EP0834367B1 - Float for converter closure - Google Patents

Float for converter closure Download PDF

Info

Publication number
EP0834367B1
EP0834367B1 EP97114505A EP97114505A EP0834367B1 EP 0834367 B1 EP0834367 B1 EP 0834367B1 EP 97114505 A EP97114505 A EP 97114505A EP 97114505 A EP97114505 A EP 97114505A EP 0834367 B1 EP0834367 B1 EP 0834367B1
Authority
EP
European Patent Office
Prior art keywords
opening
spring washer
float
guide rod
converter
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.)
Expired - Lifetime
Application number
EP97114505A
Other languages
German (de)
French (fr)
Other versions
EP0834367A1 (en
Inventor
Diethardt Küppers
Gürsel Dogan
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.)
Beck U Kaltheuner Feuerfeste Erzeugnissegmbh & Co KG
Original Assignee
Beck U Kaltheuner Feuerfeste Erzeugnissegmbh & 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.)
Filing date
Publication date
Application filed by Beck U Kaltheuner Feuerfeste Erzeugnissegmbh & Co KG filed Critical Beck U Kaltheuner Feuerfeste Erzeugnissegmbh & Co KG
Publication of EP0834367A1 publication Critical patent/EP0834367A1/en
Application granted granted Critical
Publication of EP0834367B1 publication Critical patent/EP0834367B1/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
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F27D3/159—Equipment for removing or retaining slag for retaining slag during the pouring of the metal or retaining metal during the pouring of the slag

Definitions

  • the invention relates to a converter closure float, which consists of a refractory Material existing float body and a fixable in the float body Has guide rod.
  • floats are well known in the art and are, for example used to retain the slag in a converter.
  • floats consist of a hemisphere made of concrete with a defined Density and a built-in guide rod.
  • the swimmers swim against End of a converter tapping between steel and slag and prevent that Slag flows out of the converter.
  • the guide rod is already in the Float body installed if the float is supplied by the manufacturer. Out However, for space or transportation reasons, it is sometimes preferred if the swimmer is supplied in two parts by the manufacturer. The assembly is then at the customer performed.
  • connection options for suggested the float body and the guide rods, but all very are complex and also special tools, mortar or other handling objects require.
  • a converter closure float is already known, the one Float body and a guide rod fixed in the float body.
  • the float body has a through opening through which a section extends the guide rod extends through.
  • the through opening is with a metallic Provide a lining that surrounds the guide rod. Outside of A bead is molded into the metallic lining, with its Help the guide rod and the metallic lining form-fit with each other are connected.
  • the metallic lining is in turn with the help of suitable anchoring devices fixed in the float body.
  • the lower end of the metallic Lining is formed by a disc which has a through opening, which surrounds the guide rod. For pressing the above A special tool is required.
  • the present invention is therefore based on the object of providing a float its assembly without any aids to simple and inexpensive Way can be accomplished.
  • the guide rod consists of an elongated metallic part, the one over the part of its length immersed in the melt when in use Has jacket made of a refractory material, the spring washer after assembly with the elongated metallic part itself under operating conditions non-releasing connection.
  • the Float body through a passage through which the guide rod is pushed and into which the spring washer is incorporated, a first part of the through opening, which is adjacent to the spring washer, has a diameter which corresponds to the diameter of the jacket.
  • a second part of the Through opening which adjoins the spring washer from the opposite side, have a diameter that corresponds to the diameter of the elongated metallic Partially corresponds. This results in an exact and form-fitting connection between the float body and the guide rod.
  • the float body is advantageously hemispherical.
  • FIG. 4 shows a preferred embodiment of the present invention.
  • the assembled float shown in FIG. 4 consists of the one shown in FIG. 1 shown guide rod 3, 4 and the float body shown in Fig. 2 1.
  • the Float body 1 is hemispherical and has a center a through opening 7a, 7b.
  • the float has a certain density and so swims towards the end of a converter tapping between steel and slag and thus prevents slag from flowing out of the converter.
  • the guide rod consists of a metallic part 3, which preferably has a part its length has a protective jacket 4 made of a refractory Material exists.
  • the through opening of the float body 1 from two parts 7a and 7b, each bordering on the spring washer 2 and through these are separate.
  • the first part 7a of the through opening 7 has a diameter b on the diameter a of the jacket of the guide rod 4th corresponds.
  • the second part 7b of the through opening 7 has a diameter c the diameter d of the unclad metallic part 3 corresponds.
  • the first part 7a of the through opening 7 is via the opening 8 of the spring washer 2 connected to the second part of the through opening 7b.
  • the diameter the opening 8 of the spring washer 2 is smaller than the diameter b of the through opening 7a and smaller than the diameter d of the metallic part 3.
  • the jacket 4 protrudes only a little into the first part of the through opening 7a.
  • the arrangement of the passage opening parts 7a, 7b of the float body 1, the Size and the arrangement of the spring washer are of course not on this Embodiment limited.
  • the spring washer can also be used at the beginning or be arranged at the end of the through opening of the float body 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Amplifiers (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

