EP0491021B1 - Device for rapidly repairing the headplate of a blast furnace - Google Patents

Device for rapidly repairing the headplate of a blast furnace Download PDF

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Publication number
EP0491021B1
EP0491021B1 EP91912204A EP91912204A EP0491021B1 EP 0491021 B1 EP0491021 B1 EP 0491021B1 EP 91912204 A EP91912204 A EP 91912204A EP 91912204 A EP91912204 A EP 91912204A EP 0491021 B1 EP0491021 B1 EP 0491021B1
Authority
EP
European Patent Office
Prior art keywords
refractory
blast furnace
pct
ferrule
tap hole
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
EP91912204A
Other languages
German (de)
French (fr)
Other versions
EP0491021A1 (en
Inventor
Jacques Menuge
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.)
Terres Refractaires du Boulonnais Ste des
Original Assignee
Terres Refractaires du Boulonnais Ste des
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.)
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Publication date
Application filed by Terres Refractaires du Boulonnais Ste des filed Critical Terres Refractaires du Boulonnais Ste des
Publication of EP0491021A1 publication Critical patent/EP0491021A1/en
Application granted granted Critical
Publication of EP0491021B1 publication Critical patent/EP0491021B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes

Definitions

  • the present invention relates to a device for carrying out a rapid repair of the cupboard of a blast furnace at the footprint of the tap hole of this blast furnace.
  • the present invention proposes to provide means for solving the problem thus posed.
  • the present invention therefore relates to a device for ensuring rapid repair of a blast furnace cupboard at the footprint of the taphole, characterized in that it comprises on the one hand a ferrule made of material consumable intended to be fixed on the nose of the capper, by crushing on the cupboard of the blast furnace at the level of the taphole during corking and on the other hand a piece of refractory material which is preformed inside the shell so as to be crushed on the cupboard by the capper and to adhere to the surface of the cupboard thus constituting a protective refractory lining and relining.
  • the ferrule may optionally include notches intended to ensure its attachment to the nose of the capper. These notches preferably have an oblong shape.
  • the material constituting said refractory piece is a flexible material, carbonaceous and quick cooking.
  • the shell 10 is frustoconical and it is designed so as to come crashing down on the cupboard of the blast furnace at the level of the taphole during capping.
  • the shell 10 ′ has the same characteristics as those of the shell 10 but it is provided with notches such as 12, preferably having an oblong shape, as shown in the drawing, so as to ensure the fixing and blocking of the device on the nose of the capper.
  • the refractory part 14 placed in the shell 10 or 10 ′ has been shown in FIG. 3. It has a frustoconical external shape and it is provided with an axial bore as illustrated in FIG. 3.
  • This part 14 is constituted by '' a flexible, carbonated, quick-cooking refractory material. It is preformed so that it can be placed inside the shell 10 or 10 '. To this end, the values of its outside 1 and inside 2 diameters are determined so that this refractory piece 14 comes to be positioned precisely inside the shell, as shown in FIG. 4.
  • the internal walls of the bore of the refractory piece 14 have an inclination of 45 ° relative to the horizontal, as shown in FIG. 3.
  • the shell assembly 10 or 10 ′ and refractory piece 14, as illustrated in FIG. 4 is crushed on the cupboard by the capper, it thus adheres to the surface of the cupboard. stove in constituting a refractory, protective and relining coating making it possible to ensure the conservation of the area of the blast furnace refractory which is attacked at the level of the tap hole.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Blast Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Electric Stoves And Ranges (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)

Abstract

PCT No. PCT/FR91/00470 Sec. 371 Date Dec. 26, 1991 Sec. 102(e) Date Dec. 26, 1991 PCT Filed Jun. 12, 1991 PCT Pub. No. WO92/01071 PCT Pub. Date Jan. 23, 1992.A device repairs worn depressed surfaces around a tap hole opening in a blast furnace plate. The device includes a preformed frusto-conical member made of a refractory material that is flexible and rapidly baked. A ferrule is formed of frangible material and encloses the refractory member therein. The ferrule is fastened to the nose of a tap hole gun which impacts against the depressed surface thereby causing destruction of the ferrule and allowing adhering deformation of the refractory material to fill the worn depressed surface of the plate-around the tap hole.

