EP0325709B1 - Gas flushing brick - Google Patents

Gas flushing brick Download PDF

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Publication number
EP0325709B1
EP0325709B1 EP88118372A EP88118372A EP0325709B1 EP 0325709 B1 EP0325709 B1 EP 0325709B1 EP 88118372 A EP88118372 A EP 88118372A EP 88118372 A EP88118372 A EP 88118372A EP 0325709 B1 EP0325709 B1 EP 0325709B1
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EP
European Patent Office
Prior art keywords
gas
flushing brick
space
wear
brick
Prior art date
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EP88118372A
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German (de)
French (fr)
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EP0325709A2 (en
EP0325709A3 (en
Inventor
Manfred Winkelmann
Hans Rothfuss
Herbert Metzger
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Didier Werke AG
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Didier Werke AG
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor

Definitions

  • the invention relates to a gas purging plug made of refractory ceramic material, on which the state of wear is visually recognizable and in which an inner body is inserted into an outer body.
  • Such a gas purging plug is described in DE-PS 31 42 989.
  • the two bodies have different gas permeability there.
  • the brightness pattern of the hot gas purging plug is recorded to determine wear.
  • the evaluation of the different light emissions is complex.
  • the choice of materials is limited by the requirement for certain emissivities.
  • the object of the invention is to propose a gas purging plug of the type mentioned in the introduction, in which the recognizability of the state of wear is improved and is largely independent of the material of the gas purging plug.
  • the above object is achieved in the case of a gas purging plug of the type mentioned at the outset in that a gas purging plug is located in the gas purging plug gas-permeable spacing space extends that the spacing space has different geometric shapes in the direction of wear, so that when the gas flows through the spacing space on the surface of the gas purging plug, different geometrical patterns are visible in accordance with the respective state of wear, and that the spacing space between the outer body made of purging stone material and the inner body extends from sink material as a gap.
  • the gap preferably has the same width throughout and / or the spacing space is filled with a gas-permeable material.
  • the aforementioned object can also be achieved in that a gas-permeable spacing space extends in the gas purging plug, that the spacing space has different geometrical shapes in the direction of wear, so that when the gas flows through the spacing space on the surface of the gas purging plug, different geometrical patterns correspond to the respective state of wear are visible, and that the space extends between the outer body, which is formed by a sheet metal casing of the sink, and an upper part of the sink and between this and a lower part of a sink, an insert with permeable material being inserted in the middle of the sink part, which also extends between the opposite levels of the top part of the sink and the bottom part of the sink and there completely fills the space between the top part of the sink and the bottom part of the sink.
  • the spacing space has a different cross-sectional shape in parallel sectional planes of the gas flushing plug. If gas, for example natural gas, is passed through the space, then the shape of the space there becomes visible on the surface of the gas purging plug. Knowing the position of the respective shape, wear can be concluded. Just looking at the shape of the gas outlet shows the respective wear.
  • the shapes can easily be designed so differently that they can be distinguished without any doubt. The recognizability of the state of wear does not require any special material selection for the gas purging plug, so that the invention can be used in a wide variety of gas purging plug assemblies.
  • the space can be designed so that the same gas flow rate flows through it in every state of wear.
  • the gas purging plug according to FIG. 1 has an outer body 1 with a conical outer surface 2. A space is formed inside the body 1. This points sections of different shapes at different heights.
  • the top section 4 is circular cylindrical.
  • the section 5 adjoining this is square-conical.
  • the bottom section 6 is circular cylindrical. There is a transition section 7 between section 6 and section 5.
  • the space is filled with a gas-permeable material.
  • a circular flame pattern is formed on the surface 8. This occurs in the gas passage as long as the wear has not progressed beyond section 4. If the wear has progressed to the area of section 5, a square flame pattern is created. This is an indication of largely advanced wear. In the event of further wear, reaching into the lower section 6, a circular flame pattern occurs again, the diameter of which, however, is considerably larger than the diameter of the section 4.
  • an inner body 9 is inserted into the outer body 1. Between the inner body 9 and the outer body 1, the space 3 is in the form of a gas-permeable joint. The distance between the outer body 1 and the inner body 9 is the same in all areas.
  • the inner body 9 is frustoconical in its upper section 4. Its lower section 6 is cuboid. A corresponding transition section 7 lies between these sections 4, 6.
  • the spacing space 3 or the outer body 1 has a corresponding shape as a hollow shape.
  • FIG. 4b With wear progressing up to the height b, a flame pattern corresponding to FIG. 4b appears in a square basic shape with rounded corners. In the case of wear that has progressed up to the height c, a square-sided flame pattern with pointed corners occurs (cf. FIG. 4c).
  • a sheet metal jacket 10 forms the outer body 1.
  • An upper part 11 and a purging plug sits in the sheet metal jacket 10 as the inner body Lower part of the sink 12.
  • a gas-permeable spacer 3 provided in the gas sink has different geometrical shapes in the direction of wear, so that when the spacer 3 flows through gas, different geometrical patterns are visible on the surface of the gas sink depending on the state of wear.
  • the space 3 extends between the sheet metal jacket 10 and the top part 11 and between this and the bottom part 12, in which an insert made of highly permeable material, for example with a permeability greater than 50 nPerm (50 x 10 ⁇ 13m2), is inserted in the middle.
  • the insert also extends between the opposite levels of the top part 11 and the bottom part 12 and there completely fills the space 3 between the two parts 11 and 12. The latter are tight or weakly permeable compared to the insert made of highly permeable material.
  • the sheet metal jacket 10 is shrunk onto the sink base 12 or tightly connected to it by means of a cement joint 14.
  • FIG. 6 The embodiment of Figure 6 is similar to that of Figure 5.
  • an insert 16 with capillaries is inserted in the middle of the sink base 12 instead of a permeable material insert.
  • Gas channels 17 which run radially outward are provided in a star shape between the lower part 12 of the sink and the upper part 11 of the sink. Accordingly, a dark star is visible when worn up to height b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (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)
  • Gas Burners (AREA)
  • Glass Compositions (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Ceramic Products (AREA)
  • Gas Separation By Absorption (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Detergent Compositions (AREA)
  • Colloid Chemistry (AREA)

