EP1391521A1 - Kühlplatte für metallurgische Öfen - Google Patents

Kühlplatte für metallurgische Öfen Download PDF

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Publication number
EP1391521A1
EP1391521A1 EP02018642A EP02018642A EP1391521A1 EP 1391521 A1 EP1391521 A1 EP 1391521A1 EP 02018642 A EP02018642 A EP 02018642A EP 02018642 A EP02018642 A EP 02018642A EP 1391521 A1 EP1391521 A1 EP 1391521A1
Authority
EP
European Patent Office
Prior art keywords
cooling plate
coolant
holding
plate
furnace
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.)
Withdrawn
Application number
EP02018642A
Other languages
German (de)
English (en)
French (fr)
Inventor
Herbert Scharinger
Walter Rainer Kastner
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Priority to EP02018642A priority Critical patent/EP1391521A1/de
Priority to AT0058702U priority patent/AT6277U1/de
Priority to DE20213759U priority patent/DE20213759U1/de
Priority to DE50311974T priority patent/DE50311974D1/de
Priority to BR0313444-0A priority patent/BR0313444A/pt
Priority to KR1020057002807A priority patent/KR20050050092A/ko
Priority to CNB038196654A priority patent/CN100507010C/zh
Priority to AU2003250046A priority patent/AU2003250046B2/en
Priority to UAA200502446A priority patent/UA77849C2/uk
Priority to PCT/EP2003/007580 priority patent/WO2004018713A1/de
Priority to MXPA05001866A priority patent/MXPA05001866A/es
Priority to ZA200501130A priority patent/ZA200501130B/en
Priority to RU2005107719/02A priority patent/RU2309351C2/ru
Priority to EP03792197A priority patent/EP1532281B1/de
Priority to PL374577A priority patent/PL198559B1/pl
Priority to CA002495552A priority patent/CA2495552A1/en
Priority to US10/525,600 priority patent/US7537724B2/en
Priority to JP2004530020A priority patent/JP4358109B2/ja
Priority to AT03792197T priority patent/ATE444378T1/de
Priority to TW092119240A priority patent/TWI265197B/zh
Priority to MYPI20032827A priority patent/MY137621A/en
Publication of EP1391521A1 publication Critical patent/EP1391521A1/de
Withdrawn 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
    • C21B7/10—Cooling; Devices therefor
    • 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
    • C21C5/4646—Cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/24—Cooling arrangements
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
    • F27D2009/0021—Cooling of furnaces the cooling medium passing through a pattern of tubes with the parallel tube parts close to each other, e.g. a serpentine
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0045—Cooling of furnaces the cooling medium passing a block, e.g. metallic
    • F27D2009/0048—Cooling of furnaces the cooling medium passing a block, e.g. metallic incorporating conduits for the medium
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0051—Cooling of furnaces comprising use of studs to transfer heat or retain the liner
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0056—Use of high thermoconductive elements
    • F27D2009/0062—Use of high thermoconductive elements made from copper or copper alloy

