[go: up one dir, main page]

EP0057946A1 - Tapping assembly for converters - Google Patents

Tapping assembly for converters Download PDF

Info

Publication number
EP0057946A1
EP0057946A1 EP82200053A EP82200053A EP0057946A1 EP 0057946 A1 EP0057946 A1 EP 0057946A1 EP 82200053 A EP82200053 A EP 82200053A EP 82200053 A EP82200053 A EP 82200053A EP 0057946 A1 EP0057946 A1 EP 0057946A1
Authority
EP
European Patent Office
Prior art keywords
tapping
blocks
tapping channel
disks
block
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
EP82200053A
Other languages
German (de)
French (fr)
Other versions
EP0057946B1 (en
Inventor
Rupert Dipl.-Ing. Steinwider
Paul Dipl.-Ing. Weitzer
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.)
Veitscher Magnesitwerke AG
Original Assignee
Veitscher Magnesitwerke 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3492905&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0057946(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Veitscher Magnesitwerke AG filed Critical Veitscher Magnesitwerke AG
Publication of EP0057946A1 publication Critical patent/EP0057946A1/en
Application granted granted Critical
Publication of EP0057946B1 publication Critical patent/EP0057946B1/en
Expired 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
    • 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
    • C21C5/44—Refractory linings
    • C21C5/445—Lining or repairing the taphole

Definitions

  • the invention relates to a tapping apparatus for K on- verter having a closed tapping channel which is comprised of refractory blocks or discs, the blocks or discs of the tapping channel forming portions have perforations.
  • Known tapping devices for converters have: a continuously cylindrical tapping channel.
  • Such cylindrical tapping channels known from DE-OS 1 583 306 have the disadvantage that disproportionately long tapping times result at the beginning of each new tapping step, which decrease initially quickly and then proportionally to the availability. The reason for this is the constriction of the outflowing steel when it enters the tapping channel.
  • the tapping beam is accelerated by gravity, which leads to a further reduction in the cross-section of the tapping beam.
  • since essentially only the fire-side part appears as wear resistance in a cylindrical tapping channel there is high uneven wear and thus a relatively short service life of the entire tapping device.
  • the application has the task of eliminating the above-mentioned disadvantages of known tapping devices.
  • This is achieved according to the invention in a tapping device of the type mentioned at the outset in that the tapping channel has a block or disk on the inlet side with a funnel-shaped opening and the diameter of the opening of the block or disk is smaller on the cold side of the tapping channel than on the fire side.
  • the diameters of the openings in the blocks or disks of the tapping channel preferably narrow conically in the direction of the cold side.
  • the tapping channel is thus adapted to the tapping jet. Surprisingly, this results in the following essential advantages.
  • the shelf life of the rack delivery is increased significantly.
  • the tapping times are reduced.
  • An optimally bundled tapping jet is obtained the first time a new delivery is tapped.
  • the better bundling results in less oxidation of the pouring stream.
  • Due to the channel shape adapted to the flow conditions there is less widening of the inlet nozzle towards the end of a tapping step and thus less slag entrainment towards the end of the tapping.
  • a preferred embodiment of the invention consists in that, with the exception of the inlet-side block or disk, the openings of the blocks or disks are cylindrical, as is known per se, but the diameters of the openings narrow step-wise towards the cold side. This results in a tapping channel that is staggered in diameter, which is made of common refractory blocks or discs can be assembled. The steps in the tapping channel are removed by the first tapping feeds, so that within a very short time a tapping channel with a continuously smooth inner surface is obtained.
  • the drawing shows two exemplary embodiments of a tapping device according to the invention.
  • the tapping device according to Figure 1 consists of several refractory tapping blocks.
  • the top tapping block 1 is designed as an inlet funnel.
  • the two subsequent blocks 2 have cylindrical openings, the inner diameter of which is equal to the outlet diameter of the uppermost block 1.
  • the lower block 2 is followed by three further blocks, the openings of which have the same diameter as one another.
  • the diameter of the opening of the blocks 3 is, however, smaller than that of the opening of the blocks 2.
  • Blocks 2, 3 and 4 are common standard products, so that the tapping device according to the invention is simple to produce.
  • the steps 5 resulting between the blocks 2, 3 and 4 are quickly removed during the first infeed, so that a conical tapping is obtained within a very short time, which optimally adapts to the tapping jet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Eine Abstichvorrichtung für Konverter mit einem geschlossenen Abstichkanal, welcher sich aus feuerfesten Blöcken oder Scheiben zusammensetzt, wobei die Blöcke bzw. Scheiben Abschnitte des Abstichkanals bildende Durchbrechungen aufweisen. Zur Erzielung kürzerer Abstichzeiten und längerer Endhaltbarkeiten ist vorgesehen, daß der Abstichkanal einlaufseitig einen Block bzw. Scheibe (1) mit einer trichterförmigen Durchbrechung aufweist und der Durchmesser der Durchbrechung des Blockes bzw. der Scheibe an der Kaltseite des Abstichkanals kleiner ist als an der Feuerseite.A tapping device for converters with a closed tapping channel, which is composed of refractory blocks or disks, wherein the blocks or disks have openings forming sections of the tapping channel. To achieve shorter tapping times and longer end lives, it is provided that the tapping channel has a block or disk (1) on the inlet side with a funnel-shaped opening and the diameter of the opening of the block or disk is smaller on the cold side of the tapping channel than on the fire side.

