EP0376142B1 - Gas-flushing installation - Google Patents

Gas-flushing installation Download PDF

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Publication number
EP0376142B1
EP0376142B1 EP89123547A EP89123547A EP0376142B1 EP 0376142 B1 EP0376142 B1 EP 0376142B1 EP 89123547 A EP89123547 A EP 89123547A EP 89123547 A EP89123547 A EP 89123547A EP 0376142 B1 EP0376142 B1 EP 0376142B1
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EP
European Patent Office
Prior art keywords
gas
refractory material
injection device
brick
metal
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EP89123547A
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German (de)
French (fr)
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EP0376142A1 (en
Inventor
Herbert Dr. Wagner
Dirk Stein
Erich Struzik
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Plibrico Co GmbH
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Plibrico Co GmbH
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Application filed by Plibrico Co GmbH filed Critical Plibrico Co GmbH
Priority to AT89123547T priority Critical patent/ATE97168T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
    • 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 present invention relates to a blowing device metallurgical vessel which has increased durability.
  • Blowing devices are used in various fields of industry. E.g. they are used in metallurgical vessels and metal melts to introduce gases or finely divided solids into a liquid. In many cases, these are gas flushing blocks made of refractory material, which are equipped with channels through which the gases or finely divided solids flow into the liquid. Gas purging plugs are for example from DE-OS 36 25 478, DE-OS 36 42 623, DE-OS 36 31 521, DE-U 85 22 350, 86 20 206 and 87 16 110 and EP-A-0 153 380 known.
  • Such gas purging stones are usually provided with a metal jacket and, as a rule provided with a separate sleeve, are inserted into perforated stones.
  • the top surface of the sink stones is subject to high wear and tear, so that the stones are continuously broken down from the surface.
  • the turbulence of the melt causes severe wear between the metal layer, the sleeve, the perforated brick and the adjacent vessel bottom. As a result, the durability of these systems is very limited.
  • the upper truncated cone end of the gas purging plug which is not encased by the perforated brick, projects into the interior of the metallurgical vessel beyond the bottom of the vessel and that the perforated brick and the gas purging plug sitting in it are provided with an outer covering made of cast or stamped refractory material .
  • the refractory material preferably also fills the gap between the bottom of the vessel and the perforated brick.
  • Preferred embodiments of the invention are defined in claims 2-6.
  • a method for manufacturing the blowing device is defined in claim 7.
  • the frustoconical gas purging plug preferably consists of two chambers which are separated from one another by a gas-tight layer. Metal is expediently used for this purpose. In this case, a zone is provided in the area of the outer surface of the circular truncated cone in which no gas is conducted.
  • the non-gas-carrying chamber encloses a gas-carrying chamber in which there are continuous channels which extend from the circular truncated cone base surface to the cover surface.
  • the gas permeability can also be achieved by other means, for example by non-directional porosity, directional gas permeability, the introduction of slots or channels arranged in some other way.
  • channels or elevations can be present on the lateral surface of the sink block, as are known from the so-called edge sink blocks.
  • Channels in stones made of refractory materials can be made using various methods.
  • E.g. granular refractory material can be introduced into a mold with needles or cores and compacted by pounding, shaking, vibrating or pressing.
  • Methods for producing pores or channels in refractory materials are e.g. known from DE-OS 25 11 997, EP-PS 0 083 919, AT-PS 288 860 or AT-PS 248 936.
