[go: up one dir, main page]

EP0325709A2 - Gas flushing brick - Google Patents

Gas flushing brick Download PDF

Info

Publication number
EP0325709A2
EP0325709A2 EP88118372A EP88118372A EP0325709A2 EP 0325709 A2 EP0325709 A2 EP 0325709A2 EP 88118372 A EP88118372 A EP 88118372A EP 88118372 A EP88118372 A EP 88118372A EP 0325709 A2 EP0325709 A2 EP 0325709A2
Authority
EP
European Patent Office
Prior art keywords
gas
purging plug
gas purging
wear
sink
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.)
Granted
Application number
EP88118372A
Other languages
German (de)
French (fr)
Other versions
EP0325709B1 (en
EP0325709A3 (en
Inventor
Manfred Winkelmann
Hans Rothfuss
Herbert Metzger
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.)
Didier Werke AG
Original Assignee
Didier Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Didier Werke AG filed Critical Didier Werke AG
Publication of EP0325709A2 publication Critical patent/EP0325709A2/en
Publication of EP0325709A3 publication Critical patent/EP0325709A3/en
Application granted granted Critical
Publication of EP0325709B1 publication Critical patent/EP0325709B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • 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 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-permeable spacing space extends in the gas purging plug, in that the spacing space has different geometric shapes in the direction of wear, so that when the flow of gas flows through the spacing space on the surface of the gas purging plug, different spacings correspond to the respective state of wear geometric patterns are visible.
  • 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 spacing space, the shape of the spacing 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 3 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 spacing space 3 is filled with a gas-permeable material.
  • 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.
  • a flame pattern corresponding to FIG. 4b occurs in a square basic shape with rounded corners.
  • a square-sided flame pattern with pointed corners occurs (see FIG. 4c).
  • 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 into the bottom part 12 of the sink.
  • Gas channels 17 run radially outwards between the top part 11 of the sink and the bottom part 12 of the sink. Accordingly, a dark star is visible when worn up to the height b.

Landscapes

  • 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)
  • Sampling And Sample Adjustment (AREA)
  • Glass Compositions (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Colloid Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Ceramic Products (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

Bei einem Gasspülstein aus feuerfestem keramischen Material ist die optische Erkennbarkeit des Verschleißzustandes verbessert. Die Erkennbarkeit soll unabhängig vom Material des Gasspülsteins sein. Es erstreckt sich hierfür in dem Gasspülstein ein gasdurchlässiger Abstandsraum 3, welcher in Verschleißrichtung unterschiedliche geometrische Form aufweist. Dadurch ist bei Gasdurchströmung des Abstandsraumes 3 an der Oberfläche des Gasspülsteins ein entsprechend dem Verschleißzustand unterschiedliches Muster sichtbar.

Figure imgaf001
In the case of a gas purging plug made of refractory ceramic material, the visual recognition of the state of wear is improved. The recognizability should be independent of the material of the gas purging plug. For this purpose, a gas-permeable spacing space 3 extends in the gas purging plug, which has a different geometric shape in the direction of wear. As a result, when the gas flows through the space 3 on the surface of the gas purging plug, a pattern which is different in accordance with the state of wear is visible.
Figure imgaf001

Description

Die Erfindung betrifft einen Gasspülstein aus feuerfestem keramischen 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. Die Differenz des Emissionsvermögens der beiden Körper ist größer als 0,1. 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 difference in emissivity between the two bodies is greater than 0.1. 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.

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.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-permeable spacing space extends in the gas purging plug, in that the spacing space has different geometric shapes in the direction of wear, so that when the flow of gas flows through the spacing space on the surface of the gas purging plug, different spacings correspond to the respective state of wear geometric patterns are visible.