Description

La présente invention est relative à un dispositif permettant de réaliser une réfection rapide du placard d'un haut-fourneau au niveau de l'empreinte du trou de coulée de ce haut-fourneau.The present invention relates to a device for carrying out a rapid repair of the cupboard of a blast furnace at the footprint of the tap hole of this blast furnace.

On sait que le placard d'un haut-fourneau (dénommé encore "gendarme") est soumis à une forte dégradation au niveau du trou de coulée et il est donc nécessaire d'assurer la conservation de la zone du réfractaire qui se trouve agressée au niveau du trou de coulée. La présente invention se propose d'apporter des moyens permettant de résoudre le problème ainsi posé.We know that the cupboard of a blast furnace (also called "gendarme") is subjected to a strong degradation at the level of the taphole and it is therefore necessary to ensure the conservation of the refractory zone which is attacked at level of the tap hole. The present invention proposes to provide means for solving the problem thus posed.

La présente invention a donc pour objet un dispositif permettant d'assurer une réfection rapide d'un placard de haut-fourneau au niveau de l'empreinte du trou de coulée, caractérisé en ce qu'il comporte d'une part une virole en matériau consommable destinée à être fixée sur le nez de la boucheuse, par écrasement sur le placard du haut-fourneau au niveau du trou de coulée lors du bouchage et d'autre part une pièce en matériau réfractaire qui est préformée à l'intérieur de la virole de manière à être écrasée sur le placard par la boucheuse et à adhérer à la surface du placard constituant ainsi un revêtement réfractaire protecteur et regarnisseur.The present invention therefore relates to a device for ensuring rapid repair of a blast furnace cupboard at the footprint of the taphole, characterized in that it comprises on the one hand a ferrule made of material consumable intended to be fixed on the nose of the capper, by crushing on the cupboard of the blast furnace at the level of the taphole during corking and on the other hand a piece of refractory material which is preformed inside the shell so as to be crushed on the cupboard by the capper and to adhere to the surface of the cupboard thus constituting a protective refractory lining and relining.

Selon l'invention, la virole peut éventuellement comporter des encoches destinées a assurer sa fixation sur le nez de la boucheuse. Ces encoches ont de préférence une forme oblongue.According to the invention, the ferrule may optionally include notches intended to ensure its attachment to the nose of the capper. These notches preferably have an oblong shape.

Selon la présente invention, le matériau constituant ladite pièce réfractaire est un matériau souple, carboné et à cuisson rapide.According to the present invention, the material constituting said refractory piece is a flexible material, carbonaceous and quick cooking.

D autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après en reférence aux dessins annexés qui en illustrent deux modes de réalisation donnés à titre d'exemples dépourvus de tout caractère limitatif. Sur les dessins :

  • la figure 1 est une vue en élévation latérale d un premier exemple de réalisation d'une virole faisant partie du dispositif selon la présente invention ;
  • la figure 2 est une vue similaire à la figure 1 illustrant un second exemple de réalisation de la virole du dispositif objet de l'invention ;
  • la figure 3 est une vue en coupe axiale verticale du matériau réfractaire placé dans la virole du dispositif selon l'invention et ;
  • la figure 4 est une vue en coupe axiale verticale du dispositif selon l'invention comportant le mode de réalisation de la virole illustré par la figure 1.
Other characteristics and advantages of the present invention will emerge from the description given below with reference to the appended drawings which illustrate two embodiments given by way of examples without any limiting character. In the drawings:
  • Figure 1 is a side elevational view of a first embodiment of a ferrule forming part of the device according to the present invention;
  • Figure 2 is a view similar to Figure 1 illustrating a second embodiment of the shell of the device object of the invention;
  • Figure 3 is a vertical axial sectional view of the refractory material placed in the shell of the device according to the invention and;
  • FIG. 4 is a view in vertical axial section of the device according to the invention comprising the embodiment of the shell illustrated in FIG. 1.

