EP0429323B1 - Giess-Pfanne mit feuerfester Bodenbeschichtung zur Behandlung von Metall und Verfahren zur Herstellung einer derartigen feuerfesten Beschichtung - Google Patents

Giess-Pfanne mit feuerfester Bodenbeschichtung zur Behandlung von Metall und Verfahren zur Herstellung einer derartigen feuerfesten Beschichtung Download PDF

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Publication number
EP0429323B1
EP0429323B1 EP90403059A EP90403059A EP0429323B1 EP 0429323 B1 EP0429323 B1 EP 0429323B1 EP 90403059 A EP90403059 A EP 90403059A EP 90403059 A EP90403059 A EP 90403059A EP 0429323 B1 EP0429323 B1 EP 0429323B1
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EP
European Patent Office
Prior art keywords
refractory
ladle
lining
joints
elements
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
EP90403059A
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English (en)
French (fr)
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EP0429323B2 (de
EP0429323A1 (de
Inventor
Michel Beurotte
Pierre De Lafarge
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.)
Lafarge Refractories sollac
Original Assignee
Sollac SA
Lafarge Refractaires Monolithiques
Lorraine de Laminage Continu SA SOLLAC
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.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9387513&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0429323(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sollac SA, Lafarge Refractaires Monolithiques, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Priority to AT90403059T priority Critical patent/ATE99580T1/de
Publication of EP0429323A1 publication Critical patent/EP0429323A1/de
Application granted granted Critical
Publication of EP0429323B1 publication Critical patent/EP0429323B1/de
Publication of EP0429323B2 publication Critical patent/EP0429323B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings

Definitions

  • the present invention relates to a pocket for the production of a metal comprising a metal casing provided, on its internal surface, with a refractory lining of the wall and a refractory lining of the bottom carrying a tap hole.
  • the present invention also relates to a process for producing such a refractory bottom coating.
  • a continuous flow distributor with a coating, the bottom of which is in the form of a gutter of semi-cylindrical section, is known from document US-A-3333746.
  • the expansions generate, by a separation in the center, between the coating and the bottom of the pocket, a buckling of said bottom coating.
  • This type of deformation can lead to rapid deterioration and a fall in the bottom refractory lining when the slag is emptied.
  • the object of the present invention is to avoid, among other things, the separation of the bottom refractory lining from a pocket for the production of metal, for example steel.
  • the present invention thus relates to a pocket for the production of metal comprising a metal envelope provided, on its internal surface, with a refractory lining of the wall and a refractory lining of the bottom carrying a tap hole, characterized in that that the surface of the bottom refractory lining, in contact with the metal being produced, is formed by a concave surface having a generally spherical shape and at all points a slope directed towards the tap hole, said tap hole being eccentric with respect to the center of said bottom surface.
  • the bottom refractory lining consists of at least one assembly of independent elements separated by seals, said independent elements obtained by molding being produced and arranged so as to create an arch effect when the pocket is overturned.
  • Fig. 1 shows the lower part of a pocket for the production of metal, for example steel, comprising a metal casing 1, for example cylindrical, provided on its internal wall 2 with a refractory lining of wall 3 and d '' a refractory bottom coating 4 provided with a tap hole 5.
  • a metal casing 1 for example cylindrical, provided on its internal wall 2 with a refractory lining of wall 3 and d '' a refractory bottom coating 4 provided with a tap hole 5.
  • the bottom refractory lining 4 is composed of a refractory layer whose surface 6 in contact with the metal to be produced is a concave surface having at all points a slope directed towards the taphole 5.
  • the concave shape 6 of the bottom refractory lining 4 creates a vault effect when the pocket is overturned and therefore the vault effect prevents the separation of said bottom refractory lining 4.
  • the bottom refractory lining 4 consists of an assembly of several independent elements 4a separated by joints 7 of refractory concrete.
  • the independent elements 4a constituting the bottom refractory lining 4 are produced, for example by molding, and each have a specific shape for readjustment with respect to each other in the bottom of the metal envelope 1 of the pocket. Their arrangement and shape are determined so as to obtain a vault effect when the pocket is overturned.
  • the seals 7 are preferably placed, on the one hand, concentrically with the taphole 5 and, on the other hand, radiating with respect to this same taphole, said radiating seals being further offset from a seal concentric with the 'other.
  • the lateral faces of the independent elements 4a are provided with grooves 8 forming on the seals 7, projections which block the sliding of said elements 4a relative to each other.
  • the grooves 8 extend substantially parallel to the surface of the pocket bottom.
  • the independent elements are grouted with a refractory concrete with permanent variation of positive residual dimension, the other physical properties of the sealing concrete are close to those of the refractory material used for the production of the independent elements 4a.
  • the sealing concrete which forms the joints 7 is arranged so as to balance or compensate for expansion deformations due to the geometry of the set of independent elements 4a.
  • the refractory wall lining comprises at least one safety layer 10 and at least one wear layer 11
  • the bottom refractory lining comprises at least one safety layer 12 and at least one wear layer 13.
  • the wear layers (11, 13) are made of refractory bricks, the quality of which is determined by the conditions of use and the stresses undergone in the various parts of the pocket refractory lining.