Description

Die Erfindung bezieht sich auf eine Abstichvorrichtung für Kon- verter mit einem geschlossenen Abstichkanal, welcher sich aus feuerfesten Blöcken oder Scheiben zusammensetzt,wobei die Blöcke bzw. Scheiben Abschnitte des Abstichkanals bildende Durchbrechungen aufweisen.The invention relates to a tapping apparatus for K on- verter having a closed tapping channel which is comprised of refractory blocks or discs, the blocks or discs of the tapping channel forming portions have perforations.

Bekannte Abstichvorrichtungen für Konverter besitzen:einen durchgehend zylindrischen Abstichkanal. Solche etwa aus der DE-OS 1 583 306 bekannte zylindrische Abstichkanäle besitzen den Nachteil, daß sich zu Beginn jeder neuen Abstichzustellung überproportional lange Abstichzeiten ergeben, die anfänglich rasch und danach proportional zur Enthaltbarkeit absinken. Ursache dafür ist die Einschnürung des ausfließenden Stahles beim Eintritt in den Abstichkanal. Zusätzlich erfolgt noch eine Beschleunigung des Abstichstrahles durch die Erdanziehung, wodurch es zu einer weiteren Querschnittsverminderung des Abstichstrahles kommt. Da ferner bei einem zylindrischen Abstichkanal im wesentlichen nur der feuerseitige Teil als Verschleißwiderstand auftritt, kommt es zu hohem ungleichmäßigen Verschleiß und damit zu einer relativ kurzen Lebensdauer der gesamten Abstichvorrichtung.Known tapping devices for converters have: a continuously cylindrical tapping channel. Such cylindrical tapping channels known from DE-OS 1 583 306 have the disadvantage that disproportionately long tapping times result at the beginning of each new tapping step, which decrease initially quickly and then proportionally to the availability. The reason for this is the constriction of the outflowing steel when it enters the tapping channel. In addition, the tapping beam is accelerated by gravity, which leads to a further reduction in the cross-section of the tapping beam. Furthermore, since essentially only the fire-side part appears as wear resistance in a cylindrical tapping channel, there is high uneven wear and thus a relatively short service life of the entire tapping device.

Die Anmeldung stellt sich die Aufgabe, die oben angeführten Nachteile bekannter Abstichvorrichtungen zu beseitigen. Dies wird bei einer Abstichvorrichtung der eingangs angeführten Art erfindungsgemäß dadurch erreicht, daß der Abstichkanal einlaufseitig einen Block bzw. Scheibe mit einer trichterförmigen Durchbrechung aufweist und der Durchmesser der Durchbrechung des Blockes bzw. der Scheibe an der Kaltseite des Abstichkanals kleiner ist als an der Feuerseite. Vorzugsweise verengen sich die Durchmesser der Durchbrechungen der Blöcke bzw. Scheiben des Abstichkanals in Richtung zur Kaltseite konisch.The application has the task of eliminating the above-mentioned disadvantages of known tapping devices. This is achieved according to the invention in a tapping device of the type mentioned at the outset in that the tapping channel has a block or disk on the inlet side with a funnel-shaped opening and the diameter of the opening of the block or disk is smaller on the cold side of the tapping channel than on the fire side. The diameters of the openings in the blocks or disks of the tapping channel preferably narrow conically in the direction of the cold side.

