EP0951371B1 - Verfahren zum herstellen einer kühlplatte für öfen zur eisen- und stahlerzeugung - Google Patents

Verfahren zum herstellen einer kühlplatte für öfen zur eisen- und stahlerzeugung Download PDF

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Publication number
EP0951371B1
EP0951371B1 EP98904032A EP98904032A EP0951371B1 EP 0951371 B1 EP0951371 B1 EP 0951371B1 EP 98904032 A EP98904032 A EP 98904032A EP 98904032 A EP98904032 A EP 98904032A EP 0951371 B1 EP0951371 B1 EP 0951371B1
Authority
EP
European Patent Office
Prior art keywords
preform
ducts
cooling plate
plate
continuous casting
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
EP98904032A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0951371A1 (de
Inventor
Marc Solvi
Roger Thill
Yrjö LEPPÄNEN
Pertti MÄKINEN
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.)
Luvata Pori Oy
Paul Wurth SA
Original Assignee
Outokumpu Poricopper Oy
Paul Wurth 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 LU90003A external-priority patent/LU90003B1/de
Application filed by Outokumpu Poricopper Oy, Paul Wurth SA filed Critical Outokumpu Poricopper Oy
Publication of EP0951371A1 publication Critical patent/EP0951371A1/de
Application granted granted Critical
Publication of EP0951371B1 publication Critical patent/EP0951371B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/009—Continuous casting of metals, i.e. casting in indefinite lengths of work of special cross-section, e.g. I-beams, U-profiles
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0041—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having parts touching each other or tubes assembled in panel form