  • the metal-coated gas purging plug is inserted into a perforated brick so that its upper end of the circular truncated cone protrudes out of the perforated brick into the interior of the vessel. It is preferably shaped in such a way that only the gas-carrying inner chamber protrudes and is not enveloped by the perforated brick.
  • the non-gas-carrying outer chamber then preferably has the same height as the perforated brick.
  • Perforated brick and exposed end of the frustoconical gas purging plug are provided according to the invention with an additional outer covering made of refractory material.
  • This covering is produced in such a way that the gap between the bottom of the vessel and the perforated brick is first poured out with refractory material and this layer is then compressed.
  • the compaction can be achieved, for example, by ramming, pouring or vibrating. Self-compacting material can also be used.
  • the end of the frustoconical gas purging plug protruding above the perforated brick is coated with the refractory material.
  • the metal layer which encompasses the free-standing end of the frustoconical gas purging plug, is preferably provided with fastening elements, so that the outer covering made of refractory material adheres particularly firmly.
  • Suitable fastening elements include slot pins, shaft anchors, V-anchors and welding beads.
  • other fastening elements are also suitable. E.g. elevations can also be provided in the metal jacket.
  • blowing surface is protected against turbulence of the melt to such an extent that the wear is considerably reduced by a blowing device constructed in this way.
  • blowing devices customary according to the prior art there is severe wear between the metal layer, sleeve, perforated stone and adjacent vessel bottom stones, which is caused by strong turbulence in the melt.
  • these disadvantages are avoided, so that the durability is at least 5 times that of the devices customary hitherto and thus lasts up to an entire vascular journey.
  • the common metal coating of both chambers of the gas purging plug also ensures reliable replacement of the gas purging plugs without damaging the perforated plug.
  • a frustoconical gas purging plug 1 is inserted into a perforated block 8.
  • the frustoconical gas purging plug 1 consists of two chambers.
  • the chamber 13 is gas-carrying, while the outer chamber 14 is non-gas-carrying.
  • the gases are passed from the base surface 5 to the top surface 15 of the truncated cone through the channels 2 in the chamber 13.
  • In its upper truncated cone end 9 comprises frustoconical gas purging plug 1 only the gas-carrying chamber 13.
  • This chamber section is surrounded by a metal jacket 6, but is no longer surrounded by the perforated brick 8 and protrudes over the bottom of the vessel into the interior of the metallurgical vessel.
  • the circular frustoconical gas purging plug 1 is provided with a metal jacket 6 on its entire lateral surface and its base surface 5.
  • the metal jacket 6, which separates the chambers 13, 14, is also arranged between the gas-conducting chamber 13 and the non-gas-conducting chamber 14, which concentrically surrounds this and forms an intermediate layer between the perforated brick 8 and the gas-conducting chamber 13.
  • the top surface 15 is not coated.
  • a gas supply pipe 7 is attached centrally to the base 5 of the gas purging plug. Gas is fed via this tube to the gas purging plug 1, through which it flows through the channels 2.
  • gas purging stone 1 and perforated stone 8 are completely coated with a covering 11 made of refractory material.
  • the refractory material has been introduced into the gap 12 between perforated stone 8 and vessel bottom inlay 10 and has been filled up to the top surface 15 of the stone.
  • the metal jacket is equipped with fastening elements 16 which serve to anchor the outer sheath 11.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Polarising Elements (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Gas Separation By Absorption (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