Abstract

In a gas-bubble brick of refractory ceramic material, the visual detectability of a worn state is improved. The detectability should be independent of the material of the gas-bubble brick. For this purpose, a gas-permeable distance space 3, which has a different geometrical shape in the direction of wear, extends in the gas-bubble brick. As a result, a different pattern corresponding to the state of wear is visible on the surface of the gas-bubble brick when gas flows through the distance space 3. <IMAGE>

Description

Die Erfindung betrifft einen Gasspülstein aus feuerfestem keramischem Material, an dem der Verschleißzustand optisch erkennbar ist und bei dem in einen äußeren Körper ein innerer Körper eingesetzt ist.The invention relates to a gas purging plug made of refractory ceramic material, on which the state of wear is visually recognizable and in which an inner body is inserted into an outer body.

Ein derartiger Gasspülstein ist in der DE-PS 31 42 989 beschrieben. Die beiden Körper weisen dort unterschiedliche Gasdurchlässigkeit auf. Zur Feststellung des Verschleißes wird das Helligkeitsmuster des heißen Gasspülsteins erfaßt. Die Auswertung der unterschiedlichen Lichtemission ist aufwendig. Außerdem ist die Auswahlmöglichkeit der Materialien durch die Forderung nach bestimmten Emissionsvermögen beschränkt.Such a gas purging plug is described in DE-PS 31 42 989. The two bodies have different gas permeability there. The brightness pattern of the hot gas purging plug is recorded to determine wear. The evaluation of the different light emissions is complex. In addition, the choice of materials is limited by the requirement for certain emissivities.

Aus der GB-A-2 115 539 sind ferner kegel- oder rechteckförmige Gasspülsteine bekannt, die sich aus mehreren von einem Blechmantel umfaßten Steinteilen zusammensetzen. Zwischen diesen sind in Richtung der Gasspülströmung verlaufende Spaltfugen vorgesehen, welche mit keramischem gasdurchlässigem Fasermaterial gefüllt sind. Der sich daraus ergebende Gasaustrittsquerschnitt hat die gleiche Querschnittsgestalt in parallelen Schnittebenen.From GB-A-2 115 539 conical or rectangular gas purging stones are also known, which are composed of several stone parts surrounded by a sheet metal jacket. Between these, gap gaps running in the direction of the gas purging flow are provided, which are filled with ceramic gas-permeable fiber material. The resulting gas outlet cross-section has the same cross-sectional shape in parallel sectional planes.

