EP2893992B1 - Gas flushing element and associated gas connection element - Google Patents

Gas flushing element and associated gas connection element Download PDF

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Publication number
EP2893992B1
EP2893992B1 EP14150656.8A EP14150656A EP2893992B1 EP 2893992 B1 EP2893992 B1 EP 2893992B1 EP 14150656 A EP14150656 A EP 14150656A EP 2893992 B1 EP2893992 B1 EP 2893992B1
Authority
EP
European Patent Office
Prior art keywords
gas
recess
connection
gas purging
element according
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.)
Not-in-force
Application number
EP14150656.8A
Other languages
German (de)
French (fr)
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EP2893992A1 (en
Inventor
Bernd Trummer
Michael Klikovich
Roman Kulp
Leopold Kneis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Refractory Intellectual Property GmbH and Co KG
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Refractory Intellectual Property GmbH and Co KG
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.)
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Publication date
Priority to EP14150656.8A priority Critical patent/EP2893992B1/en
Application filed by Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to ES14150656.8T priority patent/ES2563192T3/en
Priority to RS20160054A priority patent/RS54558B1/en
Priority to PL14150656T priority patent/PL2893992T3/en
Priority to US15/037,717 priority patent/US9879916B2/en
Priority to PCT/EP2014/074261 priority patent/WO2015104079A1/en
Priority to MX2016005652A priority patent/MX2016005652A/en
Priority to CN201480059884.6A priority patent/CN105658354A/en
Publication of EP2893992A1 publication Critical patent/EP2893992A1/en
Application granted granted Critical
Publication of EP2893992B1 publication Critical patent/EP2893992B1/en
Priority to HRP20160147TT priority patent/HRP20160147T1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
    • F27D17/002—Details of the installations, e.g. fume conduits or seals
    • 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
    • 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
    • C21C5/34—Blowing through the bath
    • 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

Definitions

  • the invention relates to a gas purging element for metallurgical applications, for example for installation in a metallurgical vessel and an associated gas connection element.
  • a gas purging element also called gas purging plug, is used for blowing in gases, if appropriate also gas / solid mixtures, into a melt to be treated, in particular a metallurgical melt.
  • gaseous treatment fluid in a gas purging plug with directed porosity (English: directed porosity) is guided along corresponding channels / slots ( EP 0 609 562 A1 ), in gas purging bricks with so-called undirected porosity along a corresponding irregular pore volume (similar to a sponge).
  • the arrangement of a gas purging plug in the bottom or the wall of a metallurgical vessel can be done in different ways.
  • the gas purging plug is placed in an associated well block.
  • the dishwasher is secured to the metallurgical vessel with a mechanism.
  • the mechanism is opened.
  • An example of this shows the EP 363651 B1 , This dishwasher has at the same time a gas distribution space at the cold end.
  • the gas supply pipe according to EP 609562 A1 is also attached to a plate, which in turn is secured by means of impact anchors in the ceramic part of the gas purging plug.
  • the gas purging plug In order to avoid a diffusion of the gas into the adjacent refractory material, it is for example from the EP 0 148 337 A1 known to form the gas purging plug with a metal jacket.
  • the metal sheet usually runs on the circumference and in the bottom area of the dishwasher.
  • the bottom plate has an opening, which is followed by a gas connection pipe which protrudes freely over the bottom plate. Gas is in the gas connection pipe in the gas permeable ceramic part of the purifier.
  • the gas connection pipe interferes with transport and installation of the dishwasher.
  • the invention has for its object to offer a structurally simple way how the assembly or disassembly of a gas purging plug can be simplified and a loss of gas is minimized.
  • a gas purging plug without sheet metal casing is easy to transport. However, it is very difficult to create a simple and tight connection to a gas source.
  • the dimensional accuracy of the rinser and the associated installation device ( EP 0 363 651 B1 ) must be very high to avoid damage and leaks. This is difficult to realize on an often hot metallurgical vessel.
  • the invention then relates to a gas purging element for metallurgical applications having the features of claim 1.
  • the essential feature is the recess, which has a first portion (functional part) of a detachable, positive connection with a gas connection element.
  • This recess can be formed in different ways, for example as part of one of the following connection constructions: screw connection, bayonet connection, pressure / pressure quick connection, push / turn quick connection. These include clamp connections or snap connections.
  • a gas line for example, simply pressed into the recess and / or rotated until the gas line with the corresponding connecting portion in the recess of the gas purging element receives the desired positive connection. This only takes a few seconds and is also readily possible on a hot metallurgical vessel at any time, possibly also via a manipulator (robot).
  • Each alignment / adjustment, pivoting, additional fastening by a mechanism on the wall of the metallurgical vessel can be omitted.
  • connection techniques An essential feature of the invention and the said connection techniques is that these positive connections are readily carried out as gas-tight connections and solvable. To replace a gas purging, the gas line on reverse Removed (compared to the assembly) and later reused.
  • the compounds mentioned allow a frictional connection between gas purging plug and gas connection element without additional equipment.
  • the depression starting from the lower end face, has at least one of the following geometric shapes: cylinder, cone, truncated cone, prism.
  • the horizontal cross section of the depression (that is to say perpendicular to the main direction of flow of the gas through the flushing element) can accordingly be round, rectangular, polygonal, for example.
  • It may also be a first portion (viewed from the end face of the gas purging of) cylindrical and an adjoining section frustoconical design.
  • the cylindrical part allows a good guidance and fixation, the frustoconical part can be designed as an additional seal.
  • a gas distribution chamber can be formed in the ceramic refractory body.
  • the gas supplied via the gas line can then first flow into the gas distribution chamber and from there through the gas-permeable ceramic sections.
  • an anti-penetration barrier against penetrating molten metal can be formed in the ceramic body.
  • the break-through safeguard may be constructed as an exchangeable component which is connected to a corresponding portion of the gas supply line or to the recess.
  • the portion of the recess which forms the first portion of the connection to the gas connection element can be formed in-situ in the ceramic material (ie consist of ceramic) and / or be an independent (discrete) component.
  • the recess can have a threaded portion formed on the wall side in the ceramic;
  • a sleeve or nut can be used with a corresponding internal thread in the recess and / and glued there.
  • the gas purging element may not be formed with an outer metal shell.
  • the metal sheath may surround the entire spinner (except the top and bottom of the cold end recess), only the bottom of the refractory ceramic body or only the bottom face of the refractory ceramic body (again without the recess portion).
  • the gas purging element may be formed so that no parts / elements protrude beyond the lower end surface.
  • the bubbler is "flat" at the cold end.
  • the lower end face forms the end of the cold end of the flushing element. Every kind of Closure parts, fasteners, bearings or the like, which protrude beyond the floor to the outside, can be dispensed with according to the invention.
  • the second end forms a mating thread for a thread-like portion of the recess of the gas purging element or a portion of a bayonet closure.
  • the first end of the gas connection element can be designed for connection to a (further) gas supply line or be connected directly to a gas source.
  • the gas purging element may be made of metal and / or another material which is stable at the temperatures prevailing when the gas purging element is applied to a metallurgical vessel at its "cold end".
  • the depression in the gas purging element and the corresponding end of the gas connection element form a male part or a female part of an associated positive connection.
  • the recess can also be designed in the manner of an adapter, by means of which the gas connection element is fastened in the gas purging element.
  • connection makes it possible to connect adjacent sections (of the gas supply system and the flushing element) in the flow direction of the gas in a simple manner.
  • the compound also serves to create a largely gas-tight connection. This can be realized, for example, in that corresponding sections of the connection have a corresponding conical / frusto-conical shape and are connected to one another.
  • an additional securing element mechanically secure / fix the adjacent sections in the connection position.
  • the reference numeral 10 describes a frusto-conical gas purging plug, of which only the lower end is shown. From a flat bottom 12, a metal cylinder 14 with internal thread 16 extends into a gas-tight ceramic outer part 18 of the gas purging plug 10.
  • the internal thread 16 thus delimits a cylindrical cavity (recess 20) into which an associated gas connection element 50 (a gas line) can be inserted.
  • the gas line 50 is at its in FIG. 1 illustrated upper, second end 52 formed with a corresponding external thread 54.
  • annular metal plate 22 is fixed (welded), which has a central opening 24 corresponding to the cavity 20 and from the edge of a cylindrical wall 26 toward an upper, not shown end of Gas Series Element protrudes, so that results for the parts 22, 26 a pot-like geometry with a hole in the ground.
  • This "pot” serves to receive a lower end 28 of a gas-permeable ceramic part 30.
  • This part 30 is on the bottom side formed with a central recess 32, so is only marginally on the sheet 22 and peripherally adjacent in the lower portion against the wall 26 and in the section above the gas-impermeable part 18 of the gas purging element 10th
  • a gas connection is created by the gas connection element 50 is connected to a gas source and screwed with its thread 54 on the thread 16 of the gas purging element 10.
  • gas purging process can begin immediately. Gas then flows through the gas connection element 50 (arrow G direction) and thus through the cavity 20 into the gas distribution chamber (formed by the return 32) and further through the open porosity of the gas permeable section 30 (arrow G) until the gas flushes the gas Leaves element 10 via its (not shown) upper end face and enters a corresponding molten metal.
  • the illustrated gas purging plug has a flat bottom 12. Outwardly (in the illustrated functional position: downwards), there are no parts during transport and installation of the gas purging element 10. This is an essential feature of the gas purging element and facilitates the assembly / connection of a gas line (a gas connection element) after installation of the gas purging element in a bottom or wall of a metallurgical melting vessel.
  • this connection is designed as a so-called quick coupling.
  • a "male part” 16 'in the cavity 20 is arranged.
  • the part 16 ' is fixed to the bottom 22 and protrudes down into the cavity 20 and approximately to the bottom 12 of the gas purging element 10.
  • the part 16' has approximately a cylindrical shape with a tapered annular portion 17th
  • a "female part" 54 'of the quick coupling is formed instead of the external thread 54, this part 54' is pot-shaped and has an annular constriction 55, which is designed corresponding to the tapered portion 17 of the part 16 ', so that at Sliding the part 54 'on the part 16', the annular constriction 55 can spring into the tapered portion 17, to which the part 54 'is formed with a certain elasticity.
  • the dimensioning of the cavity 20 must be sufficiently large to accommodate the part 54 and preferably so large that the part 54 'rests with its cylindrical outer surface in alignment with the cylindrical outer wall of the cavity 20 in the assembled state.
  • the bottom of the gas flushing element is a sheet metal floor.
  • FIG. 3 similar to the embodiment according to FIG. 2 , However, the gas purging element 10 and the gas connection element 50 are not connected to one another via a quick coupling, but via a kind of bayonet closure.
  • the part 16 has an L-shaped recess in its peripheral wall, which serves to receive a pin 55 ', which projects perpendicularly from the inner wall of the part 54".
  • the second end of the gas connection element 50 is pushed axially onto the part 16 ", the pin 55 'first extending along the axially extending section of the L-shaped recess Gas connection element 50 relative to the part 16 "rotated so that the pin 55 'enters the horizontal portion of the L-shaped groove and is secured against axial loosening.
  • the gas purging element 10 after FIG. 3 also has a peripheral metal jacket 40 which is connected in a gastight manner to a bottom plate 12, which is interrupted only in the region of the cylinder 14.

