EP0423449B1 - Shut-off and/or control element for a metallurgical container - Google Patents

Shut-off and/or control element for a metallurgical container Download PDF

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Publication number
EP0423449B1
EP0423449B1 EP90115261A EP90115261A EP0423449B1 EP 0423449 B1 EP0423449 B1 EP 0423449B1 EP 90115261 A EP90115261 A EP 90115261A EP 90115261 A EP90115261 A EP 90115261A EP 0423449 B1 EP0423449 B1 EP 0423449B1
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EP
European Patent Office
Prior art keywords
gas
openings
closure
pipe
outer tube
Prior art date
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Expired - Lifetime
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EP90115261A
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German (de)
French (fr)
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EP0423449A2 (en
EP0423449A3 (en
Inventor
Ullrich Hintzen
Ernst Lührsen
Andreas Schuler
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Didier Werke AG
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Didier Werke AG
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Publication of EP0423449A3 publication Critical patent/EP0423449A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt

Definitions

  • the invention relates to a closing and / or regulating element for tapping liquid molten metal from a metallurgical vessel with an inner tube which has lateral openings, and with an outer tube which also has lateral openings and with a cylindrical sealing surface on its inner circumference on a cylindrical sealing surface of the outer circumference of the inner tube, one tube being stationary and the other tube movable relative to it, and a gas distribution chamber for inert gas introduced through the outer tube being formed between the two tubes, which gas chamber passes through the gas distribution chamber between the sealing surfaces and through the openings in the tubes can.
  • the outer tube serving as a stator is provided outside the metallurgical vessel with a gas supply line through which the inert gas radially acts there as a gas distribution chamber between the annular gap Outer tube and the inner tube serving as a rotor is supplied.
  • the gas distribution chamber is largely in the cold area of the closing and / or regulating element, so that the inert gas flowing out of the gas distribution chamber contributes to the fact that molten metal in the annular gap, which is also partly in the cold area, between the sealing surfaces of the both pipes slightly frozen.
  • the locking and / or regulating member thus becomes inoperable because the inner tube then does not face the outer tube is more rotatable. The same applies to the penetration of molten metal into the annular gap area, which acts as a gas distribution chamber.
  • the gas distribution in the gas distribution space is uneven. It is also necessary to seal the gas distribution chamber from the outside with suitable sealing elements.
  • the known gas supply arrangement is only suitable for closing and / or regulating elements, the outer tube of which is fixed and the inner tube of which is movable.
  • the object of the invention is to propose a closing and / or regulating element of the type mentioned in the introduction, in which the sealing surfaces and the openings can always be flushed uniformly with inert gas during operation, without impairing the operational safety of the organ.
  • the above object is achieved in a locking and / or regulating member of the type mentioned in the introduction in that the inner tube is provided with a closure above its openings in the outer tube, the space between the closure and the outer tube forming the gas distribution chamber into which a gas supply duct running in the outer tube opens.
  • the inert gas flows through the openings into the melt. This reduces wear on the edges of the openings. In addition, the inert gas avoids caking on the openings.
  • the inert gas entering the melt supports the separation of impurities from the melt and the homogenization of the melt. It is favorable that the gas flows in countercurrent to the melt entering the openings.
  • the closure is gas-permeable. A portion of the inert gas then flows through the closure into the inner tube. The rest of the inert gas enters between the sealing surfaces. As a result of the gas-permeable closure, inert gas flows through both the openings in the inner tube and in the outer tube.
  • gas channels run in the wall of the outer tube, which open into its openings. This means that the openings are not only flushed by the gas flow that has passed between the sealing surfaces, but also by an additional gas flow. Gas channels can run in the wall of the inner tube, which open into its openings. The gas flow through the openings can thereby be increased.
  • An inner tube 2 made of refractory, ceramic material is attached to the bottom 1 of a metallurgical vessel.
  • the inner tube 2 is closed at its upper end by a closure 3.
  • the closure 3 is formed by a gas-permeable insert.
  • the closure 3 can also be formed in one piece with the inner tube 2 and be impermeable to gas.
  • Below the closure 3 2 openings 4 are provided in the wall of the inner tube.
  • An outer tube 5 made of refractory, ceramic material is pushed axially onto the inner tube 2.
  • the outer tube 5 and the inner tube 2 adjoin each other on cylindrical sealing surfaces 6, 7.
  • the outer tube 5 has openings 8. It is axially displaceable relative to the inner tube 2 and / or rotatable about the common longitudinal axis, as a result of which the openings 4, 8 can be adjusted relative to one another to control the melt passage.
  • inert gas such as argon
  • inert gas such as argon
  • melt 11 passes through the openings 8, 4 into the inner tube 2 and flows out of it downwards. In the openings 4, 8, the emerging melt 11 has the gas flowing through it in countercurrent.
  • gas channels 12, 13, 14 can be provided in the wall of the inner tube 2 and / or the wall of the outer tube 5. These are shown in dashed lines in the figure.
  • the gas channels 12 run in the wall of the outer tube 5 from the gas distribution chamber 9 to the openings 8.
  • the gas channels 13 run in the wall of the inner tube 2 from the gas distribution chamber 9 to the openings 4.
  • the gas channels 14 run in the wall of the inner tube 2 from below of the bottom 1 to the openings 4.
  • the outer tube 5 is arranged on the bottom 1 of the metallurgical vessel.
  • the inner tube 2 is inserted into the outer tube 5 from below. It is axially displaceable relative to the outer tube 5 and / or rotatable about the common longitudinal axis.
  • the sealing surfaces 6, 7 and the openings 4, 8 are flushed with inert gas, as is described in the exemplary embodiment according to FIG. 1 above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Closures For Containers (AREA)