Aufgabe der Erfindung ist es, einen Gasspülstein der eingangs genannten Art vorzuschlagen, bei dem die Erkennbarkeit des Verschleißzustandes verbessert und weitgehend unabhängig vom Material des Gasspülsteins ist.The object of the invention is to propose a gas purging plug of the type mentioned in the introduction, in which the recognizability of the state of wear is improved and is largely independent of the material of the gas purging plug.

Erfindungsgemäß ist obige Aufgabe bei einem Gasspülstein der eingangs genannten Art dadurch gelöst, daß sich in dem Gasspülstein ein gasdurchlässiger Abstandsraum erstreckt, daß der Abstandsraum in Verschleißrichtung unterschiedliche geometrische Form aufweist, so daß bei Gasdurchströmung des Abstandsraums an der Oberfläche des Gasspülsteins entsprechend dem jeweiligen Verschleißzustand unterschiedliche geometrische Muster sichtbar sind, und daß sich der Abstandsraum zwischen dem äußeren Körper aus Spülsteinmaterial und dem inneren Körper aus Spülsteinmaterial als Spalt erstreckt.According to the invention, the above object is achieved in the case of a gas purging plug of the type mentioned at the outset in that a gas purging plug is located in the gas purging plug gas-permeable spacing space extends that the spacing space has different geometric shapes in the direction of wear, so that when the gas flows through the spacing space on the surface of the gas purging plug, different geometrical patterns are visible in accordance with the respective state of wear, and that the spacing space between the outer body made of purging stone material and the inner body extends from sink material as a gap.

Vorzugsweise weist der Spalt durchgehend die gleiche Breite auf und/oder ist der Abstandsraum mit einem gasdurchlässigen Material gefüllt.The gap preferably has the same width throughout and / or the spacing space is filled with a gas-permeable material.

Gemäß der Erfindung kann die vorgenannte Aufgabe auch dadurch gelöst werden, daß sich in dem Gasspülstein ein gasdurchlässiger Abstandsraum erstreckt, daß der Abstandsraum in Verschleißrichtung unterschiedliche geometrische Form aufweist, so daß bei Gasdurchströmung des Abstandsraums an der Oberfläche des Gasspülsteins entsprechend dem jeweiligen Verschleißzustand unterschiedliche geometrische Muster sichtbar sind, und daß der Abstandsraum sich zwischen dem äußeren Körper, der durch einen Blechmantel des Spülsteins gebildet ist, und einem Spülsteinoberteil sowie zwischen diesem und einem Spülsteinunterteil erstreckt, wobei in das Spülsteinunterteil ein Einsatz mit permeablem Material mittig eingesetzt ist, der sich auch zwischen den sich gegenüberliegenden Ebenen des Spülsteinoberteils und des Spülsteinunterteils erstreckt und dort den Abstandsraum zwischen dem Spülsteinoberteil und dem Spülsteinunterteil vollständig füllt.According to the invention, the aforementioned object can also be achieved in that a gas-permeable spacing space extends in the gas purging plug, that the spacing space has different geometrical shapes in the direction of wear, so that when the gas flows through the spacing space on the surface of the gas purging plug, different geometrical patterns correspond to the respective state of wear are visible, and that the space extends between the outer body, which is formed by a sheet metal casing of the sink, and an upper part of the sink and between this and a lower part of a sink, an insert with permeable material being inserted in the middle of the sink part, which also extends between the opposite levels of the top part of the sink and the bottom part of the sink and there completely fills the space between the top part of the sink and the bottom part of the sink.

Es ist auch gemäß der Erfindung möglich, in das Spülsteinunterteil anstelle des permeablen Materialeinsatzes einen Einsatz mit Kapillaren mittig einzusetzen und zwischen dem Spülsteinunterteil und dem Spülsteinoberteil sternförmig radial nach außen verlaufende Gaskanäle vorzusehen.It is also possible according to the invention to use an insert with capillaries in the middle of the sink base instead of the permeable material insert and to provide gas channels running radially outward between the lower part of the sink and the upper part of the sink.

