EP0454653A1 - Refractory block for the foot of the wall of a metalurgical vessel - Google Patents

Refractory block for the foot of the wall of a metalurgical vessel Download PDF

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Publication number
EP0454653A1
EP0454653A1 EP91870069A EP91870069A EP0454653A1 EP 0454653 A1 EP0454653 A1 EP 0454653A1 EP 91870069 A EP91870069 A EP 91870069A EP 91870069 A EP91870069 A EP 91870069A EP 0454653 A1 EP0454653 A1 EP 0454653A1
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EP
European Patent Office
Prior art keywords
refractory
base
lining
wall
block
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Withdrawn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
EP91870069A
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German (de)
French (fr)
Inventor
René Desaar
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.)
RECHERCHES ET DEVELOPPEMENTS DESAAR
Original Assignee
RECHERCHES ET DEVELOPPEMENTS DESAAR
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 RECHERCHES ET DEVELOPPEMENTS DESAAR filed Critical RECHERCHES ET DEVELOPPEMENTS DESAAR
Publication of EP0454653A1 publication Critical patent/EP0454653A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B22D41/003—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with impact pads

Definitions

  • the present invention relates to metallurgical vessels such as ladles for molten metal and it relates more particularly to the refractory lining which lining the interior side wall of the vessel.
  • the interior refractory lining consists of bricks of refractory material built on the side wall and on the bottom of the container.
  • a slab called impact slab, intended to undergo the impact of the jet of molten metal when it is poured into the container and, for this reason, the impact slab is made of a refractory material offering good resistance to erosion under the effect of a jet of molten metal.
  • the object of the present invention is to reduce the wear of the base of the lateral refractory wall of a metallurgical vessel and thus to increase the lifetime of this refractory wall.
  • the invention achieves this object by proposing a refractory block forming the base of the refractory wall, intended to be placed in the interior refractory lining of a metallurgical container, which block is remarkable in that it consists of a molded part forming a pan vertical with curved back and a base, the vertical section being intended to be built into the refractory lining of the side wall of a metallurgical container and the free end of the base being intended to be built into the refractory lining of the bottom of the container.
  • the vertical face has a curved front face and the base is a segment included under the curve of the front face.
  • An alternative embodiment consists in that the base is extended by a threshold.
  • the upper face of the base and of the possible threshold is curved.
  • Figure 1 shows a top view in section of an exemplary ladle incorporating a refractory block from the wall base according to the invention.
  • FIG. 2 is a front elevation view of the exemplary embodiment of the refractory block as shown in FIG. 1.
  • FIG. 3 is a side elevation view of the wall base block shown in FIG. 1.
  • Figure 4 is a sectional view along line IV-IV of Figure 1.
  • Figure 5 is a front elevational view of a second exemplary embodiment according to the invention.
  • FIG. 6 is a plan view of the wall base block of FIG. 5.
  • FIG. 7 is a side elevation view of the wall base block of FIG. 5.
  • Figure 8 is a sectional view along line VIII-VIII of Figure 6.
  • Figure 9 is a front elevational view of a third exemplary embodiment according to the invention.
  • FIG. 10 is a plan view of the wall base block of FIG. 9.
  • Figure 11 is a side elevational view of the block of foot of wall of figure 9.
  • Figure 12 is a sectional view along line XII-XII of Figure 10.
  • Figure 1 shows an exemplary steel plant ladle 1, top view with horizontal section in the side wall.
  • the bottom of the pocket is lined with a refractory lining made of refractory bricks 6.
  • a seat brick 7 forming the taphole for emptying the pocket.
  • orifices 8 used for the introduction of an injection lance for bubbling or desulphurization of the liquid metal bath, as is well known to those skilled in the art.
  • the metal side wall 2 of the pocket is internally lined with a refractory lining usually comprising a safety lining 3 and a wear lining 4 consisting of masonry refractory bricks.
  • An embankment 5 makes the joint between the interior refractory lining of the side wall and the refractory lining of the pocket bottom.
  • the interior refractory lining of the side wall of the pocket in this case the wear lining 4, comprises a wall base block 10 molded from a piece of high-strength refractory concrete, which piece forms a vertical panel 11 projecting from a base 13.
  • the vertical panel 11 has a curved back 12 and it is intended to be built into the refractory wear lining 4 of the side wall of the metallurgical container.
  • the base 12 is intended to be built into the refractory lining 6 lining the bottom of the container.
  • FIGS. 2, 3 and 4 show enlarged views of the wall base block 10.
  • the Figure 2 shows a front view of the block
  • Figure 3 shows a side view of the block
  • Figure 4 shows a sectional view along a median plane IV-IV.
  • the base 13 can be extended by a projecting threshold 13A (FIGS. 5 to 8) which is integrated into the refractory lining 6 lining the bottom of the container and is in particular built with an impact slab.
  • a projecting threshold 13A FIGS. 5 to 8
  • the refractory block according to the invention is more resistant to erosion than traditional refractory bricks, the jet of molten metal can reach the vertical face 11 of block 10 without risking damaging the refractory material. The replacement of this block is therefore necessary only when the total refractory lining is torn off.
  • the upper face 15 of the base 13 and of the threshold 13A is curved as shown in FIGS. 9 to 12.
  • This conformation of the base promotes the surface spreading of the liquid metal and tends to dampen the jet of metal liquid.
  • a curved base is advantageously built with an impact slab also curved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The block consists of a moulded piece (10) forming a vertical panel (11) with a curved back (12) and a base (13), the vertical panel (11) being intended for masoning in the refractory lining (4) of the lateral wall of a metallurgical vessel and the free end of the base (13) being intended for masoning in the refractory lining of the bottom of the vessel. <IMAGE>

