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WO1992000392A1 - Withdrawal device for ladle bricks - Google Patents

Withdrawal device for ladle bricks Download PDF

Info

Publication number
WO1992000392A1
WO1992000392A1 PCT/AT1991/000079 AT9100079W WO9200392A1 WO 1992000392 A1 WO1992000392 A1 WO 1992000392A1 AT 9100079 W AT9100079 W AT 9100079W WO 9200392 A1 WO9200392 A1 WO 9200392A1
Authority
WO
WIPO (PCT)
Prior art keywords
sink
pull
forces
pulling
out device
Prior art date
Application number
PCT/AT1991/000079
Other languages
German (de)
French (fr)
Inventor
Manfred Slamenik
Original Assignee
Veitscher Magnesitwerke-Actien-Gesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Veitscher Magnesitwerke-Actien-Gesellschaft filed Critical Veitscher Magnesitwerke-Actien-Gesellschaft
Publication of WO1992000392A1 publication Critical patent/WO1992000392A1/en

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Classifications

    • 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
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1694—Breaking away the lining or removing parts thereof

Definitions

  • the invention relates to a pull-out device for pan sinks with a pulling device which can be connected to the sink via a pull rod.
  • a pull-out device for a gas purging plug is known from DE-A1- 33 30 105, which consists of a frame on which a threaded spindle is provided, which can exert tensile forces on the pull rod connected to the purging plug to be pulled out.
  • Pulling out a sink is a delicate and difficult task, since on the one hand relatively large forces have to be exerted on this sink in order to detach it from the perforated block, but on the other hand damage to the brickwork is to be prevented.
  • the pull-out device described in this prior publication a metered application of force is now possible, but the forces that can be exerted by such a device are not always sufficient to detach a sink from its seat.
  • DE-Al-38 33 504 pull-out devices which exert corresponding tensile forces on the sink by driving in a driving wedge.
  • a driving wedge In order to be able to ensure correspondingly large forces, such a driving wedge must have a relatively small pitch angle. It is therefore necessary to make an exact adjustment of the pull-out device before driving in the driving wedge, since otherwise the driving wedge can either not be used or an insufficient amount of the wedge is available for driving out. It is an object of the present invention to avoid these disadvantages and to provide a pull-out device for pan sinks, which can exert large forces on the sink, is simple and easy to use, and avoids damage to the sink or perforated stone through the application of force .
  • a device which, in addition to the forces which can be transmitted from the pulling device to the sink, can exert impulsive forces on the sink.
  • the pulling device can be dimensioned relatively weak in the present invention, since it only has to exert part of the force required to expel the sink. Only very loose sink stones can be pulled out by the pulling device alone. For tightly fitting sink stones, an impact force can also be applied. Surprisingly, it has been found that the superimposition of a lower, continuously acting force with a force acting in a jerk manner results in a substantial improvement when pulling out sink blocks.
  • the device for exerting additional forces is designed as an opening in the pull rod, which is provided for receiving a driving wedge.
  • the driving wedge makes it possible to apply very large forces in abrupt fashion, although it is also possible for the average fitter to dose these forces to some extent.
  • the pull-out device according to the invention can be handled particularly simply and safely if the pulling device is designed as a hydraulic cylinder.
  • FIG. 1 shows a pull-out device according to the invention in a partial section in the longitudinal direction
  • FIG. 2 shows a top view of the pull-out device from FIG. 1
  • FIG. 3 shows an end view of the pull-out device from FIG. 1.
  • the sink 1 seated in a perforated brick 12 can be screwed via its gas connection tube 2 to a pull rod 3 of the pull-out device.
  • This tie rod 3 is coupled to a hydraulic cylinder 6 by means of a coupling bolt 4 via a yoke 5.
  • the hydraulic cylinder 6 is supported on the pan base 8 via a frame 7.
  • An opening for receiving a driving wedge 9 is provided in the pull rod 3.
  • An interchangeable spacer 11 can be inserted between this driving wedge 9 and a plate 10 connected to the frame 7.
  • the pan is usually brought into a lying position, the pan base 8 being in a vertical position.
  • the pull rod 3 is screwed onto the gas connection tube 2.
  • the pull-out device is then suspended in an angle iron 13 welded to the pan base 8 as a holder, so that the frame 7 is supported on the pan base 8.
  • a plug connection between the yoke 5 and the pull rod 3 is made by means of the coupling bolt 4.
  • a spacer 11 is placed on the plate 10, the thickness of which is such that a driving wedge 9 can be inserted with its narrow side into the opening of the pull rod 3. Then the driving wedge 9 is driven into the opening with hammer blows. The hammer blows and thus the extraction process are stopped when it can be seen that the sink has loosened. The extraction device is then disassembled by loosening the driving wedge 9 and the coupling bolt 4, unhooking the extraction device from the angle iron 13 and removing the sink 1.
  • the present invention makes it possible to remove sink blocks from the perforated blocks in an extremely safe and reliable manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