Der Abstandsraum weist bei allen erfindungsgemäßen Lösungen in parallelen Schnittebenen des Gasspülsteins eine unterschiedliche Querschnittsgestalt auf. Wird durch den Abstandsraum Gas, beispielsweise Erdgas, geleitet, dann wird an der Oberfläche des Gasspülsteins die Form sichtbar, die der Abstandsraum dort aufweist. In Kenntnis der Lage der jeweiligen Form kann damit auf den Verschleiß geschlossen werden. Allein die Betrachtung der Form des Gasaustritts zeigt somit den jeweiligen Verschleiß. Die Formen lassen sich leicht so unterschiedlich gestalten, daß sie zweifelsfrei unterscheidbar sind. Die Erkennbarkeit des Verschleißzustandes setzt dabei keine besondere Materialauswahl für den Gasspülstein voraus, so daß die Erfindung bei unterschiedlichsten Gasspülsteinaufbauten einsetzbar ist.In all of the solutions according to the invention, the spacing space has a different cross-sectional shape in parallel sectional planes of the gas flushing plug. If gas, for example natural gas, is passed through the space, then the shape of the space there becomes visible on the surface of the gas purging plug. Knowing the position of the respective shape, wear can be concluded. Just looking at the shape of the gas outlet shows the respective wear. The shapes can easily be designed so differently that they can be distinguished without any doubt. The recognizability of the state of wear does not require any special material selection for the gas purging plug, so that the invention can be used in a wide variety of gas purging plug assemblies.

Günstig ist auch, daß der Verschleißzustand nicht erst dann erkennbar ist, wenn schon ein weitgehender Verschleiß des Gasspülsteins erfolgt ist. Der Verschleißzustand ist auch dann erkennbar, wenn der Gasspülstein ohne weiteres weiterverwendet werden kann.It is also favorable that the state of wear is not recognizable only when the gas purging plug has already been largely worn out. The state of wear can also be seen when the gas purging plug can be used without further ado.

Günstig ist auch, daß der Abstandsraum so ausgelegt werden kann, daß er bei jedem Verschleißzustand von der gleichen Gasdurchflußmenge durchströmt ist.It is also favorable that the space can be designed so that the same gas flow rate flows through it in every state of wear.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung von Ausführungsbeispielen.Advantageous refinements of the invention result from the subclaims and the following description of exemplary embodiments.

In der Zeichnung zeigen:

Figur 1
einen äußeren Körper eines Gasspülsteins im Schnitt,
Figur 2
eine Ansicht längs der Linie II-II nach Figur 1,
Figur 3
einen Gasspülstein perspektivisch,
Figur 4
die beim Gasspülstein nach Figur 3 im Zuge des Verschleißes kenntlich werdenden Muster in Aufsicht,
Figur 5
ein drittes Ausführungsbeispiel eines Gasspülsteins, und
Figur 6
ein viertes Ausführungsbeispiel eines Gasspülstein.
The drawing shows:
Figure 1
an outer body of a gas purging plug in section,
Figure 2
2 shows a view along line II-II according to FIG. 1,
Figure 3
a gas purging plug in perspective,
Figure 4
the patterns which become recognizable in the course of wear in the gas purging plug according to FIG. 3, in supervision,
Figure 5
a third embodiment of a gas purging plug, and
Figure 6
a fourth embodiment of a gas purging plug.

Der Gasspülstein nach Figur 1 weist einen äußeren Körper 1 mit einer kegelförmigen Mantelfläche 2 auf. Im Inneren des Körpers 1 ist ein Abstandsraum ausgebildet. Dieser weist in unterschiedlichen Höhen Abschnitte unterschiedlicher Form auf. Der oberste Abschnitt 4 ist kreiszylindrisch. Der an diesen anschließende Abschnitt 5 ist quadratisch konisch. Der unterste Abschnitt 6 ist kreiszylindrisch. Zwischen dem Abschnitt 6 und dem Abschnitt 5 befindet sich ein Übergangsabschnitt 7.The gas purging plug according to FIG. 1 has an outer body 1 with a conical outer surface 2. A space is formed inside the body 1. This points sections of different shapes at different heights. The top section 4 is circular cylindrical. The section 5 adjoining this is square-conical. The bottom section 6 is circular cylindrical. There is a transition section 7 between section 6 and section 5.