Description

La présente invention se rapporte aux récipients métallurgiques tels que poches de coulée pour métal en fusion et elle concerne plus particulièrement le revêtement réfractaire qui garnit intérieurement la paroi latérale du récipient.The present invention relates to metallurgical vessels such as ladles for molten metal and it relates more particularly to the refractory lining which lining the interior side wall of the vessel.

Le revêtement réfractaire intérieur est constitué de briques en matériau réfractaire maçonnées sur la paroi latérale et sur le fond du récipient. Dans le revêtement réfractaire du fond de récipient peut également être maçonnée une dalle, dite dalle d'impact, destinée à subir l'impact du jet de métal en fusion lorsque celui-ci se trouve déversé dans le récipient et, pour cette raison, la dalle d'impact est constituée d'un matériau réfractaire offrant une bonne résistance à l'érosion sous l'effet d'un jet de métal en fusion.The interior refractory lining consists of bricks of refractory material built on the side wall and on the bottom of the container. In the refractory lining of the container bottom can also be built a slab, called impact slab, intended to undergo the impact of the jet of molten metal when it is poured into the container and, for this reason, the impact slab is made of a refractory material offering good resistance to erosion under the effect of a jet of molten metal.

Cependant, lorsque du métal en fusion se trouve déversé dans un récipient métallurgique, le métal rebondit sur la dalle d'impact d'abord, puis sur la surface de métal liquide en provoquant un mouvement tourbillonnaire. Le métal en fusion atteint alors le revêtement réfractaire de la paroi latérale et attaque et érode en particulier les briques réfractaires du pied de la paroi latérale. L'usure relativement rapide des briques réfractaires du pied de paroi entraîne la nécessité de procéder à l'arrêt prématuré de la poche et à la réfection du revêtement réfractaire du fond et de la partie érodée du pied de paroi, ce qui implique l'arrachement des briques réfractaires usées et le remaçonnage de nouvelles briques. Ces opérations de réfection sont pénibles et coûteuses tant en matériau réfractaire qu'en main d'oeuvre et elles entraînent une perte de rendement du récipient.However, when molten metal is spilled into a metallurgical vessel, the metal rebounds on the impact plate first, then on the liquid metal surface causing a vortex movement. The molten metal then reaches the refractory lining of the side wall and attacks and erodes in particular the refractory bricks of the foot of the side wall. The relatively rapid wear of the refractory bricks of the wall foot leads to the need to prematurely stop the pocket and repair the refractory lining of the bottom and the eroded part of the wall foot, which involves tearing worn refractory bricks and the reshaping of new bricks. These repair operations are painful and costly, both in refractory material and in labor, and they result in a loss of efficiency of the container.

Le but de la présente invention est de réduire l'usure du pied de la paroi réfractaire latérale d'un récipient métallurgique et d'augmenter ainsi la durée de vie de cette paroi réfractaire.The object of the present invention is to reduce the wear of the base of the lateral refractory wall of a metallurgical vessel and thus to increase the lifetime of this refractory wall.

