EP1233077A1 - Reparatursystem der Auskleidung einer Hochofenabstichöffnung - Google Patents
Reparatursystem der Auskleidung einer Hochofenabstichöffnung Download PDFInfo
- Publication number
- EP1233077A1 EP1233077A1 EP02380017A EP02380017A EP1233077A1 EP 1233077 A1 EP1233077 A1 EP 1233077A1 EP 02380017 A EP02380017 A EP 02380017A EP 02380017 A EP02380017 A EP 02380017A EP 1233077 A1 EP1233077 A1 EP 1233077A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- taphole
- gun
- nozzle
- sleeve
- stopper
- 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
Links
Images
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
- This invention refers to a new system for repairing the facings of blast furnace tapholes, with which is possible to lengthen the useful life of the taphole, especially in view of the continuous use of the hot bar technique, furthermore allowing that repairs can be carried out without the need for stopping the installation.
- a blast furnace is a vertical reactor that is loaded through its upper part or mouth with a series of minerals and solid fuels, so that with the injection of hot air and additional fuel, gas, coal, etc., a reduction reaction is obtained that gives rise to pig iron, the fundamental prime material for obtaining the different types of steels, foundry products, etc.
- This reactor is emptied by means of an outlet located in its lower part, called a taphole, with a diameter of the order of 30 to 60 millimetres and with a length generally between 1 and 3 metres, depending on the type of blast furnace, a taphole through which the pig iron and slag leave and that is one of the critical parts in the operation of a blast furnace.
- a machine similar to a drill of large dimensions that uses as a bit a bar of approximately three meters length that works simultaneously turning and hammering, axially perforated to refrigerate the cutting head, whether with water, compressed air, or nitrogen, etc.
- a machine called a taphole stopper gun is used that consists of a hydraulic system with a pressure of up to 400 Kg/cm 2 , that, using a piston and a plunger, injects the taphole material to close the hole made by the bit during the opening.
- the hot bar system consists of inserting a solid bar once in the taphole once the material has been injected with the gun and before the material hardens, with the purpose of later taking it out and that the pig iron and the slag come out through the space left by the extraction of this bar.
- This system has the drawback that the mass of material has to be sufficiently hard to tolerate the pressure of the interior of the blast furnace, up to 4 Kg/cm 2 , to avoid that this material be expelled to the exterior, and sufficiently soft that it allows the bar to enter and afterwards to be withdrawn. Meanwhile the drilling method doesn't have operational problems, but it is a more expensive and less effective system that the hot bar method, because of which there is a tendency to use the most efficient method provided the working conditions of the installation and the material used are adequate.
- the objective is to set a series of parameters, such as:
- the hot bar system furthermore has the drawback of progressively causing damage to the facing of the blast furnace taphole, a facing on which the taphole stopper gun does the closing and that has the following as its main functions:
- the system is based on equipping the gun nozzle with a sleeve perfectly adjusted to this nozzle, that forms an axial and frontal extension for it and in whose cavity is housed a ring of refractory material, that in the connecting of the gun to the taphole face fills the existing hollow in this face, caused by wear in the normal use of the taphole, so that this ring, of an external diameter the same as the internal diameter of the sleeve, will adapt a variable position, according to requirements determined by the depth of taphole facing wear.
- the sleeve will be equipped with complementary external limit stops, beside its front end, that in the joining of the taphole stopper gun with the face of the taphole, on impacting on it, will cause the retraction of this sleeve with respect to the nozzle, while the latter advances to the taphole and introduces the refractory ring in its wear depression, where it remains definitively fixed to the plugging material of the oft-mentioned furnace taphole.