The float assembly, to retain slag in a converter, has a spring disc (2) incorporated into the float body (1). After assembly, it covers the guide rod (3,4) in a bond with it which does not break under operating conditions.

Description

Die Erfindung betrifft einen Konverterverschlußschwimmer, der einen aus einem feuerfesten Werkstoff bestehenden Schwimmerkörper und eine im Schwimmerkörper fixierbare Führungsstange aufweist.The invention relates to a converter closure float, which consists of a refractory Material existing float body and a fixable in the float body Has guide rod.

Derartige Schwimmer sind aus dem Stand der Technik wohlbekannt und werden beispielsweise zum Zurückhalten der Schlacke in einem Konverter verwendet. Die Schwimmer bestehen in den meisten Fällen aus einer Halbkugel aus Beton mit definierter Dichte und einer eingebauten Führungsstange. Die Schwimmer schwimmen gegen Ende eines Konverterabstiches zwischen Stahl und Schlacke und verhindern, daß Schlacke aus dem Konverter fließt. Teilweise ist die Führungsstange bereits in dem Schwimmerkörper eingebaut, wenn der Schwimmer vom Hersteller geliefert wird. Aus Platz- oder Transportgründen wird es jedoch manchmal bevorzugt, wenn der Schwimmer zweiteilig vom Hersteller geliefert wird. Der Zusammenbau wird dann beim Abnehmer vorgenommen. Es wurden bereits eine Vielzahl von Verbindungsmöglichkeiten für den Schwimmerkörper und die Führungsstangen vorgeschlagen, die jedoch alle sehr aufwendig sind und darüber hinaus spezielle Werkzeuge, Mörtel oder sonstige Handhabungsgegenstände erfordern.Such floats are well known in the art and are, for example used to retain the slag in a converter. The In most cases, floats consist of a hemisphere made of concrete with a defined Density and a built-in guide rod. The swimmers swim against End of a converter tapping between steel and slag and prevent that Slag flows out of the converter. Sometimes the guide rod is already in the Float body installed if the float is supplied by the manufacturer. Out However, for space or transportation reasons, it is sometimes preferred if the swimmer is supplied in two parts by the manufacturer. The assembly is then at the customer performed. There have already been a variety of connection options for suggested the float body and the guide rods, but all very are complex and also special tools, mortar or other handling objects require.

