EP1233077B1 - Dispositif de réparation du revêtement d'un trou de coulée d'un haut fourneau - Google Patents

Dispositif de réparation du revêtement d'un trou de coulée d'un haut fourneau Download PDF

Info

Publication number
EP1233077B1
EP1233077B1 EP02380017A EP02380017A EP1233077B1 EP 1233077 B1 EP1233077 B1 EP 1233077B1 EP 02380017 A EP02380017 A EP 02380017A EP 02380017 A EP02380017 A EP 02380017A EP 1233077 B1 EP1233077 B1 EP 1233077B1
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.)
Expired - Lifetime
Application number
EP02380017A
Other languages
German (de)
English (en)
Other versions
EP1233077A1 (fr
Inventor
Emilio Martinez De Valverde
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.)
Productos Refractarios Asturianos Para La Siderurg IA SA
Original Assignee
Productos Refractarios Asturianos Para La Siderurg IA 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
Application filed by Productos Refractarios Asturianos Para La Siderurg IA SA filed Critical Productos Refractarios Asturianos Para La Siderurg IA SA
Publication of EP1233077A1 publication Critical patent/EP1233077A1/fr
Application granted granted Critical
Publication of EP1233077B1 publication Critical patent/EP1233077B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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 it 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:
  • Document DE19755932C refers to a tapping hole plugging machine for metallurgical furnaces that incorporates a plugging gun provided with a pressure cylinder and a plugging piston for pressing the plug material out of a nozzle of the pressure cylinder, the machine further comprising an end piece which is slidable relative to the nozzle and which is pressed on the furnace wall in the tapping hole zone for sealing purposes.
  • 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)

Claims (2)

  1. Système de réparation des revêtements d'un trou de coulée de haut-fourneau, qui a pour but le remplissage avec de la matière de réfraction ou similaire du creux (9) qui se forme progressivement dans la face (8) du trou de coulée (5), à cause de l'effet de l'action d'un canon de bouchon de trou de coulée (7) sur ce revêtement lors des opérations de verrouillage du trou de coulée (7), ledit canon de bouchon de trou de coulée étant équipé d'une buse (10), caractérisé en ce qu'il incorpore une extension axiale de cette buse (10) consistant en une chemise (11), rétractile sur soi même et pourvue de butées de limite course externes (13) destinées à agir sur la face (8) du trou de coulée (5) provoquant l'immobilisation de la chemise (11) pendant la phase finale d'avancée de la buse (10) du canon de bouchon de trou de coulée (7), la chemise (11) maintenant une bague réfractaire (12), dans une position avant de la chemise (11) par rapport à la buse (10), qui s'introduit par la buse (10) à l'intérieur de l'ouverture (9) du trou de coulée (5), la bague réfractaire (12) permettant également le passage à travers elle de la matière fournie par le canon (7) et qui demeure intégrée dans le creux d'usure de revêtement (9) du trou de coulée (5) par la même masse de matière de fermeture pourvue par le canon de bouchon de trou de coulée (7).
  2. Système de réparation des revêtements de trou de coulée de haut-fourneaux, selon la revendication 1, caractérisé en ce que la chemise (11) a un diamètre interne similaire au diamètre externe de la buse (10) du canon de bouchon de trou de coulée (7), pour glisser adéquatement sur celui-ci, tandis que la bague réfractaire (12) a, à son tour, un diamètre externe similaire au diamètre interne de la chemise (11), et une dimension axiale variable selon la quantité d'usure du revêtement de trou de coulée, qui est en accord à la profondeur du creux d'usure (9).
EP02380017A 2001-02-15 2002-01-29 Dispositif de réparation du revêtement d'un trou de coulée d'un haut fourneau Expired - Lifetime EP1233077B1 (fr)

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 EP1233077A1 (fr) 2002-08-21
EP1233077B1 true EP1233077B1 (fr) 2006-04-05

Family

ID=8496737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02380017A Expired - Lifetime EP1233077B1 (fr) 2001-02-15 2002-01-29 Dispositif de réparation du revêtement d'un trou de coulée d'un haut fourneau

Country Status (3)