Description

Die Erfindung betrifft ein Gasspül-Element für metallurgische Anwendungen, zum Beispiel zum Einbau in ein metallurgisches Gefäß sowie ein zugehöriges Gasanschluss-Element.The invention relates to a gas purging element for metallurgical applications, for example for installation in a metallurgical vessel and an associated gas connection element.

Ein Gasspül-Element, auch Gasspülstein genannt, dient zum Einblasen von Gasen, gegebenenfalls auch Gas-/Feststoffgemischen, in eine zu behandelnde Schmelze, insbesondere eine metallurgische Schmelze. Dabei wird das gasförmige Behandlungsfluid bei einem Gasspülstein mit gerichteter Porosität (english: directed porosity) entlang korrespondierender Kanäle/ Schlitze geführt ( EP 0 609 562 A1 ), bei Gasspülsteinen mit so genannter ungerichteter Porosität (english: random porosity) entlang eines korrespondierenden unregelmäßigen Porenvolumens (ähnlich wie bei einem Schwamm).A gas purging element, also called gas purging plug, is used for blowing in gases, if appropriate also gas / solid mixtures, into a melt to be treated, in particular a metallurgical melt. In this case, the gaseous treatment fluid in a gas purging plug with directed porosity (English: directed porosity) is guided along corresponding channels / slots ( EP 0 609 562 A1 ), in gas purging bricks with so-called undirected porosity along a corresponding irregular pore volume (similar to a sponge).

Die Anordnung eines Gasspülsteins im Boden oder der Wand eines metallurgischen Gefäßes kann auf unterschiedliche Art und Weise erfolgen. Bei einer typischen Montage wird der Gasspülstein in einem zugehörigen Lochstein (english: well block) angeordnet. Außen, an dem Ende, an dem das Gas zugeführt wird (sogenanntes "kaltes Ende"), wird der Spüler mit einer Mechanik am metallurgischen Gefäß gesichert. Zur Demontage beziehungsweise zum Austausch des Spülers wird die Mechanik geöffnet. Ein Beispiel dazu zeigt die EP 363651 B1 . Dieser Spüler weist am kalten Ende gleichzeitig einen Gasverteilraum auf.The arrangement of a gas purging plug in the bottom or the wall of a metallurgical vessel can be done in different ways. In a typical installation, the gas purging plug is placed in an associated well block. Externally, at the end at which the gas is supplied (so-called "cold end"), the dishwasher is secured to the metallurgical vessel with a mechanism. To disassemble or replace the purifier, the mechanism is opened. An example of this shows the EP 363651 B1 , This dishwasher has at the same time a gas distribution space at the cold end.