Abstract

A closing and/or regulating apparatus for tapping molten metal from the interior of the metallurgical vessel includes an inner refractory pipe having extending through a wall thereof at least one opening and an outer refractory pipe fitted over the inner pipe and having extending through a wall thereof at least one opening. Outer and inner surfaces of the inner and outer pipes, respectively, define mating sealing surfaces. One of the pipes is fixedly mounted to a metallurgical vessel, and the other pipe is movable axially and/or rotatably relative to the one pipe to thereby selectively bring the openings to the two pipes relatively into and out of alignment. The inner pipe has adjacent an inner end thereof at a position inwardly of the opening therein a closure closing the interior of the inner pipe. The outer pipe defines therein a space forming a gas distribution chamber at a location confronting the closure. A gas, for example an inert gas, is introduced into the gas distribution chamber such that the gas passes therefrom between the sealing surfaces and into the openings.

Description

Die Erfindung betrifft ein Schließ- und/oder Regelorgan für den Abstich flüssiger Metallschmelze aus einem metallurgischen Gefäß mit einem Innenrohr, das seitliche Durchbrechungen ausfweist, und mit einem Außenrohr, das ebenfalls seitliche Durchbrechungen aufweist und mit einer zylindrischen Dichtfläche an seinem Innenumfang auf einer zylindrischen Dichtfläche des Außenumfangs des Innenrohres sitzt, wobei das eine Rohr ortsfest und das andere Rohr relativ zu ihm beweglich ist, und zwischen beiden Rohren eine Gasverteilkammer für durch das Außenrohr eingeleitetes Inertgas gebildet ist, das aus der Gasverteilkammer zwischen den Dichtflächen und durch die Durchbrechungen der Rohre hindurchtreten kann.The invention relates to a closing and / or regulating element for tapping liquid molten metal from a metallurgical vessel with an inner tube which has lateral openings, and with an outer tube which also has lateral openings and with a cylindrical sealing surface on its inner circumference on a cylindrical sealing surface of the outer circumference of the inner tube, one tube being stationary and the other tube movable relative to it, and a gas distribution chamber for inert gas introduced through the outer tube being formed between the two tubes, which gas chamber passes through the gas distribution chamber between the sealing surfaces and through the openings in the tubes can.