Der Abstandsraum weist 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.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 spacing space, the shape of the spacing 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 cannot be recognized 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. 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 Gasspülsteins.
Advantageous refinements of the invention result from the subclaims and the following description of exemplary embodiments. The drawing shows:
  • 1 shows an outer body of a gas purging plug in section,
  • FIG. 2 shows a view along the line II-II according to FIG. 1,
  • FIG. 3 shows a gas purging plug in perspective,
  • FIG. 4 shows the pattern which becomes apparent in the course of wear in the gas purging plug according to FIG. 3,
  • Figure 5 shows a third embodiment of a gas purging plug, and
  • Figure 6 shows 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 Innern des Körpers 1 ist ein Abstandsraum 3 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 3 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 3 ist mit einem gasdurchlässigen Material gefüllt.The spacing space 3 is filled with a gas-permeable material.

Wird Erdgas durch den Abstandsraum 3 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 3, 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 3 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 3 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 gas flows through and bodies 1, 9 that have not yet worn out, a gas curtain emerges on the surface 8, and thus a flame pattern appears which, when viewed from above, appears circular (see FIG. 4a).

Bei bis in die Höhe b fortgeschrittenen Verschleiß tritt ein Flammbild entsprechend Figur 4b in quadratischer Grundform mit abgerundeten Ecken auf. Bei bis in die Höhe c fortgeschrittenen Verschleiß tritt ein in Aufsicht quadratisches Flammbild mit spitzen Ecken auf (vgl. Figur 4c).In the case of wear that has progressed up to height b, a flame pattern corresponding to FIG. 4b occurs 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 (see FIG. 4c).

Beim Gasspülstein nach Figur 5 bildet ein Blechmantel 10 den äußeren Körper 1. In dem Blechmantel 10 sitzt als innerer Körper 9 ein Spülsteinoberteil 11 und ein Spülsteinunterteil 12. Der Abstandsraum 3 besteht zwischen dem Blechmantel 10 und dem Spülsteinoberteil 11 sowie zwischen dem Spülsteinoberteil 11 und dem Spülsteinunterteil 12. Zwischen dem Blechmantel 10 und dem Spülsteinoberteil 11 ist der Abstandsraum 3 durch Fugen 13 gebildet. Zwischen dem Spülsteinoberteil 11 und dem Spülsteinunterteil 12 ist in den Abstandsraum hochpermeables Material, beispielsweise mit einer Permeabilität größer als 50 nPm, eingesetzt. Das Spülsteinoberteil 11 und das Spülsteinunterteil 12 sind demgegenüber dicht bzw. schwach permeabel.In the gas purging plug according to FIG. 5, a sheet metal jacket 10 forms the outer body 1. The inner jacket sits in the sheet metal jacket 10 Body 9, an upper part 11 of the sink and a lower part 12 of the sink. The space 3 consists between the sheet metal jacket 10 and the upper part 11 of the sink and between the upper part 11 of the sink and the lower part 12 of the sink. Between the plate 10 and the upper part 11 of the sink, the space 3 is formed by joints 13. Highly permeable material, for example with a permeability greater than 50 nPm, is inserted between the top part 11 of the sink and the bottom part 12 of the sink. In contrast, the top part 11 and the bottom part 12 are tight or weakly permeable.

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, then 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 spot 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 ein Einsatz 16 mit Kapillaren eingesetzt. Zwischen dem Spülsteinoberteil 11 und dem Spülsteinunterteil 12 verlaufen sternförmig radial nach außen Gaskanäle 17. 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 into the bottom part 12 of the sink. Gas channels 17 run radially outwards between the top part 11 of the sink and the bottom part 12 of the sink. Accordingly, a dark star is visible when worn up to the height b.