Der Abstandsraum ist mit einem gasdurchlässigen Material gefüllt.The space is filled with a gas-permeable material.

Wird Erdgas durch den Abstandsraum geleitet, dann entsteht an der Oberfläche 8 ein kreisförmiges Flammbild. Dieses tritt bei der Gasdurchleitung solange auf, wie der Verschleiß noch nicht über den Abschnitt 4 fortgeschritten ist. Ist der Verschleiß bis im Bereich des Abschnittes 5 fortgeschritten, dann entsteht ein quadratisches Flammbild. Dies ist ein Hinweis auf einen weitgehend fortgeschrittenen Verschleiß. Bei noch weitergehendem, bis in den unteren Abschnitt 6 reichenden Verschleiß tritt wieder ein kreisförmiges Flammbild auf, dessen Durchmesser jedoch wesentlich größer ist als der Durchmesser des Abschnittes 4.If natural gas is passed through the space, then a circular flame pattern is formed on the surface 8. This occurs in the gas passage as long as the wear has not progressed beyond section 4. If the wear has progressed to the area of section 5, a square flame pattern is created. This is an indication of largely advanced wear. In the event of further wear, reaching into the lower section 6, a circular flame pattern occurs again, the diameter of which, however, is considerably larger than the diameter of the section 4.

Es ist auch möglich, in den Innenraum des äußeren Körpers 1 einen inneren Körper einzusetzen. Der Abstandraum ist dann von einem Spalt oder einer Fuge zwischen dem äußeren Körper 1 und dem inneren Körper gebildet. Es ergibt sich dabei ein entsprechend ringförmiges Flammbild beim Durchleiten des Gases.It is also possible to insert an inner body into the interior of the outer body 1. The spacing space is then formed by a gap or a joint between the outer body 1 and the inner body. A corresponding ring-shaped flame pattern results when the gas is passed through.

Beim Ausführungsbeispiel nach Figur 3 ist in den äußeren Körper 1 ein innerer Körper 9 eingesetzt. Zwischen dem inneren Körper 9 und dem äußeren Körper 1 besteht der Abstandsraum 3 in Form einer gasdurchlässigen Fuge. Der Abstand zwischen dem äußeren Körper 1 und dem inneren Körper 9 ist an allen Bereichen gleich groß.In the exemplary embodiment according to FIG. 3, an inner body 9 is inserted into the outer body 1. Between the inner body 9 and the outer body 1, the space 3 is in the form of a gas-permeable joint. The distance between the outer body 1 and the inner body 9 is the same in all areas.

Der innere Körper 9 ist in seinem oberen Abschnitt 4 kegelstumpfförmig gestaltet. Sein unterer Abschnitt 6 ist quaderförmig gestaltet. Zwischen diesen Abschnitten 4, 6 liegt ein entsprechender Übergangsabschnitt 7. Eine entsprechende Gestalt weist der Abstandsraum 3 bzw. der äußere Körper 1 als Hohlform auf.The inner body 9 is frustoconical in its upper section 4. Its lower section 6 is cuboid. A corresponding transition section 7 lies between these sections 4, 6. The spacing space 3 or the outer body 1 has a corresponding shape as a hollow shape.

Bei Gasdurchströmung und noch nicht verschlissenen Körpern 1,9 tritt an der Oberfläche 8 ein Gasschleier aus und damit ein Flammbild auf, das in Aufsicht kreisringförmig erscheint (vgl. Figur 4a).When the gas flows through and the bodies 1, 9 are not yet worn, a gas curtain emerges on the surface 8, and thus a flame pattern appears which, when viewed from above, appears as a ring (see FIG. 4a).