The present invention relates to a gas-flushing installation for introducing gases into metallurgical vessels, consisting of a) a gas-bubble brick (1), provided with gas-bearing channels (2), in the form of two superposed circular truncated cones, of which one concentrically surrounds the other, of refractory material, b) a metal layer (6) surrounding the outer and inner shell surfaces of the gas-bubble brick and its base surface (5), c) a gas feed (7) arranged centrally on the metal-coated base surface (5) of the gas-bubble brick (1) in the form of a circular truncated cone, d) two mutually separate chambers, of which the inner one bears gas and the outer one does not bear gas, and e) a perforated brick (8) surrounding the metal-coated shell surface of the gas-bubble brick (1) in the form of a circular truncated cone. <??>The invention is characterised in that the upper end (9), not surrounded by the perforated brick (8), of the truncated cone protrudes beyond the ladle bottom lining (10) into the interior of the ladle, and that the perforated brick (8) and the gas-bubble brick (1) seated therein are provided with an outer envelope (11) of cast or tamped refractory material. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein metallurgisches Gefäß mit Einblasvorrichtung, das erhöhte Haltbarkeit hat.The present invention relates to a blowing device metallurgical vessel which has increased durability.

Einblasvorrichtungen werden auf verschiedenen Gebieten der Industrie eingesetzt. Z.B. finden sie Anwendung in metallurgischen Gefäßen und Metallschmelzen, um Gase oder feinverteilte Feststoffe in eine Flüssigkeit einzuführen. Vielfach handelt es sich hierbei um Gasspülsteine aus feuerfestem Material, welche mit Kanälen ausgestattet sind, durch welche die Gase oder feinverteilten Feststoffe in die Flüssigkeit strömen. Gasspülsteine sind beispielsweise aus der DE-OS 36 25 478, der DE-OS 36 42 623, der DE-OS 36 31 521, der DE-U 85 22 350, 86 20 206 und 87 16 110 sowie der EP-A-0 153 380 bekannt.Blowing devices are used in various fields of industry. E.g. they are used in metallurgical vessels and metal melts to introduce gases or finely divided solids into a liquid. In many cases, these are gas flushing blocks made of refractory material, which are equipped with channels through which the gases or finely divided solids flow into the liquid. Gas purging plugs are for example from DE-OS 36 25 478, DE-OS 36 42 623, DE-OS 36 31 521, DE-U 85 22 350, 86 20 206 and 87 16 110 and EP-A-0 153 380 known.

Solche Gasspülsteine sind üblicherweise mit einem Metallmantel versehen und werden, in der Regel mit einer separaten Hülse versehen, in Lochsteine eingesetzt. Die Deckfläche der Spülsteine ist einem hohen Verschleiß ausgesetzt, so daß die Steine von der Oberflache her fortwahrend abgebaut werden. Darüber hinaus kommt es zwischen Metallschicht, Hülse, Lochstein und angrenzendem Gefäßboden durch die Turbulenzen der Schmelze zu einem starken Verschleiß. Die Haltbarkeit dieser Systeme ist infolgedessen sehr begrenzt.Such gas purging stones are usually provided with a metal jacket and, as a rule provided with a separate sleeve, are inserted into perforated stones. The top surface of the sink stones is subject to high wear and tear, so that the stones are continuously broken down from the surface. In addition, the turbulence of the melt causes severe wear between the metal layer, the sleeve, the perforated brick and the adjacent vessel bottom. As a result, the durability of these systems is very limited.

Der Erfindung liegt nun die Aufgabe zugrunde, eine weniger schnell verschleißende Einblasvorrichtung mit einer mindestens 5-fachen Haltbarkeit zum Einführen von Gasen in metallurgische Gefäße zur Verfügung zu stellen, bestehend aus

  • a) einem mit gasführenden Kanälen versehenen Gasspülstein in Form eines Kreiskegelstumpfes aus feuerfestem Material,
  • b) einer die äußere Mantelfläche des Gasspülsteins und seine Grundfläche umgebenden Metallschicht,
  • c) einer mittig an der metallbeschichteten Grundfläche des Gasspülsteins angeordneten Gaszuführung und
  • d) einem die metallbeschichtete Mantelfläche des Gasspülsteins umgebenden Lochstein.
The invention is based on the object of providing a less rapidly wearing blowing device with at least 5 times the durability for introducing gases into metallurgical vessels, consisting of
  • a) a gas purging plug provided with gas-carrying channels in the form of a circular truncated cone made of refractory material,
  • b) a metal layer surrounding the outer surface of the gas purging plug and its base,
  • c) a gas supply arranged centrally on the metal-coated base surface of the gas flushing block and
  • d) a perforated brick surrounding the metal-coated outer surface of the gas purging plug.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das obere vom Lochstein nicht umhüllte Kegelstumpfende des Gasspülsteins über die Gefaßbodenzustellung hinaus in das Innere des metallurgischen Gefäßes ragt und daß der Lochstein und der in ihm sitzende Gasspülstein mit einer äußeren Umhüllung aus gegossenem oder gestampften feuerfestem Material versehen sind. Vorzugsweise füllt das feuerfeste Material auch den Spalt zwischen der Gefäßbodenzustellung und dem Lochstein aus.This object is achieved in that the upper truncated cone end of the gas purging plug, which is not encased by the perforated brick, projects into the interior of the metallurgical vessel beyond the bottom of the vessel and that the perforated brick and the gas purging plug sitting in it are provided with an outer covering made of cast or stamped refractory material . The refractory material preferably also fills the gap between the bottom of the vessel and the perforated brick.