Claims (7)

1. Gasspülstein aus feuerfestem keramischen Material, an dem der Verschleißzustand optisch erkennbar ist und bei dem in einen äußeren Körper ein innerer Körper eingesetzt ist,
dadurch gekennzeichnet,
daß sich in dem Gasspülstein ein gasdurchlässiger Abstandsraum (3) erstreckt, daß der Abstandsraum (3) in Verschleißrichtung unterschiedliche geometrische Form aufweist, so daß bei Gasdurchströmung des Abstandsraums (3) an der Oberfläche des Gasspülsteins entsprechend des jeweiligen Verschleißzustandes unterschiedliche geometrische Muster sichtbar sind.1. 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,
characterized,
that a gas-permeable spacing space (3) extends in the gas purging plug, that the spacing space (3) has different geometric shapes in the direction of wear, so that when the gas flows through the spacing space (3) on the surface of the gas purging plug, different geometrical patterns are visible depending on the state of wear. 2. Gasspülstein nach Anspruch 1,
dadurch gekennzeichnet,
daß sich der Abstandsraum (3) zwischen dem äußeren Körper (1) aus Spülsteinmaterial und dem inneren Körper (9) aus Spülsteinmaterial als Spalt erstreckt.2. gas purging plug according to claim 1,
characterized,
that the space (3) extends between the outer body (1) made of sink material and the inner body (9) made of sink material as a gap. 3. Gasspülstein nach Anspruch 2,
dadurch gekennzeichnet,
daß der Spalt durchgehend gleiche Breite aufweist.3. gas purging plug according to claim 2,
characterized,
that the gap has the same width throughout. 4. Gasspülstein nach Anspruch 1,
dadurch gekennzeichnet,
daß der Abstandsraum (3) von einem in den äußeren Körper (1) eingesetzten permeablen Körper gebildet ist.4. gas purging plug according to claim 1,
characterized,
that the spacing space (3) is formed by a permeable body inserted into the outer body (1). 5. Gasspülstein nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Abstandsraum (3) sich zwischen dem äußeren Körper, der durch einen Blechmantel (10) des Spülsteins gebildet ist, und einem Spülsteinoberteil (11) und zwischen diesem und einem Spülsteinunterteil (12) erstreckt.5. gas purging plug according to one of the preceding claims,
characterized,
that the space (3) extends between the outer body, which is formed by a sheet metal jacket (10) of the sink, and an upper part of the sink (11) and between this and a lower part (12). 6. Gasspülstein nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß bei Gasdurchströmung das geometrische Munster als Flammbild sichtbar ist.6. gas purging plug according to one of the preceding claims,
characterized,
that when the gas flows through the geometric Munster is visible as a flame image. 7. Gasspülstein nach einem der vorhergehenden Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß bei Gasdurchströmung das geometrische Munster als Dunkelzone sichtbar ist.7. gas purging plug according to one of the preceding claims 1 to 5,
characterized,
that when the gas flows through, the geometric Munster is visible as a dark zone.
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 true EP0325709A2 (en) 1989-08-02
EP0325709A3 EP0325709A3 (en) 1990-01-24
EP0325709B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490062A1 (en) * 1990-12-08 1992-06-17 Didier-Werke Ag Process of manufacturing a gas purging brick and gas purging brick
US5160478A (en) * 1990-05-07 1992-11-03 Didier-Werke Ag Gas flushing apparatus for metallurgical vessel
DE19504941A1 (en) * 1995-02-15 1996-08-22 Knoellinger Horst Gas purging stone
CN101526224B (en) * 2008-03-04 2010-11-03 苏州博能炉窑科技有限公司 Heat storage burner brick

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
WO2013117498A1 (en) 2012-02-07 2013-08-15 Vesuvius Crucible Company Ga purging plus comprising wear indicator
KR101819913B1 (en) * 2016-09-19 2018-01-18 한국내화 주식회사 Porous plug

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5160478A (en) * 1990-05-07 1992-11-03 Didier-Werke Ag Gas flushing apparatus for metallurgical vessel
EP0456001A3 (en) * 1990-05-07 1992-12-09 Didier-Werke Ag Device for gas flushing
EP0490062A1 (en) * 1990-12-08 1992-06-17 Didier-Werke Ag Process of manufacturing a gas purging brick and gas purging brick
US5279993A (en) * 1990-12-08 1994-01-18 Didier-Werke Ag Gas injection stone and process of manufacture thereof
DE19504941A1 (en) * 1995-02-15 1996-08-22 Knoellinger Horst Gas purging stone
DE19504941C2 (en) * 1995-02-15 1998-05-20 Knoellinger Horst Gas purging stone
CN101526224B (en) * 2008-03-04 2010-11-03 苏州博能炉窑科技有限公司 Heat storage burner brick