Definitions

  • the invention relates to a cooling plate consisting of copper or low-alloy Copper alloy, for metallurgical with an outer furnace armor plate Ovens, with at least one, preferably at least two, inside the cooling plate extending coolant channels, with coolant pipe pieces for the coolant supply or -Drain through the furnace sheet metal are led outwards.
  • Such cooling plates are arranged between the jacket and the lining and connected to a cooling system. On the inside of the stove some of the cooling plates are provided with refractory material.
  • DE 199 43 287 A1 discloses a copper cooling plate which is close to the upper one Coolant pipe pieces fixed with a fixed point fastener Furnace is connected.
  • the upper coolant pipe sections are also fixed connected to the furnace.
  • Other fasteners are as Lostician fasteners executed which have a mobility in both horizontal (x) and also allow vertical (y) direction.
  • the lower coolant pipe pieces are only gas-tightly connected to the furnace shell using conventional expansion joints. In this Area, the cooling plate is therefore not fixed in any of the three spatial directions.
  • Cooling plate Due to the fact that the side of the cooling plate facing the furnace interior Temperatures of more than 300 ° C reached and that facing the furnace Side on coolant temperature, i.e. around ambient temperature, is the Cooling plate exposed to very large thermal stresses. In the Cooling plate of DE 199 43 287 A1 leads to the fact that the plate, yes is completely fixed in several places, plastically deformed under the influence of temperature and itself bulges into the inside of the oven when cooling down. Cracks in the Coolant pipe sections and coolant outlet are therefore the result.
  • the object of the invention is a To create a cooling plate in which such a bowl-like deformation no longer is possible and in which therefore no stress-related cracks in the Coolant pipe pieces occur more.
  • cooling plate with Holding tubes is provided, which are guided through the furnace sheet to the outside and which after passing through the furnace sheet Fastening elements, in particular holding plates or holding disks, are provided and wherein the support tubes and the fasteners are made of one material are, which increased compared to copper or low-alloy copper alloy Has strength.
  • the cooling plate according to the invention is in both the positions of the holding tubes vertically (y) as well as horizontally (x) direction while moving in z-direction, ie a "encapsulation" in the direction of the furnace interior, from the to the Fastening tubes attached fastening elements, which outside the Support furnace against this, is prevented.
  • the material specifically preferred for the holding tubes and fastening elements is steel, possibly also stainless steel. In principle, however, any material is suitable, provided it the requirement of a copper or low-alloy copper alloy significantly increased strength, as is the case with steel. Also preferred is a material that is at least weldable with itself and preferably is also weldable with copper or low-alloy copper alloy, which is also the case with the particularly preferred material steel.
  • the cooling plate according to the invention is in a central area through a fixed point fastener with the Furnace sheet metal connected.
  • Such a fixed point fastener can be, for example Be fastening bolts and fixes the plate in each of the three at this point Spatial directions.
  • the cooling plate according to the invention is thus fixed in position and can altogether not from this position due to thermal stressing forces be moved. Thermal expansion of the plate, however, is from this central fixed point from still possible without restrictions.
  • the cooling plate is - in particular with a height / width ratio of the cooling plate of ⁇ 3 - with at least one arranged above and / or below the fixed point fastening element Lostician fastener, which only mobility in the vertical direction allowed, provided.
  • the cooling plate is - especially with a height / width ratio Cooling plate of ⁇ 3, preferably ⁇ 2- with at least one left and / or right next to the fixed point fastener arranged loose point fastener, which is only mobility in the horizontal direction allowed, provided.
  • Such a starting point fastening element can be, for example Fastening bolt with washer, the washer with the furnace shell remains unwelded and can slide in one direction, be and fixes - depending on the orientation of the fastener - the plate either in x or in the y direction, but in any case in the z direction.
  • a particularly preferred embodiment of the cooling plate according to the invention consists in the fact that there are webs on the side facing the interior of the furnace and Has grooves, wherein the webs are segmented in their longitudinal direction.
  • the webs are the part of the cooling plate that the cooling effect of the coolant least exposed.
  • the webs therefore reach the maximum temperature of the entire cooling plate (the aforementioned about 300 ° C).
  • the webs in individual sections become those due to the thermal expansion of the webs tension forces caused to the minimum possible.
  • the Subdivision of the webs would also be taken on its own when out of the State of the art known cooling plates a suitable means around "Encryption" of the cooling plates and reduce the life of the cooling plates, especially the coolant pipe sections to increase significantly.
  • the segmentation of the webs be essentially cuts are made at right angles to the webs.
  • the segmentation of the webs is designed so that the individual segments are offset from each other in the horizontal direction.