Bei bis in die Höhe b fortgeschrittenem Verschleiß tritt ein Flammbild entsprechend Figur 4b in quadratischer Grundform mit abgerundeten Ecken auf. Bei bis in die Höhe c fortgeschrittenem Verschleiß tritt ein in Aufsicht quadratisches Flammbild mit spitzen Ecken auf (vgl. Figur 4c).With wear progressing up to the height b, a flame pattern corresponding to FIG. 4b appears in a square basic shape with rounded corners. In the case of wear that has progressed up to the height c, a square-sided flame pattern with pointed corners occurs (cf. FIG. 4c).

Beim Gasspülstein nach Figur 5 bildet ein Blechmantel 10 den äußeren Körper 1. In dem Blechmantel 10 sitzt als innerer Körper ein Spülsteinoberteil 11 und ein Spülsteinunterteil 12. Ein im Gasspülstein vorgesehener, gasdurchlässiger Abstandsraum 3 weist in Verschleißrichtung unterschiedliche geometrische Formen auf, so daß bei Gasdurchströmung des Abstandsraumes 3 an der Oberfläche des Gaspülsteins entsprechend dem jeweiligen Verschleißzustand unterschiedliche geometrische Muster sichtbar sind. Der Abstandsraum 3 erstreckt sich zwischen dem Blechmantel 10 und dem Spülsteinoberteil 11 sowie zwischen diesem und dem Spülsteinunterteil 12, in welches ein Einsatz aus hochpermeablem Material, beispielsweise mit einer Permeabilität größer als 50 nPerm (50 x 10⁻¹³m²), mittig eingesetzt ist. Der Einsatz erstreckt sich auch zwischen den sich gegenüberliegenden Ebenen des Spülsteinoberteils 11 und des Spülsteinunterteils 12 und füllt dort vollständig den Abstandsraum 3 zwischen beiden Spülsteinteilen 11 und 12. Letztere sind gegenüber dem Einsatz aus hochpermeablem Material dicht bzw. schwach permeabel.In the gas purging plug according to FIG. 5, a sheet metal jacket 10 forms the outer body 1. An upper part 11 and a purging plug sits in the sheet metal jacket 10 as the inner body Lower part of the sink 12. A gas-permeable spacer 3 provided in the gas sink has different geometrical shapes in the direction of wear, so that when the spacer 3 flows through gas, different geometrical patterns are visible on the surface of the gas sink depending on the state of wear. The space 3 extends between the sheet metal jacket 10 and the top part 11 and between this and the bottom part 12, in which an insert made of highly permeable material, for example with a permeability greater than 50 nPerm (50 x 10⁻¹³m²), is inserted in the middle. The insert also extends between the opposite levels of the top part 11 and the bottom part 12 and there completely fills the space 3 between the two parts 11 and 12. The latter are tight or weakly permeable compared to the insert made of highly permeable material.

Der Blechmantel 10 ist auf das Spülsteinunterteil 12 aufgeschrumpft oder mittels einer Kittfuge 14 mit diesem dicht verbunden.The sheet metal jacket 10 is shrunk onto the sink base 12 or tightly connected to it by means of a cement joint 14.

Wird durch einen Gasanschluß 15 Spülgas durch den heißen Gasspülstein geleitet, dann wird durch die Kühlwirkung des Spülgases im Bereich der Spülfuge 13 ein gegenüber der hellroten Oberfläche 8 des Spülsteinoberteils 11 dunkler Kreisring sichtbar. Ist das Spülsteinoberteil 11 bis in die Höhe b verschlissen, dann wird ein dunkler, kreisförmiger Fleck sichtbar. Dies ist ein Zeichen dafür, daß der Gasspülstein erneuert werden muß.If purging gas is passed through the hot gas purging plug 15 through a gas connection 15, a circular ring which is darker than the light red surface 8 of the purging plug upper part 11 becomes visible due to the cooling effect of the purging gas in the area of the purging joint 13. If the top part 11 of the sink is worn down to the height b, then a dark, circular stain becomes visible. This is a sign that the gas purging plug must be replaced.

