EP0482996A1 - Heated hoods for ladles in metallurgical installations - Google Patents
Heated hoods for ladles in metallurgical installations Download PDFInfo
- Publication number
- EP0482996A1 EP0482996A1 EP91402816A EP91402816A EP0482996A1 EP 0482996 A1 EP0482996 A1 EP 0482996A1 EP 91402816 A EP91402816 A EP 91402816A EP 91402816 A EP91402816 A EP 91402816A EP 0482996 A1 EP0482996 A1 EP 0482996A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boxes
- ladles
- lights
- heated
- hoods
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 title claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005273 aeration Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
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
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
Definitions
- the present invention relates to improvements made to the heating covers which are intended to ensure the preheating of pockets of metallurgical installations, in particular of ladles of steel or cast iron.
- heated pocket lids which include a metal frame produced so as to constitute mechanically resistant boxes on which refractory linings are hung.
- the presence of such boxes delimits confined enclosures which are subjected to a high temperature (of the order of 1500 ° C.).
- heating covers fitted with lights (see French patent n ° 26 14 565), they act as a heat exchanger between the combustion fumes and the ambient air for preheating; these lights can also (see US patent n ° 28 66 628) in the case of hearth furnace participate in the cooling of the external structure of the furnace. These lights do not, however, avoid the formation of confined atmospheres conducive to the destruction of the refractory lining attached to the boxes.
- the present invention proposes to make improvements to such heating covers allowing the total elimination of the drawbacks mentioned above.
- the subject of this invention is therefore a heating cover for pockets of metallurgical installations, in particular for ladles with a metal frame made so as to constitute mechanically resistant boxes to which refractory linings are hung, characterized in that provision is made for aeration of the closed enclosures which they delimit, obtained using lights provided in the walls of said boxes.
- heated pocket lids which have a metal frame, in particular made of steel constituting a number of boxes such as 10.
- refractory elements such as 12, for example using hooking elements here constituted by floating anchors 14.
- Ventilation slots are housed in the walls of the boxes.
- each of these lights has the shape of an elongated slot whose dimensions are for example of the order 130 x 20 mm.
- ventilation is provided for the metal boxes constituting the frame of the cover, which prevents any deterioration of the refractory linings of the heating cover.
- FIG. 3 of the accompanying drawings illustrates a detail of a variant of the cover according to this invention.
- the flat iron 20 which provides the connection between the metal frame of the cover and the belt 22 carrying the pins 24 used for handling said cover, for example by means of the spreader of a casting bridge, is inclined inward at an angle ⁇ relative to the vertical, which further improves the preservation of the destruction of the refractory by means of a "wedge effect".
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
La présente invention est relative à des perfectionnements apportés aux couvercles chauffants qui sont destinés à assurer le préchauffage de poches d'installations métallurgiques, notamment de poches de coulée en acier ou en fonte.The present invention relates to improvements made to the heating covers which are intended to ensure the preheating of pockets of metallurgical installations, in particular of ladles of steel or cast iron.
On sait qu'en métallurgie, on utilise des couvercles chauffants de poches qui comprennent une armature métallique réalisée de façon à constituer des caissons mécaniquement résistants sur lesquels sont accrochés des garnissages réfractaires. Or, la présence de tels caissons délimite des enceintes confinées qui sont soumises à une température élevée (de l'ordre de 1500° C).It is known that in metallurgy, heated pocket lids are used which include a metal frame produced so as to constitute mechanically resistant boxes on which refractory linings are hung. However, the presence of such boxes delimits confined enclosures which are subjected to a high temperature (of the order of 1500 ° C.).
Il existe aussi des couvercles chauffants munis de lumières (voir brevet français n° 26 14 565), elles jouent le rôle d'échangeur thermique entre les fumées de combustion et l'air ambiant de préchauffage ; ces lumières peuvent aussi (cf brevet US n° 28 66 628) dans le cas de four à sole participer au refroidissement de la structure externe du four. Ces lumières n'évitent pas cependant la formation d'atmosphères confinées propices à la destruction du garnissage réfractaire accroché aux caissons. La présente invention se propose d'apporter des perfectionnements à de tels couvercles chauffants permettant l'élimination totale des inconvénients mentionnés ci-dessus.There are also heating covers fitted with lights (see French patent n ° 26 14 565), they act as a heat exchanger between the combustion fumes and the ambient air for preheating; these lights can also (see US patent n ° 28 66 628) in the case of hearth furnace participate in the cooling of the external structure of the furnace. These lights do not, however, avoid the formation of confined atmospheres conducive to the destruction of the refractory lining attached to the boxes. The present invention proposes to make improvements to such heating covers allowing the total elimination of the drawbacks mentioned above.
Cette invention a donc pour objet un couvercle chauffant pour poches d'installations métallurgiques, notamment pour poches de coulée comportant une armature métallique réalisée de manière à constituer des caissons mécaniquement résistants auxquels sont accrochés des garnissages réfractaires, caractérisé en ce l'on prévoit une aération des enceintes fermées qu'ils délimitent, obtenue à l'aide de lumières prévues dans les parois desdits caissons.The subject of this invention is therefore a heating cover for pockets of metallurgical installations, in particular for ladles with a metal frame made so as to constitute mechanically resistant boxes to which refractory linings are hung, characterized in that provision is made for aeration of the closed enclosures which they delimit, obtained using lights provided in the walls of said boxes.