A withdrawal device for ladle bricks with a traction device connected to the brick (1) via a pull-rod (3). Safe withdrawal of the brick (1) is achieved by the provision of a device which can exert pulsed forces on the brick (1) in addition to the forces transferable from the withdrawal device to the brick (1).

Description

Ausziehvorrichtung für Pfannenspülsteine Pull-out device for pan sink stones
Die Erfindung betrifft eine Ausziehvorrichtung für Pfannenspülsteine mit einer Zugvorrichtung, die über eine Zugstange mit dem Spülstein verbindbar ist.The invention relates to a pull-out device for pan sinks with a pulling device which can be connected to the sink via a pull rod.
Aus der DE-Al- 33 30 105 ist eine Ausziehvorrichtung für einen Gasspülstein bekannt, die aus einem Gestell besteht, an dem eine Gewindespindel vorgesehen ist, die über ein Joch Zugkräfte auf die mit dem herauszuziehenden Spül- stein verbundene Zugstange ausüben kann. Das Herausziehen eines Spülsteines ist eine heikle und schwierige Aufgabe, da einerseits relativ große Kräfte auf diesen Spülstein ausge¬ übt werden müssen, um ihn vom Lochstein zu lösen, anderer¬ seits jedoch eine Beschädigung der Ausmauerung verhindert werden soll. Mit der in dieser Vorveröffentlichung beschriebenen Ausziehvorrichtung ist nun eine dosierte Kraftanwendung möglich, jedoch reichen die durch eine solche Vorrichtung ausübbaren Kräfte nicht immer aus, um einen Spülstein aus seinem Sitz zu lösen.A pull-out device for a gas purging plug is known from DE-A1- 33 30 105, which consists of a frame on which a threaded spindle is provided, which can exert tensile forces on the pull rod connected to the purging plug to be pulled out. Pulling out a sink is a delicate and difficult task, since on the one hand relatively large forces have to be exerted on this sink in order to detach it from the perforated block, but on the other hand damage to the brickwork is to be prevented. With the pull-out device described in this prior publication, a metered application of force is now possible, but the forces that can be exerted by such a device are not always sufficient to detach a sink from its seat.
Aus der AT-B- 383 831 ist eine Vorrichtung zum Heraus¬ ziehen eines GasspülSteines bekannt, bei der die Trägheits- kräfte eines Gleitkörpers zum Lösen des Spülsteines einge¬ setzt werden. Die dabei auftretenden stoßartigen Kraft¬ spitzen ermöglichen das Lösen auch von sehr fest sitzenden Spülsteinen. Die ausgeübten Kräfte sind jedoch bei einer solchen Vorrichtung nur schwer dosierbar, und bei einem unerwartet schnellen Lösen des Spülsteines aus dem Lochstein kommt es häufig zu Beschädigungen.From AT-B-383 831 a device for pulling out a gas purging stone is known, in which the inertial forces of a sliding body are used to release the purging stone. The jerky force peaks that occur in this way enable even tightly fitting sink blocks to be released. However, the forces exerted are difficult to meter in such a device, and if the flushing plug is unexpectedly quickly released from the perforated block, damage often occurs.
Weiters sind aus der DE-Al- 38 33 504 Ausziehvorrich¬ tungen bekannt, die über das Einschlagen eines Treibkeiles entsprechende Zugkräfte auf den Spülstein ausüben. um entsprechend große Kräfte sicherstellen zu können, muß ein solcher Treibkeil einen relativ geringen Steigungswinkel aufweisen. Es ist daher vor dem Einschlagen des Treibkeiles eine genaue Justierung der Ausziehvorrichtung vorzunehmen, da ansonsten der Treibkeil entweder nicht eingesetzt werden kann oder ein zu geringes Stück des Keiles zum Austreiben zur Verfügung steht. Aufgabe der vorliegenden Erfindung ist es, diese Nach¬ teile zu vermeiden und eine Ausziehvorrichtung für Pfannen- spülsteine zu schaffen, die große Kräfte auf den Spülstein ausüben kann, dabei einfach und leicht zu bedienen ist und durch eine dosierbare Kraftanwendung Beschädigungen von Spülstein oder Lochstein vermeidet.Furthermore, DE-Al-38 33 504 pull-out devices are known which exert corresponding tensile forces on the sink by driving in a driving wedge. In order to be able to ensure correspondingly large forces, such a driving wedge must have a relatively small pitch angle. It is therefore necessary to make an exact adjustment of the pull-out device before driving in the driving wedge, since otherwise the driving wedge can either not be used or an insufficient amount of the wedge is available for driving out. It is an object of the present invention to avoid these disadvantages and to provide a pull-out device for pan sinks, which can exert large forces on the sink, is simple and easy to use, and avoids damage to the sink or perforated stone through the application of force .