Aus der GB-A-2 259 975 ist bereits ein Konverterverschlußschwimmer bekannt, der einen Schwimmerkörper und eine im Schwimmerkörper fixierte Führungsstange aufweist. Der Schwimmerkörper besitzt eine Durchgangsöffnung, durch welche sich ein Abschnitt der Führungsstange hindurch erstreckt. Die Durchgangsöffnung ist mit einer metallischen Auskleidung versehen, welche die Führungsstange umgibt. Außerhalb des Schwimmerkörpers ist in die metallische Auskleidung eine Sicke eingeformt, mit deren Hilfe die Führungsstange und die metallische Auskleidung formschlüssig miteinander verbunden sind. Die metallische Auskleidung ist ihrerseits mit Hilfe geeigneter Verankerungsvorrichtungen im Schwimmerkörper befestigt. Das untere Ende der metallischen Auskleidung wird von einer Scheibe gebildet, welche eine Durchgangsöffnung aufweist, welche die Führungsstange umschließt. Zum Einpressen der vorstehend genannten Sicke ist ein spezielles Werkzeug erforderlich.From GB-A-2 259 975 a converter closure float is already known, the one Float body and a guide rod fixed in the float body. The float body has a through opening through which a section extends the guide rod extends through. The through opening is with a metallic Provide a lining that surrounds the guide rod. Outside of A bead is molded into the metallic lining, with its Help the guide rod and the metallic lining form-fit with each other are connected. The metallic lining is in turn with the help of suitable anchoring devices fixed in the float body. The lower end of the metallic Lining is formed by a disc which has a through opening, which surrounds the guide rod. For pressing the above A special tool is required.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Schwimmer bereitzustellen, dessen Zusammenbau ohne jedes Hilfsmittel auf einfache und kostengünstige Art und Weise bewerkstelligt werden kann.The present invention is therefore based on the object of providing a float its assembly without any aids to simple and inexpensive Way can be accomplished.

Erfindungsgemäß wird diese Aufgabe durch den Gegenstand des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by the subject matter of patent claim 1 solved.

Bei der erfindungsgemäßen Lösung braucht der Schwimmerkörper nur über die Führungsstange gestülpt zu werden bzw. die Führungsstange in den Schwimmerkörper geschoben zu werden, ohne daß zusätzliches Werkzeug nötig ist. Wird die Führungsstange in Einführrichtung durch die aus Stahl bestehende Federscheibe in den Schwimmerkörper geschoben, so wird diese von der Federscheibe festgeklemmt und kann nicht mehr aus dem Schwimmerkörper gezogen werden. Gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung weist die Federscheibe eine mit Lamellen versehene Durchgangsöffnung auf. Die Durchgangsöffnung der Federscheibe weist einen kleineren Durchmesser als die Führungsstange auf. Beim Zusammenbau der Führungsstange mit dem Schwimmerkörper verkrallen sich die Lamellen der Federscheibe ausreichend fest an der Führungsstange, so daß die beiden Teile fest und unlösbar miteinander verbunden sind.In the solution according to the invention, the float body needs only via the guide rod to be put over or the guide rod pushed into the float body to become, without the need for additional tools. Will the guide rod in the direction of insertion through the steel spring washer into the float body pushed, it is clamped by the spring washer and cannot be pulled out of the float. According to a preferred embodiment the present Invention, the spring washer has a through opening provided with lamellae on. The through opening of the spring washer has a smaller diameter than the guide bar on. When assembling the guide rod with the Float bodies grip the lamellae of the spring washer sufficiently firmly the guide rod so that the two parts are firmly and permanently connected are.

Es ist vorteilhaft, wenn die Führungsstange aus einem länglichen metallischen Teil besteht, der über den bei Gebrauch in die Schmelze tauchenden Teil seiner Länge einen Mantel aus einem feuerfesten Material aufweist, wobei die Federscheibe nach dem Zusammenbau mit dem länglichen metallischen Teil die unter Betriebsbedingungen sich nicht lösende Verbindung eingeht. Durch den Mantel wird der metallische Teil vor der Schmelze geschützt.It is advantageous if the guide rod consists of an elongated metallic part, the one over the part of its length immersed in the melt when in use Has jacket made of a refractory material, the spring washer after assembly with the elongated metallic part itself under operating conditions non-releasing connection. The metallic part in front of the Melt protected.