Erfindungsgemäß wird somit der Abstichkanal dem Abstichstrahl angepaßt. Dadurch ergeben sich überraschenderweise folgende wesentlichen Vorteile. Die Haltbarkeit der Abstichzustellung wird wesentlich gesteigert. Die Abstichzeiten werden verkürzt. Man erhält bereits bei den ersten Abstichen einer neuen Zustellung einen optimal gebündelten Abstichstrahl. Durch die bessere Bündelung erfolgt eine geringere Oxidation des Gießstrahles. Dadurch ergibt sich ein geringerer Verbrauch an Oxidationsmitteln und die Qualität des Strahles wird verbessert, weil dieser nun weniger Einschlüsse aufweist. Durch die den Strömungsverhältnissen angepaßte Kanalform kommt es zu einer geringeren Aufweitung der Einlaufdüse gegen Ende einer Abstichzustellung und damit zu einem geringeren Mitreißen von Schlacke gegen das Ende des Abstiches.According to the invention, the tapping channel is thus adapted to the tapping jet. Surprisingly, this results in the following essential advantages. The shelf life of the rack delivery is increased significantly. The tapping times are reduced. An optimally bundled tapping jet is obtained the first time a new delivery is tapped. The better bundling results in less oxidation of the pouring stream. This results in a lower consumption of oxidizing agents and the quality of the jet is improved because it now has fewer inclusions. Due to the channel shape adapted to the flow conditions, there is less widening of the inlet nozzle towards the end of a tapping step and thus less slag entrainment towards the end of the tapping.

Eine bevorzugte Ausführungsform der Erfindung besteht darin, daß mit Ausnahme des bzw. der einlaufseitigen Blockes bzw. Scheibe die Durchbrechungen der Blöcke bzw. Scheiben wie an sich bekannt zylinderförmig ausgebildet sind, wobei sich jedoch die Durchmesser der Durchbrechungen in Richtung zur Kaltseite stufenförmig verengen. Dadurch wird ein im Durchmesser gestaffelter Abstichkanal erhalten, welcher aus gängigen feuerfesten Blöcken bzw. Scheiben zusammengebaut werden kann. Die im Abstichkanal vorhandenen Stufen werden durch die ersten Abstichzustellungen abgetragen, so daß innerhalb kürzester Zeit ein Abstichkanal mit durchgehend glatter Innenfläche erhalten wird.A preferred embodiment of the invention consists in that, with the exception of the inlet-side block or disk, the openings of the blocks or disks are cylindrical, as is known per se, but the diameters of the openings narrow step-wise towards the cold side. This results in a tapping channel that is staggered in diameter, which is made of common refractory blocks or discs can be assembled. The steps in the tapping channel are removed by the first tapping feeds, so that within a very short time a tapping channel with a continuously smooth inner surface is obtained.

In der Zeichnung sind zwei Ausführungsbeispiele für eine erfindungsgemäße Abstichvorrichtung gezeigt,The drawing shows two exemplary embodiments of a tapping device according to the invention,

Die Abstichvorrichtung nach Figur 1 besteht aus mehreren feuerfesten Abstichblöcken. Der oberste Abstichblock 1 ist als Einlauftrichter ausgeführt. Die beiden anschließenden Blöcke 2 besitzen zylindrische Durchbrechungen, deren Innendurchmesser gleich ist dem Auslaßdurchmesser des obersten Blocks 1. An dem unteren Block 2 schließen sich drei weitere Blöcke an, deren Durchbrechungen untereinander gleiche Durchmesser aufweisen. Der Durchmesser der Durchbrechung der Blöcke 3 ist jedoch kleiner als jener der Durchbrechung der Blöcke 2. Bei der Ausführungsform nach Figur 2 werden nur ein Block 2, zwei Blöcke 3 und noch zusätzlich zwei Blöcke 4 verwendet. Bei den Blöcken 2,3 und 4 handelt es sich um gängige Standardprodukte,'so daß die erfindungsgemäße Abstichvorrichtung einfach herstellbar ist. Die zwischen den Blöcken 2,3 und 4 sich ergebenden Stufen 5 werden bei der ersten Zustellung rasch abgetragen, so daß innerhalb kürzester Zeit ein konischer Abstich erhalten wird, welcher sich dem Abstichstrahl optimal anpaßt.The tapping device according to Figure 1 consists of several refractory tapping blocks. The top tapping block 1 is designed as an inlet funnel. The two subsequent blocks 2 have cylindrical openings, the inner diameter of which is equal to the outlet diameter of the uppermost block 1. The lower block 2 is followed by three further blocks, the openings of which have the same diameter as one another. The diameter of the opening of the blocks 3 is, however, smaller than that of the opening of the blocks 2. In the embodiment according to FIG. 2, only one block 2, two blocks 3 and additionally two blocks 4 are used. Blocks 2, 3 and 4 are common standard products, so that the tapping device according to the invention is simple to produce. The steps 5 resulting between the blocks 2, 3 and 4 are quickly removed during the first infeed, so that a conical tapping is obtained within a very short time, which optimally adapts to the tapping jet.