Erfindungsgemäß ist daher eine Einrichtung vorgesehen, die zusätzlich zu den von der Zugvorrichtung auf den Spül¬ stein übertragbaren Kräften stoßartig wirkende Kräfte auf den Spülstein ausüben kann. Die Zugvorrichtung kann bei der vorliegenden Erfindung relativ schwach dimensioniert sein, da sie nur einen Teil der zum Austreiben des Spülsteines erforderlichen Kraft aufbringen muß. Lediglich sehr locker sitzende Spülsteine können durch die Zugvorrichtung allein ausgezogen werden. Für fester sitzende Spülsteine kann zusätzlich eine stoßartig wirkende Kraft aufgebracht werden. Es hat sich überraschenderweise herausgestellt, daß durch die Überlagerung einer geringeren, kontinuierlich wirkenden Kraft mit einer stoßartig wirkenden Kraft insgesamt eine wesentliche Verbesserung beim Herausziehen von Spülsteinen ergibt.According to the invention, a device is therefore provided which, in addition to the forces which can be transmitted from the pulling device to the sink, can exert impulsive forces on the sink. The pulling device can be dimensioned relatively weak in the present invention, since it only has to exert part of the force required to expel the sink. Only very loose sink stones can be pulled out by the pulling device alone. For tightly fitting sink stones, an impact force can also be applied. Surprisingly, it has been found that the superimposition of a lower, continuously acting force with a force acting in a jerk manner results in a substantial improvement when pulling out sink blocks.
Besonders günstig ist es, wenn die Einrichtung zur Aus¬ übung von zusätzlichen Kräften als Öffnung in der Zugstange ausgeführt ist, die zur Aufnahme eines Treibkeils vorgesehen ist. Der Treibkeil ermöglicht es, sehr große Kräfte stoßartig aufzubringen, wobei es jedoch auch für den durchschnittlichen Monteur möglich ist, diese Kräfte einigermaßen zu dosieren.It is particularly favorable if the device for exerting additional forces is designed as an opening in the pull rod, which is provided for receiving a driving wedge. The driving wedge makes it possible to apply very large forces in abrupt fashion, although it is also possible for the average fitter to dose these forces to some extent.
Die erfindungsgemäße Ausziehvorrichtung läßt sich besonders einfach und sicher handhaben, wenn die Zugvorrich¬ tung als Hydraulikzylinder ausgeführt ist.The pull-out device according to the invention can be handled particularly simply and safely if the pulling device is designed as a hydraulic cylinder.
Im folgenden wird die Erfindung anhand des in Figuren dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigen: Fig. 1 eine erfindungsgemäße Ausziehvorrichtung in einem Teilschnitt in Längsrichtung,The invention is explained in more detail below on the basis of the exemplary embodiment illustrated in the figures. 1 shows a pull-out device according to the invention in a partial section in the longitudinal direction,
Fig. 2 eine Draufsicht auf die Ausziehvorrichtung von Fig. 1 und Fig. 3 eine Stirnansicht der Ausziehvorrichtung von Fig. 1. Der in einem Lochstein 12 sitzende Spülstein 1 ist über sein Gasanschlu röhr 2 mit einer Zugstange 3 der Ausziehvor¬ richtung verschraubbar. Diese Zugstange 3 ist mittels eines Kupplungsbolzens 4 über ein Joch 5 mit einem Hydraulik- zylinder 6 gekoppelt. Der Hydraulikzylinder 6 stützt sich über ein Gestell 7 am Pfannenboden 8 ab. In der Zugstange 3 ist eine Öffnung zur Aufnahme eines Treibkeils 9 vorgesehen. Zwischen diesem Treibkeil 9 und einer mit dem Gestell 7 ver¬ bundenen Platte 10 ist eine auswechselbare Distanzscheibe 11 einfügbar.FIG. 2 shows a top view of the pull-out device from FIG. 1 and FIG. 3 shows an end view of the pull-out device from FIG. 1. The sink 1 seated in a perforated brick 12 can be screwed via its gas connection tube 2 to a pull rod 3 of the pull-out device. This tie rod 3 is coupled to a hydraulic cylinder 6 by means of a coupling bolt 4 via a yoke 5. The hydraulic cylinder 6 is supported on the pan base 8 via a frame 7. An opening for receiving a driving wedge 9 is provided in the pull rod 3. An interchangeable spacer 11 can be inserted between this driving wedge 9 and a plate 10 connected to the frame 7.