Gemäß einem vorteilhaften Ausführungsbeispiel der vorliegenden Erfindung weist der Schwimmerkörper eine Durchgangsöffnung auf, durch die die Führungsstange geschoben wird und in die die Federscheibe eingearbeitet ist, wobei ein erster Teil der Durchgangsöffnung, der an die Federscheibe angrenzt, einen Durchmesser aufweist, der dem Durchmesser des Mantels entspricht. Dabei umschließt zumindest ein Teil des ersten Teils der Durchgangsöffnung den Mantel. Dadurch, daß der Mantel in den ersten Teil der Durchgangsöffnung hineinragt, wird der metallische Teil der Führungsstange vor der Schlacke geschützt. Darüber hinaus kann ein zweiter Teil der Durchgangsöffnung, der von der gegenüberliegenden Seite an die Federscheibe angrenzt, einen Durchmesser aufweisen, der dem Durchmesser des länglichen metallischen Teils entspricht. Somit ergibt sich eine exakte und formschlüssige Verbindung zwischen dem Schwimmerkörper und der Führungsstange.According to an advantageous embodiment of the present invention, the Float body through a passage through which the guide rod is pushed and into which the spring washer is incorporated, a first part of the through opening, which is adjacent to the spring washer, has a diameter which corresponds to the diameter of the jacket. This includes at least one Part of the first part of the through opening the jacket. The fact that the coat in The metallic part of the guide rod protrudes into the first part of the through opening protected from the slag. In addition, a second part of the Through opening, which adjoins the spring washer from the opposite side, have a diameter that corresponds to the diameter of the elongated metallic Partially corresponds. This results in an exact and form-fitting connection between the float body and the guide rod.

In vorteilhafter Weise ist der Schwimmerkörper halbkugelförmig ausgebildet.The float body is advantageously hemispherical.

Ein Ausführungsbeispiel der vorliegenden Erfindung wird anhand der nachfolgenden Figuren näher erläutert. Dabei zeigt

Fig. 1
einen Längsschnitt durch eine Führungsstange eines erfindungsgemäßen Schwimmers;
Fig. 2
einen Längsschnitt durch einen Schwimmerkörper des erfindungsgemäßen Schwimmers;
Fig. 3
einen Querschnitt durch den Schwimmerkörper des erfindungsgemäßen Schwimmers;
Fig. 4
einen zusammengebauten Schwimmer gemäß der vorliegenden Erfindung;
Fig. 5a
eine Draufsicht auf eine Federscheibe;
Fig. 5b
einen Schnitt entlang der Linie 1-1 in Fig. 5a.
An embodiment of the present invention is explained in more detail with reference to the following figures. It shows
Fig. 1
a longitudinal section through a guide rod of a float according to the invention;
Fig. 2
a longitudinal section through a float body of the float according to the invention;
Fig. 3
a cross section through the float body of the float according to the invention;
Fig. 4
an assembled float according to the present invention;
Fig. 5a
a plan view of a spring washer;
Fig. 5b
a section along the line 1-1 in Fig. 5a.

Die Figuren 1 bis 5 zeigen ein bevorzugtes Ausführungsbeispiel der vorliegenden Erfindung. Der in Fig. 4 gezeigte, zusammengebaute Schwimmer besteht aus der in Fig. 1 gezeigten Führungsstange 3, 4 und dem in Fig. 2 gezeigten Schwimmerkörper 1. Der Schwimmerkörper 1 ist halbkugelförmig ausgebildet und weist im Zentrum eine Durchgangsöffnung 7a, 7b auf. Der Schwimmer hat eine bestimmte Dichte und schwimmt so gegen Ende eines Konverterabstiches zwischen Stahl und Schlacke und verhindert somit, daß Schlacke aus dem Konverter fließt. Wie aus Fig. 1 hervorgeht, besteht die Führungsstange aus einem metallischen Teil 3, der vorzugsweise über einen Teil seiner Länge einen schützenden Mantel 4 aufweist, der aus einem feuerfesten Material besteht.Figures 1 to 5 show a preferred embodiment of the present invention. The assembled float shown in FIG. 4 consists of the one shown in FIG. 1 shown guide rod 3, 4 and the float body shown in Fig. 2 1. The Float body 1 is hemispherical and has a center a through opening 7a, 7b. The float has a certain density and so swims towards the end of a converter tapping between steel and slag and thus prevents slag from flowing out of the converter. As is apparent from Fig. 1 the guide rod consists of a metallic part 3, which preferably has a part its length has a protective jacket 4 made of a refractory Material exists.