Bevorzugte Ausführungen der Erfindung sind in den Ansprüchen 2-6 definiert. Ein Verfahren zur Herstellung der Einblasvorrichtung ist im Anspruch 7 definiert.Preferred embodiments of the invention are defined in claims 2-6. A method for manufacturing the blowing device is defined in claim 7.

Die bisher nicht bekannte Maßnahme gemäß der Erfindung, den Gasspülstein über den Gefäßboden hinaus in das Innere des metallurgischen Gefäßes ragen zu lassen und diesen Teil mit einer zusätzlichen Umhüllung aus feuerfestem Material zu versehen, die vorzugsweise bis in den Spalt zwischen dem Lochstein des Gasspülsteins und der Gefäßbodenzustellung reicht und dort eine Verankerung bildet, erhöht die Haltbarkeit des Gasspülsteins deshalb beträchtlich, weil sich die beim Entleeren des metallurgischen Gefäßes zwangsläufig anfallende am Gefäßboden ansammelnden Schlackenreste nicht auf dem Gasspülstein absetzen. Bisher setzt die auf dem Gefäßboden verbleibende Restschlacke die bündig mit dem Gefäßboden angeordneten Gasspülsteine zu. Das Material erkaltet und verklebt dabei den Gasspülstein. Vor erneuter Ingebrauchnahme des Gefäßes muß deshalb die Mündung des Gasspülsteins freigebrannt werden. Das bedeutet nicht nur zusätzlichen Arbeitsaufwand, sondern führt auch zu einem unnötigen zusätzlichen Verschleiß am Gasspülstein.The previously unknown measure according to the invention, to let the gas purging plug protrude beyond the bottom of the vessel into the interior of the metallurgical vessel and to provide this part with an additional covering made of refractory material, which preferably extends into the gap between the perforated brick of the gas purging plug and the Delivery of the bottom of the vessel is sufficient and forms an anchor there, increases the durability of the gas purging plug considerably because the slag residues that accumulate on the bottom of the vessel when the metallurgical vessel is emptied do not settle on the gas purging plug. So far, the residual slag remaining on the bottom of the vessel has clogged the gas purging stones arranged flush with the bottom of the vessel. The material cools and sticks to the gas purging plug. The mouth of the gas purging plug must therefore be burned free before the vessel is used again. This not only means additional work, but also leads to unnecessary additional wear on the gas purging plug.

Der kreiskegelstumpfförmige Gasspülstein besteht vorzugsweise aus zwei Kammern, welche durch eine gasdichte Schicht voneinander getrennt sind. Zweckmäßigerweise wird hierzu Metall verwendet. Hierbei ist im Bereich der Mantelfläche des Kreiskegelstumpfs eine Zone vorgesehen, in welcher kein Gas geführt wird. Die nicht-gasführende Kammer umschließt eine gasführende Kammer, in welcher sich durchgehende Kanäle befinden, die sich von der Kreiskegelstumpfgrundflache zur Deckfläche erstrecken. Die Gasdurchlässigkeit läßt sich aber auch durch andere Mittel, z.B. durch ungerichtete Porosität, gerichtete Gasdurchlässigkeit, Einbringen von Schlitzen oder andersartig angeordnete Kanäle, erreichen. Ebenso können auf der Mantelfläche des Spülsteins Kanäle oder Erhebungen vorhanden sein, wie sie von den sogenannten Randspülsteinen her bekannt sind.The frustoconical gas purging plug preferably consists of two chambers which are separated from one another by a gas-tight layer. Metal is expediently used for this purpose. In this case, a zone is provided in the area of the outer surface of the circular truncated cone in which no gas is conducted. The non-gas-carrying chamber encloses a gas-carrying chamber in which there are continuous channels which extend from the circular truncated cone base surface to the cover surface. However, the gas permeability can also be achieved by other means, for example by non-directional porosity, directional gas permeability, the introduction of slots or channels arranged in some other way. Likewise, channels or elevations can be present on the lateral surface of the sink block, as are known from the so-called edge sink blocks.