Beim Gasspülelement gemäß DE 4312981 A1 wird ein Gaszuführrohr endseitig an einer Flanschplatte angeschweißt und an einer Hinterschneidung einer Ausnehmung des Gasspülelementes axial abgestützt.In the gas flushing element according to DE 4312981 A1 a Gaszuführrohr is welded end to a flange plate and axially supported on an undercut a recess of the Gasspülelementes.

Das Gaszuführrohr gemäß EP 609562 A1 wird ebenfalls an einer Platte befestigt, die wiederum mit Hilfe von Einschlagankern im keramischen Teil des Gasspülsteins befestigt wird.The gas supply pipe according to EP 609562 A1 is also attached to a plate, which in turn is secured by means of impact anchors in the ceramic part of the gas purging plug.

Gasspülsteine der genannten Art und zugehörige Montagevorrichtungen haben sich seit Jahrzehnten bewährt. Ein Problem besteht jedoch darin, dass der Demontage-/Montageaufwand zum Auswechseln eines Gasspül-Elementes groß ist und lange dauert.Gas purging of the type mentioned and associated mounting devices have been proven for decades. A problem, however, is that the disassembly / assembly effort for replacing a gas purging element is large and takes a long time.

Um eine Diffusion des Gases in das benachbarte Feuerfestmaterial zu vermeiden ist es zum Beispiel aus der EP 0 148 337 A1 bekannt, den Gasspülstein mit einem Blechmantel auszubilden. Das Blech verläuft meist umfangsseitig und im Bodenbereich des Spülers. Das Bodenblech weist eine Öffnung auf, an die sich ein Gasanschlussrohr anschließt, das frei über das Bodenblech vorsteht. Gas wird über das Gasanschlussrohr in den gasdurchlässigen keramischen Teil des Spülers geleitet. Das Gasanschlussrohr stört beim Transport und beim Einbau des Spülers.In order to avoid a diffusion of the gas into the adjacent refractory material, it is for example from the EP 0 148 337 A1 known to form the gas purging plug with a metal jacket. The metal sheet usually runs on the circumference and in the bottom area of the dishwasher. The bottom plate has an opening, which is followed by a gas connection pipe which protrudes freely over the bottom plate. Gas is in the gas connection pipe in the gas permeable ceramic part of the purifier. The gas connection pipe interferes with transport and installation of the dishwasher.

Der Erfindung liegt die Aufgabe zugrunde, eine konstruktiv einfache Möglichkeit anzubieten, wie die Montage beziehungsweise Demontage eines Gasspülsteins vereinfacht werden kann und ein Gasverlust minimiert wird.The invention has for its object to offer a structurally simple way how the assembly or disassembly of a gas purging plug can be simplified and a loss of gas is minimized.

Die Erfindung geht von folgenden Überlegungen aus:

  • Ein blechummantelter Gasspülstein ( EP 0 148 337 A1 ) hat viele Vorteile. Er hat eine hohe Maßgenauigkeit und vermeidet Gasverlust. Allerdings stört das abstehende Gasanschlussrohr beim Transport und bei der Montage.
The invention is based on the following considerations:
  • A sheet-coated gas purging plug ( EP 0 148 337 A1 ) has many advantages. He has a high dimensional accuracy and avoids gas loss. However, the protruding gas connection pipe interferes with transport and assembly.

Ein Gasspülstein ohne Blechummantelung ist leicht zu transportieren. Allerdings ist es sehr schwierig, eine einfache und dichte Verbindung zu einer Gasquelle zu schaffen. Die Maßgenauigkeit des Spülers und der zugehörigen Einbauvorrichtung ( EP 0 363 651 B1 ) muss sehr hoch sein, um Schäden und Undichtigkeiten zu vermeiden. Das ist an einem oft heißen metallurgischen Gefäß nur schwer zu realisieren.A gas purging plug without sheet metal casing is easy to transport. However, it is very difficult to create a simple and tight connection to a gas source. The dimensional accuracy of the rinser and the associated installation device ( EP 0 363 651 B1 ) must be very high to avoid damage and leaks. This is difficult to realize on an often hot metallurgical vessel.

Die Erfindung zielt deshalb in eine andere Richtung: Das wesentliche Merkmal ist, das Gasspülelement so zu konstruieren, dass eine zugehörige Gasleitung im Inneren des Spülers montiert werden kann. Damit werden folgende Effekte erzielt:

  • Das kalte Ende des Spülers wird durch die untere Stirnfläche beziehungsweise einen entsprechenden Blechmantel definiert, es entfallen vorspringende Teile wie angeschweißte Gasanschlussrohre, die nach außen vorstehen.
  • Ein Gasanschluss erfolgt im Inneren des Spülers, also genau an der Stelle, wo das Gas benötigt wird.
  • Zum Anschluss einer entsprechenden Gasleitung wird eine Vertiefung am kalten Ende des Gasspülsteins vorgesehen. Der keramische Teil des Spülelements umfasst also den Gasanschluss. Dadurch kann keramisches Material gespart werden.
  • Die Vertiefung dient nicht nur zum Anschluss einer Gasleitung, sondern auch zur Führung und Befestigung der Gasleitung.
  • Das ermöglicht es, über eine bestimmte axiale Länge (vom kalten Ende des Gasspülelements zum gegenüberliegenden, heißen Ende betrachtet) eine Führung zwischen Gasspülelement und Gasleitung auszubilden. Das ermöglicht es gleichzeitig, die beiden Teile ohne aufwändige Mechaniken zu verbinden. Die Gasanschlussleitung kann zum Beispiel in die Vertiefung eingeschraubt werden. Weitere Verankerungen für die Gasleitung sind möglich aber nicht notwendig. Die komplizierten Schwenkmechanismen etc. entfallen.
The invention therefore aims in a different direction: the essential feature is to construct the gas purging element so that an associated gas line can be mounted inside the purging device. This achieves the following effects:
  • The cold end of the dishwasher is defined by the lower end face or a corresponding metal jacket, it eliminates protruding parts such as welded gas connection pipes, which protrude outward.
  • A gas connection takes place inside the purifier, exactly at the point where the gas is needed.
  • To connect a corresponding gas line, a depression is provided at the cold end of the gas purging plug. The ceramic part of the flushing element thus comprises the gas connection. As a result, ceramic material can be saved.
  • The recess serves not only to connect a gas line, but also to guide and attach the gas line.
  • This makes it possible to form a guide between gas purging element and gas line over a certain axial length (viewed from the cold end of the Gasspülelements to the opposite, hot end). This makes it possible to connect the two parts at the same time without complex mechanisms. The gas connection line can be screwed into the recess, for example. Other anchorages for the gas line are possible but not necessary. The complicated pivoting mechanisms etc. are eliminated.