L'invention atteint ce but en proposant un bloc réfractaire formant le pied de paroi réfractaire, destiné à être placé dans le revêtement réfractaire intérieur d'un récipient métallurgique, lequel bloc est remarquable en ce qu'il consiste en une pièce moulée formant un pan vertical à dos courbe et un socle, le pan vertical étant destiné à être maçonné dans le revêtement réfractaire de la paroi latérale d'un récipient métallurgique et l'extrémité libre du socle étant destinée à être maçonnée dans le revêtement réfractaire du fond du récipient.The invention achieves this object by proposing a refractory block forming the base of the refractory wall, intended to be placed in the interior refractory lining of a metallurgical container, which block is remarkable in that it consists of a molded part forming a pan vertical with curved back and a base, the vertical section being intended to be built into the refractory lining of the side wall of a metallurgical container and the free end of the base being intended to be built into the refractory lining of the bottom of the container.

Dans un mode d'exécution exemplaire le pan vertical a une face frontale courbe et le socle est un segment compris sous la courbe de la face frontale.In an exemplary embodiment, the vertical face has a curved front face and the base is a segment included under the curve of the front face.

Une variante d'exécution consiste en ce que le socle se prolonge par un seuil. Dans un autre mode d'exécution exemplaire, la face supérieure du socle et du seuil éventuel est bombée.An alternative embodiment consists in that the base is extended by a threshold. In another exemplary embodiment, the upper face of the base and of the possible threshold is curved.

Trois modes d'exécution exemplaires du bloc de pied de paroi réfractaire selon l'invention sont décrits dans ce qui suit à l'aide des dessins joints.Three exemplary embodiments of the refractory wall base block according to the invention are described in the following with the aid of the accompanying drawings.

La figure 1 montre une vue de dessus et en coupe d'une poche de coulée exemplaire incorporant un bloc réfractaire de pied de paroi conforme à l'invention.Figure 1 shows a top view in section of an exemplary ladle incorporating a refractory block from the wall base according to the invention.

La figure 2 est une vue en élévation frontale du mode d'exécution exemplaire du bloc réfractaire tel que montré dans la figure 1.FIG. 2 is a front elevation view of the exemplary embodiment of the refractory block as shown in FIG. 1.

La figure 3 est une vue en élévation latérale du bloc de pied de paroi montré dans la figure 1.FIG. 3 is a side elevation view of the wall base block shown in FIG. 1.

La figure 4 est une vue en coupe suivant la ligne IV-IV de la figure 1.Figure 4 is a sectional view along line IV-IV of Figure 1.

La figure 5 est une vue en élévation frontale d'un deuxième mode d'exécution exemplaire conforme à l'invention.Figure 5 is a front elevational view of a second exemplary embodiment according to the invention.

La figure 6 est une vue en plan du bloc de pied de paroi de la figure 5.FIG. 6 is a plan view of the wall base block of FIG. 5.

La figure 7 est une vue en élévation latérale du bloc de pied de paroi de la figure 5.FIG. 7 is a side elevation view of the wall base block of FIG. 5.

La figure 8 est une vue en coupe suivant la ligne VIII-VIII de la figure 6.Figure 8 is a sectional view along line VIII-VIII of Figure 6.

La figure 9 est une vue en élévation frontale d'un troisième mode d'exécution exemplaire conforme à l'invention.Figure 9 is a front elevational view of a third exemplary embodiment according to the invention.

La figure 10 est une vue en plan du bloc de pied de paroi de la figure 9.FIG. 10 is a plan view of the wall base block of FIG. 9.

La figure 11 est une vue en élévation latérale du bloc de pied de paroi de la figure 9.Figure 11 is a side elevational view of the block of foot of wall of figure 9.

La figure 12 est une vue en coupe suivant la ligne XII-XII de la figure 10.Figure 12 is a sectional view along line XII-XII of Figure 10.

La figure 1 représente une poche de coulée d'aciérie exemplaire 1, vue de dessus avec coupe horizontale dans la paroi latérale. Le fond de la poche est garni d'un revêtement réfractaire constitué de briques réfractaires 6. Dans ce revêtement réfractaire est maçonnée une brique de siège 7 formant le trou de coulée pour la vidange de la poche. Dans le fond de la poche sont également prévus des orifices 8 servant à l'introduction d'une lance d'injection pour le bullage ou la désulfuration du bain de métal liquide, ainsi qu'il est bien connu de l'homme du métier. La paroi latérale métallique 2 de la poche est garnie intérieurement d'un revêtement réfractaire comprenant usuellement un revêtement de sécurité 3 et un revêtement d'usure 4 constitué de briques réfractaires maçonnées. Un talus 5 fait la jointure entre le revêtement réfractaire intérieur de la paroi latérale et le revêtement réfractaire du fond de poche.Figure 1 shows an exemplary steel plant ladle 1, top view with horizontal section in the side wall. The bottom of the pocket is lined with a refractory lining made of refractory bricks 6. In this refractory lining is built a seat brick 7 forming the taphole for emptying the pocket. In the bottom of the pocket are also provided orifices 8 used for the introduction of an injection lance for bubbling or desulphurization of the liquid metal bath, as is well known to those skilled in the art. The metal side wall 2 of the pocket is internally lined with a refractory lining usually comprising a safety lining 3 and a wear lining 4 consisting of masonry refractory bricks. An embankment 5 makes the joint between the interior refractory lining of the side wall and the refractory lining of the pocket bottom.