Definitions

  • the present invention relates to a method for producing a Cooling plate with integrated coolant channels for furnaces for iron or steel production, such as Blast furnaces, from a block of copper.
  • Such cooling plates for blast furnaces are also called “staves”. She are arranged on the inside of the furnace shell and have internal Coolant channels connected to the cooling system of the shaft furnace become. The surface facing the inside of the furnace is mostly with lined with a refractory material.
  • the first attempt was to cast copper cooling plates by molding produce, the internal coolant channels through a sand core in the Mold are formed.
  • this procedure has been used in practice not proven, since the cast copper plates often voids and porosities have an extremely negative impact on the life of the panels, the molding sand is difficult to remove from the cooling channels and / or Cooling channel in the copper is poorly designed.
  • a cooling plate which consists of a forged or rolled copper block.
  • the coolant channels are blind holes that are caused by mechanical deep drilling in the rolled copper block.
  • Voids and porosities in the plate are practically excluded.
  • Manufacturing costs of these cooling plates are, however, relatively high, because in particular that Deep drilling the cooling channels is complicated, time consuming and expensive.
  • the invention is therefore based on the object of a method to propose with the particularly high quality Have copper cooling plates manufactured cheaper. This task is accomplished by a Method according to claim 1 solved.
  • a preform is formed by means of a continuous casting mold Continuous casting cooling plate, inserts in the casting channel of the continuous casting mold in Generate continuous channels in the preform that in the finished cooling plate form coolant channels.
  • a continuously cast Preform can then be relatively easily, without complex deep drilling, a Complete the long-length cooling plate.
  • cavities and porosities in continuous casting are far greater can be prevented more effectively than when molding.
  • the mechanical strength of a continuously cast cooling plate is much higher than that of a molded cooling plate.
  • the heat transfer is optimal because the continuously cast channels are formed directly in the cast body. Since the cross section of the continuously cast channels is not necessarily circular must be, new advantageous possibilities regarding the design and arrangement of the coolant channels opened. It was also found that the special nature of the surface of a continuous cast Cooling plate is a good basis for the adhesion of a refractory spray compound brings with it.
  • the tines in the pouring channel can Continuous casting mold in a continuous direction grooves in one surface of the preform. These grooves enlarge the cooled surface the finished cooling plate and form anchors for a refractory Lining out.
  • such grooves can also be retrofitted into one Surface of the continuously cast preform incorporated, for example be milled. This procedure is necessary, for example, if the Grooves should run transverse to the continuous casting direction.
  • the thickness is the continuously cast preform is advantageously reduced by rolling.
  • the crystal structure of the copper becomes finer, which is beneficial to the mechanical and thermal properties of the finished cooling plate.
  • the reduction in rolling increases the manufacturing cost of the cooling plate, it can therefore be advantageous to use also continuously cast preforms for thicker ones Roll cooling plates.
  • the channels cast into the preform Surprisingly, this is not a major obstacle to subsequent rolling the preform. This is especially true if the cast in Channels have an elongated, for example oval cross section.
  • the continuously cast and, if necessary, rolled preform is transformed into two Cut a plate across the casting direction, two End faces are formed transversely to the casting direction, the distance between them in essentially corresponds to the desired length of the cooling plate. It is It should be noted that it is advantageous to have several from a continuously cast preform Cooling plates of the same or different lengths can be produced. The Manufacturing particularly long cooling plates is also without additional effort possible.
  • the plates separated from the preform have several parallel through channels that extend in the casting direction and in the two ends each form a junction.
  • the cross section of the cast channels advantageously has an elongated one Form that has its smallest dimension perpendicular to the cooling plate.
  • cooling plates can be produced with a smaller plate thickness than Cooling plates with drilled channels, which saves copper.
  • channels with elongated cross sections are also easier are to be produced during continuous casting.
  • Another advantage is that at Channels with elongated cross-sections have larger exchange surfaces on the coolant side can be achieved in the cooling plate.
  • Channels with elongated (such as Example oval) cross sections behave as already above indicated, also much more advantageous when rolling the preform than channels with circular cross sections.
  • connection holes opening connection holes for preliminary and Return lines drilled perpendicular to the back surface in the plate, and the frontal openings of the channels closed.
  • Connection holes can then be used to connect the one from the furnace shell with a cooling plate mounted on the furnace shell be brought out.
  • Each continuously cast channel can have its own lead and Have return connection. Multiple continuous cast channels can however, they can also be connected to one another by means of transverse bores. This Cross bores are then arranged and closed, for example, that a serpentine channel with a flow connection and a Return connection per cooling plate results.
  • the cooling plate can advantageously be bent and centered in such a way that their curvature is adapted to the curvature of the furnace. This is especially the case when cooling plates with a large width are used. This is also the case for cooling plates that are used in the blast furnace frame. Such cooling plates for the frame must indeed be as close as possible to the Nestle tanks around the pressures acting on the frame lining to record.
  • FIG. 1 and Figure 2 show schematically the structure of a continuous casting mold 10 for the method according to the invention.
