 des Gasspülsteins 1 aufsitzt.A sealing ring 15 is arranged on the closure part 11 and is seated on the sealing surface 7 of the gas purging plug 1.

Das Verschlußteil 11 ist an einer Traverse 16 befestigt, die auf am Boden 9 angeordnete Zapfen 17 aufgesteckt ist. In Figur 2 ist nur einer der Zapfen 17 gezeigt. In einen Querschlitz 18 ist ein Keil 19 eingetrieben, der über die Traverse 16 das Verschlußteil 11 und damit den Dichtring 15 fest gegen die Dichtfläche 7 preßt.The closure part 11 is fastened to a crossmember 16 which is attached to pins 17 arranged on the bottom 9. In Figure 2, only one of the pins 17 is shown. A wedge 19 is driven into a transverse slot 18 and presses the closure part 11 and thus the sealing ring 15 firmly against the sealing surface 7 via the cross member 16.

Im Betrieb strömt durch den Gasanschlußstutzen 12 Gas in den Gasverteilungsraum 4 und durch das Innenteil 3.In operation, gas flows through the gas connecting piece 12 into the gas distribution space 4 and through the inner part 3.

Ist der Gasspülstein 1 verschlissen, dann wird mittels Handgriffen 20 die Traverse 16 und damit das Verschlußteil 11 von der Stirnseite 5 abgehoben. Nach Entfernen des verschlissenen Gasspülsteines 1 läßt sich auf das Verschlußteil 11 ein neuer Gasspülstein 1 aufsetzen und in den Lochstein 8 einführen.If the gas purging plug 1 is worn out, the cross member 16 and thus the closure part 11 are lifted off the end face 5 by means of handles 20. After removing the worn gas purging plug 1, a new gas purging plug 1 can be placed on the closure part 11 and inserted into the perforated block 8.

Beim Einsatz entsprechend Figur 3 ist der Gasspülstein 1 mittels Schrauben 21 an dem Verschlußteil 11 befestigt. Der Dichtring 15 ist damit gegen die Dichtfläche 7 gepreßt.When used in accordance with FIG. 3, the gas purging plug 1 is fastened to the closure part 11 by means of screws 21. The sealing ring 15 is thus pressed against the sealing surface 7.

Das Verschlußteil 11 ist an einer Schwenkvorrichtung 22 angeordnet. Zum Auswechseln des Gasspülsteins 1 wird die Schwenkvorrichtung 22 betätigt. Dadurch wird der Gasspülstein 1 aus dem Lochstein 8 herausgezogen. Nach dem Lösen der Schrauben 21 läßt sich der Gasspülstein 1 austauschen.The closure part 11 is arranged on a swivel device 22. The swivel device 22 is actuated to replace the gas purging plug 1. As a result, the gas purging plug 1 is pulled out of the perforated block 8. After loosening the screws 21, the gas purging plug 1 can be replaced.

Der beschriebene Gasspülstein 1 kann auch mit anderen als den beschriebenen Einrichtungen im Boden 9 befestigt werden. Das den Gasverteilungsraum 4 abschließende und an die Gaszufuhr anschließende Verschlußteil 11 ist in jedem Fall leicht vom Gasspülstein 1 abzunehmen und im Gegensatz zum Gasspülstein 1 wiederverwendbar.The gas purging plug 1 described can also be fastened in the floor 9 with devices other than those described. The closing part 11, which closes the gas distribution space 4 and adjoins the gas supply, is in any case easily removable from the gas purging plug 1 and, in contrast to the gas purging plug 1, can be reused.

Das Außenteil könnte auch einen Blechmantel aufweisen. Die Dichtfläche 7 ist dann an diesem ausgebildet.The outer part could also have a sheet metal jacket. The sealing surface 7 is then formed on this.

