EP0429323B2 - 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
EP0429323B2
EP0429323B2 EP90403059A EP90403059A EP0429323B2 EP 0429323 B2 EP0429323 B2 EP 0429323B2 EP 90403059 A EP90403059 A EP 90403059A EP 90403059 A EP90403059 A EP 90403059A EP 0429323 B2 EP0429323 B2 EP 0429323B2
Authority
EP
European Patent Office
Prior art keywords
refractory
ladle
lining
independent elements
joints
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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EP0429323A1 (de
EP0429323B1 (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.)
Filing date
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(B2) "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 envelope provided, on its internal surface, a refractory wall lining and a lining bottom refractory with a tap hole.
  • the present invention also has for subject a process for producing such a coating background refractory.
  • a continuous flow distributor with a coating whose bottom is in the form of a gutter of semi-cylindrical section is known from document US-A-3,333,746.
  • a bottom refractory lining of a metal container in particular a degassing container of molten steel.
  • the container has an envelope metallic and a refractory bottom coating having a tap hole eccentric to the center of said bottom surface.
  • the tap hole is bordered with curb bricks to which are connected brick belts.
  • the metallic envelope has a bottom inclined towards the tap hole and the upper surface of the refractory lining in contact with liquid metal is parallel to the bottom of the envelope.
  • the dilations generate, by a detachment in the center, between the covering and the bottom of the pocket, a buckling of said bottom coating.
  • This type of deformation can cause rapid deterioration and falling coating background refractory when emptying the slag.
  • the object of the present invention is to avoid, among others, the peeling of the coating bottom refractory of a pocket for the elaboration of metal, for example steel.
  • the object of the present invention is thus a pocket for the production of metal comprising a metal envelope provided, on its internal surface, a refractory wall lining and a lining bottom refractory with a tap hole, offset from the center of the surface of said refractory lining, characterized in that the metal shell has a flat bottom and horizontal and the refractory lining surface of bottom in contact with the metal being processed, is formed by a concave surface having a shape general spherical and at any point a directed slope towards the tap hole.
  • the refractory lining bottom consists of at least one assembly of elements independent separated by seals, said independent elements obtained by molding being produced and arranged in such a way as to create a vault when the pocket is overturned.
  • the refractory lining is consisting of at least one layer of security and at least minus a wear layer, the safety layer being constituted by an assembly of independent elements.
  • a pocket for making metal for example of steel, comprising a metal casing 1, by cylindrical example, provided on its internal wall 2 with a refractory lining of wall 3 and a lining bottom refractory 4 provided with a taphole 5.
  • the bottom refractory lining 4 is composed a refractory layer whose surface 6 in contact with the metal to be worked out is a concave surface presenting at any point a slope directed towards the hole of casting 5.
  • the concave shape 6 of the refractory lining of bottom 4 creates an arch effect when the pocket is overturned and therefore the arch effect prevents detachment said bottom refractory lining 4.
  • the bottom refractory lining 4 is consisting of an assembly of several independent elements 4a separated by joints 7 of refractory concrete.
  • the independent elements 4a constituting the coating background refractory 4 are made, by example by molding, and each have a specific shape for readjustment to each other others in the bottom of the metal casing 1 of the poached. Their arrangement and shape are determined so as to obtain a vault effect when the pocket is overturned.
  • the seals 7 are preferably placed, of a on the one hand, concentrically with tap hole 5 and, on the other part, radiating from this same tap hole, said radiating joints being further offset by one concentric joint to each other.
  • the side faces of 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 to others.
  • the grooves 8 extend substantially parallel on the surface of the pocket bottom.
  • the independent elements are jointed with permanently variable refractory concrete positive residual, other physical properties sealing concrete are close to those refractory material used for the realization of independent elements 4a.
  • the sealing concrete which forms the joints 7 is arranged to balance or compensate for deformations of expansion due to the geometry of the assembly independent elements 4a.
  • the refractory lining of the wall has at least one security layer 10 and at least minus a wear layer 11, and the refractory lining background has at least one security 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 different parts of the pocket refractory lining. These bricks can be made from aggregates, especially aluminous, dolomite, magnesia.
  • the bricks constituting the security layer 10 and the wear layer 11, for example of semi format universal, are supported on an external shoulder 14 of an annular ramp 15 of masonry start bricks of the refractory lining of the wall.
  • the outer shoulder 14 defines two surfaces helical supports 16 and 17 respectively.
  • the bearing surface 16 has the width of the layer 10 security wall and the bearing surface 17 has the width of the wear layer 11 of the wall.
  • outer shoulder 14 is a means of peripheral blocking of the security layer 12 pocket bottom.
  • the pocket bottom security layer 12 On the bottom of the pocket is deposited, in the space delimited by the annular ramp 15, the pocket bottom security layer 12, shaped lenticular and having a sealed planar face 12a on the inner face of the bottom of the metal casing 1 and a face 12b having a concave surface sufficiently spherical having at all points a slope towards the tap hole 5.
  • the layer wear base 13 On the concave face 12b is masonry the layer wear base 13 in refractory bricks which marries the shape of the concavity.
  • the surface 13b of the bottom wear layer 13, in contact with the metal being worked on, defines a sphere whose center is located on the longitudinal axis tap hole 5.
  • the annular ramp 15 and the safety layer 12 both consist of the same material which is generally an aluminous concrete based Andalusite. This refractory concrete must have good cold mechanical resistance and pyroscopic resistance acceptable.
  • Fig.4 is a top view of the assembly formed of the annular ramp 15 and the safety layer 12 background.
  • the annular ramp 15, on which is molded the outer shoulder 14 forming the two ramps helical starting 16 and 17 respectively bricklaying of refractory lining of wall is cast on site.
  • the security layer 12 background consists of a set of elements 20 forming a mosaic and grouted with concrete coefficient of thermal expansion slightly higher than the coefficient of thermal expansion refractory material constituting said elements independent 20.
  • the other physical properties of sealing concrete constituting the joints 21 between the independent elements 20 are close to those of refractory material used for making said independent elements 20.
  • the seals 21 are arranged so as to balance or to compensate for the expansion deformations due to the geometry of the set of 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 hole of casting 5, the radiating joints being more placed in staggered relative to each other.
  • the lateral faces of the independent elements 20 are also provided with a groove 22 which forms, on the seals 21 cast, projections which block the sliding of the independent elements 20 of the layer security 12 relative to each other.
  • a mold 30 formed in a template is used. of the refractory lining 4 or the layer 12 bottom security.
  • the mold 30 is made up of a cylinder 31 placed on a convex surface 32 producing the curve of the surface of the refractory lining 4 bottom or 12 bottom security layer of pocket.
  • the mold 30 is partitioned with walls vertical 33 whose cross section corresponds to the shape 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) at the bottom or security layer 12.
  • the elements (4a, 20) of specific shape are referenced. They together constitute either a refractory lining 4 at the bottom, i.e. a layer of security 12 of background of homogeneous physical characteristic.
  • such a configuration ensures good flow of steel to the tap hole, point bottom of the surface of the refractory lining of the bottom of the pocket being formed by said tap hole.