Ainsi qu'on l'a défini ci-dessus, le dispositif objet de la présente invention est conçu de façon à assurer une réfection rapide du placard d'un haut-fourneau au niveau de l'empreinte du trou de coulée de ce dernier. Ce dispositif comprend essentiellement deux parties :

  • d'une part une virole en matériau consommable dont deux exemples de réalisation sont représentés sur les figures 1 et 2 et ;
  • d'autre part une pièce en un matériau réfractaire positionnée dans la virole et qui a été représentée sur la figure 3.
As defined above, the device which is the subject of the present invention is designed so as to ensure rapid repair of the cupboard of a blast furnace at the level of the imprint of the tap hole of the latter. This device essentially comprises two parts:
  • on the one hand, a ferrule made of consumable material, two embodiments of which are shown in FIGS. 1 and 2 and;
  • on the other hand, a part made of a refractory material positioned in the shell and which has been shown in FIG. 3.

Dans le premier exemple de réalisation illustré par la figure 1, la virole 10 est tronconique et elle est conçue de façon à venir s'écraser sur le placard du haut-fourneau au niveau du trou de coulée lors du bouchage. Dans le second exemple de réalisation représenté sur la figure 2, la virole 10' présente les mêmes caractéristiques que celles de la virole 10 mais elle est pourvue d'encoches telles que 12, présentant de préférence une forme oblongue, comme représenté sur le dessin, de manière à assurer la fixation et le blocage du dispositif sur le nez de la boucheuse.In the first exemplary embodiment illustrated by FIG. 1, the shell 10 is frustoconical and it is designed so as to come crashing down on the cupboard of the blast furnace at the level of the taphole during capping. In the second example of embodiment shown in FIG. 2, the shell 10 ′ has the same characteristics as those of the shell 10 but it is provided with notches such as 12, preferably having an oblong shape, as shown in the drawing, so as to ensure the fixing and blocking of the device on the nose of the capper.

La pièce réfractaire 14 placée dans la virole 10 ou 10' a eté représentée sur la figure 3. Elle présente une forme extérieure tronconique et elle est munie d'un alésage axial de la manière illustrée par la figure 3. Cette pièce 14 est constituée d'un matériau réfractaire souple, carboné, à cuisson rapide. Elle est préformée de manière à pouvoir être placée à l'intérieur de la virole 10 ou 10'. A cet effet, les valeurs de ses diamètres extérieur 1 et intérieur 2 sont déterminées de manière que cette pièce réfractaire 14 vienne se positionner de façon précise à l'intérieur de la virole, comme on l'a représenté sur la figure 4. De préférence, les parois internes de l'alésage de la pièce réfractaire 14 présentent une inclinaison de 45° par rapport à l'horizontale, comme on l'a représenté sur la figure 3.The refractory part 14 placed in the shell 10 or 10 ′ has been shown in FIG. 3. It has a frustoconical external shape and it is provided with an axial bore as illustrated in FIG. 3. This part 14 is constituted by '' a flexible, carbonated, quick-cooking refractory material. It is preformed so that it can be placed inside the shell 10 or 10 '. To this end, the values of its outside 1 and inside 2 diameters are determined so that this refractory piece 14 comes to be positioned precisely inside the shell, as shown in FIG. 4. Preferably , the internal walls of the bore of the refractory piece 14 have an inclination of 45 ° relative to the horizontal, as shown in FIG. 3.

Comme on l'a précisé ci-dessus, l ensemble virole 10 ou 10' et pièce réfractaire 14, tel qu'illustré par la figure 4 est écrasé sur le placard par la boucheuse, il adhère ainsi à la surface du placard de haut-fourneau en constituant un revêtement réfractaire, protecteur et regarnisseur permettant d'assurer la conservation de la zone du réfractaire de haut-fourneau qui est agressée au niveau du trou de coulée.As specified above, the shell assembly 10 or 10 ′ and refractory piece 14, as illustrated in FIG. 4, is crushed on the cupboard by the capper, it thus adheres to the surface of the cupboard. stove in constituting a refractory, protective and relining coating making it possible to ensure the conservation of the area of the blast furnace refractory which is attacked at the level of the tap hole.