Claims (3)

1. Abstichvorrichtung für Konverter mit einem geschlossenen Abstichkanal, welcher sich aus feuerfesten Blöcken oder Scheiben zusammensetzt, wobei die Blöcke bzw. Scheiben Abschnitte des Abstichkanals bildende Durchbrechungen aufweisen,
dadurch gekennzeichnet,
daß der Abstichkanal einlaufseitig einen Block bzw. Scheibe (1) mit einer trichterförmigen Durchbrechung aufweist und de Durchmesser der Durchbrechung des Blockes bzw. der Scheibe an der Kaltseite des Abstichkanals kleiner ist als an der Feuerseite.1. tapping device for converters with a closed tapping channel, which is composed of refractory blocks or disks, the blocks or disks having openings forming sections of the tapping channel,
characterized,
that the tapping channel has a block or disk (1) on the inlet side with a funnel-shaped opening and the diameter of the opening of the block or disk is smaller on the cold side of the tapping channel than on the fire side. 2. Abstichvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß sich die Durchmesser der Durchbrechungen der Blöcke bzw. Scheiben des Abstichkanals in Richtung zur Kaltseite konisc] verengen.2. tapping device according to claim 1,
characterized,
that the diameters of the openings of the blocks or disks of the tapping channel narrow conically towards the cold side. 3. Abstichvor-richtung nach Anspruch 1,
dadurch gekennzeichnet,
daß mit Ausnahme des bzw. der einlaufseitigen Blockes bzw. Scheibe (1) die Durchbrechungen der Blöcke bzw. Scheiben (2,3,4) wie an sich bekannt, zylinderförmig ausgebildet sin wobei sich jedoch die Durchmesser der Durchbrechungen in Richtung zur Kaltseite stufenförmig verengen.3. tapping device according to claim 1,
characterized,
that, with the exception of the inlet-side block or disk (1), the openings of the blocks or disks (2, 3, 4) are cylindrical, as is known per se, but the diameters of the openings narrow step-like in the direction of the cold side .
EP82200053A 1981-02-05 1982-01-18 Tapping assembly for converters Expired EP0057946B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0052481A AT387039B (en) 1981-02-05 1981-02-05 TAPPING DEVICE FOR CONVERTER
AT524/81 1981-02-05

Publications (2)

Publication Number Publication Date
EP0057946A1 true EP0057946A1 (en) 1982-08-18
EP0057946B1 EP0057946B1 (en) 1986-05-14

Family

ID=3492905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200053A Expired EP0057946B1 (en) 1981-02-05 1982-01-18 Tapping assembly for converters

Country Status (12)

Country Link
US (1) US4427184A (en)
EP (1) EP0057946B1 (en)
JP (1) JPS57145919A (en)
AT (1) AT387039B (en)
BR (1) BR8200598A (en)
CA (1) CA1170450A (en)
DE (2) DE3271083D1 (en)
DK (1) DK151104C (en)
DZ (1) DZ375A1 (en)
ES (1) ES271921Y (en)
TR (1) TR21471A (en)
ZA (1) ZA82358B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249647A1 (en) * 1986-06-18 1987-12-23 Radex West Gesellschaft mit beschränkter Haftung Fireproof tap hole
EP0561181A3 (en) * 1992-03-17 1994-02-02 Didier Werke Ag
WO2005118889A3 (en) * 2004-06-04 2006-04-06 Refractory Intellectual Prop Tapping tube
WO2017157444A1 (en) * 2016-03-17 2017-09-21 Refractory Intellectual Property Gmbh & Co. Kg Taphole assembly