In ihrer allgemeinsten Ausführungsform betrifft die Erfindung danach ein Gasspül-Element für metallurgische Anwendungen mit den Merkmalen des Anspruchs 1.In its most general embodiment, the invention then relates to a gas purging element for metallurgical applications having the features of claim 1.

Das wesentliche Merkmal ist die Vertiefung, die einen ersten Abschnitt (Funktionsteil) einer lösbaren, formschlüssigen Verbindung mit einem Gasanschlusselement aufweist.The essential feature is the recess, which has a first portion (functional part) of a detachable, positive connection with a gas connection element.

Diese Vertiefung kann auf unterschiedliche Weise ausgebildet werden, zum Beispiel als Teil einer der folgenden Verbindungskonstruktionen: Schraubverbindung, Bajonettverbindung, Druck-/Druck-Schnellverbindung, Druck-/Dreh-Schnellverbindung. Dazu gehören auch Klammerverbindungen oder Schnappverbindungen.This recess can be formed in different ways, for example as part of one of the following connection constructions: screw connection, bayonet connection, pressure / pressure quick connection, push / turn quick connection. These include clamp connections or snap connections.

Im Fall einer Konstruktion als Schnellkupplung oder Bayonettverbindung wird eine Gasleitung zum Beispiel einfach in die Vertiefung eingedrückt und/oder gedreht bis die Gasleitung mit dem korrespondierenden Verbindungsabschnitt in der Vertiefung des Gasspülelements die gewünschte formschlüssige Verbindung eingeht. Das dauert nur wenige Sekunden und ist auch an einem heißen metallurgischen Gefäß jederzeit ohne weiteres möglich, gegebenenfalls auch über einen Manipulator (Roboter).In the case of construction as a quick coupling or bayonet connection, a gas line, for example, simply pressed into the recess and / or rotated until the gas line with the corresponding connecting portion in the recess of the gas purging element receives the desired positive connection. This only takes a few seconds and is also readily possible on a hot metallurgical vessel at any time, possibly also via a manipulator (robot).

Jedes Ausrichten/Justieren, Verschwenken, zusätzliche Befestigen durch eine Mechanik an der Wand des metallurgischen Gefäßes kann entfallen.Each alignment / adjustment, pivoting, additional fastening by a mechanism on the wall of the metallurgical vessel can be omitted.

Dies gilt auch, wenn Vertiefung und Gasanschlussleitung an ihren korrespondierenden Abschnitten Gewinde für eine Schraubverbindung aufweisen.This also applies if recess and gas connection line have threads for a screw connection at their corresponding sections.

Ein wesentliches Merkmal der Erfindung und der genannten Verbindungstechniken ist, dass diese formschlüssigen Verbindungen ohne weiteres als gasdichte Verbindungen ausgeführt und lösbar sind. Zum Auswechseln eines Gasspülers kann die Gasleitung auf umgekehrtem Weg (verglichen mit der Montage) wieder abgenommen und später wiederverwendet werden.An essential feature of the invention and the said connection techniques is that these positive connections are readily carried out as gas-tight connections and solvable. To replace a gas purging, the gas line on reverse Removed (compared to the assembly) and later reused.

Die genannten Verbindungen ermöglichen eine kraftschlüssige Verbindung zwischen Gasspülstein und Gasanschlusselement ohne Zusatzeinrichtungen.The compounds mentioned allow a frictional connection between gas purging plug and gas connection element without additional equipment.

Nach einer Ausführungsform weist die Vertiefung, ausgehend von der unteren Stirnfläche, mindestens eine der folgenden geometrischen Formen auf: Zylinder, Kegel, Kegelstumpf, Prisma. Der horizontale Querschnitt der Vertiefung (also senkrecht zur Haupt-Strömungsrichtung des Gases durch das Spülelement) kann entsprechend zum Beispiel rund, rechteckig, polygon sein.According to one embodiment, the depression, starting from the lower end face, has at least one of the following geometric shapes: cylinder, cone, truncated cone, prism. The horizontal cross section of the depression (that is to say perpendicular to the main direction of flow of the gas through the flushing element) can accordingly be round, rectangular, polygonal, for example.

Es kann auch ein erster Abschnitt (von der Stirnfläche des Gasspülers aus betrachtet) zylindrisch und ein daran anschließender Abschnitt kegelstumpfartig gestaltet sein. Der zylindrische Teil erlaubt eine gute Führung und Fixierung, der kegelstumpfartige Teil lässt sich als zusätzliche Dichtung gestalten.It may also be a first portion (viewed from the end face of the gas purging of) cylindrical and an adjoining section frustoconical design. The cylindrical part allows a good guidance and fixation, the frustoconical part can be designed as an additional seal.

In der Vertiefung oder strömungstechnisch im Anschluss an die Vertiefung, in Richtung auf die obere Stirnfläche betrachtet, kann eine Gasverteilkammer im keramischen feuerfesten Körper ausgebildet werden. Das über die Gasleitung zugeführte Gas kann dann zunächst in die Gasverteilkammer strömen und von dort durch die gasdurchlässigen keramischen Abschnitte.In the recess or fluidically following the recess, viewed in the direction of the upper end face, a gas distribution chamber can be formed in the ceramic refractory body. The gas supplied via the gas line can then first flow into the gas distribution chamber and from there through the gas-permeable ceramic sections.

Alternativ oder kumulativ kann in der Vertiefung (oder strömungstechnisch vor oder hinter der Vertiefung) eine Durchbruchsicherung gegen eindringende Metallschmelze im keramischen Körper ausgebildet werden.Alternatively or cumulatively, in the depression (or fluidically in front of or behind the depression), an anti-penetration barrier against penetrating molten metal can be formed in the ceramic body.

Die Durchbruchsicherung kann als austauschbares Bauteil konstruiert sein, das mit einem korrespondierenden Abschnitt der Gaszuführ-Leitung oder mit der Vertiefung verbunden wird.The break-through safeguard may be constructed as an exchangeable component which is connected to a corresponding portion of the gas supply line or to the recess.

Solche Durchbruchsicherungen sind an sich bekannt, jedoch bei anderen Konstruktionen von Gasspülelementen. Beispielsweise kann eine der folgenden Bauarten integriert werden:

  • Die Gaszuführleitung erhält einen wendelförmigen/spiralförmigen Verlauf, um die axiale Länge zu vergrößern.
  • Um die Gaszuführleitung wird ein gekühlter Bereich angeordnet, so dass etwaig eindringende Metallschmelze schneller einfriert (erstarrt, englisch: solidifies).
Such breakthrough fuses are known per se, but in other constructions of Gasspülelementen. For example, one of the following types can be integrated:
  • The gas supply line is given a helical / spiral course to increase the axial length.
  • A cooled area is arranged around the gas supply line, so that any infiltrating molten metal freezes faster (solidifies, English: solidifies).