  • This continuous casting mold 10 consists of Example of four cooled mold plates 12, 14, 16 and 18, one cooled Pour 20 for a melt, for example a low alloy Form copper melt.
  • the arrows 22 and 24 in Figure 1 indicate Flow connections and return connections for a coolant in the side Form plates 12 and 14.
  • the arrow 25 in Figure 1 shows the pouring direction.
  • each of these rod-shaped inserts 28 advantageously consists of an outer tube 32 which is closed at the end and an open one at the end Inner tube 34 which are arranged such that they have an annular gap 36 for the Train coolant.
  • the coolant overflows in the collector 30 a flow chamber 38 into the annular gap 36. It cools the outer tube 32 its entire length and emerges from the annular gap 36 in the lower end Inner tube 34 a. This inner tube 34 directs the coolant into a Return chamber 40 back in the collector 30.
  • the rod-shaped inserts 28 can also be designed as uncooled graphite rods.
  • the front mold plate 16 has a plurality of tines 26 having. The latter extend essentially over the entire length of the Molding plate 16 and protrude perpendicularly to the casting direction into the pouring channel 20 inside.
  • the above-described continuous casting mold 10 is used in accordance with the invention Cast strand, which forms a preform of the cooling plate to be produced.
  • the rod-shaped inserts 28 produce in the continuous cast Preform channels running in the continuous casting direction, the cross section of which the cross section of the rod-shaped inserts 28 is determined.
  • the tines 26 in of the mold plate 18 produce in the continuously cast preform in Longitudinal grooves running in the casting direction.
  • FIGS. 3 to 4 show a finished cooling plate 50 based on a continuously cast preform.
  • the preform of the cooling plate 50 was cast with a continuous mold that had no tines 26 so that the original preform essentially had a rectangular cross section without grooves.
  • Figure 3 are with Dashed lines indicated the three channels 52 according to the invention Continuous casting through which inserts were created in the continuous casting mold. This The inserts had an oval shape, as can be seen in FIG. 5.
  • ducts 52 opened Connection holes 62 for flow and return ports 64, 66 perpendicular to Plate surface drilled in the back 68 of the plate. Before the front The mouths 58 of the channels 52 are definitely closed by plugs 70 If necessary, the channels could be mechanically reworked become. To finalize the cooling plate 50 only had to Flow and return spout 64, 66, and mounting spigot 72 and Spacer 74 are attached to the plate.
  • FIG. 6 shows an arrangement of cooling plates 80 in which the grooves 82 were produced in this way directly during continuous casting.
  • the cooling plates 80 which are produced during the continuous casting extend Cooling channels 84 (see FIG. 7) are therefore parallel to the grooves 82.
  • the cooling plates 80 are arranged horizontally in the oven, i.e. that in the built-in cooling plates 80, the cooling channels 84 and the grooves 82 horizontally run.
  • the cooling plates 80 are bent and centered such that their Curvature adapted to the curvature of the blast furnace shell (not shown) is.
  • FIG. 7 shows with dashed lines an advantageous arrangement of the coolant channels in one of the cooling plates 80.
  • Three continuously cast channels 84 1 , 84 2 and 84 3 and two short transverse bores 86 and 88 can be seen.
  • the bore 86 connects the channels 84 1 and 84 2 at one end of the plate 80 and is closed with a plug 90.
  • the bore 88 connects the channels 84 2 and 84 3 at the other end of the plate 80 and is closed with a plug 92.
  • the channels 84 1 , 84 2 and 84 3 in the end faces 54, 56 of the plate 80 are also closed by plugs 70.
  • the reference number 94 shows a flow connection which opens into the channel 84 1
  • the reference number 96 shows a return connection which opens into the channel 84 3 .
  • the coolant that enters the plate 80 via the supply connection 94 must flow through the latter in a serpentine fashion before it can leave it again via the return connection 96.
  • FIG. 6 shows schematically how the supply and return connections 94, 96 of the individual cooling plates 80 are connected to one another via pipe bridges 98.
  • the cooling plate 80 like the cooling plate 50, could also have a flow and return connection for each cooling channel 84 1 , 84 2 and 84 3 .
  • the cooling plates in the furnace above the Blow molds are advantageously attached to the inside of the furnace facing the side with a fireproof spray compound.
  • the grooves 60, 82 are designed, for example, as dovetail grooves become. It is also advantageous to have the edges and corners of the grooves 60, 82 to round off generously. This will in fact increase the risk of cracking the refractory mass is reduced.
  • cooling plates for the frame of the blast furnace advantageously have one smooth front and back on. They are thinner than the cooling plates shown with grooves and are advantageous from a continuously cast preform manufactured, the thickness of which was reduced by rolling. You will be on the Diameter of the shell centered in the area of the frame, so that it Form-fit against the blast furnace shell with its smooth rear surface.
  • the frame lining with shaped stones made of carbon lies here form-fitting on the likewise smooth front of the cooling plates. This ensures that relatively thin cooling plates can withstand the high pressures that act on the frame lining without problems on the blast furnace can transmit.
  • All cooling plates shown have three continuously cast channels. Of course, you can also use the method according to the invention Cooling plates with more or less than three continuously cast channels getting produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Blast Furnaces (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP98904032A 1997-01-08 1998-01-05 Verfahren zum herstellen einer kühlplatte für öfen zur eisen- und stahlerzeugung Expired - Lifetime EP0951371B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
LU90003 1997-01-08
LU90003A LU90003B1 (de) 1997-01-08 1997-01-08 Verfahren zum Herstellen einer Kuehlplatte fuer Schachtoefen
LU90146 1997-09-30
LU90146A LU90146A7 (de) 1997-01-08 1997-09-30 Verfahren zum Herstellen einer Kuehlplatte fuer Schachtoefen
PCT/EP1998/000021 WO1998030345A1 (de) 1997-01-08 1998-01-05 Verfahren zum herstellen einer kühlplatte für öfen zur eisen- und stahlerzeugung