Also Published As

Publication number Publication date
CN1036522A (en) 1989-10-25
US5202079A (en) 1993-04-13
FI84888B (en) 1991-10-31
CN1014904B (en) 1991-11-27
CA1327268C (en) 1994-03-01
ZA89412B (en) 1989-10-25
DE3802657C1 (en) 1989-09-21
JPH01301813A (en) 1989-12-06
KR960008885B1 (en) 1996-07-05
FI84888C (en) 1992-02-10
ES2076936T3 (en) 1995-11-16
JP2597509B2 (en) 1997-04-09
EP0325709B1 (en) 1995-08-16
EP0325709A3 (en) 1990-01-24
ATE126545T1 (en) 1995-09-15
DE3854325D1 (en) 1995-09-21
FI886027L (en) 1989-07-30
KR890012118A (en) 1989-08-24

Similar Documents

Publication Publication Date Title
EP0325709A2 (en) Gas flushing brick
DE3226047C2 (en) Connection between the outlet cone of the closure of a casting vessel for molten metal and the protective tube connected to it
AT405766B (en) KEYSTONE SET
DE4320723A1 (en) Immersion spout
DE1433526B2 (en) Refractory stone for lining the conical part of ovens and lining made of such stones
DE2243517B2 (en) Fireproof wall construction
EP0458040B1 (en) Gas purging assembly with a perforated brick and a gas purging brick
DE3840161C2 (en) Device for opening an operational sequence of a slide valve device and method for opening such a device
EP0081551B1 (en) Coating for a hearth having an at least approximately circular cross-section
DE102013223690A1 (en) Sealing arrangement of a turbine
DE3939241C2 (en) Locking and / or regulating device
DE2633372C2 (en) Support body for filter fabric
DE19806788C2 (en) Cooling element for shaft furnaces, in particular blast furnaces
EP2276863B1 (en) Fireproof ceramic gas cleaning stone
DE3341447C2 (en)
DE4223108C1 (en) Ceramic distributor element - with at least one gas channel provided with a restrictor
DE760706C (en) Device for the production of several concentric centrifugally cast rings
DE2818315C3 (en) Frame for exhaust gas or charging openings in the lid of the electric arc furnace
DE19735053C1 (en) Unit for introduction of gases into metal melts
DE4042203A1 (en) Ladle sliding plate closure - has ring insert in plate opening secured by a thermally expanding mortar to prevent vertical movement during centering
DE1019519B (en) Light metal pistons or cylinders with e.g. closed ring channels designed to accommodate a coolant
DE751231C (en) Iron pit stamp
DE1433526C (en) Refractory stone for lining the conical part of the furnace and lining made of such stones
DE2135945C3 (en) Electrode sealing on an electric arc furnace
DE585416C (en) Pipe extrusion press, in particular lead cable press

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19881123

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE ES FR GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE DE ES FR GB IT LU NL SE

17Q First examination report despatched

Effective date: 19910712

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT LU NL SE

REF Corresponds to:

Ref document number: 126545

Country of ref document: AT

Date of ref document: 19950915

Kind code of ref document: T

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950821

REF Corresponds to:

Ref document number: 3854325

Country of ref document: DE

Date of ref document: 19950921

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2076936

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19991029

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001104

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20051024

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20051117

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20051118

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20051122

Year of fee payment: 18

Ref country code: ES

Payment date: 20051122

Year of fee payment: 18

Ref country code: SE

Payment date: 20051122

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20051123

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061130

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070601

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20061104

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20070601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061104

BERE Be: lapsed

Owner name: *DIDIER-WERKE A.G.

Effective date: 20061130

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20061106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061106

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20071201

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071104