  • These bricks can be made from aggregates, in particular aluminous, dolomite and magnesia.
  • the bricks constituting the safety layer 10 and the wear layer 11, for example of semi-universal format, are supported on an external shoulder 14 of an annular ramp 15 for starting to build the bricks of the refractory wall covering.
  • the outer shoulder 14 defines two helical bearing surfaces 16 and 17 respectively.
  • the support surface 16 has the width of the wall security layer 10 and the support surface 17 has the width of the wall wear layer 11.
  • outer shoulder 14 is a means of peripheral locking of the security layer 12 of the pocket bottom.
  • the safety layer 12 of the pocket bottom on the bottom of the pocket is deposited, in the space delimited by the annular ramp 15, the safety layer 12 of the pocket bottom, of lenticular shape and having a flat face 12a sealed on the internal face of the bottom of the metal casing 1 and a face 12b having a sufficiently spherical concave surface having at all points a slope directed towards the taphole 5.
  • the bottom wear layer 13 of refractory bricks which matches the shape of the concavity.
  • the surface 13b of the bottom wear layer 13, in contact with the metal in production, defines a sphere whose center is located on the longitudinal axis of the tap hole 5.
  • the bottom wear layer 13, bearing on the concave surface 12b substantially spherical of the bottom safety layer 12, has, by a vault effect, a tendency to press against said safety layer 12 during thermal expansion, which ensures its mechanical strength when the pocket is overturned.
  • the annular ramp 15 and the bottom safety layer 12 are both made of the same material which is generally an aluminous concrete based on andalusite. This refractory concrete must have good mechanical strength when cold and acceptable pyroscopic resistance.
  • Fig.4 is a top view of the assembly formed of the annular ramp 15 and the bottom security layer 12.
  • the annular ramp 15, on which is molded the outer shoulder 14 forming the two helical ramps respectively 16 and 17 for starting the masonry of the bricks of the refractory wall covering is cast on site.
  • the bottom security layer 12 consists of a set of elements 20 forming a mosaic and jointed with a concrete of coefficient of thermal expansion slightly higher than the coefficient of thermal expansion of the refractory material constituting said independent elements 20.
  • the other physical properties of the sealing concrete constituting the joints 21 between the independent elements 20 are close to those of the refractory material used for the production of said independent elements 20.
  • the seals 21 are arranged so as to balance or compensate for the expansion deformations due to the geometry of all the independent elements 20.
  • the seals 21 are preferably placed, on the one hand concentrically with the tap hole 5 and on the other hand radiating with respect to this same tap hole 5, the radiating joints being moreover staggered with respect to each other.
  • the lateral faces of the independent elements 20 are also provided with a groove 22 which forms, on the cast seals 21, protrusions which block the sliding of the independent elements 20 of the security layer 12 relative to each other.
  • a mold 30 formed as a template for the refractory lining 4 at the bottom or the security layer 12 at the bottom.
  • the mold 30 consists of a cylinder 31 placed on a convex surface 32 producing the curve of the surface of the refractory lining 4 at the bottom or the safety layer 12 at the bottom of the pocket.
  • the mold 30 is partitioned with vertical walls 33 whose section corresponds to the shape of the seals (7, 21), said vertical walls 33 being placed so as to determine compartments forming molds for the elements (4a, 20) respectively of the refractory lining (4) for the bottom or the security layer 12.
  • the elements (4a, 20) of specific shape are referenced. They together constitute either a refractory lining 4 at the bottom, or a security layer 12 at the bottom with a homogeneous physical characteristic.
  • the concave shape of the surface in contact with the metal to be produced is of substantially spherical shape
  • other shapes would be suitable such as for example a cylindrical or ogival shape, these shapes allowing an arching of the bottom refractory lining and its mechanical strength.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Cookers (AREA)