In diesem Ausführungsbeispiel besteht die Durchgangsöffnung des Schwimmerkörpers 1 aus zwei Teilen 7a und 7b, die jeweils an die Federscheibe 2 angrenzen und durch diese getrennt sind. Der erste Teil 7a der Durchgangsöffnung 7 weist einen Durchmesser b auf, der dem Durchmesser a des Mantels der Führungsstange 4 entspricht. Der zweite Teil 7b der Durchgangsöffnung 7 weist einen Durchmesser c auf, der dem Durchmesser d des nicht ummantelten, metallischen Teils 3 entspricht. Der erste Teil 7a der Durchgangsöffnung 7 ist über die Öffnung 8 der Federscheibe 2 mit dem zweiten Teil der Durchgangsöffnung 7b verbunden. Der Durchmesser der Öffnung 8 der Federscheibe 2 ist kleiner als der Durchmesser b der Durchgangsöffnung 7a und kleiner als der Durchmesser d des metallischen Teils 3. In Figuren 5a und 5b ist eine bevorzugte Ausführungsform einer Federscheibe 2 gezeigt, die in dem Schwimmerkörper 1 eingebaut ist. Die Federscheibe 2 ist aus Federstahl gefertigt und, wie aus Fig. 5b hervorgeht, gekrümmt verformt, um eine bessere Federwirkung zu erzielen. Darüber hinaus weist die Federscheibe 2 mehrere radial nach innen gerichtete Lamellen 6 auf, die dazu dienen, daß die Federscheibe und die Führungsstange eine feste Verbindung miteinander bilden.In this embodiment, the through opening of the float body 1 from two parts 7a and 7b, each bordering on the spring washer 2 and through these are separate. The first part 7a of the through opening 7 has a diameter b on the diameter a of the jacket of the guide rod 4th corresponds. The second part 7b of the through opening 7 has a diameter c the diameter d of the unclad metallic part 3 corresponds. The first part 7a of the through opening 7 is via the opening 8 of the spring washer 2 connected to the second part of the through opening 7b. The diameter the opening 8 of the spring washer 2 is smaller than the diameter b of the through opening 7a and smaller than the diameter d of the metallic part 3. In figures 5a and 5b, a preferred embodiment of a spring washer 2 is shown, which is shown in FIG the float body 1 is installed. The spring washer 2 is made of spring steel and, as can be seen in Fig. 5b, deformed curved to give a better spring effect achieve. In addition, the spring washer 2 has a plurality of radially inwardly directed Slats 6, which serve that the spring washer and the guide rod a form a solid connection with each other.

Beim Zusammenbau des Schwimmerkörpers 1 und der Führungsstange 3, 4 wird die Führungsstange mit dem nicht ummantelten, metallischen Teil 3 in Einführrichtung A zunächst durch den ersten Teil 7a der Durchgangsöffnung T des Schwimmerkörpers 1 und durch die Durchgangsöffnung 8 der Federscheibe 2 geschoben. Dabei verkrallen sich die Lamellen 6 der Federscheibe 2 ausreichend fest an dem metallischen Teil 3 der Führungsstange 3, 4. Es ergibt sich somit eine sich unter Betriebsbedingungen nicht lösende, formschlüssige Verbindung, wobei der Mantel 4 in dem ersten Teil 7a der Öffnung zu liegen kommt und der nicht ummantelte metallische Teil 3 der Führungsstange in dem zweiten Teil des Schwimmerkörpers 1. Bei diesem Ausführungsbeispiel stößt die Stirnfläche 4a des Mantels 4 an der Federscheibe 2 an.When assembling the float body 1 and the guide rod 3, 4, the Guide rod with the uncovered, metallic part 3 in the insertion direction A first through the first part 7a of the through opening T of the float body 1 and pushed through the through opening 8 of the spring washer 2. Claw in the process the slats 6 of the spring washer 2 are sufficiently firm on the metallic part 3 of the Guide rod 3, 4. There is therefore no result under operating conditions releasing, positive connection, the jacket 4 in the first part 7a of the opening comes to rest and the unclad metallic part 3 of the guide rod in the second part of the float body 1. In this embodiment, the End face 4a of the jacket 4 on the spring washer 2.

