EP0083138B1 - Konvertergefäss zur Stahlerzeugung - Google Patents

Konvertergefäss zur Stahlerzeugung Download PDF

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Publication number
EP0083138B1
EP0083138B1 EP19820201643 EP82201643A EP0083138B1 EP 0083138 B1 EP0083138 B1 EP 0083138B1 EP 19820201643 EP19820201643 EP 19820201643 EP 82201643 A EP82201643 A EP 82201643A EP 0083138 B1 EP0083138 B1 EP 0083138B1
Authority
EP
European Patent Office
Prior art keywords
vessel
wall
flange
steel
layers
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
Application number
EP19820201643
Other languages
English (en)
French (fr)
Other versions
EP0083138A1 (de
Inventor
Dick C. J. Zuyderduyn
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.)
Tata Steel Ijmuiden BV
Original Assignee
Hoogovens Groep BV
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 Hoogovens Groep BV filed Critical Hoogovens Groep BV
Publication of EP0083138A1 publication Critical patent/EP0083138A1/de
Application granted granted Critical
Publication of EP0083138B1 publication Critical patent/EP0083138B1/de
Expired 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
    • 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
    • C21C5/44—Refractory linings

Definitions

  • the invention relates to a converter vessel for steel preparation, having a vessel wall and refractory permanent and working linings.
  • permanent lining is meant the layer(s) of the brickwork which is (are) applied very securely to the vessel wall and which is (are) in principle maintained unchanged in a repair to the lining.
  • the working lining is subjected to wear and attack during the steel making, and must therefore be replaced from time to time.
  • the vessel wall has an outwardly convex bottom and a side wall, as seen in the vertical position of the converter.
  • the brickwork of the linings is applied in horizontal layers, and on the bottom the linings are installed in layers which generally follow the shape of the bottom.
  • a flange or horizontal ring secured to the vessel wall, which supports the permanent lining of the side wall.
  • the permanent lining of the vessel bottom exerts high pressures on the specially shaped connecting bricks, so that the latter are crushed and lose their supporting function. Furthermore, this high expansion pressure may also continue as far as the welded-on steel ring, which is pushed upwards as a result. This in turn pushes up the permanent lining of the side wall, so that cohension in the permanent lining is lost.
  • the object of the invention is to provide a vessel in which these difficulties are avoided or mitigated.
  • the invention consists in that the said horizontal flange secured to the vessel wall forms part of a rigid hollow tubular steel structure which also includes a support wall extending obliquely relative to the adjacent vessel wall and transversely to the adjacent parts of the layers of the permanent lining on the vessel bottom.
  • This tubular steel structure can provide very great rigidity so that it cannot be pushed upwards by expansions in the bottom lining.
  • the expansion pressure is thus completely absorbed by the vessel wall and is therefore no longer exerted on the permanent lining of the vessel wall.
  • this construction can avoid the use of the expensive specially shaped bricks at the transition region, which represents a considerable saving in the costs of the vessel lining.
  • the hollow steel tubular structure is filled with refractory concrete. Suitable openings can be provided in the structure for this purpose.
  • the layers of brickwork of the permanent lining in the vessel bottom cannot all extend right up to the said support wall of the tubuluar structure, due to the curvature of the transition region from the bottom towards the side wall.
  • the lowest layer is terminated before it reaches this support wall, and the space thereby formed, between the subsequent layers and the support wall of the tubular structure may be filled with concrete.
  • the lowest layer now expands, for whatever reason, then its expansion pressure will be transmitted to this concrete region which may be crushed as a result.
  • an additional peripheral steel flange is provided extending transversely to the vessel bottom adjacent to the peripheral edge lowest layer of the permanent lining of the bottom, this flange having about the same height as this layer, and that the space between this flange and the hollow tubular structure is filled with refractory concrete, which is preferably anchored. Compressive forces in the lowest layer, resulting from its expansion, are not absorbed by the concrete, but are absorbed by the steel flange which in itself is a continuous ring.
  • the compressive forces transmitted by the different layers of brickwork in the vessel bottom to the said additional steel flange, and to the hollow tubular structure can be further reduced by ending these layers at a distance from the hollow tubular structure and/or the flange on the vessel bottom and by filling the spaces thus left free with a refractory ramming mass. Since the layers of brickwork consist of individual bricks, a free space will generally be left at the edges of these layers in any case. Refractory ramming masses are generally fairly compressible, so that by their use the compressive forces acting on the steel tubular structure and on the flange can be limited.
  • a steel outer shell 1 comprising the vessel side wall, the transition region and the outwardly convex vessel bottom which are denoted as regions I, II and III respectively.
  • a permanent lining 2 and a working lining 3 are located against the side wall, inside the steel outer shell 1 of the vessel, both being constructed from bricks which are arranged in horizontal layers (courses).
  • the lining of the vessel bottom comprises three layers of permanent brickwork 4, 5 and 6 forming the permanent lining, together with a working lining 7.
  • the bricks of the bottom brickwork are laid in layers which follow the shape of the vessel bottom.
  • a horizontal steel ring 9 is welded to the outer shell 1, to form a peripherally extending flange extending inwardly to the width of the permanent lining of the side wall at the location of the transition between vessel wall I and transition region II.
  • the permanent lining 2 of the side wall I is constructed on this ring 9.
  • FIG. 2 shows the portion of the structure at the transition region II, on a larger scale.
  • a support wall 8 extends inwards obliquely from the outer shell 1 to the inner edge of the ring 9.
  • the wall 8 is welded securely to the ring 9 and the shell 1.
  • the portion of the shell 1 between the outer edges of the ring 9 and the wall 8, the wall 8 and the ring 9 thus form a rigid annular steel tubular structure.
  • the ring 9 is drilled at various points (not shown) to provide holes through which the space inside this tubular structure has been injected with refractory concrete 14.
  • This tubular structure extends peripherally around the vessel and provides a very strong structure capable of absorbing and resisting the forces exerted on expansion of the permanent lining layers 5, 6 of the bottom.
  • a peripheral steel flange 10 is welded to the bottom so as to extend transversely thereto as seen in Fig. 2, at the location of the transition from the vessel bottom III to the transition piece II.
  • This flange has a height which corresponds to the thickness of the lowest layer 4 of the bottom lining, and thus serves to absorb the forces arising on expansion of the layer 4.
  • the space thus left between the layer 5, the steel shell 1 of the vessel, the flange 10 and the support wall 8 is filled with concrete 11.