  • a holding tube each have a coolant tube piece surrounds that a holding tube is guided through the furnace shell to the outside and a Piece of coolant pipe inside a holding tube through the furnace shell is led outside.
  • the type of connection between the holding tube and the cooling plate or between Coolant pipe section and cooling plate or even between the holding tube and The coolant pipe section can be of various types.
  • the coolant pipe piece is on surrounding retaining tube welded a disc-shaped connector and screwed this connector on the cooling plate.
  • the coolant pipe piece is welded to the cooling plate.
  • the holding tube surrounding the coolant tube piece is welded directly to the cooling plate, the coolant pipe section is also with the Welded cooling plate.
  • Coolant pipe section and Holding tube sit on this connector.
  • connection between Connector and cooling plate on the one hand, and between the connector and Coolant pipe section or holding pipe is preferably carried out by welding.
  • the coolant tube piece is made in one piece and with provided a flange, which flange is attached to the cooling plate.
  • the holding tube surrounds the coolant pipe section, sits on this flange and is through Welding attached.
  • a holding tube is also used as a piece of coolant tube carried out, with both functionalities, i.e. the coolant supply and discharge and Holding function can be carried by this one piece of pipe.
  • Coolant pipe sections either from the same base material as the cooling plate or another, preferably the material of the holding tube.
  • Coolant tube also holding tube and therefore definitely made of the material of the holding tube.
  • Fig. 1 shows a two-channel cooling plate 1, which is attached to a furnace sheet 2 .
  • the cooling plate consists of copper and has webs 3 on the side facing the furnace interior.
  • the space between the cooling plate 1 and furnace sheet 2 is backfilled with refractory material.
  • Further cooling plates 1 ' are arranged above and below and - not shown - to the side of the cooling plate 1 .
  • the cooling plate 1 is provided with vertical cooling channels 5 , which are designed as blind bores of the cast or rolled plate body.
  • coolant pipe pieces 6 for the supply and discharge of coolant (usually water) are guided through the furnace shell 2 .
  • the holding tube 7 is welded to a disk-shaped connecting piece 8 , which in turn is fastened to the cooling plate 1 by a screw connection 9 .
  • the holding tube 7 is provided with a welded-on holding disc 10 , which limits the mobility of the cooling plate 1 in the direction of the furnace interior.
  • the holding pipe 7 and the coolant pipe section 6 are connected in a gas-tight manner to the furnace armor plate 2 by means of a conventional compensator 11 .
  • this is fixedly connected to the furnace armor plate 2 by means of a fixed point fastening 12 designed as a fastening bolt.
  • the fixed point fastening 12 is welded gas-tight to the furnace armor plate 2 .
  • Loose point fastenings 13 are arranged above and below the fixed point fastener 12 .
  • the loose point fastenings 13 are also designed as fastening bolts, but these are not welded to the furnace shell 2 in a gas-tight manner, but can slide up and down in a guide 14 .
  • sealing hoods 15 are attached over the loose point fastenings 13 .
  • FIG. 2 shows a four-channel cooling plate 16 which, with the exception of twice the number of cooling channels 5, is largely identical to the cooling plate 1 shown in FIG. 1 . Due to the different height / width ratio, the loose point fastenings 13 are not mounted above and below the fixed point fastener 12 , but rather to the side thereof. The guides 14 of the loose point fastenings 13 are arranged in such a way that sliding in the horizontal direction is possible.
  • FIG. 3 schematically shows the arrangement of two-channel cooling plates 1 and four-channel cooling plates 16 in an oven. Also shown is the coordinate system, which illustrates the x, y and z directions to which the text has repeatedly referred.
  • FIG 4 shows the webs 3 of the cooling plate 16 which are segmented in the horizontal direction.
  • the individual segments are each about the same size and offset in the horizontal direction by about half their length.
  • FIG 5 shows an enlarged representation of the preferred variant of the embodiment according to the invention of holding tube 7 , coolant tube piece 6 and the attachment of connecting piece 8 by means of screw connection 9 on cooling plate 1 .
  • FIG. 6 differs from that shown in FIG. 5 in that the connection between the holding tube 7 and the cooling plate 1 is produced by welding.
  • FIG. 7 shows an embodiment in which both the holding tube 7 and the coolant tube piece 6 are fastened on the connecting piece 8 .
  • Fig. 8 illustrates a made in one piece, provided with a flange coolant pipe piece 6 being secured to this flange and the holding pipe 6.
  • Fig. 9 shows a special form.
  • the raw piece 17 is made of the material of the holding tubes, for example steel, and due to the - compared to copper - higher strength at the same time as a coolant tube piece and Holding tube is used.
  • FIGS. 5 to 9 fix immediately outside the furnace armor 2 mounted, welded to the holding tubes 7.17 holding disks 10, the respective cooling plate 1 in the z-direction toward the furnace interior.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blast Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Details (AREA)
  • Resistance Heating (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP02018642A 2002-08-20 2002-08-20 Kühlplatte für metallurgische Öfen Withdrawn EP1391521A1 (de)