Aus der US-A-36 51 998 ist ein Schließ- und/oder Regelorgan der eingangs genannten Art bekannt, dessen als Stator dienendes Außenrohr außerhalb des metallurgischen Gefäßes mit einer Gaszuführungsleitung versehen ist, durch welche Inertgas radial dem dort als Gasverteilkammer wirkenden Ringspalt zwischen dem Außenrohr und dem als Rotor dienenden Innenrohr zugeführt wird.From US-A-36 51 998 a closing and / or regulating member of the type mentioned is known, the outer tube serving as a stator is provided outside the metallurgical vessel with a gas supply line through which the inert gas radially acts there as a gas distribution chamber between the annular gap Outer tube and the inner tube serving as a rotor is supplied.

Da die Gaszuführungsleitung außerhalb des metallurgischen Gefäßes liegt, befindet sich die Gasverteilkammer weitgehend im kalten Bereich des Schließ- und/oder Regelorgans, so daß das aus der Gasverteilkammer ausströmende Inertgas dazu beiträgt, daß Metallschmelze im ebenfalls teilweise im kalten Bereich liegenden Ringspalt zwischen den Dichtflächen der beiden Rohre leicht einfriert. Damit wird das Schließ- und/oder Regelorgan betriebsunfähig, weil das Innenrohr dann gegenüber dem Außenrohr nicht mehr drehbar ist. Entsprechendes gilt auch bei Eindringen von Metallschmelze in den Ringspaltbereich, der als Gasverteilkammer wirksam ist.Since the gas supply line is outside the metallurgical vessel, the gas distribution chamber is largely in the cold area of the closing and / or regulating element, so that the inert gas flowing out of the gas distribution chamber contributes to the fact that molten metal in the annular gap, which is also partly in the cold area, between the sealing surfaces of the both pipes slightly frozen. The locking and / or regulating member thus becomes inoperable because the inner tube then does not face the outer tube is more rotatable. The same applies to the penetration of molten metal into the annular gap area, which acts as a gas distribution chamber.

Aufgrund der einseitigen radialen Gaszuführung ist die Gasverteilung im Gasverteilraum ungleichmäßig. Es ist außerdem erforderlich, die Gasverteilkammer nach außen hin mit geeigneten Dichtungselementen abzudichten. Darüberhinaus eignet sich die bekannte Gaszuführungsanordnung nur für Schließ- und/oder Regelorgane, deren Außenrohr fest und deren Innenrohr beweglich ist.Due to the one-sided radial gas supply, the gas distribution in the gas distribution space is uneven. It is also necessary to seal the gas distribution chamber from the outside with suitable sealing elements. In addition, the known gas supply arrangement is only suitable for closing and / or regulating elements, the outer tube of which is fixed and the inner tube of which is movable.

Aufgabe der Erfindung ist es, ein Schließ- und/oder Regelorgan der eingangs genannten Art vorzuschlagen, bei dem im Betrieb die Dichtflächen und die Durchbrechungen stets mit Inertgas gleichmäßig bespülbar sind, ohne die Betriebssicherheit des Organs zu beeinträchtigen.The object of the invention is to propose a closing and / or regulating element of the type mentioned in the introduction, in which the sealing surfaces and the openings can always be flushed uniformly with inert gas during operation, without impairing the operational safety of the organ.

Erfindungsgemäß ist obige Aufgabe bei einem Schließ- und/oder Regelorgan der eingangs genannten Art dadurch gelöst, daß das Innenrohr oberhalb seiner Durchbrechungen innerhalb des Außenrohres mit einem Abschluß versehen ist, wobei der Raum zwischen dem Abschluß und dem Außenrohr die Gasverteilkammer bildet, in die ein im Außenrohr verlaufender Gaszuführungskanal mündet.According to the invention, the above object is achieved in a locking and / or regulating member of the type mentioned in the introduction in that the inner tube is provided with a closure above its openings in the outer tube, the space between the closure and the outer tube forming the gas distribution chamber into which a gas supply duct running in the outer tube opens.