Kanäle in Steinen aus feuerfesten Materialien können nach verschiedenen Methoden hergestellt werden. Z.B. kann man gekörntes feuerfestes Material in eine Form mit Nadeln oder Kernen einbringen und in dieser durch Stampfen, Rütteln, Vibrieren oder Pressen verdichten.Channels in stones made of refractory materials can be made using various methods. E.g. granular refractory material can be introduced into a mold with needles or cores and compacted by pounding, shaking, vibrating or pressing.

Verfahren zur Herstellung von Poren bzw. Kanälen in feuerfesten Materialien sind z.B. aus der DE-OS 25 11 997, EP-PS 0 083 919, AT-PS 288 860 oder AT-PS 248 936 bekannt.Methods for producing pores or channels in refractory materials are e.g. known from DE-OS 25 11 997, EP-PS 0 083 919, AT-PS 288 860 or AT-PS 248 936.

Der metallbeschichtete Gasspülstein wird so in einen Lochstein eingesetzt, daß sein oberes Ende des Kreiskegelstumpfes aus dem Lochstein heraus in das Gefäßinnere ragt. Vorzugsweise ist er so ausgeformt, daß nur die gasführende innere Kammer herausragt und nicht von dem Lochstein umhüllt wird. Die nicht-gasführende äußere Kammer weist dann bevorzugt dieselbe Höhe wie der Lochstein auf.The metal-coated gas purging plug is inserted into a perforated brick so that its upper end of the circular truncated cone protrudes out of the perforated brick into the interior of the vessel. It is preferably shaped in such a way that only the gas-carrying inner chamber protrudes and is not enveloped by the perforated brick. The non-gas-carrying outer chamber then preferably has the same height as the perforated brick.

Lochstein und freiliegendes Ende des kegelstumpfförmigen Gasspülsteins sind erfindungsgemäß mit einer zusätzlichen äußeren Umhüllung aus feuerfestem Material versehen. Diese Umhüllung wird in der Weise hergestellt, daß zunächst der Spalt zwischen der Gefäßbodenzustellung und dem Lochstein mit feuerfestem Material ausgegossen wird und diese Schicht sodann verdichtet wird. Das Verdichten kann beispielsweise durch Stampfen, Gießen oder Vibrieren erreicht werden. Ebenso ist auch selbstverdichtendes Material einsetzbar. Wenn der Spalt mit feuerfestem Material ausgefüllt ist, wird das über dem Lochstein vorstehende Ende des kreiskegelstumpfförmigen Gasspülsteins mit dem feuerfesten Material beschichtet.Perforated brick and exposed end of the frustoconical gas purging plug are provided according to the invention with an additional outer covering made of refractory material. This covering is produced in such a way that the gap between the bottom of the vessel and the perforated brick is first poured out with refractory material and this layer is then compressed. The compaction can be achieved, for example, by ramming, pouring or vibrating. Self-compacting material can also be used. When the gap is filled with refractory material, the end of the frustoconical gas purging plug protruding above the perforated brick is coated with the refractory material.

Die Metallschicht, die das freistehende Ende des kreiskegelstumpfförmigen Gasspülsteins umfaßt, wird vorzugsweise mit Befestigungselementen versehen, so daß die äußere Umhüllung aus feuerfestem Material besonders fest anhaftet. Als Befestigungselemente eignen sich unter anderem Schlitzstifte, Wellenanker, V-Anker und Schweißraupen. Ebenso sind aber auch andere Befestigungselemente geeignet. Z.B. können auch in dem Metallmantel Erhöhungen angebracht sein.The metal layer, which encompasses the free-standing end of the frustoconical gas purging plug, is preferably provided with fastening elements, so that the outer covering made of refractory material adheres particularly firmly. Suitable fastening elements include slot pins, shaft anchors, V-anchors and welding beads. However, other fastening elements are also suitable. E.g. elevations can also be provided in the metal jacket.