Zum Entfernen eines Spülsteines 1 wird die Pfanne üblicherweise in liegende Stellung gebracht, wobei sich der Pfannenboden 8 in vertikaler Position befindet. Zunächst wird nun die Zugstange 3 auf das Gasanschlußröhr 2 aufge- schraubt. Sodann wird die Ausziehvorrichtung in ein am Pfannenboden 8 als Halterung angeschweißtes Winkeleisen 13 eingehängt, so daß sich das Gestell 7 am Pfannenboden 8 abstützt. Dann wird mittels des Kupplungsbolzens 4 eine Steckverbindung zwischen dem Joch 5 und der Zugstange 3 hergestellt. Durch den mittels eines Handhebels 14 betätigbaren Hydraulikzylinder 6 wird eine vorbestimmte Zugkraft über das Joch 5 und die Zugstange 3 auf den Spülstein 1 ausgeübt. Im allgemeinen wird diese Zugkraft nicht ausreichen, um den Spülstein 1 aus dem Lochstein 12 auszuziehen. Daraufhin wird eine Distanzscheibe 11 auf die Platte 10 aufgesetzt, deren Dicke so bemessen ist, daß ein Treibkeil 9 gerade mit seiner schmalen Seite in die Öffnung der Zugstange 3 einsetzbar ist. Sodann wird mit Hammer¬ schlägen der Treibkeil 9 in die Öffnung hineingetrieben. Die Hammerschläge und damit der Ausziehvorgang werden beendet, wenn ersichtlich ist, daß sich der Spülstein gelöst hat. Sodann erfolgt die Demontage der Ausziehvorrichtung durch Lösen des Treibkeils 9 und des Kupplungsbolzens 4, Aushängen der Ausziehvorrichtung aus dem Winkeleisen 13 und Entfernen des Spülsteins 1.To remove a sink 1, the pan is usually brought into a lying position, the pan base 8 being in a vertical position. First, the pull rod 3 is screwed onto the gas connection tube 2. The pull-out device is then suspended in an angle iron 13 welded to the pan base 8 as a holder, so that the frame 7 is supported on the pan base 8. Then a plug connection between the yoke 5 and the pull rod 3 is made by means of the coupling bolt 4. The hydraulic cylinder 6, which can be actuated by means of a hand lever 14, exerts a predetermined tensile force on the sink 1 via the yoke 5 and the tie rod 3. In general, this pulling force will not be sufficient to pull the sink 1 out of the perforated block 12. Then a spacer 11 is placed on the plate 10, the thickness of which is such that a driving wedge 9 can be inserted with its narrow side into the opening of the pull rod 3. Then the driving wedge 9 is driven into the opening with hammer blows. The hammer blows and thus the extraction process are stopped when it can be seen that the sink has loosened. The extraction device is then disassembled by loosening the driving wedge 9 and the coupling bolt 4, unhooking the extraction device from the angle iron 13 and removing the sink 1.
Die vorliegende Erfindung ermöglicht es, Spülsteine äußerst sicher und zuverlässig aus den Lochsteinen zu ent¬ fernen. The present invention makes it possible to remove sink blocks from the perforated blocks in an extremely safe and reliable manner.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Ausziehvorrichtung für Pfannenspülsteine (1) mit einer Zugvorrichtung, die über eine Zugstange (3) mit dem Spülstein (1) verbindbar ist, gekennzeichnet durch eine Einrichtung, die zusätzlich zu den von der Zugvorrichtung auf den Spülstein (1) übertragbaren Kräften stoßartig wirkende Kräfte auf den Spülstein (1) ausüben kann.1. pull-out device for ladle sinks (1) with a pulling device which can be connected via a pull rod (3) to the sink (1), characterized by a device which, in addition to the forces which can be transmitted from the pulling device to the sink (1), acts in an abrupt manner Can exert forces on the sink (1).
2. Ausziehvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zur Ausübung von zusätzlichen Kräften als Öffnung in der Zugstange (3) ausgeführt ist, die zur Aufnahme eines Treibkeils (9) vorgesehen ist.2. Pull-out device according to claim 1, characterized in that the device for exerting additional forces is designed as an opening in the pull rod (3) which is provided for receiving a driving wedge (9).
3. Ausziehvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Zugvorrichtung als Hydraulikzylinder (6) ausgeführt ist. 3. Pull-out device according to one of claims 1 or 2, characterized in that the pulling device is designed as a hydraulic cylinder (6).
PCT/AT1991/000079 1990-07-02 1991-07-01 Withdrawal device for ladle bricks WO1992000392A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT140590 1990-07-02
ATA1405/90 1990-07-02