Country Link
EP (1) EP1233077B1 (fr)
DE (1) DE60210357D1 (fr)
ES (1) ES2197738B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4823626B2 (ja) * 2005-09-26 2011-11-24 新日本製鐵株式会社 高炉炉底極小空隙への骨材圧入方法
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
JP6815865B2 (ja) 2015-04-10 2021-01-20 積水化学工業株式会社 合わせガラス用中間膜、合わせガラス、エンボスロールの製造方法及び合わせガラス用中間膜の製造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828226A (en) * 1987-10-16 1989-05-09 Foseco International Limited Tap hole plugs for metallurgical vessels
DE3803132A1 (de) * 1988-02-03 1989-08-17 Dango & Dienenthal Maschbau Verfahren und stopfkanone zum schliessen des stichlochs von oefen
FR2664291B1 (fr) * 1990-07-05 1992-09-18 Boulonnais Terres Refractaires Dispositif pour la refection rapide d'un placard de haut-fourneau.
FR2680179B1 (fr) * 1991-08-07 1994-10-21 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
DE50011237D1 (de) * 1999-07-07 2005-11-03 Von Roll Umwelttechnik Ag Abstichvorrichtung sowie Abstichverfahren

Also Published As

Publication number Publication date
EP1233077A1 (fr) 2002-08-21
DE60210357D1 (de) 2006-05-18
ES2197738A1 (es) 2004-01-01
ES2197738B1 (es) 2005-03-16

Similar Documents

Publication Publication Date Title
KR102587684B1 (ko) 로저의 승온 방법 및 그것에 이용하는 버너 랜스
CN110643768B (zh) 一种高炉新投铁口深度控制方法
EP1233077B1 (fr) Dispositif de réparation du revêtement d'un trou de coulée d'un haut fourneau
EP0914473B1 (fr) Machine foreuse de trous de coulee pour haut fourneau, foret a utiliser dans cette machine foreuse de trous de coulee, et procede de forage de trous de coulee
EP3080536B1 (fr) Remise à neuf d'un trou de coulée
US4909487A (en) Process and notch gun for closing the tapholes of furnaces
CN110004260A (zh) 一种铁口泥套整体解决方案
CN107249785A (zh) 密封并修复耐火排出孔的方法
KR20020048161A (ko) 출선구 보호벽 형성장치
JPS61130778A (ja) 炉の湯出し口を開きかつ閉じるための方法および装置
CN116287517B (zh) 欧冶炉全氧冶炼铁水的高温熔融渣铁排口及出渣方法
KR101235550B1 (ko) 고로 거친 출선 억제 방법
JP2001342508A (ja) 高炉送風羽口の開孔装置およびその方法
KR200224581Y1 (ko) 고로의 출선구 노저부 승온 억제장치
CN111607674A (zh) 一种促使高炉炉缸快速升温的方法及装置
CN104043815A (zh) 一种钢包工作衬的钻孔填充维修方法
JP7493413B2 (ja) 溶融金属用鍋内の固化金属塊を分離する固化金属塊分離方法
JP2011074462A (ja) ステーブクーラの撤去方法
JPS6126709A (ja) 出銑孔の閉塞方法
KR100399820B1 (ko) 고로 출선구 내화물 축조 및 보수 방법
KR100862036B1 (ko) 고로 출선구의 내부 균열 충전방법
KR100432130B1 (ko) 풍구 내경 차단판 및 해머 건을 이용한 내화물 파쇄장치
WO2016131090A1 (fr) Entretien de lance d'injection et de système de transport de matières solides sans écumoire
KR100862833B1 (ko) 용광로 출선구의 보수를 위한 출선구 냉각장치
KR100822971B1 (ko) 보조재를 이용한 용광로의 출선구 폐쇄방법

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 CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

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

17P Request for examination filed

Effective date: 20021230

AKX Designation fees paid

Designated state(s): BE DE FR GB IT

17Q First examination report despatched

Effective date: 20030520

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: APPARATUS FOR REPAIRING BLAST FURNACE TAPHOLE FACINGS

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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

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

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 PRE;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.SCRIBED TIME-LIMIT

Effective date: 20060405

Ref country code: BE

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: 20060405

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60210357

Country of ref document: DE

Date of ref document: 20060518

Kind code of ref document: P

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

Ref country code: DE

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: 20060706

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

Effective date: 20070108

EN Fr: translation not filed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070129

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 NON-PAYMENT OF DUE FEES

Effective date: 20070129

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

Ref country code: FR

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: 20070309

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

Ref country code: FR

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: 20060405