EP0429323B2 - Poche pour l'élaboration d'un métal munie d'un revêtement réfractaire de fond et procédé de réalisation d'un tel revêtement réfractaire de fond - Google Patents
Poche pour l'élaboration d'un métal munie d'un revêtement réfractaire de fond et procédé de réalisation d'un tel revêtement réfractaire de fond Download PDFInfo
- 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
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Images
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)
- Cookers (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
- les éléments indépendants de fond de poche comportent des faces latérales munies d'au moins une gorge s'étendant sensiblement parallèlement à la surface du fond de poche,
- les éléments indépendants de fond de poche sont scellés avec un béton à variation permanente de dimension positive rémanente,
- l'ensemble des éléments indépendants de fond de poche forment une mosaïque dont les joints sont les uns concentriques au trou de coulée et les autres rayonnants par rapport audit trou, les joints rayonnants étant décalés d'un joint concentrique à un autre.
- la couche de sécurité est entourée d'une ceinture annulaire susceptible de constituer une surface de démarrage du maçonnage du revêtement réfractaire de la paroi de l'enveloppe métallique,
- la ceinture annulaire de section sensiblement quadrilatère comporte au moins un épaulement extérieur définissant au moins une surface d'appui hélicoïdale, la largeur de ladite surface d'appui correspondant à l'épaisseur d'au moins une couche de revêtement réfractaire de paroi.
- on fabrique un moule formé par un fond convexe sphérique, et comportant des parois verticales constituant des compartiments correspondant à la géométrie des éléments du revêtement réfractaire de fond, lesdites parois ayant une section correspondante à celle des joints,
- on coule dans chaque compartiment ainsi formé un béton réfractaire choisi,
- et on démoule après la prise du béton en référençant chacun desdits éléments du revêtement réfractaire de fond qui comporte une face plane destinée à venir en appui sur le fond de poche.
- la Fig. 1 est une vue partielle en coupe d'un premier mode de réalisation d'une poche pour l'élaboration de métal selon l'invention,
- la Fig. 2 est une vue partelle en coupe d'un second mode de réalisation d'une poche selon l'invention,
- la Fig. 3 est une vue partielle en coupe d'un troisième mode de réalisation d'une poche selon l'invention,
- la Fig. 4 est une vue de dessus d'un ensemble formé par une rampe annulaire de démarrage de maçonnage des briques de paroi et par un revêtement de fond de poche selon l'invention,
- la Fig. 5 est une vue en coupe d'un moule dans lequel sont coulés les éléments indépendants de la mosaïque formant un revêtement réfractaire de fond de poche selon l'invention.
Claims (11)
- Poche pour l'élaboration de métal comportant une enveloppe métallique (1) munie, sur sa surface interne, d'un revêtement réfractaire de paroi (3, 10, 11) et d'un revêtement réfractaire de fond (4, 12, 13) portant un trou de coulée (5) excentré par rapport au centre de la surface dudit revêtement réfractaire de fond (4, 12, 13), caractérisée en ce que l'enveloppe métallique (1) comporte un fond plat et horizontal et la surface de revêtement réfractaire de fond (4, 12, 13) en contact avec le métal en élaboration, est formée par une surface concave présentant une forme générale sphérique et en tout point une pente dirigée vers le trou de coulée (5).
- Poche selon la revendication 1, caractérisée en ce que le revêtement réfractaire (4) de fond de poche est formé par au moins un assemblage d'éléments indépendants (4a) séparés par des joints (7).
- Poche selon la revendication 1, caractérisée en ce que le revêtement réfractaire de fond comprend au moins une couche de sécurité (12) et au moins une couche d'usure (13), ladite couche de sécurité (12) étant formée d'un assemblage d'éléments indépendants (20) séparés par des joints (21);
- Poche selon l'une des revendications précédentes, caractérisée en ce que, dans l'assemblage des éléments indépendants (4a, 20) constituant le revêtement réfractaire de fond (4, 12), lesdits éléments indépendants (4a, 20) sont réalisés et disposés de manière à créer un effet de voûte lorsque ladite poche est renversée.
- Poche selon l'une des revendications précédentes, caractérisée en ce que les éléments indépendants (4a, 20) sont obtenus par moulage.
- Poche selon l'une des revendications précédentes, caractérisée en ce que les éléments indépendants (4a, 20) comportent des faces latérales munies d'au moins une gorge (8, 22) s'étendant sensiblement parallèlement à la surface du fond de poche.
- Poche selon l'une des revendications précédentes, caractérisée en ce que les éléments indépendants (4a, 20) sont scellés avec un béton à variation permanente de dimension positive rémanente.
- Poche selon l'une des revendications précédente, caractérisée en ce que l'ensemble des éléments indépendants (4a, 20) forment une mosaïque dont les joints (7, 21) sont les uns concentriques au trou de coulée (5) et les autres rayonnants par rapport auxdits trous de coulée (5), les joints rayonnants étant décalés d'un joint concentrique à un autre.
- Poche selon la revendication 3, caractérisée en ce que la couche de sécurité (12) est entourée d'une ceinture annulaire (15) susceptible de former une surface (16, 17) de démarrage du maçonnage du revêtement réfractaire (10, 11) de la paroi de l'enveloppe métallique (1).
- Poche selon la revendication 9, caractérisée en ce que la ceinture annulaire (15) de section sensiblement quadrilatère comporte au moins un épaulement extérieur (14) définissant au moins une surface d'appui hélicoïdale (16, 17), ladite surface d'appui (16, 17) ayant une largeur correspondant à l'épaisseur d'au moins une couche de revêtement réfractaire (10, 11) de paroi.