Der Abschnitt der Vertiefung, der den ersten Abschnitt der Verbindung zum Gasanschlusselement bildet, kann in-situ im keramischen Material ausgebildet werden (also aus Keramik bestehen) und/oder ein eigenständiges (diskretes) Bauteil sein. Zum Beispiel bei der Schraubverbindung kann die Vertiefung wandseitig einen in der Keramik ausgeformten Gewindeabschnitt aufweisen; ebenso kann eine Hülse oder Mutter mit einem entsprechenden Innengewinde in die Vertiefung eingesetzt und/und dort eingeklebt werden.The portion of the recess which forms the first portion of the connection to the gas connection element can be formed in-situ in the ceramic material (ie consist of ceramic) and / or be an independent (discrete) component. For example, in the case of the screw connection, the recess can have a threaded portion formed on the wall side in the ceramic; Similarly, a sleeve or nut can be used with a corresponding internal thread in the recess and / and glued there.

Weitere Ausführungsformen sehen folgende Merkmale vor:

  • mindestens ein gasdurchlässiger Teil des feuerfesten keramischen Körpers verläuft von einem innenliegenden Ende der Vertiefung aus.
  • der gasdurchlässige Teil des feuerfesten keramischen Körpers, der dem innenliegenden Ende der Vertiefung benachbart ist, kann zumindest teilweise eine Metallabdeckung aufweisen. Mit anderen Worten: ein im keramischen Körper ausgebildeter gasdurchlässiger keramischer Abschnitt weist zumindest abschnittweise einen Metallboden und/oder eine Metallumhüllung auf, natürlich mit mindestens einer Öffnung zur Einleitung des Behandlungsgases von der Gasanschlussleitung und/oder einer Gasverteilkammer. Das gasauslassseitige Ende des gasdurchlässigen Abschnitts ist ebenfalls offen. Diese Ausbildung verhindert etwaigen Gasverlust und erleichtert die Herstellung.
  • Der Spüler kann insbesondere umfangsseitig und/oder bodenseitig radial zur Vertiefung aus gasdichter Keramik ausgebildet werden. Mit anderen Worten: der gasdurchlässige Teil ist von einem gasundurchlässigen Teil zumindest abschnittweise eingefasst.
  • Der Gasspüler kann mehrere gasdurchlässige Abschnitte mit unterschiedlicher Konstruktion nebeneinander (radial zur Gasströmung) und/oder hintereinander (in Richtung der Gasströmung) aufweisen.
Further embodiments provide the following features:
  • at least one gas-permeable part of the refractory ceramic body extends from an inner end of the recess.
  • the gas-permeable part of the refractory ceramic body which is adjacent to the inner end of the recess can at least partially have a metal cover. In other words, a gas-permeable ceramic section formed in the ceramic body has, at least in sections, a metal bottom and / or a metal enclosure, of course with at least one opening for introducing the treatment gas from the gas connection line and / or a gas distribution chamber. The gas outlet side end of the gas permeable portion is also open. This design prevents any gas loss and facilitates the production.
  • The dishwasher can in particular be formed circumferentially and / or bottom-side radially to the recess of gas-tight ceramic. In other words, the gas-permeable part is surrounded by a gas-impermeable part at least in sections.
  • The bubbler may have several gas-permeable sections of different construction next to each other (radially to the gas flow) and / or one behind the other (in the direction of the gas flow).

Das Gasspül-Element kann aber muss nicht mit einem äußeren Metallmantel ausgebildet werden. Der Metallmantel kann den ganzen Spüler umgeben (ausgenommen die obere Stirnfläche und den Bereich der Vertiefung am kalten Ende), nur das untere Ende des feuerfesten keramischen Körpers oder nur die untere Stirnfläche des feuerfesten keramischen Körpers (wiederum ohne den Bereich der Vertiefung).However, the gas purging element may not be formed with an outer metal shell. The metal sheath may surround the entire spinner (except the top and bottom of the cold end recess), only the bottom of the refractory ceramic body or only the bottom face of the refractory ceramic body (again without the recess portion).

Das Gasspül-Element kann so ausgebildet werden, dass keine Teile/Elemente über die untere Stirnfläche vorstehen. Mit anderen Worten: Der Gasspüler ist am kalten Ende "flach". Die untere Stirnfläche bildet den Abschluss des kalten Endes des Spülelements. Jede Art von Verschlussteilen, Befestigungselementen, Lagern oder dergleichen, die über den Boden nach außen vorstehen, kann erfindungsgemäß entfallen.The gas purging element may be formed so that no parts / elements protrude beyond the lower end surface. In other words: The bubbler is "flat" at the cold end. The lower end face forms the end of the cold end of the flushing element. Every kind of Closure parts, fasteners, bearings or the like, which protrude beyond the floor to the outside, can be dispensed with according to the invention.

Neben dem keramischen Gasspül-Element betrifft die Erfindung auch ein zugehöriges Gasanschluss-Element mit folgenden Merkmalen:

  • mit einem ersten Ende und einem zweiten Ende, wobei
  • das zweite Ende, korrespondierend zum ersten Abschnitt der Vertiefung des Gasspül-Elements, als komplementärer zweiter Abschnitt der lösbaren, formschlüssigen Verbindung mit dem Gasspül-Element ausgebildet ist.
In addition to the ceramic gas purging element, the invention also relates to an associated gas connection element having the following features:
  • with a first end and a second end, wherein
  • the second end, corresponding to the first section of the recess of the gas purging element, is designed as a complementary second section of the releasable, positive connection with the gas purging element.

Das zweite Ende bildet also zum Beispiel ein Gegengewinde für einen gewindeartigen Abschnitt der Vertiefung des Gasspül-Elementes oder einen Abschnitt eines Bajonettverschlusses.Thus, for example, the second end forms a mating thread for a thread-like portion of the recess of the gas purging element or a portion of a bayonet closure.

Das erste Ende des Gasanschluss-Elements kann zum Anschluss an eine (weitere) Gaszuführleitung ausgebildet oder direkt an eine Gasquelle angeschlossen werden.The first end of the gas connection element can be designed for connection to a (further) gas supply line or be connected directly to a gas source.

Das Gasspülelement kann aus Metall und/oder einem anderen Material bestehen, das bei den Temperaturen stabil ist, die bei der Anwendung des Gasspülements an einem metallurgischen Gefäß an dessen "kaltem Ende" herrschen.The gas purging element may be made of metal and / or another material which is stable at the temperatures prevailing when the gas purging element is applied to a metallurgical vessel at its "cold end".

Allgemein ausgedrückt bilden die Vertiefung im Gasspül-Element und das korrespondierende Ende des Gasanschluss-Elements einen Stecker (male part) beziehungsweise eine Dose (female part) einer zugehörigen formschlüssigen Verbindung.Generally speaking, the depression in the gas purging element and the corresponding end of the gas connection element form a male part or a female part of an associated positive connection.