Priority Applications (21)

Application Number Priority Date Filing Date Title
EP02018642A EP1391521A1 (de) 2002-08-20 2002-08-20 Kühlplatte für metallurgische Öfen
AT0058702U AT6277U1 (de) 2002-08-20 2002-09-04 Kühlplatte für metallurgische öfen
DE20213759U DE20213759U1 (de) 2002-08-20 2002-09-05 Kühlplatte für metallurgische Öfen
DE50311974T DE50311974D1 (de) 2002-08-20 2003-07-14 Kühlplatte für metallurgische öfen
BR0313444-0A BR0313444A (pt) 2002-08-20 2003-07-14 Placa de refrigeração, constituìda de cobre ou de uma liga de cobre de baixa liga, para fornos metalúrgicos
KR1020057002807A KR20050050092A (ko) 2002-08-20 2003-07-14 야금로용 냉각판
CNB038196654A CN100507010C (zh) 2002-08-20 2003-07-14 用于冶金炉的散热板
AU2003250046A AU2003250046B2 (en) 2002-08-20 2003-07-14 Cooling plate for metallurgic furnaces
UAA200502446A UA77849C2 (en) 2002-08-20 2003-07-14 A cooling plate for metallurgic furnaces
PCT/EP2003/007580 WO2004018713A1 (de) 2002-08-20 2003-07-14 Kühlplatte für metallurgische öfen
MXPA05001866A MXPA05001866A (es) 2002-08-20 2003-07-14 Placa de enfriamiento para hornos metalurgicos.
ZA200501130A ZA200501130B (en) 2002-08-20 2003-07-14 Cooling plate for metallurgic furnaces
RU2005107719/02A RU2309351C2 (ru) 2002-08-20 2003-07-14 Охлаждающая панель для металлургической печи
EP03792197A EP1532281B1 (de) 2002-08-20 2003-07-14 Kühlplatte für metallurgische öfen
PL374577A PL198559B1 (pl) 2002-08-20 2003-07-14 Płyta chłodząca do pieców metalurgicznych
CA002495552A CA2495552A1 (en) 2002-08-20 2003-07-14 Cooling plate for metallurgical furnaces
US10/525,600 US7537724B2 (en) 2002-08-20 2003-07-14 Cooling plate for metallurgic furnaces
JP2004530020A JP4358109B2 (ja) 2002-08-20 2003-07-14 冶金炉用冷却プレート
AT03792197T ATE444378T1 (de) 2002-08-20 2003-07-14 Kühlplatte für metallurgische öfen
TW092119240A TWI265197B (en) 2002-08-20 2003-07-15 Cooling plate for metallurgical furnaces
MYPI20032827A MY137621A (en) 2002-08-20 2003-07-28 Cooling plate for metallurgical furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02018642A EP1391521A1 (de) 2002-08-20 2002-08-20 Kühlplatte für metallurgische Öfen

Publications (1)

Publication Number Publication Date
EP1391521A1 true EP1391521A1 (de) 2004-02-25

Family

ID=8185477

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02018642A Withdrawn EP1391521A1 (de) 2002-08-20 2002-08-20 Kühlplatte für metallurgische Öfen
EP03792197A Expired - Lifetime EP1532281B1 (de) 2002-08-20 2003-07-14 Kühlplatte für metallurgische öfen

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03792197A Expired - Lifetime EP1532281B1 (de) 2002-08-20 2003-07-14 Kühlplatte für metallurgische öfen

