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US20040046292A1 - Cooling element for shaft furnaces - Google Patents

Cooling element for shaft furnaces Download PDF

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Publication number
US20040046292A1
US20040046292A1 US10/381,357 US38135703A US2004046292A1 US 20040046292 A1 US20040046292 A1 US 20040046292A1 US 38135703 A US38135703 A US 38135703A US 2004046292 A1 US2004046292 A1 US 2004046292A1
Authority
US
United States
Prior art keywords
cooling
channel
coolant
cooling element
section
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.)
Abandoned
Application number
US10/381,357
Other languages
English (en)
Inventor
Peter Heinrich
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.)
SMS Siemag AG
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to SMS DEMAG AG reassignment SMS DEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEINRICH, PETER
Publication of US20040046292A1 publication Critical patent/US20040046292A1/en
Priority to US11/505,743 priority Critical patent/US20070013113A1/en
Abandoned 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
    • 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
    • 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 specially adapted for 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention pertains to a cooling element for shaft furnaces, especially blast furnaces, with an area through which a coolant, preferably water, flows as the result of the arrangement of at least one internal coolant-carrying channel, which leads to coolant feed and discharge pipes connected to the cooling element, the cooling element also having edge areas.
  • a coolant preferably water
  • Cooling elements of this type serve to cool the walls of blast furnaces. They are usually installed between the steel furnace jacket and the furnace lining and are provided with refractory material on the side facing the interior of the furnace.
  • Cooling elements are known in which the cooling channels are formed by pipes, usually made of steel, which are cast into a matrix of cast iron.
  • the cooling channels passing through the cooling element are usually arranged vertically with respect to the longitudinal axis of the base body.
  • These plates can also consist of cast copper instead of cast iron.
  • forged or rolled cooling plates of copper or low-alloy copper are also known, the cooling channels of which are vertically oriented blind bores, which are introduced by deep mechanical drilling or milling.
  • a feature essentially common to all of the known staves is that they have an area through which a coolant flows as the result of the arrangement of cooling channels, which lead to coolant feed and discharge pipes passing through the wall of the blast furnace, the staves also having edge areas, which extend essentially beyond the pipes. These edge areas are not cooled as intensively, of course, as the area of the staves through which the cooling channels pass.
  • the reason for the less intensive cooling of the edge areas is the disproportionately large distance between the coolant-carrying area and the corners or edges of the staves, that is, the end areas. The heat which accumulates there must be transported by conduction to the cross section through which the coolant flows.
  • the cooling pipes cannot be moved as far as one might wish into the edge areas of the staves to improve the cooling effect.
  • compensators are installed on the outside surface of the steel jacket of the furnace, which have the job of allowing the cooling pipes to pass in a gas-tight manner through the steel jacket. Because of their geometric dimensions, these compensators require that the centers of the cooling pipes must be maintained at certain vertical and horizontal distances from each other. These distances must also be maintained so that the steel jacket of the furnace is not weakened too much, which could be the case if the holes were too closely spaced in their rows.
  • the outside diameter and wall thickness of the pipes limit the degree to which they can be bent, which means that it is impossible to bend them into a shape which could allow them to pass through the edge area.
  • the invention is based on the task of creating a cooling element of the basic type in question which offers improved cooling in the end areas, that is, at the edges.
  • the proposed cooling system is not an independent cooling system with its own pipe connectors—which weaken the wall of the blast furnace—but rather a modification of the coolant feed system according to which the cooling channels passing through the base body are extended all the way to the edge areas, including the corner areas, if desired.
  • the cross section of the channel extending through the edge area is comparatively larger and is provided with a (coolant) guide element, so that the coolant, coming from the base body, flows into the edge area, reverses direction, and flows back essentially in the opposite direction to the opening of the pipe.
  • the coolant is guided first to the edge area and flows from there into the base body through the cooling channel. It is advantageous here for the cross section of the cooling section to be doubled, so that the actual cross sections of the two parts of the channel in the cooling section which carry the coolant in opposite directions will be the same as that of the main cooling channel in the base body. As a result of this measure, a homogeneous flow velocity is obtained within the cooling system.
  • the cooling effect on the edge and corner areas of the stave is therefore improved without the need to make any change in the spacing of the cooling pipe pass-throughs, i.e., in the spacing of the pipes passing through the steel jacket of the furnace, this being the spacing which is determined by the compensators.
  • the goal is achieved that the coolant can be conducted right to the edges of the staves.
  • the distance which still remains between the areas through which the cooling water can flow and those through which it cannot flow is thus significantly reduced, namely, to the same value which is present in the regular part of the cooling element and which is sufficient for adequate cooling.
  • the edge area of the cooling element be designed as a separate endpiece, the cooling channel sections of which are provided with guide elements.