Conformément à l'invention, le revêtement réfractaire intérieur de la paroi latérale de la poche, en l'occurrence le revêtement d'usure 4, comprend un bloc de pied de paroi 10 moulé d'une pièce en béton réfractaire à haute résistance, laquelle pièce forme un pan vertical 11 faisant saillie sur un socle 13. Le pan vertical 11 a un dos 12 courbe et il est destiné à être maçonné dans le revêtement réfractaire d'usure 4 de la paroi latérale du récipient métallurgique. Le socle 12 est destiné à être maçonné dans le revêtement réfractaire 6 garnissant le fond du récipient.According to the invention, the interior refractory lining of the side wall of the pocket, in this case the wear lining 4, comprises a wall base block 10 molded from a piece of high-strength refractory concrete, which piece forms a vertical panel 11 projecting from a base 13. The vertical panel 11 has a curved back 12 and it is intended to be built into the refractory wear lining 4 of the side wall of the metallurgical container. The base 12 is intended to be built into the refractory lining 6 lining the bottom of the container.

Dans l'exemple représenté à la figure 1, le socle 13 forme un segment compris sous la courbe de la face frontale 14 du pan vertical 11. Les figures 2, 3 et 4 montrent des vues agrandies du bloc de pied de paroi 10. La figure 2 montre une vue frontale du bloc, la figure 3 montre une vue latérale du bloc et la figure 4 montre une vue en coupe suivant un plan médian IV-IV.In the example shown in FIG. 1, the base 13 forms a segment included under the curve of the front face 14 of the vertical face 11. FIGS. 2, 3 and 4 show enlarged views of the wall base block 10. The Figure 2 shows a front view of the block, Figure 3 shows a side view of the block and Figure 4 shows a sectional view along a median plane IV-IV.

Le socle 13 peut se prolonger par un seuil saillant 13A (figures 5 à 8) qui s'intègre dans le revêtement réfractaire 6 tapissant le fond du récipient et se trouve en particulier maçonné avec une dalle d'impact.The base 13 can be extended by a projecting threshold 13A (FIGS. 5 to 8) which is integrated into the refractory lining 6 lining the bottom of the container and is in particular built with an impact slab.

Le bloc réfractaire selon l'invention étant plus résistant à l'érosion que les briques réfractaires traditionnelles, le jet de métal en fusion peut atteindre le pan vertical 11 du bloc 10 sans risquer d'entamer la matière réfractaire. Le remplacement de ce bloc ne s'impose dès lors plus que lorsque l'on arrache le revêtement réfractaire total.Since the refractory block according to the invention is more resistant to erosion than traditional refractory bricks, the jet of molten metal can reach the vertical face 11 of block 10 without risking damaging the refractory material. The replacement of this block is therefore necessary only when the total refractory lining is torn off.

Dans une variante d'exécution, la face supérieure 15 du socle 13 et du seuil 13A éventuel est bombée comme le montrent les figures 9 à 12. Cette conformation du socle favorise l'étalement superficiel du métal liquide et tend à amortir le jet de métal liquide. Un socle bombé est avantageusement maçonné avec une dalle d'impact également bombée.In an alternative embodiment, the upper face 15 of the base 13 and of the threshold 13A, if any, is curved as shown in FIGS. 9 to 12. This conformation of the base promotes the surface spreading of the liquid metal and tends to dampen the jet of metal liquid. A curved base is advantageously built with an impact slab also curved.

Les exemples décrits dans ce qui précède sont des exemples donnés à titre illustratif et l'invention n'est nullement limitée à ces exemples. Toute modification, toute variante et tout agencement équivalent doivent être considérés comme compris dans le cadre de l'invention.The examples described in the foregoing are examples given by way of illustration and the invention is in no way limited to these examples. Any modification, any variant and any equivalent arrangement must be considered to be within the scope of the invention.