Bei einem nicht gezeigten weiteren Ausführungsbeispiel ragt der Mantel 4 nur ein Stück in den ersten Teil der Durchgangsöffnung 7a hinein.In a further embodiment, not shown, the jacket 4 protrudes only a little into the first part of the through opening 7a.

Die Anordnung der Durchgangsöffnungsteile 7a, 7b des Schwimmerkörpers 1, deren Größe und die Anordnung der Federscheibe sind selbstverständlich nicht auf dieses Ausführungsbeispiel beschränkt. Die Federscheibe kann beispielsweise auch am Anfang oder am Ende der Durchgangsöffnung des Schwimmerkörpers 1 angeordnet sein.The arrangement of the passage opening parts 7a, 7b of the float body 1, the Size and the arrangement of the spring washer are of course not on this Embodiment limited. The spring washer can also be used at the beginning or be arranged at the end of the through opening of the float body 1.

Claims (8)

  1. Converter closing float, which comprises a float body (1) made of a refractory material having a through-opening (7) and a guide rod (3, 4) fixable in the through-opening (7), wherein a spring washer (2) made of spring steel is incorporated in the float body and has a through-opening (8) which encloses a portion of the guide rod (3, 4), characterized in that the through-opening (8) of the spring washer (2) has a smaller diameter than the portion of the guide rod (3) enclosed by the through-opening (7b) so that the float body (1) is held fast in a positive connection by the spring washer.
  2. Converter closing float according to claim 1, characterized in that the spring washer (2) has a through-opening (8) provided with bars (6).
  3. Converter closing float according to claim 1 or 2, characterized in that the guide rod (3, 4) comprises an elongate metal component (3) which, over the part of its length which during use dips into the cast, has an envelope (4) of a refractory material.
  4. Converter closing float according to at least one of claims 1 to 3, characterized in that the spring washer (2) enters into a positive connection with the elongate metal part (3).
  5. Converter closing float according to claim 3 or 4, characterized in that a first part (7a) of the through-opening adjoining the spring washer (2) has a diameter (b), which corresponds to the diameter (a) of the envelope (4).
  6. Converter closing float according to claim 5, characterized in that at least part of the first part (7a) of the through-opening encloses the envelope (4).
  7. Converter closing float according to claim 6, characterized in that a second part (7b) of the through-opening adjoining the opposite side of the spring washer (2) has a diameter, which corresponds to the diameter of the elongate metal part (3).
  8. Converter closing float according to at least one of the preceding claims, characterized in that the float body is of a hemispherical design.
EP97114505A 1996-10-01 1997-08-21 Float for converter closure Expired - Lifetime EP0834367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29617115U 1996-10-01
DE29617115U DE29617115U1 (en) 1996-10-01 1996-10-01 Converter lock float

Publications (2)

Publication Number Publication Date
EP0834367A1 EP0834367A1 (en) 1998-04-08
EP0834367B1 true EP0834367B1 (en) 2001-01-24

Family

ID=8030023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114505A Expired - Lifetime EP0834367B1 (en) 1996-10-01 1997-08-21 Float for converter closure

Country Status (3)

Country Link
EP (1) EP0834367B1 (en)
AT (1) ATE198848T1 (en)
DE (2) DE29617115U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6723275B2 (en) * 2001-01-16 2004-04-20 Tetron, Inc. Vortex inhibitor with sacrificial rod