- Procédé de réalisation d'un revêtement réfractaire de fond de poche selon l'une des revendications précédentes, caractérisé en ce que :on fabrique un moule (30) constitué par un fond convexe (32) sphérique, et comportant des parois verticales (33) constituant des compartiments correspondant à la géométrie des éléments du revêtement réfractaire (4, 12) de fond, ledites parois (33) ayant une section correspondante à celle des joints (7, 20),on coule dans chaque compartiment ainsi formé un béton réfractaire choisi (34),et on démoule après la prise du béton en référençant chacun desdits éléments (4a, 20) du revêtement réfractaire de fond qui comporte une face plane destinée à venir en appui sur le fond de poche.
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 (fr) | 1991-05-29 |
EP0429323B1 EP0429323B1 (fr) | 1994-01-05 |
EP0429323B2 true EP0429323B2 (fr) | 1999-07-14 |
Family
ID=9387513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90403059A Expired - Lifetime EP0429323B2 (fr) | 1989-11-17 | 1990-10-29 | Poche pour l'élaboration d'un métal munie d'un revêtement réfractaire de fond et procédé de réalisation d'un tel revêtement réfractaire de fond |
Country Status (12)
Country | Link |
---|---|
US (1) | US5948349A (fr) |
EP (1) | EP0429323B2 (fr) |
JP (1) | JPH0747204B2 (fr) |
AT (1) | ATE99580T1 (fr) |
AU (1) | AU624276B2 (fr) |
CA (1) | CA2030128C (fr) |
DE (1) | DE69005798T3 (fr) |
DK (1) | DK0429323T4 (fr) |
FI (1) | FI92982C (fr) |
FR (1) | FR2654661B1 (fr) |
TR (1) | TR27294A (fr) |
ZA (1) | ZA909214B (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US6528010B2 (en) | 2000-02-08 | 2003-03-04 | Foseco International Limited | Molten metal handling vessel |
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 |
CA2742473C (fr) | 2008-11-12 | 2015-02-24 | Ventana Medical Systems, Inc. | Procedes et appareils permettant de chauffer des lames portant des echantillons |
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 |
HUE032636T2 (en) * | 2013-01-07 | 2017-10-30 | Refractory Intellectual Property Gmbh & Co Kg | Refractory ceramic socket |
SI2796227T1 (sl) * | 2013-04-26 | 2016-11-30 | Refractory Intellectual Property Gmbh & Co. Kg | Dno livarskega lonca in livarski lonec |
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 |
AU2014363717B2 (en) | 2013-12-13 | 2016-12-22 | Ventana Medical Systems, Inc. | Automated histological processing of biological specimens and associated technology |
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 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (fr) * | 1974-08-28 | 1979-06-25 | ||
JPS5234822U (fr) * | 1975-09-03 | 1977-03-11 | ||
JPS53126920U (fr) * | 1977-03-18 | 1978-10-07 | ||
US4608672A (en) * | 1983-07-14 | 1986-08-26 | Honeywell Inc. | Semiconductor memory |
US4746102A (en) * | 1987-03-20 | 1988-05-24 | Bethlehem Steel Corporation | Drain hole design for ladle |
US4942986A (en) * | 1988-07-13 | 1990-07-24 | Lewis Thomas W | Pressurized tundish for controlling a continuous flow of molten metal |
-
1989
- 1989-11-17 FR FR898915128A patent/FR2654661B1/fr not_active Expired - Lifetime
-
1990
- 1990-10-29 AT AT90403059T patent/ATE99580T1/de not_active IP Right Cessation
- 1990-10-29 EP EP90403059A patent/EP0429323B2/fr not_active Expired - Lifetime
- 1990-10-29 DK DK90403059T patent/DK0429323T4/da active
- 1990-10-29 DE DE69005798T patent/DE69005798T3/de not_active Expired - Fee Related
- 1990-11-08 AU AU65884/90A patent/AU624276B2/en not_active Ceased
- 1990-11-15 FI FI905658A patent/FI92982C/fi active IP Right Grant
- 1990-11-16 ZA ZA909214A patent/ZA909214B/xx unknown
- 1990-11-16 JP JP2312588A patent/JPH0747204B2/ja not_active Expired - Fee Related
- 1990-11-16 CA CA002030128A patent/CA2030128C/fr not_active Expired - Lifetime
- 1990-12-04 TR TR01099/90A patent/TR27294A/xx unknown
-
1992
- 1992-10-20 US US07/963,524 patent/US5948349A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69005798T3 (de) | 2000-01-13 |
DK0429323T4 (da) | 1999-11-29 |
JPH0747204B2 (ja) | 1995-05-24 |
AU624276B2 (en) | 1992-06-04 |
CA2030128C (fr) | 1996-10-29 |
DE69005798T2 (de) | 1994-04-28 |
FI905658A (fi) | 1991-05-18 |
FI92982B (fi) | 1994-10-31 |
JPH03169473A (ja) | 1991-07-23 |
US5948349A (en) | 1999-09-07 |
DE69005798D1 (de) | 1994-02-17 |
ATE99580T1 (de) | 1994-01-15 |
FI905658A0 (fi) | 1990-11-15 |
TR27294A (tr) | 1994-12-28 |
FI92982C (fi) | 1995-02-10 |
CA2030128A1 (fr) | 1991-05-18 |
AU6588490A (en) | 1991-05-30 |
EP0429323B1 (fr) | 1994-01-05 |
DK0429323T3 (da) | 1994-05-16 |
FR2654661B1 (fr) | 1994-06-10 |
EP0429323A1 (fr) | 1991-05-29 |
ZA909214B (en) | 1992-06-24 |
FR2654661A1 (fr) | 1991-05-24 |
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