Claims (11)

1. Gießpfanne zur Erschmelzung von Metall, mit einer Metall hülle (1), die auf ihrer Innenseite mit einer hochschmelzenden Wandauskleidung (3, 10, 11) und einer hochschmelzenden Bodenauskleidung (4, 12, 13), welche ein Gießloch (5) trägt, versehen ist, dadurch gekennzeichnet, daß die mit dem in Erschmelzung befindlichen Metall in Berührung stehende Oberfläche der hochschmelzenden Bodenauskleidung (4, 12, 13) durch eine konkave Oberfläche gebildet ist, die eine sphärische allgemeine Form und an allen Punkten eine zum Gießloch (5) hin gerichtete Neigung aufweist, wobei das Gießloch (5) exzentrisch in Bezug auf die Mitte der Bodenoberfläche (4, 12, 13) gesetzt ist.
2. Gießpfanne nach Anspruch 1, dadurch gekennzeichnet, daß die hochschmelzende Bodenauskleidung (4) der Gießpfanne durch wenigstens eine Zusammenfügung unabhängiger Elemente (4a) gebildet ist, welche durch Stoßstellen (7) getrennt sind.
3. Gießpfanne nach Anspruch 1, dadurch gekennzeichnet, daß die hochschmelzende Bodenauskleidung wenigstens eine Sicherheitsschicht (12) und wenigstens eine Verschleißschicht (13) aufweist , wobei die Sicherheitsschicht (12) durch eine Zusammenfügung von unabhängigen Elementen (20) gebildet ist, die durch Stoßstellen (21) getrennt sind.
4. Gießpfanne nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß in der Zusammenfügung von unabhängigen Elementen (4a, 20), welche die hochschmelzende Bodenauskleidung (4,12) bilden, die unabhängigen Elemente (4a, 20) so vorgesehen und angeordnet sind, daß sie einen Gewölbeeffekt erzeugen, wenn die Gießpfanne umgedreht wird.
5. Gießpfanne nach irgendeinem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die unabhängigen Elemente (4a, 20) durch Gießen gewonnen sind.
6. Gießpfanne nach irgendeinem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die unabhängigen Elemente (4a, 20) Seitenflächen aufweisen, die mit wenigstens einer Kehle (8, 22) versehen sind, die sich im wesentlichen parallel zur Bodenfläche der Gießpfanne erstreckt.
7. Gießpfanne nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die unabhängigen Elemente (4a, 20) mit einem Beton mit permanenter positiver remanenter Maßänderung vergossen sind.
8. Gießpfanne nach irgendeinem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Aufbau der unabhängigen Elemente (4a, 20) ein Mosaik bildet, von deren Stoßstellen (7, 21) die einen konzentrisch zum Gießloch (5) und die anderen strahlenförmig in Bezug auf die Gießlöcher (5) sind, wobei die strahlenförmigen Stoßstellen von einer konzentrischen stoßstelle zur anderen versetzt sind.
9. Gießpfanne nach Anspruch 3, dadurch gekennzeichnet, daß die Sicherheitsschicht (12) von einem ringförmigen Gürtel (15) umgeben ist, der geeignet ist, eine Mauerungsablauffläche (16, 17) für die hochschmelzende Auskleidung (10, 11) der Wand der Metallhülle (1) zu bilden.
10. Gießpfanne nach Anspruch 9, dadurch gekennzeichnet, daß der ringförmige Gürtel (15) mit im wesentlichen vierseitigem Querschnitt eine äußere Schulter (14) aufweist, welche wenigstens eine wendelförmige Anlagefläche (16,17) bildet, wobei die Anlagefläche (16, 17) eine Breite hat, die der Dicke wenigstens einer hochschmelzenden Auskleidungsschicht (10, 11) der Wand entspricht.
11. Verfahren zur Herstellung einer hochschmelzenden Auskleidung für einen Gießpfannenboden nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß
- eine Form (30) hergestellt wird, die durch einen vorzugsweise im wesentlichen sphärischen konvexen Boden (32) gebildet ist und vertikale Wände (33) aufweist, die Fächer bilden, welche der Geometrie der hochschmelzenden Bodenauskleidungselemente (4, 12) entsprechen, wobei die Wände (33) einen Querschnitt haben, der demjenigen der Stoßstellen (7, 21) entspricht,
- in jedes so gebildete Fach ein ausgewählter hochschmelzender Beton (34) gegossen wird,
- und nach dem Abbinden des Betons unter Etikettierung jedes der Elemente (4a, 20) der hochschmelzenden Bodenauskleidung ausgeformt wird.
EP90403059A 1989-11-17 1990-10-29 Giess-Pfanne mit feuerfester Bodenbeschichtung zur Behandlung von Metall und Verfahren zur Herstellung einer derartigen feuerfesten Beschichtung Expired - Lifetime EP0429323B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90403059T ATE99580T1 (de) 1989-11-17 1990-10-29 Giess-pfanne mit feuerfester bodenbeschichtung zur behandlung von metall und verfahren zur herstellung einer derartigen feuerfesten beschichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR898915128A FR2654661B1 (fr) 1989-11-17 1989-11-17 Poche pour l'elaboration d'un metal munie d'un revetement refractaire le fond et procede de realisation d'un tel revetement refractaire de fond.
FR8915128 1989-11-17