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494734A (en) * 1983-07-22 1985-01-22 Labate M D Slag retaining device for use during tapping of converters and method
US4709903A (en) * 1986-05-08 1987-12-01 Labate M D Slag retaining device for use in converters, ladles, or the like
GB8922863D0 (en) * 1989-10-11 1989-11-29 Monocon Int Ltd Tap hole closure means
DE9005499U1 (en) * 1990-05-15 1991-09-12 Foseco International Ltd., Birmingham Floating body closure to retain the slag
GB9120602D0 (en) * 1991-09-28 1991-11-06 Monocon International Ltd Metallurgical dart

Also Published As

Publication number Publication date
ATE198848T1 (en) 2001-02-15
DE29617115U1 (en) 1996-11-14
EP0834367A1 (en) 1998-04-08
DE59702948D1 (en) 2001-03-01

Similar Documents

Publication Publication Date Title
EP0032105B1 (en) Pin and sleeve for the connection of constructional elements in civil engineering
DE3346537A1 (en) SPREADING ANCHOR
DE2717250B2 (en) Mandrel for inserting a threaded insert into threaded holes
EP0834367B1 (en) Float for converter closure
DE3405094A1 (en) Elastic retaining bracket for round rods having variable diameters
EP0428496A1 (en) Connection for construction elements of different materials
AT413465B (en) DEVICE FOR FIXING A VIBRATOR ON AN INCLUSIVE ROPE
DE2009184A1 (en) Bowden cable
EP0072030B1 (en) Mounting for a pipe cleaner
DE69512820T2 (en) Floor anchor post
DE102020102802B4 (en) trampoline
DE2710184C2 (en) Locking device
DE2222734B2 (en) THANK YOU
DE3304480C1 (en) Clip for holding together sheets of paper or the like
DE4404390C2 (en) Holding device for wall formwork
DE4417060A1 (en) Spacer end cap for reinforcing rods in steel reinforced concrete
DE2217726A1 (en) Device for plugging the tapping hole of rotating converters
DE1575092C (en)
DE8702025U1 (en) Connection element to be installed between the circuit board and the connector with welded spring contact element
DE3826936A1 (en) Reinforcement element for reinforcing panel-like parts which are to be produced by casting
DE2744660A1 (en) WIRE ROPE CONNECTOR
DE4204971C2 (en) Surgical instrument
DE1609789C (en) Disc-shaped spacer for concrete reinforcing bars
DE2634322C2 (en) Practice or blank cartridge with a projectile part made of plastic
DE1935221C3 (en)

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

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

17P Request for examination filed

Effective date: 19980218

17Q First examination report despatched

Effective date: 19980924

AKX Designation fees paid

Free format text: AT BE DE DK FI FR GB IT LU NL SE

RBV Designated contracting states (corrected)

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

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19980924

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 DK FI FR GB IT LU NL SE

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

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20010124

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20010124

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010124

REF Corresponds to:

Ref document number: 198848

Country of ref document: AT

Date of ref document: 20010215

Kind code of ref document: T

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

Effective date: 20010124

REF Corresponds to:

Ref document number: 59702948

Country of ref document: DE

Date of ref document: 20010301

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

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010424

ET Fr: translation filed
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 EXPIRATION OF PROTECTION

Effective date: 20010821

Ref country code: AT

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

Effective date: 20010821

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: BE

Payment date: 20110822

Year of fee payment: 15

BERE Be: lapsed

Owner name: *BECK U. KALTHEUNER FEUERFESTE ERZEUGNISSE G.M.B.H

Effective date: 20120831

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: 20120831

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

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

Ref country code: NL

Payment date: 20160822

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20160826

Year of fee payment: 20

Ref country code: GB

Payment date: 20160830

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20160825

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59702948

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20170820

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20170820

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 EXPIRATION OF PROTECTION

Effective date: 20170820