Die Vertiefung kann auch nach Art eines Adapters ausgebildet sein, mit dessen Hilfe das Gasanschluss-Element im Gasspülelement befestigt wird.The recess can also be designed in the manner of an adapter, by means of which the gas connection element is fastened in the gas purging element.

Die Verbindung ermöglicht es, benachbarte Abschnitte (des Gaszuführsystems und des Spülelements) in Strömungsrichtung des Gases auf einfache Weise miteinander zu verbinden. Dabei dient die Verbindung auch dazu, eine weitestgehend gasdichte Verbindung zu schaffen. Dies lässt sich beispielsweise dadurch realisieren, dass korrespondierende Abschnitte der Verbindung korrespondierend konisch/kegelstumpfförmig ausgebildet sind und miteinander verbunden werden.The connection makes it possible to connect adjacent sections (of the gas supply system and the flushing element) in the flow direction of the gas in a simple manner. The compound also serves to create a largely gas-tight connection. This can be realized, for example, in that corresponding sections of the connection have a corresponding conical / frusto-conical shape and are connected to one another.

Optional kann ein zusätzliches Sicherungselement die benachbarten Abschnitte in der Verbindungsposition mechanisch sichern/fixieren.Optionally, an additional securing element mechanically secure / fix the adjacent sections in the connection position.

Weitere Merkmale der Erfindung ergeben sich aus den Merkmalen der Unteransprüche sowie den sonstigen Anmeldungsunterlagen.Other features of the invention will become apparent from the features of the claims and the other application documents.

Die Erfindung wird nachstehend anhand verschiedener Ausführungsbeispiele näher erläutert. Dabei zeigen - jeweils in stark schematisierter Darstellung -

Figur 1:
Einen Vertikalschnitt durch ein erfindungsgemäßes Gasspül-Element und ein zugehöriges Gasanschlusselement.
Figur 2:
Eine Darstellung wie Figur 1 für eine zweite Ausführungsform.
Figur 3:
Eine Darstellung wie Figur 1 für eine dritte Ausführungsform.
The invention will be explained in more detail below with reference to various embodiments. Show - each in a highly schematic representation -
FIG. 1:
A vertical section through an inventive gas purging element and an associated gas connection element.
FIG. 2:
An illustration like FIG. 1 for a second embodiment.
FIG. 3:
An illustration like FIG. 1 for a third embodiment.

In den Figuren sind gleiche oder gleichwirkende Bauteile mit gleichen Bezugsziffern dargestellt.In the figures, the same or equivalent components are shown with the same reference numerals.

Das Bezugszeichen 10 beschreibt einen kegelstumpfförmigen Gasspülstein, von dem nur das untere Ende dargestellt ist. Von einem flachen Boden 12 verläuft ein Metallzylinder 14 mit Innengewinde 16 in einen gasdichten keramischen Außenteil 18 des Gasspülsteins 10.The reference numeral 10 describes a frusto-conical gas purging plug, of which only the lower end is shown. From a flat bottom 12, a metal cylinder 14 with internal thread 16 extends into a gas-tight ceramic outer part 18 of the gas purging plug 10.

Das Innengewinde 16 begrenzt also einen zylinderförmigen Hohlraum (Vertiefung 20), in den ein zugehöriges Gasanschlusselement 50 (eine Gasleitung) eingesetzt werden kann. Dazu ist die Gasleitung 50 an ihrem in Figur 1 dargestellten oberen, zweiten Ende 52 mit einem korrespondierenden Außengewinde 54 ausgebildet.The internal thread 16 thus delimits a cylindrical cavity (recess 20) into which an associated gas connection element 50 (a gas line) can be inserted. For this purpose, the gas line 50 is at its in FIG. 1 illustrated upper, second end 52 formed with a corresponding external thread 54.

Auf der oberen, ringförmigen Stirnfläche 14s des Zylinders 14 ist eine ringförmige Metallplatte 22 befestigt (aufgeschweißt), die korrespondierend zum Hohlraum 20 eine mittlere Öffnung 24 aufweist und von der randseitig eine zylinderförmige Wand 26 in Richtung auf ein oberes, nicht dargestelltes Ende des Gasspül-Elementes absteht, so dass sich für die Teile 22, 26 eine topfartige Geometrie mit einem Loch im Boden ergibt.On the upper, annular end face 14s of the cylinder 14, an annular metal plate 22 is fixed (welded), which has a central opening 24 corresponding to the cavity 20 and from the edge of a cylindrical wall 26 toward an upper, not shown end of Gasspül Element protrudes, so that results for the parts 22, 26 a pot-like geometry with a hole in the ground.

Dieser "Topf" dient zur Aufnahme eines unteren Endes 28 eines gasdurchlässigen keramischen Teils 30. Dieses Teil 30 ist bodenseitig mit einem mittleren Rücksprung 32 ausgebildet, liegt also nur randseitig auf dem Blech 22 auf und grenzt umfangsseitig im unteren Abschnitt gegen die Wand 26 und in dem Abschnitt darüber an den gasundurchlässigen Teil 18 des Gasspül-Elementes 10.This "pot" serves to receive a lower end 28 of a gas-permeable ceramic part 30. This part 30 is on the bottom side formed with a central recess 32, so is only marginally on the sheet 22 and peripherally adjacent in the lower portion against the wall 26 and in the section above the gas-impermeable part 18 of the gas purging element 10th

Durch den Rücksprung 32 wird eine Gasverteilkammer zwischen dem gasdurchlässigen Teil 30 und dem Blech 22 ausgebildet.By the recess 32, a gas distribution chamber between the gas-permeable part 30 and the sheet 22 is formed.

Ein Gasanschluss wird dadurch geschaffen, indem das Gasanschluss-Element 50 an eine Gasquelle angeschlossen und mit seinem Gewinde 54 auf das Gewinde 16 des Gasspül-Elementes 10 eingeschraubt wird.A gas connection is created by the gas connection element 50 is connected to a gas source and screwed with its thread 54 on the thread 16 of the gas purging element 10.

Danach kann unmittelbar der Gasspülvorgang beginnen. Gas strömt dann durch das Gasanschluss-Element 50 (Pfeilrichtung G) und damit durch den Hohlraum 20 in die Gasverteilkammer (die durch den Rücksprung 32 gebildet wird) und weiter durch die offene Porosität des gasdurchlässigen Abschnitts 30 (Pfeil G) bis das Gas das Gasspül-Element 10 über dessen (nicht dargestellte) obere Stirnfläche verlässt und in eine korrespondierende Metallschmelze gelangt.Thereafter, the gas purging process can begin immediately. Gas then flows through the gas connection element 50 (arrow G direction) and thus through the cavity 20 into the gas distribution chamber (formed by the return 32) and further through the open porosity of the gas permeable section 30 (arrow G) until the gas flushes the gas Leaves element 10 via its (not shown) upper end face and enters a corresponding molten metal.