Durch eine derartig aufgebaute Einblasvorrichtung wird die Angriffsfläche gegen Turbulenzen der Schmelze soweit geschützt, daß der Verschleiß erheblich gemindert ist. Denn bei dem nach dem Stand der Technik üblichen Einblasvorrichtungen liegt zwischen Metallschicht, Hülse, Lochstein und angrenzenden Gefäßbodensteinen ein starker Verschleiß vor, welcher durch starke Turbulenzen der Schmelze verursacht wird. Bei der vorliegenden Erfindung werden diese Nachteile vermieden, so daß die Haltbarkeit mindestens das 5-fache der bisher üblichen Vorrichtungen beträgt und damit bis zu einer ganzen Gefäßreise überdauert. Durch die gemeinsame Metallumhüllung beider Kammern des Gasspülsteins wird außerdem ein betriebssicheres Auswechseln der Gasspülsteine ohne Verletzung des Lochsteins gewährleistet.The blowing surface is protected against turbulence of the melt to such an extent that the wear is considerably reduced by a blowing device constructed in this way. In the case of the blowing devices customary according to the prior art, there is severe wear between the metal layer, sleeve, perforated stone and adjacent vessel bottom stones, which is caused by strong turbulence in the melt. In the present invention, these disadvantages are avoided, so that the durability is at least 5 times that of the devices customary hitherto and thus lasts up to an entire vascular journey. The common metal coating of both chambers of the gas purging plug also ensures reliable replacement of the gas purging plugs without damaging the perforated plug.

Im folgenden wird die vorliegende Erfindung unter Bezugnahme auf die Figur näher erläutert.The present invention is explained in more detail below with reference to the figure.

Ein kreiskegelstumpfförmiger Gasspülstein 1 ist in einen Lochstein 8 eingesetzt. Der kreiskegelstumpfförmige Gasspülstein 1 besteht aus zwei Kammern. Die Kammer 13 ist gasführend, während die äußere Kammer 14 nicht-gasführend ist. Die Gase werden von der Grundfläche 5 zur Deckfläche 15 des Kegelstumpfes durch die Kanäle 2 in der Kammer 13 geleitet. In seinem oberen Kegelstumpfende 9 umfaßt der kreiskegelstumpfförmige Gasspülstein 1 nur noch die gasführende Kammer 13. Dieser Kammerabschnitt ist von einem Metallmantel 6 umhüllt, aber von dem Lochstein 8 nicht mehr umgeben und ragt über den Gefäßboden in das Innere des metallurgischen Gefäßes hinein.A frustoconical gas purging plug 1 is inserted into a perforated block 8. The frustoconical gas purging plug 1 consists of two chambers. The chamber 13 is gas-carrying, while the outer chamber 14 is non-gas-carrying. The gases are passed from the base surface 5 to the top surface 15 of the truncated cone through the channels 2 in the chamber 13. In its upper truncated cone end 9 comprises frustoconical gas purging plug 1 only the gas-carrying chamber 13. This chamber section is surrounded by a metal jacket 6, but is no longer surrounded by the perforated brick 8 and protrudes over the bottom of the vessel into the interior of the metallurgical vessel.

Der kreiskegelstumpfförmige Gasspülstein 1 ist an seiner gesamten Mantelfläche und seiner Grundfläche 5 mit einem Metallmantel 6 versehen. Zwischen der gasführenden Kammer 13 und der diese konzentrisch umgebenden, eine Zwischenschicht zwischen Lochstein 8 und gasführender Kammer 13 bildenden nicht-gasführenden Kammer 14 ist ebenfalls der Metallmantel 6, welche die Kammern 13,14 voneinander trennt, angeordnet. Nicht beschichtet ist die Deckfläche 15.The circular frustoconical gas purging plug 1 is provided with a metal jacket 6 on its entire lateral surface and its base surface 5. The metal jacket 6, which separates the chambers 13, 14, is also arranged between the gas-conducting chamber 13 and the non-gas-conducting chamber 14, which concentrically surrounds this and forms an intermediate layer between the perforated brick 8 and the gas-conducting chamber 13. The top surface 15 is not coated.

An der Grundfläche 5 des Gasspülsteins ist mittig ein Gaszuführungsrohr 7 angebracht. Über dieses Rohr wird Gas dem Gasspülstein 1 zugeleitet, den es über die Kanäle 2 durchströmt.A gas supply pipe 7 is attached centrally to the base 5 of the gas purging plug. Gas is fed via this tube to the gas purging plug 1, through which it flows through the channels 2.

