EP0065943B1 - Schnelles Stichlochbohrverfahren, welches die feuerfeste Auskleidung an der Innenwandung eines Loches mit grossem Durchmesser ermöglicht - Google Patents

Schnelles Stichlochbohrverfahren, welches die feuerfeste Auskleidung an der Innenwandung eines Loches mit grossem Durchmesser ermöglicht Download PDF

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Publication number
EP0065943B1
EP0065943B1 EP82870026A EP82870026A EP0065943B1 EP 0065943 B1 EP0065943 B1 EP 0065943B1 EP 82870026 A EP82870026 A EP 82870026A EP 82870026 A EP82870026 A EP 82870026A EP 0065943 B1 EP0065943 B1 EP 0065943B1
Authority
EP
European Patent Office
Prior art keywords
lining
refractory
tap hole
hole
refractory lining
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
Application number
EP82870026A
Other languages
English (en)
French (fr)
Other versions
EP0065943A1 (de
Inventor
Joseph Sante Zorzi
Jacques Auguste Edmond Brihay
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.)
Sprl J Brihay
ArcelorMittal Liege Upstream SA
Original Assignee
Sprl J Brihay
Cockerill Sambre SA
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
Priority claimed from BE0/204846A external-priority patent/BE888881A/fr
Application filed by Sprl J Brihay, Cockerill Sambre SA filed Critical Sprl J Brihay
Priority to AT82870026T priority Critical patent/ATE22703T1/de
Publication of EP0065943A1 publication Critical patent/EP0065943A1/de
Application granted granted Critical
Publication of EP0065943B1 publication Critical patent/EP0065943B1/de
Expired legal-status Critical Current

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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
    • F27D3/1518—Tapholes

Definitions

  • the present invention relates to a new method for producing the refractory lining inside a large diameter hole of a metallurgical container.
  • the internal coating of the taphole of a metallurgical vessel consists of juxtaposed refractory ferrules, leaning against refractory bricks of suitable shapes such as illustrated in FIG. 1.
  • the reference 1 designates the taphole of a converter after masonry
  • the reference 2 designates the ferrules as refractories
  • the reference 3 designates the refractory bricks of appropriate shapes.
  • the conventional technique for making this internal coating of the taphole consists in preassembling the ferrules 2 and the refractory bricks 3 out of the metallurgical container, then placing them in the metallurgical container and masonrying it in the internal refractory lining itself .
  • This technique requires cutting a large number of bricks 5 at the tap hole.
  • This conventional technique has the disadvantage of requiring a lot of manpower and time.
  • the subject of the invention is a new method for making the interior lining of a large diameter taphole, which is faster than the conventional method and which requires less labor.
  • Another object of the invention is an internal tap hole coating which has better strength qualities than the traditional coating.
  • the interior refractory lining of the metallurgical container is produced at least up to the part situated at the upper level of the future tap hole, then a hole is drilled in the solid of the refractory lining located at the location of the future tap hole. Thanks to a centering system, internal ferrules are then put in place in the cored hole and clay of sufficient refractoriness is introduced into the space between the external surface of the ferrules and the wall of the cored hole.
  • a metal lining is placed inside the outer shell to serve as a guide for a corer and, after coring, this metallic guide lining is removed and replaced by an adequate refractory brickwork.
  • the inner coating 13 of the converter is then produced (FIG. 3).
  • the block 14 of the inner lining is advantageously made beforehand by bonding refractory bricks, preferably bricks of the S-brick type.
  • the bonding of the bricks must be carried out with care to avoid the risk of dislocation of the bricks during the coring operation. and thereby obtaining a non-conforming hole.
  • the use of S bricks also makes it possible to reduce the risks of cracking of the brick block 14.
  • the coring operation of the refractory block 14 is carried out using a core barrel 15 of known type using the metal trim 11 as a guide. This operation can be carried out in a short time depending on the thickness of the coating to be cored.
  • the metal guide lining 11 is then removed which is replaced by an adequate refractory brickwork 12 (FIG. 5).
  • the interior ferrules 16 are then placed after having put in place an appropriate centering system, and then sufficient refractory clay 17 (FIG. 6) is introduced into the space between the exterior surface. ferrules 16 and the wall 18 of the cored hole. This simple and rapid process allows, among other things, not to slow down the mechanized masonry of the interior lining of the converters.
  • the coating produced by the invention is characterized by the fact that it is not necessary to use a mother brick of adequate external shape to fit into the coating of the metallurgical vessel and of adequate interior shape to allow the reception of the ferrules intended to form the final tap hole. Also, by the fact that the qualities of resistance of the conventional coating are maintained despite the appreciable saving of time.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)

Claims (6)