Publications (3)

Publication Number Publication Date
EP0429323A1 EP0429323A1 (de) 1991-05-29
EP0429323B1 true EP0429323B1 (de) 1994-01-05
EP0429323B2 EP0429323B2 (de) 1999-07-14

Family

ID=9387513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403059A Expired - Lifetime EP0429323B2 (de) 1989-11-17 1990-10-29 Giess-Pfanne mit feuerfester Bodenbeschichtung zur Behandlung von Metall und Verfahren zur Herstellung einer derartigen feuerfesten Beschichtung

Country Status (12)

Country Link
US (1) US5948349A (de)
EP (1) EP0429323B2 (de)
JP (1) JPH0747204B2 (de)
AT (1) ATE99580T1 (de)
AU (1) AU624276B2 (de)
CA (1) CA2030128C (de)
DE (1) DE69005798T3 (de)
DK (1) DK0429323T4 (de)
FI (1) FI92982C (de)
FR (1) FR2654661B1 (de)
TR (1) TR27294A (de)
ZA (1) ZA909214B (de)

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FR2684905B1 (fr) * 1991-12-17 1994-02-18 Boulonnais Terres Refractaires Garnissage pour recipient tel que fond de poches de coulee.
US5879616A (en) * 1996-01-22 1999-03-09 Harbison-Walker Refractories Company Metallurgical vessel and method of using the same
DE19802222C2 (de) * 1998-01-22 2002-08-08 Intocast Ag Feuerfest Produkte Behälter für metallurgische Schmelzen
DE19923419A1 (de) * 1999-05-21 2000-11-23 Truetzschler Gmbh & Co Kg Vorrichtung an einer Spinnereivorbereitungsmaschine, z. B. Karde, Reiniger o. dgl., zur Messung von Abständen an Garnituren
JP2004511347A (ja) 2000-02-08 2004-04-15 フォセコ・インターナショナル・リミテッド 溶融金属取扱容器
US11249095B2 (en) 2002-04-15 2022-02-15 Ventana Medical Systems, Inc. Automated high volume slide processing system
US7468161B2 (en) * 2002-04-15 2008-12-23 Ventana Medical Systems, Inc. Automated high volume slide processing system
US8110142B2 (en) * 2008-02-18 2012-02-07 North American Refractories Co. High yield ladle bottoms
US9005518B2 (en) 2008-02-18 2015-04-14 North American Refractories Co. High yield ladle bottoms
CN102209889B (zh) 2008-11-12 2015-05-13 文塔纳医疗系统公司 用于加热载持标本的载玻片的方法及设备
CN101791694A (zh) * 2010-04-08 2010-08-04 安徽省凤形耐磨材料股份有限公司 铸造用扇形坡面缓冲浇口杯
CN102328068A (zh) * 2011-07-08 2012-01-25 南阳汉冶特钢有限公司 一种钢包包底砌筑方法
CN102350495A (zh) * 2011-10-17 2012-02-15 中钢集团邢台机械轧辊有限公司 长寿命的球化处理包
USD661716S1 (en) 2012-01-05 2012-06-12 North American Refractories Company High-yield ladle bottom
USD661717S1 (en) 2012-01-05 2012-06-12 North American Refractories Company High-yield ladle bottom
HUE032636T2 (en) * 2013-01-07 2017-10-30 Refractory Intellectual Property Gmbh & Co Kg Refractory ceramic socket
PL2796227T3 (pl) * 2013-04-26 2017-01-31 Refractory Intellectual Property Gmbh & Co. Kg Dno kadzi i kadź
CN103334047A (zh) * 2013-07-09 2013-10-02 曲沃县民政福利企业有限公司 具有引流装置的球化包盖
CN105793690B (zh) 2013-12-13 2020-01-03 文塔纳医疗系统公司 生物样本的自动化组织学处理及相关的技术
US9724756B2 (en) * 2014-05-09 2017-08-08 North America Refractories Company Refractory component for lining a metallurgical vessel
CN104384488A (zh) * 2014-11-04 2015-03-04 西宁特殊钢股份有限公司 一种防止钢水卷渣的钢包设计方法
KR101701982B1 (ko) * 2015-10-30 2017-02-02 주식회사 포스코 정련 장치 및 방법
US12343792B2 (en) * 2019-11-14 2025-07-01 Saint-Gobain do Brasil Produtos Industriais e para Construção Ltda. Method for coating steel pan bottoms and steel pan bottoms

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US1292582A (en) * 1915-09-22 1919-01-28 Westinghouse Electric & Mfg Co Method of reclaiming turnings of readily-oxidizable metals.
US3333764A (en) * 1966-02-01 1967-08-01 Vendo Co Double lock coin box for vending machines
US3333746A (en) * 1966-05-19 1967-08-01 Harbison Walker Refractories Tundish ladles
AT319988B (de) * 1970-06-13 1975-01-27 Didier Werke Ag Feuerfeste Bodenauskleidung für metallurgische Gefäße
JPS5415877Y2 (de) * 1974-08-28 1979-06-25
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Also Published As

Publication number Publication date
CA2030128C (fr) 1996-10-29
ZA909214B (en) 1992-06-24
TR27294A (tr) 1994-12-28
EP0429323B2 (de) 1999-07-14
AU624276B2 (en) 1992-06-04
DE69005798D1 (de) 1994-02-17
FI92982C (fi) 1995-02-10
EP0429323A1 (de) 1991-05-29
ATE99580T1 (de) 1994-01-15
US5948349A (en) 1999-09-07
DE69005798T3 (de) 2000-01-13
CA2030128A1 (fr) 1991-05-18
JPH0747204B2 (ja) 1995-05-24
FR2654661B1 (fr) 1994-06-10
AU6588490A (en) 1991-05-30
DK0429323T3 (da) 1994-05-16
FI92982B (fi) 1994-10-31
FI905658L (fi) 1991-05-18
FI905658A0 (fi) 1990-11-15
FR2654661A1 (fr) 1991-05-24
JPH03169473A (ja) 1991-07-23
DK0429323T4 (da) 1999-11-29
DE69005798T2 (de) 1994-04-28

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