Gasspülstein 1 und Lochstein 8 sind mit Ausnahme der Deckfläche 15 und der Grundfläche 5 vollständig mit einer Umhüllung 11 aus feuerfestem Material beschichtet. Das feuerfeste Material ist in den Spalt 12 zwischen Lochstein 8 und Gefäßbodenzustellung 10 eingebracht und bis zur Deckfläche 15 des Steins aufgefüllt worden. Im oberen Kegelstumpfende 9 ist der Metallmantel mit Befestigungselementen 16 ausgerüstet, welche der Verankerung der äußeren Umhüllung 11 dienen.With the exception of the top surface 15 and the base surface 5, gas purging stone 1 and perforated stone 8 are completely coated with a covering 11 made of refractory material. The refractory material has been introduced into the gap 12 between perforated stone 8 and vessel bottom inlay 10 and has been filled up to the top surface 15 of the stone. In the upper end of the truncated cone 9, the metal jacket is equipped with fastening elements 16 which serve to anchor the outer sheath 11.

Claims (7)

  1. A metallurgical vessel having a device for the injection of gases, comprising:
    a) a gas sink (1) formed with gas-carrying ducts (2) and constructed as a circular frustum of refractory material,
    b) a metal layer (6) enclosing the outer generated surface of the gas sink and its base area (5),
    c) a gas supply pipe (7) disposed at the centre of the metal-coated base area (5) of the gas sink (1),
    d) a perforate block (8) in the vessel bottom, enclosing the metal-coated generated surface of the gas sink (1),
    characterized in that
    e) the upper end (9) of the frustum of the gas sink (1) which is not enclosed by the perforate block (8) extends beyond the lining (10) of the vessel bottom into the inside of the metallurgical vessel, and
    f) the perforate block (8) and the gas sink (1) disposed therein are provided with an outer envelope (11) of cast or rammed refractory material.
  2. An injection device according to claim 1, characterized in that the gas sink (1) comprises two circular frustums which are superimposed on one another, one of them concentrically enclosing the other one, with the formation of a gas-carrying chamber (13) and a chamber (14) which does not carry gas and is disposed on the outer zone of the generated surface of the gas sink (1), continuous ducts (2) extending in the gas-carrying chamber (13) from the base area (5) to the cover area (15) of the circular frustum.
  3. An injection device according to claim 2, characterized in that the chambers (13, 14) are separated from one another by a metal layer (6).
  4. An injection device according to one of claims 1 to 3, characterized in that the refractory envelope (11) fills the gap (12) between the lining (10) of the vessel bottom and the perforate block (8).
  5. An injection device according to one of claims 1 to 4, characterized in that attaching elements (16) for the refractory outer envelope (11) are disposed on the metal layer (6) in the upper end (9) of the frustum not enveloped by the perforate block (8).
  6. An injection device according to claim 5, characterized in that the attaching elements (16) are split pins, shaft stays, V stays or weld beads.
  7. A method of manufacturing the injection device according to claims 1 to 6, characterized in that the refractory material (11) is filled in as far as the cover surface (15) of the circular frustoconical gas sink (1).
EP89123547A 1988-12-22 1989-12-20 Gas-flushing installation Revoked EP0376142B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89123547T ATE97168T1 (en) 1988-12-22 1989-12-20 BLOWING DEVICE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3843149 1988-12-22
DE3843149 1988-12-22
DE3907383A DE3907383A1 (en) 1988-12-22 1989-03-08 INLET DEVICE
DE3907383 1989-03-08

Publications (2)

Publication Number Publication Date
EP0376142A1 EP0376142A1 (en) 1990-07-04
EP0376142B1 true EP0376142B1 (en) 1993-11-10

Family

ID=25875447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123547A Revoked EP0376142B1 (en) 1988-12-22 1989-12-20 Gas-flushing installation

Country Status (11)