Publications (2)

Publication Number Publication Date
EP0951371A1 EP0951371A1 (de) 1999-10-27
EP0951371B1 true EP0951371B1 (de) 2001-08-08

Family

ID=26640362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98904032A Expired - Lifetime EP0951371B1 (de) 1997-01-08 1998-01-05 Verfahren zum herstellen einer kühlplatte für öfen zur eisen- und stahlerzeugung

Country Status (13)

Country Link
US (1) US6470958B1 (ja)
EP (1) EP0951371B1 (ja)
JP (1) JP3907707B2 (ja)
AT (1) ATE203941T1 (ja)
AU (1) AU6207198A (ja)
BR (1) BR9806859A (ja)
CA (1) CA2274861C (ja)
CZ (1) CZ293516B6 (ja)
DE (1) DE59801166D1 (ja)
ES (1) ES2159935T3 (ja)
PL (1) PL185392B1 (ja)
RU (1) RU2170265C2 (ja)
WO (1) WO1998030345A1 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344639A (en) * 1998-12-08 2000-06-14 British Steel Plc Cooling panels for blast furnaces
ID24579A (id) * 1998-12-22 2000-07-27 Outokumpu Oy Metode untuk membuat elemen pendingin tuang luncur dan elemen pendingin yang dibuat dengan metode ini
FI107789B (fi) * 1999-02-03 2001-10-15 Outokumpu Oy Valumuotti jäähdytyselementin valmistamiseksi ja muotissa valmistettu jäähdytyselementti
DE10024587A1 (de) * 2000-05-19 2001-11-22 Km Europa Metal Ag Kühlplatte
FI115251B (fi) * 2002-07-31 2005-03-31 Outokumpu Oy Jäähdytyselementti
EP1391521A1 (de) * 2002-08-20 2004-02-25 Voest-Alpine Industrieanlagenbau GmbH & Co. Kühlplatte für metallurgische Öfen
DE102004035963A1 (de) 2004-07-23 2006-02-16 Km Europa Metal Ag Kühlplatte
EP2370603A4 (en) * 2008-12-29 2017-05-17 Luvata Espoo OY Method for producing a cooling element for pyrometallurgical reactor and the cooling element
KR101019794B1 (ko) 2009-05-11 2011-03-04 주식회사 경동나비엔 보일러의 연소실 냉각구조
US8268233B2 (en) * 2009-10-16 2012-09-18 Macrae Allan J Eddy-free high velocity cooler
FI124223B (fi) 2010-06-29 2014-05-15 Outotec Oyj Suspensiosulatusuuni ja rikastepoltin
EP2694703A2 (en) * 2011-04-08 2014-02-12 BHP Billiton Aluminium Technologies Limited Heat exchange elements for use in pyrometallurgical process vessels
RS62474B1 (sr) 2013-02-01 2021-11-30 Berry Metal Co Stub sa spoljnim razvodnikom
RU2600046C2 (ru) * 2015-01-12 2016-10-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Чувашский государственный университет имени И.Н. Ульянова" Способ изготовления охлаждающего поддона металлургической печи

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161664B (de) 1956-10-31 1964-01-23 Ver Leichtmetallwerke Gmbh Aus Gussbarren gewalzte Waermeaustauschplatte
US3136008A (en) * 1960-06-20 1964-06-09 Continental Can Co Apparatus and method for continuous casting of ingots having longitudinal channels and spacer member therein
FR1432629A (fr) 1965-02-04 1966-03-25 Elément pour paroi tubulaire étanche et sa fabrication
GB1571789A (en) 1976-12-30 1980-07-16 Brown & Sons Ltd James Furnace cooling element
DE2907511C2 (de) 1979-02-26 1986-03-20 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Kühlplatte für Schachtöfen, insbesondere Hochöfen, und Verfahren zur Herstellung derselben
JPS59141347A (ja) * 1983-02-01 1984-08-14 Kuroki Kogyosho:Kk 連続鋳造用鋳型
DE3836328A1 (de) 1988-10-25 1990-04-26 Emitec Emissionstechnologie Verfahren zur herstellung von einzelnocken aus gusswerkstoff
DE4035893C1 (en) 1990-11-12 1992-01-30 Hampel, Heinrich, Dr., Moresnet, Be Cooling box for blast furnace - with groove for cooling medium in base, with cover attached by explosive welding to form closed channel
DE29611704U1 (de) 1996-07-05 1996-10-17 Gutehoffnungshuette Man Kühlplatte für metallurgische Öfen

Also Published As

Publication number Publication date
BR9806859A (pt) 2000-04-18
AU6207198A (en) 1998-08-03
JP3907707B2 (ja) 2007-04-18
WO1998030345A1 (de) 1998-07-16
ES2159935T3 (es) 2001-10-16
ATE203941T1 (de) 2001-08-15
CZ293516B6 (cs) 2004-05-12
DE59801166D1 (de) 2001-09-13
JP2001507630A (ja) 2001-06-12
EP0951371A1 (de) 1999-10-27
CA2274861A1 (en) 1998-07-16
PL185392B1 (pl) 2003-05-30
PL334628A1 (en) 2000-03-13
US6470958B1 (en) 2002-10-29
RU2170265C2 (ru) 2001-07-10
CZ242599A3 (cs) 2000-07-12
CA2274861C (en) 2005-04-12

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