Beim Ausführungsbeispiel nach Figur 4 ist in den Gasverteilungsraum 4 des Gasspülsteins 1 eine Hülse 23 eingesetzt. Diese besteht aus einem Material, beispielsweise Kupfer, das weniger hart ist als das Material des Verschlußteils 11. Die Hülse 23 verengt sich konisch zum Innern des Gasverteilungsraumes 4 und bildet mit ihrer Innenfläche die Dichtfläche 7. Die Hülse 23 stützt sich mit einem Rand 24 an der Stirnseite 5 ab. Diese Hülse 23 kann, falls der Spülkegel einen ihn umschließenden Blechmantel aufweist, mit dem Blechmantel fest verbunden sein.In the exemplary embodiment according to FIG. 4, a sleeve 23 is inserted into the gas distribution space 4 of the gas purging plug 1. This consists of a material, for example copper, which is less hard than the material of the closure part 11. The sleeve 23 narrows conically to the inside of the gas distribution space 4 and forms the sealing surface 7 with its inner surface. The sleeve 23 is supported with an edge 24 the end face 5. If the rinsing cone has a sheet metal jacket surrounding it, this sleeve 23 can be firmly connected to the sheet metal jacket.

Der im wesentlichen zylindrische Vorsprung 13 des Verschlußteils 11 weist außen eine Abschrägung 25 auf.The essentially cylindrical projection 13 of the closure part 11 has a bevel 25 on the outside.

Wird das Verschlußteil 11 in Richtung des Pfeiles A senkrecht zur Öffnung 6 mit seinem Vorsprung 13 in die Hülse 23 eingeschoben, dann wird die Hülse 23 verpreßt, so daß sie dichtend an der Innenwand 14 des Gasverteilungsraumes 4 und an dem Vorsprung 13 anliegt. Günstig dabei ist im Vergleich zum Ausführungsbeispiel nach Figur 4, daß der auf die Dichtfläche 7 wirkende Druck nicht durch die Kraft aufgebracht werden muß, der im Betrieb den Gasspülstein 1 und das Verschlußteil 11 senkrecht zur Ebene der Öffnung 6 zusammenhält. Dies verbessert die Dichtwirkung, ohne daß eine besonders hohe Kraft zum Aufrechterhalten des Anschlags des Verschlußteils 11 am Gasspülstein 1 nötig ist.If the closure part 11 is pushed in the direction of arrow A perpendicular to the opening 6 with its projection 13 into the sleeve 23, then the sleeve 23 is pressed so that it lies sealingly against the inner wall 14 of the gas distribution space 4 and against the projection 13. It is favorable in comparison to the exemplary embodiment according to FIG. 4 that the pressure acting on the sealing surface 7 does not have to be applied by the force which holds the gas purging plug 1 and the closure part 11 together perpendicular to the plane of the opening 6 during operation. This improves the sealing effect without a particularly high force being required to maintain the stop of the closure part 11 on the gas purging plug 1.

Die Hülse 23 ist Bestandteil des Gasspülsteins 1 und wird mit diesem ausgewechselt.The sleeve 23 is part of the gas purging plug 1 and is replaced with this.

Der Gasspülstein 1 braucht keinen Blechmantel aufzuweisen. Er kann jedoch wenigstens an seinem Umfang, an dem Bereich, an dem der Zentrierring 10 anliegt, mit einem Blechmantel versehen sein, der sich bis zur Kegelspitze erstrecken kann. Die Kraftübertragung vom Zentrierring 10 auf den Gasspülstein 1 ist dadurch in der Weise verbessert, daß das Außenteil 2 weniger bruchgefährdet ist. Der Teil-Blechmantel kann dabei so gestaltet sein, daß er die Haltefunktion des Zentrierrings 10 übernimmt, so daß der Zentrierring 10 als separates Bauteil entfallen kann. Es ist auch möglich, diesen Teil-Blechmantel direkt mit dem Verschlußteil 11 zu verbinden. Dies kann beispielsweise durch einen bajonettartigen Verschluß erfolgen. Die in den Gasspülsteinen 1 greifenden Schrauben können dann entfallen.The gas purging plug 1 need not have a sheet metal jacket. However, it can at least on its circumference, in the area where the centering ring 10 rests, with a sheet metal jacket be provided, which can extend to the top of the cone. The power transmission from the centering ring 10 to the gas purging plug 1 is improved in such a way that the outer part 2 is less prone to breakage. The partial sheet metal jacket can be designed so that it takes over the holding function of the centering ring 10, so that the centering ring 10 can be dispensed with as a separate component. It is also possible to connect this partial sheet metal jacket directly to the closure part 11. This can be done, for example, by a bayonet-type closure. The screws reaching into the gas purging stones 1 can then be omitted.