Country Status (18)

Country Link
US (1) US7537724B2 (ko)
EP (2) EP1391521A1 (ko)
JP (1) JP4358109B2 (ko)
KR (1) KR20050050092A (ko)
CN (1) CN100507010C (ko)
AT (2) AT6277U1 (ko)
AU (1) AU2003250046B2 (ko)
BR (1) BR0313444A (ko)
CA (1) CA2495552A1 (ko)
DE (2) DE20213759U1 (ko)
MX (1) MXPA05001866A (ko)
MY (1) MY137621A (ko)
PL (1) PL198559B1 (ko)
RU (1) RU2309351C2 (ko)
TW (1) TWI265197B (ko)
UA (1) UA77849C2 (ko)
WO (1) WO2004018713A1 (ko)
ZA (1) ZA200501130B (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619461A1 (de) * 2004-07-23 2006-01-25 KM Europa Metal Aktiengesellschaft Kühlplatte
CN100465290C (zh) * 2007-01-12 2009-03-04 汕头华兴冶金备件厂有限公司 一种叠合式冷却壁
CN114269952A (zh) * 2019-08-09 2022-04-01 保尔沃特股份公司 用于维护冶金炉的冷却组件的方法

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391521A1 (de) * 2002-08-20 2004-02-25 Voest-Alpine Industrieanlagenbau GmbH & Co. Kühlplatte für metallurgische Öfen
DE10316367A1 (de) * 2003-04-10 2004-10-28 Km Europa Metal Ag Kühlplatte
MY144669A (en) * 2004-02-04 2011-10-31 Tech Resources Pty Ltd Metallurgical vessel
JP4751238B2 (ja) * 2006-05-17 2011-08-17 新日本製鐵株式会社 高炉用ステーブクーラ
ATE489786T1 (de) 2006-09-07 2010-12-15 France Telecom Fernbedienverfahren und entsprechendes system für hausgeräte
US7832367B2 (en) * 2007-12-05 2010-11-16 Berry Metal Company Furnace panel leak detection system
LU91455B1 (en) * 2008-06-06 2009-12-07 Wurth Paul Sa Gap-filler insert for use with cooling plates for a metallurgical furnace
LU91494B1 (en) * 2008-11-04 2010-05-05 Wurth Paul Sa Cooling plate for a metallurgical furnace and its method of manufacturing
BR112012025025A2 (pt) * 2010-03-30 2019-09-24 Berry Metal Co aparelho e método para suporte secundário de aduela estanque a gases.
CN103090660B (zh) * 2011-11-04 2015-01-21 天地龙控股集团有限公司 竖炉不锈钢防撞段
RU2674546C2 (ru) * 2013-10-08 2018-12-11 Хэтч Лтд. Система охлаждения печи с теплопроводящими соединениями между охлаждающими элементами
JP6455347B2 (ja) * 2015-07-07 2019-01-23 新日鐵住金株式会社 ステーブクーラの取り付け構造の更新方法
LU100107B1 (en) * 2017-02-22 2018-10-02 Wurth Paul Sa Cooling Panel for Metallurgical Furnace
CN108977600A (zh) * 2018-09-29 2018-12-11 陕西龙门钢铁有限责任公司 一种高炉冷却强度分段式控制系统
LU101462B1 (en) * 2019-10-31 2021-05-14 Wurth Paul Sa Method for Maintenance of a Cooling Assembly for a Metallurgical Furnace
EP3839075A1 (en) * 2019-12-18 2021-06-23 Paul Wurth S.A. Cooling plate for a metallurgical furnace

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DE19943287A1 (de) * 1999-09-10 2001-03-15 Sms Demag Ag Kupferkühlplatte für metallurgische Öfen
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WO2002035168A1 (fr) * 2000-10-27 2002-05-02 Nippon Steel Corp Panneau froid de paroi de haut fourneau

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CN114269952B (zh) * 2019-08-09 2023-10-24 保尔沃特股份公司 用于维护冶金炉的冷却组件的方法

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US7537724B2 (en) 2009-05-26
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