Das Ausführungsbeispiel nach Figur 6 ist dem der Figur 5 ähnlich. Hier ist in das Spülsteinunterteil 12 anstelle eines permeablen Materialeinsatzes ein Einsatz 16 mit Kapillaren mittig eingesetzt. Zwischen dem Spülsteinunterteil 12 und dem Spülsteinoberteil 11 sind sternförmig radial nach außen verlaufende Gaskanäle 17 vorgesehen. Dementsprechend wird bei Verschleiß bis in die Höhe b ein dunkler Stern sichtbar.The embodiment of Figure 6 is similar to that of Figure 5. Here, an insert 16 with capillaries is inserted in the middle of the sink base 12 instead of a permeable material insert. Gas channels 17 which run radially outward are provided in a star shape between the lower part 12 of the sink and the upper part 11 of the sink. Accordingly, a dark star is visible when worn up to height b.

Claims (5)

  1. Gas flushing brick of refractory ceramic material on which the state of wear is optically determinable and in which an outer body is inserted into an inner body, characterised in that a gas permeable space (3) extends within the gas flushing brick, that the space (3) has a differing geometrical shape in the direction of wear so that when gas flows through the space (3) different geometrical patterns are visible on the surface of the gas flushing brick corresponding to the current state of wear and that the space (3) extends as a gap (3) between the outer body (1) of flushing brick material and the inner body (9) of flushing brick material.
  2. Gas flushing brick as claimed in Claim 1, characterised in that the gap continuously has the same breadth.
  3. Gas flushing brick as claimed in Claims 1 and 2, characterised in that the space (3) is filled with a gas permeable material.
  4. Gas flushing brick of refractory, ceramic material on which the state of wear is optically determinable and in which an inner body is inserted into an outer body, characterised in that a gas permeable space (3) extends within the gas flushing brick, and the space (3) has a differing geometrical shape in the direction of wear so that when gas flows through the space (3) different geometrical patterns are visible at the surface of the gas flushing brick corresponding to the current state of wear and that the space (3) extends between the outer body, which is constituted by a metal shell (10) of the flushing brick, and a flushing brick upper portion (11) and between the latter and a flushing brick lower portion (12), whereby centrally inserted into the flushing brick lower portion (12) there is an insert with permeable material which also extends between the opposing plane surfaces of the flushing brick upper portion (11) and of the flushing brick lower portion (12) and completely fills the space (3) between the flushing brick upper portion (11) and the flushing brick lower portion (12).
  5. Gas flushing brick as claimed in Claim 4, characterised in that centrally inserted into the flushing brick lower portion (12) instead of a permeable material insert there is an insert (16) with capillaries and provided between the flushing brick lower portion (12) and the flushing brick upper portion (11) there are gas passages (17) extending radially outwardly in the shape of a star.
EP88118372A 1988-01-29 1988-11-04 Gas flushing brick Expired - Lifetime EP0325709B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802657 1988-01-29
DE3802657A DE3802657C1 (en) 1988-01-29 1988-01-29

Publications (3)

Publication Number Publication Date
EP0325709A2 EP0325709A2 (en) 1989-08-02
EP0325709A3 EP0325709A3 (en) 1990-01-24
EP0325709B1 true EP0325709B1 (en) 1995-08-16

Family

ID=6346246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118372A Expired - Lifetime EP0325709B1 (en) 1988-01-29 1988-11-04 Gas flushing brick

Country Status (11)

Country Link
US (1) US5202079A (en)
EP (1) EP0325709B1 (en)
JP (1) JP2597509B2 (en)
KR (1) KR960008885B1 (en)
CN (1) CN1014904B (en)
AT (1) ATE126545T1 (en)
CA (1) CA1327268C (en)
DE (2) DE3802657C1 (en)
ES (1) ES2076936T3 (en)
FI (1) FI84888C (en)
ZA (1) ZA89412B (en)