Der dargestellte Gasspülstein hat einen flachen Boden 12. Nach außen (in der dargestellten Funktionsposition: nach unten) stehen beim Transport und beim Einbau des Gasspül-Elementes 10 keine Teile vor. Dies stellt ein wesentliches Merkmal des Gasspül-Elementes dar und erleichtert die Montage/Anschluss einer Gasleitung (eines Gasanschluss-Elementes) nach dem Einbau des Gasspül-Elementes in einen Boden oder eine Wand eines metallurgischen Schmelzgefäßes.The illustrated gas purging plug has a flat bottom 12. Outwardly (in the illustrated functional position: downwards), there are no parts during transport and installation of the gas purging element 10. This is an essential feature of the gas purging element and facilitates the assembly / connection of a gas line (a gas connection element) after installation of the gas purging element in a bottom or wall of a metallurgical melting vessel.

Die Ausführungsbeispiele nach den Figuren 2 und 3 unterscheiden sich im Wesentlichen nur durch die Verbindungstechnik von Gasspül-Element 10 und Gasanschluss-Element 50.The embodiments of the Figures 2 and 3 differ essentially only by the connection technology of gas purging element 10 and gas connection element 50.

Bei der Variante nach Figur 2 ist diese Verbindung als sogenannte Schnellkupplung gestaltet. Dazu ist ein "männlicher Teil" 16' im Hohlraum 20 angeordnet. Der Teil 16' ist am Boden 22 befestigt und ragt nach unten in den Hohlraum 20 hinein und zwar etwa bis zum Boden 12 des Gasspül-Elementes 10. Der Teil 16' hat etwa eine Zylinderform mit einem verjüngten ringförmigen Abschnitt 17.In the variant after FIG. 2 this connection is designed as a so-called quick coupling. For this purpose, a "male part" 16 'in the cavity 20 is arranged. The part 16 'is fixed to the bottom 22 and protrudes down into the cavity 20 and approximately to the bottom 12 of the gas purging element 10. The part 16' has approximately a cylindrical shape with a tapered annular portion 17th

Korrespondierend dazu ist an Stelle des Außengewindes 54 ein "weiblicher Teil" 54' der Schnellkupplung ausgebildet, wobei dieser Teil 54' topfartig ist und eine ringförmige Einschnürung 55 aufweist, die korrespondierend zu dem verjüngten Abschnitt 17 des Teils 16' gestaltet ist, so dass beim Aufschieben des Teils 54' auf den Teil 16' die ringförmige Einschnürung 55 in den verjüngten Abschnitt 17 einfedern kann, wozu der Teil 54' mit einer gewissen Elastizität ausgebildet ist.Correspondingly, a "female part" 54 'of the quick coupling is formed instead of the external thread 54, this part 54' is pot-shaped and has an annular constriction 55, which is designed corresponding to the tapered portion 17 of the part 16 ', so that at Sliding the part 54 'on the part 16', the annular constriction 55 can spring into the tapered portion 17, to which the part 54 'is formed with a certain elasticity.

Da eine Schnellkupplung als solche, für andere Anwendungszwecke, Stand der Technik ist wird sie hier nicht näher dargestellt.Since a quick coupling as such, for other applications, prior art, it will not be shown here.

Selbstverständlich ist, dass die Dimensionierung des Hohlraums 20 ausreichend groß sein muss, um den Teil 54 aufzunehmen und vorzugsweise so groß ist, dass der Teil 54' mit seiner zylindrischen Außenfläche fluchtend an der zylindrischen Außenwand des Hohlraums 20 im Montagezustand anliegt.It is understood that the dimensioning of the cavity 20 must be sufficiently large to accommodate the part 54 and preferably so large that the part 54 'rests with its cylindrical outer surface in alignment with the cylindrical outer wall of the cavity 20 in the assembled state.

Zu erwähnen ist noch, dass beim Ausführungsbeispiel nach Figur 2 der Boden des Gasspül-Elementes ein Blechboden ist.To mention is still that in the embodiment according to FIG. 2 the bottom of the gas flushing element is a sheet metal floor.

Das Ausführungsbeispiel nach Figur 3 ähnelt dem Ausführungsbeispiel nach Figur 2. Das Gasspül-Element 10 und das Gasanschluss-Element 50 werden jedoch nicht über eine Schnellkupplung miteinander verbunden, sondern über eine Art Bajonettverschluss.The embodiment according to FIG. 3 similar to the embodiment according to FIG. 2 , However, the gas purging element 10 and the gas connection element 50 are not connected to one another via a quick coupling, but via a kind of bayonet closure.

Dazu weist der Teil 16" eine L-förmige Vertiefung in seiner Umfangswand auf, die dazu dient, einen Stift 55' aufzunehmen, der senkrecht (englisch: perpendicular) von der Innenwand des Teils 54" absteht.For this purpose, the part 16 "has an L-shaped recess in its peripheral wall, which serves to receive a pin 55 ', which projects perpendicularly from the inner wall of the part 54".

Zum Verbinden von Gasspül-Element 10 und Gasanschluss-Element 50 wird das zweite Ende des Gasanschluss-Elementes 50 axial auf den Teil 16" aufgeschoben, wobei der Stift 55' zunächst entlang des axial verlaufenden Abschnitts der L-förmigen Vertiefung verläuft. Anschließend wird das Gasanschluss-Element 50 relativ zum Teil 16" gedreht, so dass der Stift 55' in den horizontalen Abschnitt der L-förmigen Nut gelangt und gegen axiales Lösen gesichert wird.To connect the gas purging element 10 and the gas connection element 50, the second end of the gas connection element 50 is pushed axially onto the part 16 ", the pin 55 'first extending along the axially extending section of the L-shaped recess Gas connection element 50 relative to the part 16 "rotated so that the pin 55 'enters the horizontal portion of the L-shaped groove and is secured against axial loosening.

Das Gasspül-Element 10 nach Figur 3 weist außerdem einen umfangsseitigen Blechmantel 40 auf, der gasdicht mit einem Bodenblech 12 verbunden ist, welches lediglich im Bereich des Zylinders 14 unterbrochen ist.The gas purging element 10 after FIG. 3 also has a peripheral metal jacket 40 which is connected in a gastight manner to a bottom plate 12, which is interrupted only in the region of the cylinder 14.