  • the separate endpiece is attached to the base body, which carries the internal cooling channels.
  • the endpiece can be manufactured as a single unit in the form of a casting or forging, for example, or it can consist of several pieces which are welded together.
  • the endpiece is preferably designed so that it already has an appropriate bore for receiving the opening of the coolant feed or discharge pipe which passes in each case through the wall of the shaft furnace.
  • the endpiece which is provided should have the same number of cooling sections as there are internal vertical cooling channels.
  • the number of endpieces could correspond to the number of profiled sections.
  • FIG. 1 shows a side view of parts of two cooling elements with endpieces as proposed according to the invention, one element being installed above the other;
  • FIG. 2 shows a view of the cooling elements according to FIG. 1 from the perspective of the steel jacket around the furnace;
  • FIG. 3 shows a side view of parts of two cooling elements according to the state of the art, one installed above the other;
  • FIG. 4 shows a view of the cooling elements according to FIG. 3 from the perspective of the steel jacket of the furnace.
  • FIG. 1 shows parts of two staves 1 , 2 .
  • a pipe 3 for the discharge of coolant is connected to the top end of the lower stave 1
  • a pipe 4 for supplying coolant is connected to the bottom end of the upper stave 2 .
  • the pipes 3 , 4 themselves pass through openings 6 , 7 in the furnace wall 5 .
  • Each of the staves 1 , 2 comprises a base body 8 with vertical cooling channels 9 .
  • the staves consist of copper or of a low-alloy copper.
  • the staves 1 , 2 are provided with webs and grooves 10 , 11 to accept refractory material.
  • An endpiece 12 as proposed by the invention is welded to the top end of the base body 8 of the stave 1 .
  • This endpiece has a channel section 13 forming an extension of the associated vertical cooling channel 9 or several channel sections forming extensions of the several cooling channels in the base body, only one of which can be seen in the cross-sectional view shown.
  • the cross section of the channel section 13 is larger than that of the vertical cooling channel 9 and is divided over part of its length by a guide element 14 .
  • the guide element 14 forms a direct extension of the side 15 of the channel which can be seen in the base body, i.e., the side facing the steel jacket of the furnace.
  • an appropriate bore is introduced into the separate endpiece at the level of the pipe 3 , so that the endpieces can be connected to the pipes passing through the blast furnace wall.
  • the endpiece can be made of several parts, which are then welded together.
  • the endpieces are preferably provided with the pipes 3 before said endpieces are installed.
  • each stave it is not absolutely necessary for both the top and bottom ends of each stave to be replaced with an endpiece according to the invention with its modified water channel. Even if the modified water channel is provided at only one end (as shown here), the cooling capacity is increased in the edge areas of both adjoining staves. It is advantageous for a stave to be provided with a separate endpiece at only one end. Although such an endpiece will be longer than would be the case if two endpieces were used, that is, one at the top and one at the bottom, it offers economic advantages in terms of manufacturing.
  • FIG. 2 shows how the staves are installed on the furnace wall when the staves in question have endpieces only at their top ends.
  • the staves 1 , 2 shown here are assembled from extruded or rolled sections, which are welded together at the webs extending along their long edges (see the dashed line). As indicated by the dash-dot line of the weld 19 , each section is welded at the top end to an endpiece 12 with the water flow system according to the invention.
  • the distance between the water feed pipes and the seam 18 between the two stacked staves 1 , 2 is different from that between the water discharge pipes and the seam. The seam is thus not equidistant between the pipes (see FIG. 4).
  • the distances A and A′ in FIG. 2 are intended to show how, as a result of the water-cooled endpiece 12 with its flow-guiding element 14 , the distance between the area through which cooling water flows and the outer edges of the staves is reduced, resulting in an improved cooling action in the corners and edges.
  • an endpiece attached to the top end offers the advantage of providing a fixed point by which the cooling element can be hung in place. Attaching the endpiece to the bottom end of the cooling element, however, offers the advantage of reducing the danger of the formation of air or vapor spaces, the insulating effect of which could interfere with good cooling.
  • FIG. 3 shows the water flow system of the previously known staves.
  • the parts of these cooling elements which are the same as those in FIG. 1 have been given the same——reference numbers.
  • the staves 20 , 21 shown here are provided with cast-in pipes 22 , 23 as cooling channels, which are guided by means of suitable shield pipes 24 , 25 through appropriate openings 6 , 7 in the furnace wall 5 .
  • the flow of cooling water between the two staves is again indicated by a broken line. It is evident that, in comparison with the cooling elements proposed in accordance with the invention, much larger edge areas 26 , 27 are not cooled, which are therefore subject to greater wear.
  • FIG. 2 FIG.
  • FIG. 4 shows a view of stacked cooling elements 20 , 21 with vertical cooling channels 22 , 23 according to the state of the art.
  • the seam between two staves arranged vertically one above the other along the furnace wall is basically the same distance away from the two sets of cooling channels and is therefore in the center between the associated edge areas.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Heat Treatment Of Articles (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Details (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Electric Stoves And Ranges (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
US10/381,357 2000-10-07 2001-09-28 Cooling element for shaft furnaces Abandoned US20040046292A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/505,743 US20070013113A1 (en) 2000-10-07 2006-08-16 Cooling element for shaft furnaces