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Publication number Priority date Publication date Assignee Title
DE4014509A1 (en) * 1990-05-07 1991-11-14 Didier Werke Ag GAS PUMP
DE4039232C2 (en) * 1990-12-08 1995-01-19 Didier Werke Ag Process for producing a gas purging plug and gas purging plug
US5330160A (en) * 1993-05-11 1994-07-19 Martin & Pagenstecher, Inc. Gas stir plug wear indicator including low melting point component and method of use
US5421561A (en) * 1993-11-15 1995-06-06 Martin & Pagenstecher, Inc. Gas stir devices with refractory material erosion depth indicator and method of making the same
DE4406563A1 (en) * 1994-02-23 1995-08-24 Matthias Keuter Oxygen-blown converter blowing nozzle
DE19504941C2 (en) * 1995-02-15 1998-05-20 Knoellinger Horst Gas purging stone
US5478053A (en) * 1995-04-10 1995-12-26 North American Refractories Co. Inc. Refractory gas purging device
DE19619204C1 (en) * 1996-05-11 1997-05-22 Veitsch Radex Ag Gas flushing system
BR9900824A (en) * 1999-03-01 2000-03-14 Magnesita S A Gas injection system in containers containing molten metals or alloys.
DE19954918C2 (en) * 1999-11-16 2001-09-20 Veitsch Radex Gmbh Wien Refractory ceramic gas purging plug
JP2009046756A (en) * 2007-08-23 2009-03-05 Tokyo Yogyo Co Ltd Gas blowing plug
CN101526224B (en) * 2008-03-04 2010-11-03 苏州博能炉窑科技有限公司 Heat storage burner brick
TWI555596B (en) 2012-02-07 2016-11-01 維蘇威克魯什伯公司 Gas purging plug comprising wear indicators
KR101819913B1 (en) * 2016-09-19 2018-01-18 한국내화 주식회사 Porous plug

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Publication number Priority date Publication date Assignee Title
LU82051A1 (en) * 1980-01-02 1981-09-10 Arbed EQUIPMENT AT THE BOTTOM OF A METALLURGICAL CONTAINER FOR GAS INJECTION INTO A METAL BATH
SE8106056L (en) * 1981-05-27 1982-11-28 Aikoh Co POROS PLASTIC FOR CASTLE METAL BOILER
FR2518240A1 (en) * 1981-12-16 1983-06-17 Siderurgie Fse Inst Rech PERMEABLE REFRACTORY ELEMENT FOR THE INTRODUCTION OF A BREWING FLUID IN A FUSION METAL BATH
US4462576A (en) * 1982-02-24 1984-07-31 Didier-Werke Ag Apparatus for supplying gas through the wall of a metallurgical container
AT386072B (en) * 1983-07-18 1988-06-27 Radex Deutschland Ag FIREPROOF STONE, ESPECIALLY GAS PULSE STONE
DE3441223A1 (en) * 1984-11-10 1986-05-15 Lichtenberg Feuerfest GmbH, 5200 Siegburg Scavenging insert
DE3503221A1 (en) * 1985-01-31 1986-08-14 Didier-Werke Ag, 6200 Wiesbaden Refractory gas-permeable brick
DE3519379A1 (en) * 1985-05-30 1986-12-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Monitoring of the wear of blowing nozzles in metallurgical processes
DE3523171C1 (en) * 1985-06-28 1986-10-30 Didier-Werke Ag, 6200 Wiesbaden Gas purging device
DE3526391A1 (en) * 1985-07-24 1987-02-05 Werner Fischer Method and device for detecting the wear of refractory bricks
DE3538498A1 (en) * 1985-10-30 1987-05-07 Didier Werke Ag INJECTING DEVICE FOR METALLURGICAL VESSELS
FR2590974B1 (en) * 1985-12-03 1991-01-25 Detalle Pol DEVICE FOR DETECTING THE WEAR OF FLUID INSUFFLATION BRICKS IN LIQUID METALS
JPH0343221Y2 (en) * 1986-11-14 1991-09-10

Also Published As

Publication number Publication date
FI84888B (en) 1991-10-31
KR890012118A (en) 1989-08-24
EP0325709A2 (en) 1989-08-02
FI886027A (en) 1989-07-30
CN1036522A (en) 1989-10-25
ATE126545T1 (en) 1995-09-15
DE3854325D1 (en) 1995-09-21
FI84888C (en) 1992-02-10
CA1327268C (en) 1994-03-01
DE3802657C1 (en) 1989-09-21
US5202079A (en) 1993-04-13
JP2597509B2 (en) 1997-04-09
JPH01301813A (en) 1989-12-06
KR960008885B1 (en) 1996-07-05
CN1014904B (en) 1991-11-27
ES2076936T3 (en) 1995-11-16
EP0325709A3 (en) 1990-01-24
ZA89412B (en) 1989-10-25

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