Claims (4)

  1. Device permitting rapid repair to a blast furnace lining at the level of the impression of the taphole, characterized in that it comprises, on the one hand, a collar (10, 10') of consumable material intended to be fixed to the nose of the plug, by crushing onto the lining of the blast furnace at the level of the taphole during plugging and, on the other hand, a piece (14) of refractory material which is preshaped to the interior of the collar so as to be crushed onto the furnace lining by the plug and to adhere to the surface of the lining, thus constituting a refractory, protective and relining facing.
  2. Device according to Claim 1, characterized in that the collar (10') may comprise slots (12) intended for ensuring its fixing onto the nose of the plug.
  3. Device according to Claim 2, characterized in that said slots (12) have an oblong shape.
  4. Device according to any one of the preceding Claims, characterized in that the material constituting said refractory piece (14) is a flexible, carbonaceous, rapid-baking material.
EP91912204A 1990-07-05 1991-06-12 Device for rapidly repairing the headplate of a blast furnace Expired - Lifetime EP0491021B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9008557 1990-07-05
FR9008557A FR2664291B1 (en) 1990-07-05 1990-07-05 DEVICE FOR THE RAPID REPAIR OF A BLAST FURNACE CUPBOARD.
PCT/FR1991/000470 WO1992001071A1 (en) 1990-07-05 1991-06-12 Device for rapidly repairing the headplate of a blast furnace

Publications (2)

Publication Number Publication Date
EP0491021A1 EP0491021A1 (en) 1992-06-24
EP0491021B1 true EP0491021B1 (en) 1994-11-30

Family

ID=9398403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91912204A Expired - Lifetime EP0491021B1 (en) 1990-07-05 1991-06-12 Device for rapidly repairing the headplate of a blast furnace

Country Status (11)

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US (1) US5249959A (en)
EP (1) EP0491021B1 (en)
JP (1) JPH05502913A (en)
AT (1) ATE114728T1 (en)
AU (1) AU641786B2 (en)
BR (1) BR9105801A (en)
CA (1) CA2059653A1 (en)
DE (1) DE69105468T2 (en)
ES (1) ES2065044T3 (en)
FR (1) FR2664291B1 (en)
WO (1) WO1992001071A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2197738B1 (en) * 2001-02-15 2005-03-16 Productos Refractarios Asturianos Para La Siderurgia, S.A. SYSTEM FOR REPAIRING THE FRONT PIQUERA IN HIGH OVEN.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH522413A (en) * 1968-04-04 1972-06-30 Contraves Ag Cellular structured plastic core for composite construction skis and process for their production
DE2510948A1 (en) * 1975-03-13 1976-09-23 Dango & Dienenthal Kg Tap hole gun for shaft furnaces - with steering device to accommodate irregular tap holes
JPS579809A (en) * 1980-06-18 1982-01-19 Nippon Kokan Kk <Nkk> Formation of frame part of iron notch of blast furnace
NL8301862A (en) * 1983-05-26 1984-12-17 Hoogovens Groep Bv TAPGAT CONSTRUCTION IN THE FIRE OF A SHAFT OVEN.
JPH0610294B2 (en) * 1986-01-09 1994-02-09 新日本製鐵株式会社 Blast furnace tap hole life extension method
DD258721A3 (en) * 1986-03-26 1988-08-03 Funk A Bergbau Huettenkombinat METHOD AND DEVICE FOR CLOSING A STITCH OPENING
NL8702891A (en) * 1987-12-02 1989-07-03 Hoogovens Groep Bv METHOD FOR REPAIRING THE FIRE-RESISTANT COATING OF THE WALL OF A SHAFT OVEN, AND SHAFT OVEN REPAIRED BY THIS METHOD
DE3803625A1 (en) * 1988-02-06 1989-08-17 Dango & Dienenthal Maschbau METHOD AND DEVICE FOR OPENING THE STITCH HOLE OF OEFEN
NL8902381A (en) * 1989-09-25 1991-04-16 Hoogovens Groep Bv SHAFT OVEN.

Also Published As

Publication number Publication date
ES2065044T3 (en) 1995-02-01
US5249959A (en) 1993-10-05
EP0491021A1 (en) 1992-06-24
DE69105468T2 (en) 1995-05-04
FR2664291B1 (en) 1992-09-18
FR2664291A1 (en) 1992-01-10
ATE114728T1 (en) 1994-12-15
CA2059653A1 (en) 1992-01-06
DE69105468D1 (en) 1995-01-12
JPH05502913A (en) 1993-05-20
WO1992001071A1 (en) 1992-01-23
AU641786B2 (en) 1993-09-30
AU8052991A (en) 1992-02-04
BR9105801A (en) 1992-09-29

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