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)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Claims (5)

1. Konvertergefäß zur Stahlerzeugung mit (in Vertikalstellung des Gefäßes gesehen) einer Gefäßwand, die einen nach außen konvexen Boden und eine Seitenwand und feuerfeste Permanent-und Verschleißfutter aufweist, die auf der Seitenwand in horizontalen Schichten und am Boden in im allgemeinen der Form des Bodens folgenden Schichten angebracht sind, wobei eine Übergangszone der Gefäßwand zwischen dem Boden und der Seitenwand vorhanden ist, wo ein nach innen ragender periphärer, das Permanentfutter der Seitenwand tragender Stahlflansch an der Gefäßwand befestigt ist, dadurch gekennzeichnet, daß besagter Flansch Teil einer starren, hohlen rohrförmigen Stahlkonstruktion bildet, die auch eine periphäre, sich in bezug auf den angrezenden Teil der Gefäßwand schräg nach innen und in bezug auf die angrenzenden Teile der Schichten des Permanentfutters des Bodens transversal erstreckende Stützwand umfaßt.
2. Konvertergefäß gemäß Anspruch 1, in dem besagte hohle rohrförmige Stahlkonstruktion besagten Flansch, besagte Stützmauer und einen Teil besagter Gefäßwand, die sich zwischen den jeweiligen äußeren Enden besagten Flansches und besagter Stützwand erstreckt, umfaßt.
3. Konvertergefäß gemäß Anspruch 1 oder 2, in dem besagte hohle rohrförmige Stahlkonstruktion mit feuerfestem Beton gefüllt ist.
4. Konvertergefäß nach einem der Ansprüche 1 bis 3, mit einem weiteren periphären Stahlflansch, der sich vom Boden nach innen und transversal hiezu anschließend an die periphäre Kante der untersten Schicht des Permanentfutters des Bodens erstreckt, wobei die Höhe besagten weiteren Stahlflansches der Dicke besagter unterster Schicht entspricht und der Raum zwischen besagtem weiteren Stahlflansch und besagter hohler rohrförmiger Stahlkonstruktion mit eine Verlängerung besagter untersten Schicht bildenden Feuerfestbeton gefüllt ist.
5. Konvertergefäß nach einem der Ansprüche 1 bis 4, worin die Räume zwischen den Schichten des Permanentfutters des Bodens einerseits und der hohlen rohrförmigen Stahlkonstruktion und besagtem weiteren Stahlflansch anderseits mit feuerfester Stampfmasse gefüllt ist.
EP19820201643 1981-12-29 1982-12-21 Konvertergefäss zur Stahlerzeugung Expired EP0083138B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8105877 1981-12-29
NL8105877A NL8105877A (nl) 1981-12-29 1981-12-29 Convertervat voor de staalbereiding.

Publications (2)

Publication Number Publication Date
EP0083138A1 EP0083138A1 (de) 1983-07-06
EP0083138B1 true EP0083138B1 (de) 1985-05-29

Family

ID=19838623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820201643 Expired EP0083138B1 (de) 1981-12-29 1982-12-21 Konvertergefäss zur Stahlerzeugung

Country Status (3)

Country Link
EP (1) EP0083138B1 (de)
DE (1) DE3263945D1 (de)
NL (1) NL8105877A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104962682A (zh) * 2015-05-25 2015-10-07 丹东播磨耐火材料有限公司 转炉球型圆角肘部炉衬结构
RU2758600C1 (ru) * 2021-01-17 2021-11-01 Акционерное общество «ЕВРАЗ Нижнетагильский металлургический комбинат» (АО «ЕВРАЗ НТМК») Способ футеровки кислородного конвертера

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL277037A (de) * 1962-04-10 1900-01-01
DE1282043B (de) * 1963-03-14 1968-11-07 Demag Ag Arbeitsbuehne zum Ausmauern von metallurgischen Gefaessen
BE653159A (de) * 1963-09-26 1965-03-16
US3370840A (en) * 1965-07-30 1968-02-27 Harbison Walker Refractories Basic oxygen furnace construction
DE1807322A1 (de) * 1968-11-06 1972-02-24 Fried Krupp Huettenwerk Ag Auskleidung fuer metallurgische Gefaesse,insbesondere fuer Elektrolichtbogenoefen

Also Published As

Publication number Publication date
DE3263945D1 (en) 1985-07-04
EP0083138A1 (de) 1983-07-06
NL8105877A (nl) 1983-07-18

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