Publications (1)

Publication Number Publication Date
WO1992000392A1 true WO1992000392A1 (en) 1992-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1991/000079 WO1992000392A1 (en) 1990-07-02 1991-07-01 Withdrawal device for ladle bricks

Country Status (3)

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AU (1) AU8065491A (en)
WO (1) WO1992000392A1 (en)
ZA (1) ZA915051B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0639749A1 (en) * 1992-02-14 1995-02-22 Ajax Magnethermic Corporation A furnace refractory extraction system and method
US6936582B1 (en) 1997-09-09 2005-08-30 Curis, Inc. Synergistic effects of OP/BMP morphogens and GDNF/NGF neurotrophic factors
DE102005018021A1 (en) * 2005-04-18 2006-10-26 esb Schweißbetrieb Burbach & Bender GmbH & Co. KG Centering assembly for gas scouring stone within nozzle brick also incorporates retraction shaker unit
DE102008031576A1 (en) * 2008-07-03 2010-01-28 esb Schweißbetrieb Burbach & Bender GmbH & Co. KG Withdrawing device for withdrawing a gas sink of a metallurgical vessels, comprises a bearing device for bearing the withdrawing device on the metallurgical vessels, and a drawing device for coupling and drawing gas sink
WO2024110602A1 (en) 2022-11-25 2024-05-30 Vesuvius Group, S.A. Gas purge plug and system for easy installation of the gas purge plug in a metallurgical vessel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137961A1 (en) * 1983-08-20 1985-04-24 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Withdrawing device for a gas bubbling plug
EP0364723A1 (en) * 1988-10-01 1990-04-25 Didier-Werke Ag Gas bubbling device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0137961A1 (en) * 1983-08-20 1985-04-24 Radex Deutschland Aktiengesellschaft für feuerfeste Erzeugnisse Withdrawing device for a gas bubbling plug
EP0364723A1 (en) * 1988-10-01 1990-04-25 Didier-Werke Ag Gas bubbling device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 271 (C-311)(1994) 29. Oktober 1985 & JP,A,58 228 557 ( SHIN NIPPON SEITETSU K.K. ) 28. Juni 1985 siehe Zusammenfassung *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0639749A1 (en) * 1992-02-14 1995-02-22 Ajax Magnethermic Corporation A furnace refractory extraction system and method
US6936582B1 (en) 1997-09-09 2005-08-30 Curis, Inc. Synergistic effects of OP/BMP morphogens and GDNF/NGF neurotrophic factors
US7507709B2 (en) 1997-09-09 2009-03-24 Stryker Corporation Synergistic effects of OP/BMP morphogens and GDNF/NGF neurotrophic factors
DE102005018021A1 (en) * 2005-04-18 2006-10-26 esb Schweißbetrieb Burbach & Bender GmbH & Co. KG Centering assembly for gas scouring stone within nozzle brick also incorporates retraction shaker unit
DE102005018021B4 (en) * 2005-04-18 2007-05-03 esb Schweißbetrieb Burbach & Bender GmbH & Co. KG Extractor for a gas purging plug
DE102008031576A1 (en) * 2008-07-03 2010-01-28 esb Schweißbetrieb Burbach & Bender GmbH & Co. KG Withdrawing device for withdrawing a gas sink of a metallurgical vessels, comprises a bearing device for bearing the withdrawing device on the metallurgical vessels, and a drawing device for coupling and drawing gas sink
WO2024110602A1 (en) 2022-11-25 2024-05-30 Vesuvius Group, S.A. Gas purge plug and system for easy installation of the gas purge plug in a metallurgical vessel

Also Published As

Publication number Publication date
AU8065491A (en) 1992-01-23
ZA915051B (en) 1992-04-29

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