Claims (10)

  1. Gas flushing installation on a molten metal vessel with a gas purging brick (1), which has a gas impermeable, refractory outer portion (2), a gas permeable, refractory inner portion (3) disposed therein and a gas distribution space (4), which has a free opening (6) at an end surface (5) of the outer portion (2), and with a closure member (11) having a gas connection (12), characterised in that the closure member (11) is in direct sealing engagement with a sealing surface (7) on the outer portion (2) extending around the opening (6), whereby the inner wall (14) of the gas distribution space (4) constitutes a centering guide surface for a projection (13) on the closure member (11), which is positioned on the end surface (5) of the outer portion (2).
  2. Gas purging installation as claimed in claim 1, characterised in that the opening (6) extends over the entire cross-section of the gas distribution space (4).
  3. Gas purging installation as claimed in claim 1 or 2, characterised in that the gas distribution space (4) is cylindrically and concentrically constructed.
  4. Gas purging installation as claimed in one of the preceding claims, characterised in that the sealing surface (7) is constructed on the end surface (5) of the outer portion (2).
  5. Gas purging installation as claimed in one of the preceding claims, characterised in that the sealing surface (7) is constructed on the inner wall (14) of the gas distribution space (4).
  6. Gas purging installation as claimed in claim 5, characterised in that the gas purging brick (1) has a metallic sleeve (23) inserted in the gas distribution space (4) in order to form the sealing surface (7).
  7. Gas purging installation as claimed in claim 6, characterised in that the sleeve (23) comprises copper.
  8. Gas purging installation as claimed in one of the preceding claims, characterised in that the inner wall (14) of the gas distribution space (4) constitutes a centering guide surface for a projection (13) on the closure member (11), which is positioned on the end surface (5) of the outer portion (2).
  9. Gas purging installation as claimed in one of the preceding claims, characterised in that the sealing surface (7) sealingly engages a sealing ring (15) on the closure member (11).
  10. Gas purging installation as claimed in one of the preceding claims, characterised in that the closure member (11) engages the end surface (5) of the outer portion (2) perpendicular to the opening (6).
EP89116620A 1988-10-01 1989-09-08 Gas purging brick Expired - Lifetime EP0363651B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833502 1988-10-01
DE3833502A DE3833502A1 (en) 1988-10-01 1988-10-01 GASSPUELSTEIN

Publications (2)

Publication Number Publication Date
EP0363651A1 EP0363651A1 (en) 1990-04-18
EP0363651B1 true EP0363651B1 (en) 1996-11-20

Family

ID=6364231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116620A Expired - Lifetime EP0363651B1 (en) 1988-10-01 1989-09-08 Gas purging brick

Country Status (10)

Country Link
US (1) US4978108A (en)
EP (1) EP0363651B1 (en)
JP (1) JPH02118012A (en)
KR (1) KR0138105B1 (en)
CN (1) CN1019026B (en)
AT (1) ATE145433T1 (en)
CA (1) CA1337499C (en)
DE (2) DE3833502A1 (en)
ES (1) ES2095834T3 (en)
ZA (1) ZA896796B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2893992A1 (en) 2014-01-09 2015-07-15 Refractory Intellectual Property GmbH & Co. KG Gas flushing element and associated gas connection element