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10049707.1 2000-10-07
DE10049707A DE10049707A1 (de) 2000-10-07 2000-10-07 Kühlelement für Schachtöfen
PCT/EP2001/011221 WO2002031211A1 (de) 2000-10-07 2001-09-28 Kühlelement für schachtöfen

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/505,743 Continuation US20070013113A1 (en) 2000-10-07 2006-08-16 Cooling element for shaft furnaces

Publications (1)

Publication Number Publication Date
US20040046292A1 true US20040046292A1 (en) 2004-03-11

Family

ID=7659000

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/381,357 Abandoned US20040046292A1 (en) 2000-10-07 2001-09-28 Cooling element for shaft furnaces
US11/505,743 Abandoned US20070013113A1 (en) 2000-10-07 2006-08-16 Cooling element for shaft furnaces

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/505,743 Abandoned US20070013113A1 (en) 2000-10-07 2006-08-16 Cooling element for shaft furnaces

Country Status (16)

Country Link
US (2) US20040046292A1 (ru)
EP (1) EP1322790B1 (ru)
JP (1) JP2004511745A (ru)
KR (1) KR20030033088A (ru)
CN (1) CN1203192C (ru)
AT (1) ATE299951T1 (ru)
AU (2) AU2001289934B2 (ru)
BR (1) BR0114306A (ru)
CA (1) CA2423877A1 (ru)
DE (2) DE10049707A1 (ru)
MX (1) MXPA03003017A (ru)
PL (1) PL360691A1 (ru)
RU (1) RU2264590C2 (ru)
UA (1) UA76433C2 (ru)
WO (1) WO2002031211A1 (ru)
ZA (1) ZA200302304B (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050218569A1 (en) * 2002-08-20 2005-10-06 Siemens Vai Metals Tech Gmbh Cooling plate for metallurgic furnaces
US20070013113A1 (en) * 2000-10-07 2007-01-18 Peter Heinrich Cooling element for shaft furnaces
US20130203007A1 (en) * 2010-03-30 2013-08-08 Berry Metal Company Apparatus and methods for gas tight secondary copper stave support

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100902826B1 (ko) * 2002-11-08 2009-06-12 주식회사 포스코 고로 저부의 냉각제 압입방법
EP1469085A1 (de) * 2003-04-14 2004-10-20 Paul Wurth S.A. Ofenwand mit Kühlplatten für einen metallurgischen Ofen
LU91494B1 (en) * 2008-11-04 2010-05-05 Wurth Paul Sa Cooling plate for a metallurgical furnace and its method of manufacturing
DE102012013494A1 (de) * 2012-07-09 2014-01-09 Kme Germany Gmbh & Co. Kg Kühlelement für einen Schmelzofen
CN105769830B (zh) * 2016-03-30 2019-03-26 陕西科技大学 一种降温乳剂及其制备方法
EP3839075A1 (en) * 2019-12-18 2021-06-23 Paul Wurth S.A. Cooling plate for a metallurgical furnace