D'autres caractéristiques et avantages ressortiront de la description faite ci-après en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Sur les dessins :
- la figure 1 est une vue en plan d'un couvercle chauffant de poche perfectionné selon cette invention ;
- la figure 2 est une vue en coupe selon 2-2 de la figure 1 et;
- la figure 3 est une vue partielle représentant un détail d'une variante d'un couvercle chauffant selon l'invention.
- Figure 1 is a plan view of an improved pocket heating cover according to this invention;
- Figure 2 is a sectional view along 2-2 of Figure 1 and;
- Figure 3 is a partial view showing a detail of a variant of a heating cover according to the invention.
En se référant aux dessins, on voit que l'invention s'applique à des couvercles chauffants de poches qui comportent une armature métallique, notamment en acier constituant un certain nombre de caissons tels que 10. Sur cette armature sont accrochés des éléments réfractaires tels que 12, par exemple à l'aide d'éléments d'accrochage constitués ici par des ancrages flottants 14.Referring to the drawings, it can be seen that the invention applies to heated pocket lids which have a metal frame, in particular made of steel constituting a number of boxes such as 10. On this frame are refractory elements such as 12, for example using hooking elements here constituted by
Afin d'éviter la formation d'une atmosphère confinée dans les enceintes telles que 16, délimitées par les caissons 10 et qui sont susceptibles, lors du chauffage à haute température (de l'ordre de 1500° C), d'entraîner une destruction des réfractaires 12, on ménage dans les parois des caissons, des lumières d'aération telles que 18.In order to avoid the formation of a confined atmosphere in the enclosures such as 16, delimited by the
Selon un mode de réalisation préféré de cette invention, chacune de ces lumières présente la forme d'une fente allongée dont les dimensions sont par exemple de l'ordre de 130 x 20 mm. L'expérience démontre que grâce à la présence de ces lumières 18, on assure une aération des caissons métalliques constituant l'armature du couvercle ce qui évite toute détérioration des garnissages réfractaires du couvercle chauffant.According to a preferred embodiment of this invention, each of these lights has the shape of an elongated slot whose dimensions are for example of the order 130 x 20 mm. Experience has shown that, thanks to the presence of these
La figure 3 des dessins annexés illustre un détail d'une variante du couvercle selon cette invention. Sur cette figure, on voit que le fer plat 20 qui assure la liaison entre l'armature métallique du couvercle et la ceinture 22 portant les tourillons 24 servant aux manipulations dudit couvercle par exemple par l'intermédiaire du palonnier d'un pont de coulée, est incliné vers l'intérieur selon un angle α par rapport à la verticale, ce qui permet d'améliorer encore la préservation de la destruction du réfractaire grâce à un "effet de coin".Figure 3 of the accompanying drawings illustrates a detail of a variant of the cover according to this invention. In this figure, it can be seen that the
Il demeure bien entendu que cette invention n'est pas limitée aux exemples de réalisation décrits et représentés ici mais qu'elle en englobe toutes les variantes.It remains to be understood that this invention is not limited to the exemplary embodiments described and shown here but that it encompasses all variants thereof.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9013306A FR2668404B1 (en) | 1990-10-26 | 1990-10-26 | IMPROVEMENTS ON HEATING COVERS FOR POCKETS OF METALLURGICAL INSTALLATIONS. |
| FR9013306 | 1990-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0482996A1 true EP0482996A1 (en) | 1992-04-29 |
| EP0482996B1 EP0482996B1 (en) | 1994-10-19 |
Family
ID=9401602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19910402816 Expired - Lifetime EP0482996B1 (en) | 1990-10-26 | 1991-10-22 | Heated hoods for ladles in metallurgical installations |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0482996B1 (en) |
| DE (1) | DE69104686T2 (en) |
| FR (1) | FR2668404B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2866628A (en) * | 1957-01-07 | 1958-12-30 | Loftus Engineering Corp | Open hearth furnace |
| DE1955713A1 (en) * | 1968-12-03 | 1970-06-11 | Gen Refractories Co | Casing for electric arc furnaces |
| FR2614565A1 (en) * | 1987-04-29 | 1988-11-04 | Gaz De France | Device for heating a vessel such as, for example, a steelworks ladle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193271A (en) * | 1981-05-23 | 1982-11-27 | Kawasaki Steel Corp | Tundish for continuous casting |
-
1990
- 1990-10-26 FR FR9013306A patent/FR2668404B1/en not_active Expired - Fee Related
-
1991
- 1991-10-22 DE DE1991604686 patent/DE69104686T2/en not_active Expired - Fee Related
- 1991-10-22 EP EP19910402816 patent/EP0482996B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2866628A (en) * | 1957-01-07 | 1958-12-30 | Loftus Engineering Corp | Open hearth furnace |
| DE1955713A1 (en) * | 1968-12-03 | 1970-06-11 | Gen Refractories Co | Casing for electric arc furnaces |
| FR2614565A1 (en) * | 1987-04-29 | 1988-11-04 | Gaz De France | Device for heating a vessel such as, for example, a steelworks ladle |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 7, no. 44 (M-195)(1189) 22 Février 1983 & JP-A-57 193 271 ( KAWASAKI ) 27 Novembre 1982 * |
| soviet inventiuons illustrated section pq,class p53,week d 44, 9 decembre 1981,pagge 1 no.81095D /44 Derwent publications,londres gb, su-a-801982 (LENGD LENGIPROMEZ) 15-02-81 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2668404A1 (en) | 1992-04-30 |
| FR2668404B1 (en) | 1994-11-25 |
| DE69104686T2 (en) | 1995-03-02 |
| DE69104686D1 (en) | 1994-11-24 |
| EP0482996B1 (en) | 1994-10-19 |
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