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DE4012952C2 (en) * 1990-04-24 1995-03-23 Didier Werke Ag Gas purging device on a metallurgical vessel
DE4022949C1 (en) * 1990-07-19 1991-07-11 Radex-Heraklith Industriebeteiligungs Ag, Wien, At
DE4025956A1 (en) * 1990-08-16 1992-02-20 Didier Werke Ag FIREPROOF FILLING OF A RING GAP IN A METALLURGICAL TANK
EP0502256A3 (en) * 1991-03-06 1992-12-09 Beck U. Kaltheuner, Feuerfeste Erzeugnissegmbh & Co. Kg Gas bubbling device for the treatment of steel in a ladle
DE4121329C2 (en) * 1991-06-28 1995-09-07 Veitsch Radex Ag Gas purging stone
DE4136552A1 (en) * 1991-11-06 1993-05-13 Kortec Ag NOZZLE DEVICE FOR INITIATING MEDIA INTO A MELT AND METHOD FOR OPERATING THIS NOZZLE DEVICE
DE9301563U1 (en) * 1993-02-04 1993-03-25 Beck U. Kaltheuner Feuerfeste Erzeugnisse Gmbh & Co Kg, 5970 Plettenberg, De
CN1059324C (en) * 1994-06-03 2000-12-13 赵学瑞 Bones and tendon recovery cream
DE19941639C2 (en) * 1999-08-27 2001-09-13 Mannesmann Ag Gas purging device for a metallurgical vessel
DE19954918C2 (en) * 1999-11-16 2001-09-20 Veitsch Radex Gmbh Wien Refractory ceramic gas purging plug
EP1243361A1 (en) * 2001-03-19 2002-09-25 Vesuvius Crucible Company Apparatus for injecting gas into molten metal
DE10259434B3 (en) * 2002-12-19 2004-08-26 Refractory Intellectual Property Gmbh & Co.Kg Gas purging device for metallurgical melting vessels
DE10360827B3 (en) * 2003-12-23 2005-06-09 Refractory Intellectual Property Gmbh & Co. Kg Holding device for a rinsing element for a metallurgical vessel useful in secondary metallurgical treatment of metal melts has curved metal pieces
JP2011194457A (en) * 2010-03-23 2011-10-06 Kurosaki Harima Corp Installation structure of plug for gas blowing
EP2703761B1 (en) * 2012-08-27 2016-08-17 Refractory Intellectual Property GmbH & Co. KG Gas purging element with its corresponding gas supply line
EP2711107B1 (en) * 2012-09-20 2014-10-08 Refractory Intellectual Property GmbH & Co. KG Refractory ceramic gas purging plug and a process for manufacturing said gas purging plug

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GB1027537A (en) * 1964-03-14 1966-04-27 British Cast Iron Res Ass Improvements in ladles for treatment of molten metals
US3541604A (en) * 1967-02-01 1970-11-17 Nippon Steel Corp Gas insufflating means for a molten metal refining container
SE328967B (en) * 1969-02-20 1970-09-28 Asea Ab
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EP2893992A1 (en) 2014-01-09 2015-07-15 Refractory Intellectual Property GmbH & Co. KG Gas flushing element and associated gas connection element

Also Published As

Publication number Publication date
KR0138105B1 (en) 1998-07-15
CN1019026B (en) 1992-11-11
US4978108A (en) 1990-12-18
DE3833502A1 (en) 1990-04-05
DE58909750D1 (en) 1997-01-02
CN1041616A (en) 1990-04-25
JPH02118012A (en) 1990-05-02
ZA896796B (en) 1990-06-27
KR900006535A (en) 1990-05-08
EP0363651A1 (en) 1990-04-18
ES2095834T3 (en) 1997-03-01
ATE145433T1 (en) 1996-12-15
CA1337499C (en) 1995-11-07
DE3833502C2 (en) 1990-10-04

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