1. Verfahren zur Herstellung der inneren Auskleidung des Stichloches eines metallurgischen Gefässes, hauptsächlich dort, wo der Durchmesser des Stichloches sehr gross ist und z.B. 300 mm überschreitet, gekennzeichnet durch die folgenden Schritte:
(a) Herstellen der inneren feuerfesten Auskleidung (13) des metallurgischen Gefässes mindestens bis zu dem am oberen Niveau des zukünftigen Stichloches gelegenen Bereich,
(b) Kernbohren eines Loches (1) in das an der Stelle des zukünftigen Stichloches gelegene Material (14) der genannten feuerfesten Auskleidung,
(c) Einsetzen von Innenringen (16) in das Bohrloch (1) mit Hilfe eines Zentriersystems, und
(d) Einführen von ausreichend feuerfester Stampfmasse (17) in den Raum zwischen der Aussenfläche der Ringe (16) und der Wand (18) des Bohrloches (1).
2. Verfahren nach Anspruch 1, angewendet auf einen Stahlkonverter mit einem Aussenring (10), dadurch gekennzeichnet, dass in das Innere des Aussenringes (10) eine Metallpackung (11) als Führung für einen Kernbohrer (15) eingesetzt wird, und dass nach dem Kernbohren die als Führung dienende Metallpackung (11) entfernt und durch ein geeignetes feuerfestes Mauerwerk (12) ersetzt wird.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass während des Schrittes der Herstellung der inneren feuerfesten Auskleidung das in Nachbarschaft des zukünftigen Stichloches (1) gelegene feuerfeste Material (14) mit Hilfe geklebter Steine gebildet wird.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass während des Schrittes der Herstellung der inneren feuerfesten Auskleidung, das in Nachbarschaft des zukünftigen Stichloches (1) gelegene feuerfeste Material (14) aus feuerfesten Steinen mit S-Profil gebildet wird.
5. Metallurgisches Gefäss mit einer inneren feuerfesten Auskleidung (13, 14) und einem Stichloch (1), dadurch gekennzeichnet, dass das Stichloch mit einer Auskleidung versehen ist, die aus einer von Ringen (16) gebildeten inneren Schicht, einer von ausreichend feuerfester Stampfmasse gebildeten Zwischenschicht (17) und einer aus Ziegeln des feuerfesten Materials (14) selbst gebildeten äusseren Schicht besteht, wobei das Stichloch direkt in die genannte innere Auskleidung des metallurgischen Gefässes gebohrt ist, um die Verwendung von zugerichteten feuerfesten Steinen zu vermeiden.
6. Stahlkonverter mit einer inneren feuerfesten Auskleidung (13), einem die innere feuerfeste Auskleidung (13) durchsetzenden Stichloch (1) und einem innen mit feuerfestem Mauerwerk (12) ausgekleideten Aussenring (10), der den aussenliegenden Teil des Stichloches (1) umgibt, dadurch gekennzeichnet, dass das Stichloch innen mit einer Auskleidung versehen ist, die aus einer von Innenringen (16) gebildeten inneren Schicht, einer von ausreichend feuerfester Stampfmasse gebildeten Zwischenschicht (17) und einer äusseren Schicht besteht, die in ihrem das feuerfeste Material (14) durchsetzenden Teil aus Steinen dieses Materials selbst und in ihrem im Inneren des Aussenringes (10) gelegenen Teil aus dem genannten feuerfesten Mauerwerk (12) innerhalb des Aussenringes (10) besteht, wobei das Stichloch direkt in die genannte innere Auskleidung des metallurgischen Gefässes gebohrt ist, um die Verwendung von zugerichteten feuerfesten Steinen zu vermeiden.
EP82870026A 1981-05-20 1982-05-19 Schnelles Stichlochbohrverfahren, welches die feuerfeste Auskleidung an der Innenwandung eines Loches mit grossem Durchmesser ermöglicht Expired EP0065943B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82870026T ATE22703T1 (de) 1981-05-20 1982-05-19 Schnelles stichlochbohrverfahren, welches die feuerfeste auskleidung an der innenwandung eines loches mit grossem durchmesser ermoeglicht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE204846 1981-05-20
BE0/204846A BE888881A (fr) 1981-05-20 1981-05-20 Procede de carottage rapide permettant la realisation du revetement refractaire a l'interieur d'un trou de grand diametre

Publications (2)

Publication Number Publication Date
EP0065943A1 EP0065943A1 (de) 1982-12-01
EP0065943B1 true EP0065943B1 (de) 1986-10-08

Family

ID=3843430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82870026A Expired EP0065943B1 (de) 1981-05-20 1982-05-19 Schnelles Stichlochbohrverfahren, welches die feuerfeste Auskleidung an der Innenwandung eines Loches mit grossem Durchmesser ermöglicht

Country Status (3)

Country Link
EP (1) EP0065943B1 (de)
AT (1) ATE22703T1 (de)
DE (1) DE3273634D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408964B (de) * 1997-12-02 2002-04-25 Boehler Pneumatik Internat Gmb Verfahren und vorrichtung zur erneuerung der auskleidung einer abstichöffnung von metallurgischen gefässen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2214459C1 (ru) * 2002-04-15 2003-10-20 ОАО "Нижнетагильский металлургический комбинат" Способ торкретирования сталевыпускного отверстия металлургического агрегата

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705630A (en) * 1955-04-05 Tad deo
FR1488906A (fr) * 1966-08-09 1967-07-13 Gen Refractories Co Agencements de trous de coulée
US3635459A (en) * 1968-02-29 1972-01-18 Arrigo Mare Refractory brick having oblique surface
DE6608495U (de) * 1968-05-22 1971-09-09 Didier Werke Ag Rohrfoermiger formstein fuer abstichkanaele an metallurgischen gefaessen, oefen u. dgl.
AT335492B (de) * 1973-12-20 1977-03-10 Veitscher Magnesitwerke Ag Auswechselbarer abstich fur ein feuerfest ausgekleidetes gefass
LU77507A1 (de) * 1977-06-08 1977-09-19
BE875809A (fr) * 1979-04-24 1979-08-16 Cockerill Brique pour le revetement refractaire d'un recipient metallurgique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408964B (de) * 1997-12-02 2002-04-25 Boehler Pneumatik Internat Gmb Verfahren und vorrichtung zur erneuerung der auskleidung einer abstichöffnung von metallurgischen gefässen

Also Published As

Publication number Publication date
ATE22703T1 (de) 1986-10-15
EP0065943A1 (de) 1982-12-01
DE3273634D1 (en) 1986-11-13

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