Country Link
US (1) US4991825A (en)
EP (1) EP0376142B1 (en)
JP (2) JPH02263565A (en)
KR (1) KR900009143A (en)
AT (1) ATE97168T1 (en)
AU (1) AU628899B2 (en)
CA (1) CA2006112A1 (en)
DE (2) DE3907383A1 (en)
ES (1) ES2048268T3 (en)
MX (1) MX172108B (en)
NZ (1) NZ231955A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024698A1 (en) * 1989-10-04 1991-04-18 Cookson Plibrico Gmbh Gas flushing brick - contained inside easily removable dome-shaped refractory block
DE4105513A1 (en) * 1991-02-22 1992-08-27 Didier Werke Ag Fire proof gas rinsing element, for metallurgical melts - comprises gas flushing stone of specified size, contg. chromium oxide, aluminium oxide, etc.
DE4126237A1 (en) * 1991-08-08 1993-03-04 Radex Heraklith PRE-PREPARED INSTALLATION ELEMENT FOR ELECTRIC ARC FURNACES AND RELATED ELECTRIC ARC FURNACES
TW206260B (en) * 1991-09-25 1993-05-21 Air Prod & Chem
US5249778A (en) * 1992-04-14 1993-10-05 Dolomitwerke Gmbh Gas stir plug device with visual wear indicator
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.
RU173109U1 (en) * 2016-08-09 2017-08-11 Закрытое акционерное общество "Ферро Балт Плюс" DEVICE FOR METAL PURGE BY GASES IN A DUCK

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL74999C (en) * 1952-01-21
US3610602A (en) * 1969-10-14 1971-10-05 United States Steel Corp Gas-permeable refractory plug and method
JPS4922484U (en) * 1972-05-31 1974-02-26
SE392479B (en) * 1974-03-20 1977-03-28 Asea Ab FORMA AT METALLURGIC CONVERTERS AND MELTING OVEN
JPS6032355B2 (en) * 1978-11-22 1985-07-27 三菱電機株式会社 Manufacturing method of semiconductor device
AU544858B2 (en) * 1981-06-03 1985-06-13 Nippon Kokan Kabushiki Kaisha Gas blowing nozzle
AU541441B2 (en) * 1981-07-15 1985-01-10 Nippon Steel Corporation Bottom blowing nozzle embedded in a refractory block
DE3247716A1 (en) * 1982-12-23 1984-07-12 Didier-Werke Ag, 6200 Wiesbaden Device for introducing gases into metallurgical vessels
GB8323252D0 (en) * 1983-08-30 1983-09-28 Steer C A Wheelbarrow
DE8522350U1 (en) * 1985-08-02 1987-02-26 Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen Gas purging plug for metallurgical vessels
DE3625478A1 (en) * 1985-08-02 1987-02-12 Burbach & Bender Ohg Gas bubble brick for metallurgical vessels
US4725047A (en) * 1985-08-26 1988-02-16 Labate M D Device for introducing gas into molten metal
DE8620206U1 (en) * 1986-07-28 1987-08-27 Burbach & Bender Ohg Esb Schweissbetrieb, 5900 Siegen Device for producing a molded block for a gas purging device
DE3631521A1 (en) * 1986-09-17 1988-04-07 Burbach & Bender Ohg Gas-bubbling device
DE8716110U1 (en) * 1986-12-05 1988-02-04 Nöh, Friedhelm, 5900 Siegen Gas purging plug
DE3642623A1 (en) * 1986-12-13 1988-06-23 Burbach & Bender Ohg GAS PURGE FOR METALLURGICAL VESSELS

Also Published As

Publication number Publication date
ES2048268T3 (en) 1994-03-16
ATE97168T1 (en) 1993-11-15
DE3907383C2 (en) 1990-12-20
KR900009143A (en) 1990-07-02
AU4695889A (en) 1990-06-28
MX172108B (en) 1993-12-03
JPH08454U (en) 1996-03-08
NZ231955A (en) 1992-07-28
DE58906171D1 (en) 1993-12-16
JPH02263565A (en) 1990-10-26
US4991825A (en) 1991-02-12
EP0376142A1 (en) 1990-07-04
JP2535879Y2 (en) 1997-05-14
CA2006112A1 (en) 1990-06-22
DE3907383A1 (en) 1990-09-20
AU628899B2 (en) 1992-09-24

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