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 Metallhülle (1), die auf ihrer Innenseite mit einer hochschmelzenden Wandauskleidung (3, 10, 11) und einer hochschmelzenden Bodenauskleidung (4, 12, 13), welche ein Gießloch (5) trägt, welches exentrisch in Bezug auf die Mitte der Oberfläche der hochschmelzenden Bodenauskleidung (4, 12, 13) angeordnet ist, dadurch gekennzeichnet, daß die Metallhülle (1) einen ebenen und horizontalen Boden aufweist, und die Oberfläche der hochschmelzenden Bodenauskleidung (4, 12, 13), die mit dem in Erschmelzung befindlichen Metall in Berühung steht, durch eine konkave Fläche gebildet ist, welche eine allgemein sphärische Form und an allen Stellen eine zum Gießloch (5) gerichtete Neigung aufweist.
  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 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, welche eine plane Fläche aufweist, die für ein Inanlagekommen am Boden der Pfanne eingerichtet ist, 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
FR8915128 1989-11-17
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.

Publications (3)

Publication Number Publication Date
EP0429323A1 EP0429323A1 (de) 1991-05-29
EP0429323B1 EP0429323B1 (de) 1994-01-05
EP0429323B2 true 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
US7468161B2 (en) 2002-04-15 2008-12-23 Ventana Medical Systems, Inc. Automated high volume slide processing system
US11249095B2 (en) 2002-04-15 2022-02-15 Ventana Medical Systems, Inc. Automated high volume slide processing system
US9005518B2 (en) 2008-02-18 2015-04-14 North American Refractories Co. High yield ladle bottoms
US8110142B2 (en) * 2008-02-18 2012-02-07 North American Refractories Co. High yield ladle bottoms
WO2010056883A1 (en) 2008-11-12 2010-05-20 Ventana Medical Systems, Inc. Methods and apparatuses for heating slides carrying specimens
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
PL2752260T3 (pl) 2013-01-07 2017-07-31 Refractory Intellectual Property Gmbh & Co. Kg Ognioodporne dno ceramiczne
HUE030349T2 (en) * 2013-04-26 2017-05-29 Refractory Intellectual Property Gmbh & Co Kg Casting sink and mold
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
CN117054211A (zh) 2013-12-13 2023-11-14 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

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Also Published As

Publication number Publication date
ATE99580T1 (de) 1994-01-15
EP0429323A1 (de) 1991-05-29
FR2654661A1 (fr) 1991-05-24
FI905658A (fi) 1991-05-18
DK0429323T4 (da) 1999-11-29
US5948349A (en) 1999-09-07
CA2030128C (fr) 1996-10-29
FR2654661B1 (fr) 1994-06-10
EP0429323B1 (de) 1994-01-05
FI905658A0 (fi) 1990-11-15
AU624276B2 (en) 1992-06-04
FI92982C (fi) 1995-02-10
CA2030128A1 (fr) 1991-05-18
DE69005798D1 (de) 1994-02-17
FI92982B (fi) 1994-10-31
JPH0747204B2 (ja) 1995-05-24
DE69005798T3 (de) 2000-01-13
TR27294A (tr) 1994-12-28
AU6588490A (en) 1991-05-30
DK0429323T3 (da) 1994-05-16
ZA909214B (en) 1992-06-24
DE69005798T2 (de) 1994-04-28
JPH03169473A (ja) 1991-07-23

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