Claims (13)

  1. Gas purging element (10) for metallurgic applications with the following characteristics when installed:
    a) a refractory ceramic body (10, 30) with a lower end and an upper end,
    b) the upper end features an upper face,
    c) the lower end features a lower face (12)
    d) a recess (20) extends from the lower face (12) into the lower end of the refractory ceramic body (10)
    e) the recess (20) features a first segment (16, 16', 16") of a detachable, form fitted connection with a gas connection element (50), wherein this form fitted connection is designed as a gastight and detachable connection,
    f) a fluidic connection for a treatment gas exists between the recess (20) and the upper face through at least one gas-permeable part (30) of the refractory ceramic body (10, 30).
  2. Gas purging element according to claim 1, wherein the recess (20) is constructed as a segment (16, 16', 16") of a connection from the group: threaded connection, bayonet joint, push-/push-quick connection, push-/twist-quick connection.
  3. Gas purging element according to claim 1, wherein the recess (20), originating from the lower face (12), features one of the following geometric shapes: cylinder, cone, truncated cone, prism.
  4. Gas purging element according to claim 1, wherein a gas distribution chamber (32) is arranged in the refractory ceramic body (30), in the recess (20) or fluidically subsequent to the recess (20), in the direction of the upper face.
  5. Gas purging element according to claim 1, wherein a break-through protection device against intruding metal melt is arranged in the ceramic body, in the recess (20) or fluidically subsequent to the recess (20), in the direction of the upper face.
  6. Gas purging element according to claim 1, wherein the segment (14, 16, 16', 16") of the recess (20) is formed in situ in the refractory ceramic body (10, 30).
  7. Gas purging element according to claim 1, wherein the segment (14, 16, 16', 16") of the recess (20) is a discrete element.
  8. Gas purging element according to claim 1, wherein at least one gas-permeable part (30) of the refractory ceramic body (10, 30) extends from an inner end of the recess (20).
  9. Gas purging element according to claim 8, wherein the gas-permeable part (30) of the refractory ceramic body (10, 30), which is adjacent to the inner end of the recess (20), partially features a metal cover (22).
  10. Gas purging element according to claim 1, with an outer metal envelope (40), which peripherally covers the lower end of the refractory ceramic body (10, 30), the lower face (12) of the refractory ceramic body (10, 30), or both.
  11. Gas purging element according to claim 1, without any elements protruding beyond the lower face (12).
  12. Gas purging element according to one of the claims 1-11 with a gas connection element (50), with a first end and a second end (52), wherein the second end (52) is, correspondent to the first segment (14, 16, 16', 16") of the recess (20) of the gas purging element (10), constructed as a complementary second segment (52) of the detachable, form fitted connection with the gas purging element (10)
  13. Gas purging element according to claim 12, wherein the first end of the gas connection element is designed for the connection to a gas source.
EP14150656.8A 2014-01-09 2014-01-09 Gas flushing element and associated gas connection element Not-in-force EP2893992B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES14150656.8T ES2563192T3 (en) 2014-01-09 2014-01-09 Gas cleaning element and corresponding gas connection element
RS20160054A RS54558B1 (en) 2014-01-09 2014-01-09 Gas flushing element and associated gas connection element
PL14150656T PL2893992T3 (en) 2014-01-09 2014-01-09 Gas flushing element and associated gas connection element
EP14150656.8A EP2893992B1 (en) 2014-01-09 2014-01-09 Gas flushing element and associated gas connection element
US15/037,717 US9879916B2 (en) 2014-01-09 2014-11-11 Gas purging element and associated gas connection element
PCT/EP2014/074261 WO2015104079A1 (en) 2014-01-09 2014-11-11 Gas purging element and associated gas connection element
MX2016005652A MX2016005652A (en) 2014-01-09 2014-11-11 Gas purging element and associated gas connection element.
CN201480059884.6A CN105658354A (en) 2014-01-09 2014-11-11 Gas purging element and associated gas connection element
HRP20160147TT HRP20160147T1 (en) 2014-01-09 2016-02-09 Gas flushing element and associated gas connection element

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EP2893992B1 true EP2893992B1 (en) 2015-12-30

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CN (1) CN105658354A (en)
ES (1) ES2563192T3 (en)
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US11408040B2 (en) 2018-01-29 2022-08-09 Refractory Intellectual Property Gmbh & Co. Kg Gas purging plug, gas purging system, method for characterization of a gas purging plug and method for purging a metal melt
LU500076B1 (en) * 2021-04-23 2022-10-24 Exus Refractories Spa Gas purging plug for a metallurgical container

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NZ206264A (en) * 1982-11-23 1986-02-21 Injectall Ltd Apparatus for introducing substance into metal melts
DE3341446C1 (en) 1983-11-17 1985-07-11 Brohltal-Deumag AG für feuerfeste Erzeugnisse, 5401 Urmitz Gas flushing stone for metallurgical vessels
CH662963A5 (en) * 1984-06-12 1987-11-13 Messer Griesheim Gmbh Method and device for purging a metal melt in a casting ladle
DE3530316A1 (en) * 1985-08-24 1987-03-12 Hattinger Metallbau Gmbh Bubble brick, in particular for melting troughs, crucibles and the like
DE3833503A1 (en) * 1988-10-01 1990-04-05 Didier Werke Ag GASSPUELSTEIN
DE3833504A1 (en) * 1988-10-01 1990-04-05 Didier Werke Ag GAS PLEASE DEVICE
DE3833502A1 (en) 1988-10-01 1990-04-05 Didier Werke Ag GASSPUELSTEIN
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DE9206486U1 (en) * 1991-07-24 1992-07-23 Beck U. Kaltheuner Feuerfeste Erzeugnisse Gmbh & Co Kg, 5970 Plettenberg, De
DE9301563U1 (en) * 1993-02-04 1993-03-25 Beck U. Kaltheuner Feuerfeste Erzeugnisse Gmbh & Co Kg, 5970 Plettenberg, De
DE4312981C2 (en) * 1993-04-21 1995-02-23 Dyko Industriekeramik Gmbh Flushing device for metallurgical vessels
DE19542446C2 (en) * 1995-11-14 1998-05-28 Doetsch Geb Richard Marie Luis Fireproof molded panels with gas routing channels
DE19755199C1 (en) * 1997-12-12 1998-11-05 Didier Werke Ag Gas introduction unit
DE19948848C1 (en) * 1999-10-08 2000-07-13 Dolomitwerke Gmbh Nozzle brick for injecting flushing gas into molten metal in a metallurgical vessel has a gas entry opening located at least partially outside the pitch circle of a biasing spring of a non-return valve within a gas supply pipe
DE19954918C2 (en) * 1999-11-16 2001-09-20 Veitsch Radex Gmbh Wien Refractory ceramic gas purging plug
DE10305232B3 (en) * 2003-02-08 2004-08-05 Refractory Intellectual Property Gmbh & Co.Kg Refractory ceramic gas purging plug

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EP2893992A1 (en) 2015-07-15
MX2016005652A (en) 2016-09-21
US20160290722A1 (en) 2016-10-06
PL2893992T3 (en) 2016-06-30
HRP20160147T1 (en) 2016-03-11
US9879916B2 (en) 2018-01-30
WO2015104079A1 (en) 2015-07-16
ES2563192T3 (en) 2016-03-11
CN105658354A (en) 2016-06-08
RS54558B1 (en) 2016-06-30

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