- the ring (12) allowing the passing of the blocking material through it, reaches the interior of the opening(9) of the taphole where it remains freed by the retraction of the sleeve (11) to which effect this latter has limit stops (13), radial and external, touching against the face (8) of the taphole, as seen especially in figure 3, so that the material supplied by the gun (7) doesn't only block the taphole opening (5) but also fills the gaps established between the deteriorated face of the taphole and the refractory ring (12), the latter remaining fixed and integrated in the taphole, so that the face of the taphole (8) remains automatically ready and in optimum conditions if a ring of adequate size (12) has been used, as shown in figure 4.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200100338A ES2197738B1 (es) | 2001-02-15 | 2001-02-15 | Sistema para reparar los frontales de piquera en alto horno. |
ES200100338 | 2001-02-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1233077A1 true EP1233077A1 (de) | 2002-08-21 |
EP1233077B1 EP1233077B1 (de) | 2006-04-05 |
Family
ID=8496737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020380017 Expired - Lifetime EP1233077B1 (de) | 2001-02-15 | 2002-01-29 | Reparaturvorrichtung der Auskleidung einer Hochofenabstichöffnung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1233077B1 (de) |
DE (1) | DE60210357D1 (de) |
ES (1) | ES2197738B1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007034974A1 (en) * | 2005-09-26 | 2007-03-29 | Nippon Steel Corporation | Method of injecting an aggregate into a small gap formed in the bottom portion of a blast furnace and aggregate used therefor |
CN103966375A (zh) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | 一种高炉泥套的修补方法及辅助装置 |
US10933612B2 (en) | 2015-04-10 | 2021-03-02 | Sekisui Chemical Co., Ltd. | Interlayer for laminated glass, laminated glass, production method for embossing roll, and production method for interlayer for laminated glass |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0315311A1 (de) * | 1987-10-16 | 1989-05-10 | Foseco International Limited | Verfahren und Vorrichtung zum Verschliessen des Abstichloches eines metallurgischen Gefässes |
US4909487A (en) * | 1988-02-03 | 1990-03-20 | Dango & Dienenthal Maschinenbau Gmbh | Process and notch gun for closing the tapholes of furnaces |
FR2680179A1 (fr) * | 1991-08-07 | 1993-02-12 | Boulonnais Terres Refractaires | Perfectionnements apportes aux dispositifs de bouchage de trous de coulee de hauts-fourneaux. |
DE19755932C1 (de) * | 1997-12-17 | 1998-12-10 | Dango & Dienenthal Maschbau | Stichlochstopfmaschine für metallurgische Öfen |
EP1069191A1 (de) * | 1999-07-07 | 2001-01-17 | Von Roll Umwelttechnik AG | Abstichvorrichtung sowie Abstichverfahren |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2664291B1 (fr) * | 1990-07-05 | 1992-09-18 | Boulonnais Terres Refractaires | Dispositif pour la refection rapide d'un placard de haut-fourneau. |
-
2001
- 2001-02-15 ES ES200100338A patent/ES2197738B1/es not_active Expired - Fee Related
-
2002
- 2002-01-29 EP EP20020380017 patent/EP1233077B1/de not_active Expired - Lifetime
- 2002-01-29 DE DE60210357T patent/DE60210357D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0315311A1 (de) * | 1987-10-16 | 1989-05-10 | Foseco International Limited | Verfahren und Vorrichtung zum Verschliessen des Abstichloches eines metallurgischen Gefässes |
US4909487A (en) * | 1988-02-03 | 1990-03-20 | Dango & Dienenthal Maschinenbau Gmbh | Process and notch gun for closing the tapholes of furnaces |
FR2680179A1 (fr) * | 1991-08-07 | 1993-02-12 | Boulonnais Terres Refractaires | Perfectionnements apportes aux dispositifs de bouchage de trous de coulee de hauts-fourneaux. |
DE19755932C1 (de) * | 1997-12-17 | 1998-12-10 | Dango & Dienenthal Maschbau | Stichlochstopfmaschine für metallurgische Öfen |
EP1069191A1 (de) * | 1999-07-07 | 2001-01-17 | Von Roll Umwelttechnik AG | Abstichvorrichtung sowie Abstichverfahren |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007034974A1 (en) * | 2005-09-26 | 2007-03-29 | Nippon Steel Corporation | Method of injecting an aggregate into a small gap formed in the bottom portion of a blast furnace and aggregate used therefor |
CN103966375A (zh) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | 一种高炉泥套的修补方法及辅助装置 |
CN103966375B (zh) * | 2014-04-21 | 2017-09-12 | 鞍钢股份有限公司 | 一种高炉泥套的修补方法及辅助装置 |
US10933612B2 (en) | 2015-04-10 | 2021-03-02 | Sekisui Chemical Co., Ltd. | Interlayer for laminated glass, laminated glass, production method for embossing roll, and production method for interlayer for laminated glass |
US11318718B2 (en) | 2015-04-10 | 2022-05-03 | Sekisui Chemical Co., Ltd. | Interlayer for laminated glass, laminated glass, production method for embossing roll, and production method for interlayer for laminated glass |
Also Published As
Publication number | Publication date |
---|---|
EP1233077B1 (de) | 2006-04-05 |
DE60210357D1 (de) | 2006-05-18 |
ES2197738B1 (es) | 2005-03-16 |
ES2197738A1 (es) | 2004-01-01 |
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