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252606A (en) * 1941-05-27 1941-08-12 Falcon Bronze Company Cooling plate for blast furnace inwalls and mantles
US2252605A (en) * 1938-03-02 1941-08-12 Falcon Bronze Company Cooling plate for blast furnace inwalls and mantles
US4572269A (en) * 1982-02-02 1986-02-25 Vsesojuzny Nauchno-Issledova-Telsky I Proektny Institut Po Ochistke Tekhnolo Method of manufacturing cooling plates for use in metallurgical furnaces and a cooling plate
US4938456A (en) * 1988-12-12 1990-07-03 Richards Raymond E Metallurgical panel structure

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479852A2 (fr) * 1980-04-02 1981-10-09 Touze Francois Perfectionnements aux dispositifs d'echanges thermiques a circulation de liquide pour le refroidissement des parois des hauts fourneaux
GB1564294A (en) * 1978-01-25 1980-04-02 Vni I Proek I Ochistke Tekhnol Plate cooler for shaft furnace
AT374497B (de) * 1982-05-25 1984-04-25 Voest Alpine Ag Kuehlplatte fuer metallurgische oefen sowie verfahren zu ihrer herstellung
JPH0663012B2 (ja) * 1988-08-10 1994-08-17 川崎製鉄株式会社 高炉炉体保護壁
RU2041265C1 (ru) * 1992-07-14 1995-08-09 Малое коллективное предприятие "Домна" Холодильник-кронштейн доменной печи
DE19503912C2 (de) * 1995-02-07 1997-02-06 Gutehoffnungshuette Man Kühlplatte für Schachtöfen, insbesondere Hochöfen
RU2151195C1 (ru) * 1999-02-01 2000-06-20 ОАО "Новолипецкий металлургический комбинат" Плитовый холодильник для металлургических печей и охлаждающий змеевик плитового холодильника
DE10049707A1 (de) * 2000-10-07 2002-04-11 Sms Demag Ag Kühlelement für Schachtöfen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252605A (en) * 1938-03-02 1941-08-12 Falcon Bronze Company Cooling plate for blast furnace inwalls and mantles
US2252606A (en) * 1941-05-27 1941-08-12 Falcon Bronze Company Cooling plate for blast furnace inwalls and mantles
US4572269A (en) * 1982-02-02 1986-02-25 Vsesojuzny Nauchno-Issledova-Telsky I Proektny Institut Po Ochistke Tekhnolo Method of manufacturing cooling plates for use in metallurgical furnaces and a cooling plate
US4938456A (en) * 1988-12-12 1990-07-03 Richards Raymond E Metallurgical panel structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070013113A1 (en) * 2000-10-07 2007-01-18 Peter Heinrich Cooling element for shaft furnaces
US20050218569A1 (en) * 2002-08-20 2005-10-06 Siemens Vai Metals Tech Gmbh Cooling plate for metallurgic furnaces
US7537724B2 (en) * 2002-08-20 2009-05-26 Siemens Vai Metals Technologies Gmbh & Co. Cooling plate for metallurgic furnaces
US20130203007A1 (en) * 2010-03-30 2013-08-08 Berry Metal Company Apparatus and methods for gas tight secondary copper stave support

Also Published As

Publication number Publication date
MXPA03003017A (es) 2004-01-29
UA76433C2 (en) 2006-08-15
DE10049707A1 (de) 2002-04-11
CA2423877A1 (en) 2003-03-27
BR0114306A (pt) 2003-10-28
RU2264590C2 (ru) 2005-11-20
DE50106812D1 (de) 2005-08-25
ZA200302304B (en) 2003-08-14
WO2002031211A1 (de) 2002-04-18
EP1322790B1 (de) 2005-07-20
AU2001289934B2 (en) 2007-02-15
ATE299951T1 (de) 2005-08-15
EP1322790A1 (de) 2003-07-02
CN1203192C (zh) 2005-05-25
CN1468318A (zh) 2004-01-14
KR20030033088A (ko) 2003-04-26
US20070013113A1 (en) 2007-01-18
AU8993401A (en) 2002-04-22
JP2004511745A (ja) 2004-04-15
PL360691A1 (en) 2004-09-20

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Legal Events

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AS Assignment

Owner name: SMS DEMAG AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HEINRICH, PETER;REEL/FRAME:014291/0119

Effective date: 20030407

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION