EP0475009A1 - Kühlplatte für einen Schachtofen - Google Patents

Kühlplatte für einen Schachtofen Download PDF

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Publication number
EP0475009A1
EP0475009A1 EP91111327A EP91111327A EP0475009A1 EP 0475009 A1 EP0475009 A1 EP 0475009A1 EP 91111327 A EP91111327 A EP 91111327A EP 91111327 A EP91111327 A EP 91111327A EP 0475009 A1 EP0475009 A1 EP 0475009A1
Authority
EP
European Patent Office
Prior art keywords
coping
cavity
cast iron
panel
cooling
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Withdrawn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
EP91111327A
Other languages
English (en)
French (fr)
Inventor
Marc Solvi
Roger Thill
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.)
Paul Wurth SA
Original Assignee
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
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP0475009A1 publication Critical patent/EP0475009A1/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Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the present invention relates to a cooling panel for the interior lining of the wall of a shaft furnace, comprising a cast iron plate in which are embedded cooling pipes connected to a cooling circuit and a projecting coping extending towards the inside the oven.
  • each panel generally has, on the inside, a projecting part, called a coping or nose, and intended to support the refractory layer.
  • copings are part of the mass of the panel and are therefore made of cast iron. To ensure their mechanical stability and guarantee a satisfactory service life, they are internally cooled by a connection to the cooling circuit. Despite this, we cannot keep the refractory layer for more than two years. However, this does not mean that the refractory layer has to be redone, since the oven can still operate for years with "bare" cooling panels. Indeed, after the disappearance of the refractory layer, it forms on the panels layers of solidified slag which disappear and reform successively.
  • the object of the present invention is to provide a new cooling panel whose edge is intended to disappear with the refractory masonry.
  • the cooling panel proposed by the present invention is essentially characterized in that the coping is made of uncooled refractory steel, in that it is independent of the cast iron plate and detachably fixed to the latter.
  • the coping is engaged in a cavity of the plate, the bottom of this cavity having the shape of a quarter of cylindrical surface with horizontal axis, while the end of the coping is of complementary cylindrical shape. .
  • the coping can be retained in its cavity by a horizontal metal bar arranged in the axis of the cylindrical surface of the coping and the cavity.
  • the mass of the refractory lining resting on the cantilever part of the coping thus exerts a moment of rotation on the coping around this bar which blocks the coping in its cavity by applying the two cylindrical surfaces one on the other. It is preferable to have a mass between these two cylindrical surfaces. high thermal conductivity.
  • the reference 10 represents a part of a cast iron plate of a cooling panel comprising interior cooling pipes not shown.
  • the reference 12 designates a coping which projects from the interior surface of the plate 10 and which is intended to support the refractory coating applied to the interior surface of the cooling panels. Unlike known cooling panels, the coping 12 is independent of the plate 10 and does not have internal cooling. According to another particularity, the coping 12 is detachably fixed on the plate 10.
  • the coping 12 is partially embedded in a cavity 14, the bottom of which has the shape of a quarter of cylindrical surface, the recessed part of the coping having a complementary cylindrical surface. Maintaining the coping 12 in the cavity 14 can be ensured by a round bar engaged horizontally along the axis of the cylindrical surfaces of the coping and the cavity 14 in a cylindrical housing formed by a semi-cylindrical groove of the coping and a semi-cylindrical groove complementary to the plate 10.
  • This bar 16 forms thus a point of rotation and the moment exerted by the refractory mass on the nose of the coping 12 applies the cylindrical surface of the coping 12 on the complementary cylindrical surface of the cavity 14, thus ensuring a thermal transfer between the cooled plate 10 and the uncooled coping 12.
  • the coping 12 Since the coping 12 is not cooled by water, it wears out as the refractory lining which it supports disappears. By an appropriate choice of the material of the fixing bar 16, it can even be arranged for this bar to disappear by melting and by wear after the disappearance of the refractory lining, so that the coping 12 is no longer retained in its cavity 14 and can therefore fall.
  • the coping 12 since the coping 12 is no longer cooled, it must nevertheless be ensured that it holds as long as the refractory lining. To this end, it is made of refractory steel and it is arranged so that there is a good thermal transfer between the mass of the plate 10 and the coping. To this end, the complementary cylindrical surfaces of the bottom of the cavity 14 and of the recessed part of the coping 12, as well as the force by which these surfaces are applied to one another under the effect of the moment of rotation around of the bar 16 are very beneficial. In addition, it is preferable, and even recommendable, to provide between the bottom of the cavity 14 and the recessed part of the coping 12 a mass with high thermal conductivity.

Landscapes

  • 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)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Blast Furnaces (AREA)
EP91111327A 1990-08-08 1991-07-08 Kühlplatte für einen Schachtofen Withdrawn EP0475009A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87784A LU87784A1 (fr) 1990-08-08 1990-08-08 Panneau de refroidissement pour four a cuve
LU87784 1990-08-08

Publications (1)

Publication Number Publication Date
EP0475009A1 true EP0475009A1 (de) 1992-03-18

Family

ID=19731249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111327A Withdrawn EP0475009A1 (de) 1990-08-08 1991-07-08 Kühlplatte für einen Schachtofen

Country Status (4)

Country Link
EP (1) EP0475009A1 (de)
FI (1) FI913701A7 (de)
LU (1) LU87784A1 (de)
TR (1) TR25553A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0971193A1 (de) * 1998-07-10 2000-01-12 Daido Tokushuko Kabushiki Kaisha Wassergekühlter Arm

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2257068A1 (en) * 1974-01-03 1975-08-01 Hoogovens Ijmuiden Bv Cooling panels for blast furnaces - providing cooling for internal refractory lining support ribs
FR2447401A1 (fr) * 1979-01-27 1980-08-22 Hoesch Werke Ag Element de refroidissement pour un four metallurgique et son procede de fabrication
EP0098720A2 (de) * 1982-06-28 1984-01-18 Deere & Company Ofenplatte zum Gebrauch in einem Lichtbogenofen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2257068A1 (en) * 1974-01-03 1975-08-01 Hoogovens Ijmuiden Bv Cooling panels for blast furnaces - providing cooling for internal refractory lining support ribs
FR2447401A1 (fr) * 1979-01-27 1980-08-22 Hoesch Werke Ag Element de refroidissement pour un four metallurgique et son procede de fabrication
EP0098720A2 (de) * 1982-06-28 1984-01-18 Deere & Company Ofenplatte zum Gebrauch in einem Lichtbogenofen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Soviet Inventions Illustrated, Section m, week 8643, 06-11-86, Derwent Publications Ltd., London GB, No. 86-283310/43; & SU,A,749095 (DNEPR METAL WKS) 28-02-86. *
Stahl und Eisen, Vol. 110, No. 5, Mars 1986, Dusseldorf, DE; PETER HEINRICH: "Hochofenpanzerkuhlung-bauliche ausfurung und kosten von kuhlsystemen", page 205 - page 210; figure 4. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0971193A1 (de) * 1998-07-10 2000-01-12 Daido Tokushuko Kabushiki Kaisha Wassergekühlter Arm
US6132206A (en) * 1998-07-10 2000-10-17 Daido Tokushuko Kabushiki Kaisha Water cooled finger for pre-heater of furnace top

Also Published As

Publication number Publication date
FI913701L (fi) 1992-02-09
FI913701A0 (fi) 1991-08-02
LU87784A1 (fr) 1992-03-11
TR25553A (tr) 1993-05-01
FI913701A7 (fi) 1992-02-09

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