Dadurch, daß Inertgas zwischen den Dichtflächen hindurchgeleitet ist, ist dort ein Gaspolster erreicht, das dem Verschleiß der Dichtflächen entgegenwirkt. Durch die Ausbildung der Gasverteilkammer ist gewährleistet, daß das Gas am gesamten Umfang des Innenrohres gleichmäßig zwischen die Dichtflächen eintritt.Characterized in that inert gas is passed between the sealing surfaces, a gas cushion is achieved there, which counteracts the wear of the sealing surfaces. The design of the gas distribution chamber ensures that the gas enters evenly between the sealing surfaces over the entire circumference of the inner tube.

Das Inertgas strömt durch die Durchbrechungen in die Schmelze ab. Es verringert dadurch den Verschleiß der Ränder der Durchbrechungen. Außerdem vermeidet das Inertgas Anbackungen an den Durchbrechungen.The inert gas flows through the openings into the melt. This reduces wear on the edges of the openings. In addition, the inert gas avoids caking on the openings.

Weiterhin unterstützt das in die Schmelze eintretende Inertgas das Abscheiden von Verunreinigungen aus der Schmelze und die Homogenisierung der Schmelze. Günstig dabei ist, daß das Gas im Gegenstrom zu der in die Durchbrechungen eintretenden Schmelze strömt.Furthermore, the inert gas entering the melt supports the separation of impurities from the melt and the homogenization of the melt. It is favorable that the gas flows in countercurrent to the melt entering the openings.

In einer Ausgestaltung der Erfindung ist der Abschluß gasdurchlässig. Es strömt dann ein Teil des Inertgases durch den Abschluß in das Innenrohr. Der restliche Teil des Inertgases tritt zwischen die Dichtflächen ein. Durch den gasdurchlässigen Abschluß ist erreicht, daß sowohl die Durchbrechungen des Innenrohrs als auch die des Außenrohrs von Inertgas durchströmt sind.In one embodiment of the invention, the closure is gas-permeable. A portion of the inert gas then flows through the closure into the inner tube. The rest of the inert gas enters between the sealing surfaces. As a result of the gas-permeable closure, inert gas flows through both the openings in the inner tube and in the outer tube.

In einer Weiterbildung verlaufen in der Wandung des Außenrohrs Gaskanäle, die in dessen Durchbrechungen münden. Damit werden die Durchbrechungen nicht nur von dem zwischen den Dichtf lächen hindurchgetretenen Gasstrom, sondern von einem zusätzlichen Gasstrom durchspült. Es können in der Wandung des Innenrohrs Gaskanäle verlaufen, die in dessen Durchbrechungen münden. Dadurch läßt sich die Gasdurchströmung der Durchbrechungen erhöhen.In a further development, gas channels run in the wall of the outer tube, which open into its openings. This means that the openings are not only flushed by the gas flow that has passed between the sealing surfaces, but also by an additional gas flow. Gas channels can run in the wall of the inner tube, which open into its openings. The gas flow through the openings can thereby be increased.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispiels. In der Zeichnung zeigen:

Figur 1
ein Schließ- und/oder Regelorgan eines metallurgischen Gefäßes schematisch im Schnitt mit ortsfestem Innenrohr und beweglichem Außenrohr, und
Figur 2
eine Ausführung mit ortsfestem Außenrohr und beweglichem Innenrohr.
Further advantageous refinements of the invention result from the following description of an exemplary embodiment. The drawing shows:
Figure 1
a closing and / or regulating member of a metallurgical vessel schematically in section with a stationary inner tube and a movable outer tube, and
Figure 2
a version with a fixed outer tube and a movable inner tube.

Am Boden 1 eines metallurgischen Gefäßes ist ein Innenrohr 2 aus feuerfestem, keramischem Material befestigt. Das Innenrohr 2 ist an seinem oberen Ende durch einen Abschluß 3 verschlossen. Im Ausführungsbeispiel ist der Abschluß 3 von einem gasdurchlässigen Einsatz gebildet. Der Abschluß 3 kann auch einstückig mit dem Innenrohr 2 ausgebildet und gasundurchlässig sein. Unterhalb des Abschlusses 3 sind in der Wandung des Innenrohrs 2 Durchbrechungen 4 vorgesehen.An inner tube 2 made of refractory, ceramic material is attached to the bottom 1 of a metallurgical vessel. The inner tube 2 is closed at its upper end by a closure 3. In the exemplary embodiment, the closure 3 is formed by a gas-permeable insert. The closure 3 can also be formed in one piece with the inner tube 2 and be impermeable to gas. Below the closure 3 2 openings 4 are provided in the wall of the inner tube.

Auf das Innenrohr 2 ist ein Außenrohr 5 aus feuerfestem, keramischem Material axial aufgeschoben. Das Außenrohr 5 und das Innenrohr 2 grenzen an zylindrischen Dichtflächen 6, 7 aneinander an. Das Außenrohr 5 weist Durchbrechungen 8 auf. Es ist gegenüber dem Innenrohr 2 axial verschieblich und/oder um die gemeinsame Längsachse drehbar, wodurch die Durchbrechungen 4, 8 zur Steuerung des Schmelzendurchtritts gegeneinander verstellbar sind.An outer tube 5 made of refractory, ceramic material is pushed axially onto the inner tube 2. The outer tube 5 and the inner tube 2 adjoin each other on cylindrical sealing surfaces 6, 7. The outer tube 5 has openings 8. It is axially displaceable relative to the inner tube 2 and / or rotatable about the common longitudinal axis, as a result of which the openings 4, 8 can be adjusted relative to one another to control the melt passage.

Zwischen dem Außenrohr 5 und dem Abschluß 3 besteht eine Gasverteilkammer 9. In diese mündet ein im Außenrohr 5 verlaufender Gaskanal 10.There is a gas distribution chamber 9 between the outer tube 5 and the closure 3. A gas channel 10 running in the outer tube 5 opens into this.

Wird in die Gasverteilkammer 9 Inertgas, wie beispielsweise Argon, eingeleitet, dann strömt dieses in Richtung der Pfeile a zwischen die Dichtflächen 6, 7. Teilweise tritt das Gas in Richtung der Pfeile b durch die Durchbrechungen 8 in die Schmelze 11; teilweise tritt das Gas in Richtung der Pfeile c unten am Außenrohr 5 in die Schmelze 11.If inert gas, such as argon, is introduced into the gas distribution chamber 9, then this flows in the direction of the arrows a between the sealing surfaces 6, 7. Partially the gas passes through the openings 8 into the melt 11 in the direction of the arrows b; the gas partially enters the melt 11 in the direction of the arrows c at the bottom of the outer tube 5.

Ein weiterer Teil des Gases tritt aus der Gasverteilkammer 9 durch den Abschluß 3 hindurch in das Innenrohr 2 ein und strömt in Richtung der Pfeile d durch die Durchbrechungen 4, 8 in die Schmelze 11. Bei der in der Figur dargestellten Offenstellung des Schließ- und/oder Regelorgans tritt Schmelze 11 durch die Durchbrechungen 8, 4 in das Innenrohr 2 und fließt aus diesem nach unten aus. In den Durchbrechungen 4, 8 ist die austretende Schmelze 11 im Gegenstrom von dem Gas durchströmt.Another part of the gas enters from the gas distribution chamber 9 through the closure 3 into the inner tube 2 and flows in the direction of the arrows d through the openings 4, 8 into the melt 11. In the open position of the closing and / or control element, melt 11 passes through the openings 8, 4 into the inner tube 2 and flows out of it downwards. In the openings 4, 8, the emerging melt 11 has the gas flowing through it in countercurrent.

Durch die beschriebenen Gasströmungen ist der Verschleiß der Dichtflächen 6, 7 und der Durchbrechungen 4, 8 vermindert. Außerdem ist Anbackungen der Schmelze 11 in den Durchbrechungen 4, 8 entgegengewirkt.The wear of the sealing surfaces 6, 7 and the openings 4, 8 is reduced by the gas flows described. In addition, caking of the melt 11 in the openings 4, 8 is counteracted.

Um eine gezielte Gasdurchströmung der Durchbrechungen 4, 8 zu verbessern, können in der Wandung des Innenrohrs 2 und/oder der Wandung des Außenrohrs 5 weitere Gaskanäle 12, 13, 14 vorgesehen sein. Diese sind in der Figur strichliert dargestellt. Die Gaskanäle 12 verlaufen in der Wandung des Außenrohrs 5 von der Gasverteilkammer 9 zu den Durchbrechungen 8. Die Gaskanäle 13 verlaufen in der Wandung des Innenrohrs 2 von der Gasverteilkammer 9 zu den Durchbrechungen 4. Die Gaskanäle 14 verlaufen in der Wandung des Innenrohrs 2 von unterhalb des Bodens 1 zu den Durchbrechungen 4.In order to improve a targeted gas flow through the openings 4, 8, further gas channels 12, 13, 14 can be provided in the wall of the inner tube 2 and / or the wall of the outer tube 5. These are shown in dashed lines in the figure. The gas channels 12 run in the wall of the outer tube 5 from the gas distribution chamber 9 to the openings 8. The gas channels 13 run in the wall of the inner tube 2 from the gas distribution chamber 9 to the openings 4. The gas channels 14 run in the wall of the inner tube 2 from below of the bottom 1 to the openings 4.

Beim Ausführungsbeispiel nach Figur 2 ist das Außenrohr 5 am Boden 1 des metallurgischen Gefäßes angeordnet. Das Innenrohr 2 ist in das Außenrohr 5 von unten eingeschoben. Es ist gegenüber dem Außenrohr 5 axial verschieblich und/oder um die gemeinsame Längsachse drehbar.In the exemplary embodiment according to FIG. 2, the outer tube 5 is arranged on the bottom 1 of the metallurgical vessel. The inner tube 2 is inserted into the outer tube 5 from below. It is axially displaceable relative to the outer tube 5 and / or rotatable about the common longitudinal axis.

Innerhalb des Außenrohrs 5 besteht oberhalb des Abschlusses 3 des Innenrohrs 2 die Gasverteilkammer 9.Within the outer tube 5 there is the gas distribution chamber 9 above the end 3 of the inner tube 2.

Die Bespülung der Dichtflächen 6, 7 und der Durchbrechungen 4, 8 mit Inertgas erfolgt ebenso, wie dies beim Ausführungsbeispiel nach Figur 1 oben beschrieben ist.The sealing surfaces 6, 7 and the openings 4, 8 are flushed with inert gas, as is described in the exemplary embodiment according to FIG. 1 above.

Claims (5)

  1. Closure and/or control element for tapping liquid metal melt from a metallurgical vessel with an inner tube (2), which has lateral openings (4), and with an outer tube (5), which also has lateral openings (8) and engages a cylindrical sealing surface (6) on the outer periphery of the inner tube with a cylindrical sealing surface (7) on its inner periphery, whereby the one tube is fixed and the other tube is movable relative to it and defined between the two tubes there is a gas distribution chamber for inert gas introduced through the outer tube, which gas can flow out of the gas distribution chamber between the sealing surfaces and through the openings in the tubes, characterised in that the inner tube (2) is provided above its openings (4) within the outer tube (5) with a closure (3), whereby the space between the closure (3) and the outer tube (5) constitutes the gas distribution chamber (9), into which a gas supply passage (10) extending within the outer tube (5) discharges.
  2. Closure and/or control element as claimed in claim 1, characterised in that the closure (3) is gas-permeable.
  3. Closure and/or control element as claimed in claim 1 or 2, characterised in that extending within the wall of the outer tube (5) there are gas passages (12) which discharge into its openings (8).
  4. Closure and/or control element as claimed in one of the preceding claims, characterised in that extending within the wall of the inner tube (2) there are gas passages (13,14) which discharge into its openings (4).
  5. Closure and/or control element as claimed in claim 4, characterised in that the gas passages (13) extend from the gas distribution chamber (9) to the openings (4).
EP90115261A 1989-10-17 1990-08-09 Shut-off and/or control element for a metallurgical container Expired - Lifetime EP0423449B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934601 1989-10-17
DE3934601A DE3934601C1 (en) 1989-10-17 1989-10-17

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EP0423449A2 EP0423449A2 (en) 1991-04-24
EP0423449A3 EP0423449A3 (en) 1991-12-04
EP0423449B1 true EP0423449B1 (en) 1995-12-27

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US (2) US5058784A (en)
EP (1) EP0423449B1 (en)
JP (1) JPH03133562A (en)
KR (1) KR910007606A (en)
CN (1) CN1051001A (en)
AT (1) ATE132064T1 (en)
BR (1) BR9005151A (en)
CA (1) CA2027767A1 (en)
DE (2) DE3934601C1 (en)
RU (1) RU1831410C (en)
ZA (1) ZA906478B (en)

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DE4442336A1 (en) * 1994-11-29 1996-05-30 Didier Werke Ag Closing and / or regulating element for a metallurgical vessel
KR100388080B1 (en) * 2000-06-02 2003-06-18 남종현 A natural tea for controling hyperlipemia and hepatopathy and a method for manufacturing the same
KR100457710B1 (en) * 2001-08-27 2004-11-18 주식회사 자생당 liquor wine brewage method by means of acanthopanax
KR20020057856A (en) * 2002-04-17 2002-07-12 김대도 Recove drink

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DE3540202C1 (en) * 1985-11-13 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Inflow regulating element for mould level control in a continuous casting plant
WO1988004209A1 (en) * 1986-12-01 1988-06-16 Arva Ag Discharge and flow regulator for metallurgical vessels and casting process
DE3731600A1 (en) * 1987-09-19 1989-04-06 Didier Werke Ag TURNTABLE CLOSURE FOR A METALURIGAN TUBE AND ROTOR AND / OR STATOR FOR SUCH A TURNOVER
GB8723059D0 (en) * 1987-10-01 1987-11-04 Foseco Int Rotary pouring nozzle
FR2627715B1 (en) * 1988-02-26 1991-10-11 Vesuvius Sa CASTING NOZZLE FOR ASSISTED OPENING, DEVICE INCORPORATING THE SAME, AND IMPLEMENTATION METHOD
DE3826245A1 (en) * 1988-08-02 1990-02-08 Didier Werke Ag CLOSING AND / OR REGULATOR FOR THE LAYER OF LIQUID METAL MELTING FROM A METALLURGICAL DANGER
CH676811A5 (en) * 1988-09-29 1991-03-15 Stopinc Ag
DE3926678C2 (en) * 1989-08-12 1994-09-01 Didier Werke Ag Closing and regulating device for a metallurgical vessel

Also Published As

Publication number Publication date
US5058784A (en) 1991-10-22
DE3934601C1 (en) 1990-10-04
EP0423449A2 (en) 1991-04-24
CA2027767A1 (en) 1991-04-18
BR9005151A (en) 1991-09-17
US5106060A (en) 1992-04-21
CN1051001A (en) 1991-05-01
KR910007606A (en) 1991-05-30
EP0423449A3 (en) 1991-12-04
ZA906478B (en) 1991-06-26
JPH03133562A (en) 1991-06-06
RU1831410C (en) 1993-07-30
DE59010007D1 (en) 1996-02-08
ATE132064T1 (en) 1996-01-15

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