Claims (5)

Bloc de pied de paroi réfractaire destiné à être placé dans le revêtement réfractaire intérieur d'un récipient métallurgique, caractérisé en ce qu'il consiste en une pièce moulée (10) formant un pan vertical (11) à dos (12) courbe et un socle (13), le pan vertical (11) étant destiné à être maçonné dans le revêtement réfractaire (4) de la paroi latérale d'un récipient métallurgique et l'extrémité libre du socle (13) étant destinée à être maçonnée dans le revêtement réfractaire (6) du fond du récipient.Refractory wall base block intended to be placed in the interior refractory lining of a metallurgical container, characterized in that it consists of a molded part (10) forming a vertical section (11) with a curved back (12) and a base (13), the vertical panel (11) being intended to be built into the refractory lining (4) of the side wall of a metallurgical vessel and the free end of the base (13) being intended to be built into the lining refractory (6) from the bottom of the container. Bloc selon la revendication 1, caractérisé en ce que le pan vertical (11) a une face frontale (14) courbe, et en ce que le socle (13) est un segment compris sous la courbe de la face frontale (14).Block according to claim 1, characterized in that the vertical face (11) has a curved front face (14), and in that the base (13) is a segment included under the curve of the front face (14). Bloc selon la revendication 1 ou 2, caractérisé en ce que le socle (13) se prolonge par un seuil (13A).Block according to claim 1 or 2, characterized in that the base (13) is extended by a threshold (13A). Bloc selon la revendication 2 ou 3, caractérisé en ce que la face supérieure (15) du socle (13) est bombée.Block according to claim 2 or 3, characterized in that the upper face (15) of the base (13) is curved. Récipient métallurgique pour métal en fusion, comprenant un revêtement réfractaire (3, 4) tapissant intérieurement la paroi latérale (2) et un revêtement réfractaire (6) tapissant le fond du récipient, caractérisé en ce que le revêtement réfractaire intérieur (4) comprend un bloc réfractaire de pied de paroi (10) selon l'une quelconque des revendications précédentes.Metallurgical container for molten metal, comprising a refractory lining (3, 4) lining the side wall (2) internally and a refractory lining (6) lining the bottom of the container, characterized in that the internal refractory lining (4) comprises Wall base refractory block (10) according to any one of the preceding claims.
EP91870069A 1990-04-26 1991-04-24 Refractory block for the foot of the wall of a metalurgical vessel Withdrawn EP0454653A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9000456 1990-04-26
BE9000456A BE1004119A3 (en) 1990-04-26 1990-04-26 Foot of refractory block wall for metallurgical vessel.

Publications (1)

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EP0454653A1 true EP0454653A1 (en) 1991-10-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5704184A (en) * 1995-02-13 1998-01-06 Indresco Inc. Impact pad for ladles
CN113333727A (en) * 2021-07-02 2021-09-03 王磊 Improved structure's package wall brick masonry structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635459A (en) * 1968-02-29 1972-01-18 Arrigo Mare Refractory brick having oblique surface
DE2119051A1 (en) * 1971-04-20 1972-10-26 Brohltal AG für Stein- und Tonindustrie, 5401 Urmitz Wedge shaped refractory bricks - with staggered or mirror image shoulders for securely interlocking linings to large dia appts
US3972516A (en) * 1975-06-23 1976-08-03 Dresser Industries, Inc. Shapes for use in lining metallurgical vessels
EP0066566A1 (en) * 1981-05-26 1982-12-08 Stéphan PASEK &amp; Cie, Société Anonyme Brick, especially refractory brick for lining metallurgical vessels
EP0184634A1 (en) * 1984-11-28 1986-06-18 Lichtenberg Feuerfest Gmbh Ladle for receiving and optionally after-treating and/or transporting hot liquid metals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635459A (en) * 1968-02-29 1972-01-18 Arrigo Mare Refractory brick having oblique surface
DE2119051A1 (en) * 1971-04-20 1972-10-26 Brohltal AG für Stein- und Tonindustrie, 5401 Urmitz Wedge shaped refractory bricks - with staggered or mirror image shoulders for securely interlocking linings to large dia appts
US3972516A (en) * 1975-06-23 1976-08-03 Dresser Industries, Inc. Shapes for use in lining metallurgical vessels
EP0066566A1 (en) * 1981-05-26 1982-12-08 Stéphan PASEK &amp; Cie, Société Anonyme Brick, especially refractory brick for lining metallurgical vessels
EP0184634A1 (en) * 1984-11-28 1986-06-18 Lichtenberg Feuerfest Gmbh Ladle for receiving and optionally after-treating and/or transporting hot liquid metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5704184A (en) * 1995-02-13 1998-01-06 Indresco Inc. Impact pad for ladles
CN113333727A (en) * 2021-07-02 2021-09-03 王磊 Improved structure's package wall brick masonry structure

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