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653677A (en) * 1985-04-16 1987-03-31 The Dow Chemical Company Vessel having a molten material outlet
DE3830342A1 (en) * 1988-09-07 1990-03-15 Radex Heraklith DISCONNECTED ENDSTONE
DE3843545A1 (en) * 1988-12-23 1990-06-28 Didier Werke Ag Tapping channel for metallurgical vessels
GB9108038D0 (en) * 1991-04-16 1991-06-05 Forgemaster Steels Limited Improved taphole design and method
US6663825B2 (en) 1999-07-19 2003-12-16 Louis A. Grant, Inc. Method and apparatus for installing or replacing a furnace tap hole insert
DE102004050701B3 (en) * 2004-10-18 2006-04-06 Refractory Intellectual Property Gmbh & Co. Kg Tapping tube for a metallurgical melting vessel
GB2470877B (en) * 2008-03-14 2012-08-01 Krosakiharima Corp Upper nozzle
JP2011062722A (en) * 2009-09-16 2011-03-31 Kurosaki Harima Corp Nozzle for discharging molten metal
JP5156141B1 (en) * 2012-07-13 2013-03-06 黒崎播磨株式会社 How to use the upper nozzle
JP6335052B2 (en) * 2014-07-08 2018-05-30 黒崎播磨株式会社 Steel outlet sleeve
CN110174001B (en) * 2019-06-27 2024-07-05 米易锦秀机械制造有限公司 Three-section detachable plug
CN110195982B (en) * 2019-06-27 2024-05-10 米易锦秀机械制造有限公司 Two-section detachable plug

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193365A (en) * 1937-03-31 1940-03-12 Electrochimie Electrometallurg Pouring nozzle
DE1086402B (en) * 1958-03-20 1960-08-04 Siderurgie Fse Inst Rech Drain nozzle for ladles or other metal melting vessels
AT219634B (en) * 1960-07-20 1962-02-12 Voest Ag Crucibles for performing metallurgical processes
DE1984685U (en) * 1967-11-30 1968-05-02 Hagenburger Chamotte Ton FIREPROOF SPOUT FOR POURS OD. DGL.
DE1583306A1 (en) * 1966-05-27 1970-08-06 Veitscher Magnesitwerke Ag Racking for metallurgical vessels and process for their manufacture
AT286334B (en) * 1965-08-09 1970-12-10 Gen Refractories Co Interchangeable tapping
AT326164B (en) * 1968-05-22 1975-11-25 Didier Werke Ag PROCESS FOR MANUFACTURING TAPPING CHANNELS ON METALLURGICAL VESSELS, FURNACES, ETC. AND MOLDING STONES FOR PERFORMING THE PROCEDURE
AT335492B (en) * 1973-12-20 1977-03-10 Veitscher Magnesitwerke Ag INTERCHANGEABLE GRAVING FOR A FIREPROOF Lined Keg

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1565084A (en) 1924-10-16 1925-12-08 Henry G Frerichs Article for lining tap holes of furnaces
US2286218A (en) 1941-06-25 1942-06-16 James L Martin Pouring spout
US3343827A (en) 1965-04-29 1967-09-26 Harbison Walker Refractories Taphole for a metallurgical vessel
US3463475A (en) 1967-04-21 1969-08-26 Dresser Ind Taphole construction for metallurgical vessels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193365A (en) * 1937-03-31 1940-03-12 Electrochimie Electrometallurg Pouring nozzle
DE1086402B (en) * 1958-03-20 1960-08-04 Siderurgie Fse Inst Rech Drain nozzle for ladles or other metal melting vessels
AT219634B (en) * 1960-07-20 1962-02-12 Voest Ag Crucibles for performing metallurgical processes
AT286334B (en) * 1965-08-09 1970-12-10 Gen Refractories Co Interchangeable tapping
DE1583306A1 (en) * 1966-05-27 1970-08-06 Veitscher Magnesitwerke Ag Racking for metallurgical vessels and process for their manufacture
DE1984685U (en) * 1967-11-30 1968-05-02 Hagenburger Chamotte Ton FIREPROOF SPOUT FOR POURS OD. DGL.
AT326164B (en) * 1968-05-22 1975-11-25 Didier Werke Ag PROCESS FOR MANUFACTURING TAPPING CHANNELS ON METALLURGICAL VESSELS, FURNACES, ETC. AND MOLDING STONES FOR PERFORMING THE PROCEDURE
AT335492B (en) * 1973-12-20 1977-03-10 Veitscher Magnesitwerke Ag INTERCHANGEABLE GRAVING FOR A FIREPROOF Lined Keg

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249647A1 (en) * 1986-06-18 1987-12-23 Radex West Gesellschaft mit beschränkter Haftung Fireproof tap hole
EP0561181A3 (en) * 1992-03-17 1994-02-02 Didier Werke Ag
US5310164A (en) * 1992-03-17 1994-05-10 Didier-Werke Ag Tapping pipe and system for a converter or electric arc furnace
WO2005118889A3 (en) * 2004-06-04 2006-04-06 Refractory Intellectual Prop Tapping tube
EA008914B1 (en) * 2004-06-04 2007-08-31 Рифректори Интеллектуал Проперти Гмбх & Ко.Кг Tapping tube
KR100861849B1 (en) * 2004-06-04 2008-10-07 리프랙토리 인터렉추얼 프라퍼티 게엠베하 운트 코. 카게 Tapping pipe
CN100429323C (en) * 2004-06-04 2008-10-29 里弗雷克特里知识产权两合公司 Tapping pipe
US7556765B2 (en) 2004-06-04 2009-07-07 Refractory Intellectual Property Gmbh & Co., Kg Tapping pipe
WO2017157444A1 (en) * 2016-03-17 2017-09-21 Refractory Intellectual Property Gmbh & Co. Kg Taphole assembly

Also Published As

Publication number Publication date
JPH0211651B2 (en) 1990-03-15
US4427184A (en) 1984-01-24
ES271921U (en) 1983-10-16
BR8200598A (en) 1982-12-14
EP0057946B1 (en) 1986-05-14
DK151104B (en) 1987-11-02
ZA82358B (en) 1982-12-29
DE3271083D1 (en) 1986-06-19
DK151104C (en) 1988-06-20
TR21471A (en) 1984-06-28
JPS57145919A (en) 1982-09-09
DK48182A (en) 1982-08-06
ES271921Y (en) 1984-04-16
AT387039B (en) 1988-11-25
DZ375A1 (en) 2004-09-13
DE8202727U1 (en) 1982-07-08
ATA52481A (en) 1982-05-15
CA1170450A (en) 1984-07-10

Similar Documents

Publication Publication Date Title
EP0057946A1 (en) Tapping assembly for converters
DE69112836T2 (en) SWIRL VALVE.
DE2553228A1 (en) BRAKE ACTUATING DEVICE WITH VARIABLE TRANSMISSION
DE69426635T2 (en) Winds
DE2543018C3 (en) Thread brake, especially for two-for-one twisting spindles
DE3525591A1 (en) Outlet valve for a drip-watering system
DE29717180U1 (en) Bicycle rim for smooth and stable braking by interacting with brake pads
EP0489225B1 (en) Two-for-one twisting spindle with pneumatic threading device
DE2401776A1 (en) FALSE TWIST DEVICE
DE2822582C3 (en) Coolant guide and rolling stock guide device for the intermittent cooling of rolling stock, in particular wire, fine iron or the like.
DE1291273B (en) Strand cigarette machine
DE3409179A1 (en) Yarn brake for textile machines
EP0561181A2 (en) Tap pipe for a converter or an electric arc furnace
DE4318837C2 (en) Device for triggering and interrupting the water flow from a water outlet opening
DE3504739A1 (en) Yarn brake for textile machines
DE29618541U1 (en) Cardboard spool for winding yarn with a thread holder notch
DE3923134A1 (en) Diverting flow between two channels - involves use of transition zone to produce partial flows
DE3201696A1 (en) PRESSURE GAS SPLICE HEAD
DE19626895A1 (en) Liquid distributor for a mass transfer column
DE1710660C3 (en) Twisting device in facilities for texturing thermoplastic threads or yarns
DE3140901A1 (en) Clamping device for a plate which can be displaced on a column
AT372712B (en) TEXTURING DEVICE
DE1460435C3 (en) Method and device for the continuous introduction of a liquid into a moving staple fiber strand
DE2241167C3 (en) Cutting insert for a cutting tool for machining
DE8421758U1 (en) Outlet valve for drip irrigation

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

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

17P Request for examination filed

Effective date: 19830121

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VEITSCHER MAGNESITWERKE-ACTIEN-GESELLSCHAFT

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 3271083

Country of ref document: DE

Date of ref document: 19860619

ITF It: translation for a ep patent filed
ET Fr: translation filed
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
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 82200053.5

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

Ref country code: LU

Payment date: 19981229

Year of fee payment: 18

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: 20000118

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

Ref country code: GB

Payment date: 20010102

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: 20010110

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: 20010118

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20010123

Year of fee payment: 20

Ref country code: NL

Payment date: 20010123

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20010130

Year of fee payment: 20

BE20 Be: patent expired

Free format text: 20020118 *VEITSCHER MAGNESITWERKE A.G.

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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: 20020117

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 EXPIRATION OF PROTECTION

Effective date: 20020118

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 20020117

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20020118

EUG Se: european patent has lapsed

Ref document number: 82200053.5