EP0149575A2 - Improved shells for hot blast stoves or identical apparatus - Google Patents

Improved shells for hot blast stoves or identical apparatus Download PDF

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Publication number
EP0149575A2
EP0149575A2 EP85400055A EP85400055A EP0149575A2 EP 0149575 A2 EP0149575 A2 EP 0149575A2 EP 85400055 A EP85400055 A EP 85400055A EP 85400055 A EP85400055 A EP 85400055A EP 0149575 A2 EP0149575 A2 EP 0149575A2
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EP
European Patent Office
Prior art keywords
wall
envelope
filling material
metal
shot
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Granted
Application number
EP85400055A
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German (de)
French (fr)
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EP0149575A3 (en
EP0149575B1 (en
Inventor
Pierre Rollot
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USINOR SA
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USINOR SA
Union Siderurgique du Nord et de lEst de France SA USINOR
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Application filed by USINOR SA, Union Siderurgique du Nord et de lEst de France SA USINOR filed Critical USINOR SA
Priority to AT85400055T priority Critical patent/ATE30599T1/en
Publication of EP0149575A2 publication Critical patent/EP0149575A2/en
Publication of EP0149575A3 publication Critical patent/EP0149575A3/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/02—Brick hot-blast stoves
    • C21B9/06—Linings

Definitions

  • the present invention relates, in particular, to blast furnace cowpers, that is to say reversing devices in which the air sent to the blast furnace nozzles is heated.
  • Such an apparatus comprises a side wall consisting of welded sheet plates, surmounted by a dome also made of welded sheet.
  • the enclosure formed by the side wall and the dome houses a combustion chamber and a ruching chamber.
  • the purpose of the present invention is to provide a lining of the double jacket more specially adapted to the thermal stresses to be transmitted, while being easy to implement.
  • the subject of the invention is an envelope for a cowper or similar device comprising a first wall made of welded sheet metal and comprising a second wall made of welded sheet metal, external and parallel to the first, these two walls delimiting a space filled with a filling material, characterized in that the filling material is based on shot of a metal or a light alloy, embedded in a binder based on thermosetting resin.
  • the invention also relates to a method for manufacturing such an envelope, in which an inner sheet metal wall is doubled by a second outer sheet wall, parallel to the first, this second wall delimiting with the first wall a space , characterized in that this space is filled with a filling material comprising shot of a metal or a light alloy and a binder based on thermosetting resin.
  • a part of a cowper envelope or similar device comprising a metal inner wall 1 made of welded sheet whose thickness can be comprised, for example between 15 and 30 mm.
  • a refractory lining 2 On the face of this wall facing the interior of the device is a refractory lining 2.
  • the outer wall is preferably made in the same grade of steel as the inner wall and has a roughly comparable thickness.
  • the interior wall includes, for example, a lower part 1a having a thickness of 24 mm. and an upper part 1 b having a thickness of 17mm.
  • the thickness of the outer wall 4 a , 4 b can vary accordingly, as shown in the drawing.
  • the thickness of the interval 5 a , 5 b delimited between the two walls can vary between for example 3 and 30 mm, a thickness of the order of 10 mm being however preferred.
  • the filling material of the gap between the walls is, according to the invention, constituted by aluminum shot or an aluminum alloy whose particles preferably have the dimensions between 0.2 and 2mm , for example, a dimension of the order of 0.5 or 1.5 mm being particularly favorable.
  • the average size of the metal granules is chosen so as to obtain an optimal filling of the alveo les and is, in any event, less than the minimum width of the gap between the two walls.
  • composition of this metallic shot aluminum or preferably an aluminum-based alloy or another metal or light alloy with high thermal conductivity will be used.
  • the interstices between the metal granules are filled with a binder based on resin or a mixture of thermosetting resin resistant to a temperature equal to or higher than 110 ° C.
  • This resin can be for example a powdered phenolic polyurethane resin or in the form of a liquid gel, containing the adjuvants necessary for its hardening and optionally a filler as is conventional in the techniques of molding or casting of such resins.
  • the filling of the cells can be carried out as follows: first of all, in a mixer, the metal particles are coated, using the resin in powder or in the form of liquid gel.
  • the mixture thus prepared is put into place, by injection or by pouring, optionally under neutral gas such as nitrogen, through orifices 7 into which tubes such as 8 are introduced, for example by screwing. vent holes are provided, if necessary in this same wall 4.
  • This installation of the mixture can be carried out cold.
  • a vibration operation is carried out so as to obtain an excellent filling of the cells. This can be done using a high frequency unidirectional vibrator.
  • the curing of the resin takes place between 20 minutes and one hour approximately after the introduction of the mixture, this duration naturally depending on the proportions of hardener contained in the mixture.
  • This hardening can possibly be accelerated by a slight increase in temperature.
  • the orifices such as 7 are then closed, for example by means of screwed or welded plugs, so as to restore the continuity of the outer wall 4.
  • the spacers 3 can be omitted, the method however being implemented under the same conditions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Powder Metallurgy (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The disclosure relates to an envelope to a cowper or a similar apparatus, comprising a wall (1) made with welded metal sheet, characterized in that it comprises a second wall (4) of welded metal sheet, which is arranged outside and parallel to the first wall, those two walls delimiting therebetween a space (5) filled with a filler material (6) consisting of light alloy shot, for example aluminium or aluminium alloy shot, embedded in a thermosetting resin binder. The operation life of said apparatuses is thus considerably improved and the lining and reinforcing process is relatively easy to implement.

Description

La présente invention concerne, notamment, les cowpers de hauts-fourneaux, c'est-à-dire les appareils à inversion dans lesquels s'effectue le réchauffage de l'air envoyé aux tuyères des hauts-fourneaux.The present invention relates, in particular, to blast furnace cowpers, that is to say reversing devices in which the air sent to the blast furnace nozzles is heated.

Un tel appareil comprend une paroi latérale constituée de plaques de tôle soudée, surmontée d'une coupole également en tôle soudée. L'enceinte formée par la paroi latérale et la coupole abrite une chambre de combustion et une chambre de ruchage.Such an apparatus comprises a side wall consisting of welded sheet plates, surmounted by a dome also made of welded sheet. The enclosure formed by the side wall and the dome houses a combustion chamber and a ruching chamber.

Les conditions qui règnent dans les cowpers et en particulier les conditions de température (cette dernière pouvant dépasser 1300° dans certaines zones) provoquent fréquemment des incidents au niveau de leurs parois métalliques. On constate en effet après quelques années de fonctionnement l'apparition de fissures, en particulier au niveau du dôme et du puits de combustion. Ces fissures se développent à partir de la face interne de la paroi métallique, principalement à proximité des soudures, parallèlement ou transversalement à ces dernières. Elles sont dues à l'action corrosive des nitrates produits par les oxydes d'azote formés à haute température, dans des zones où les contraintes de traction subies par l'enveloppe métallique sont importantes. Il s'agit donc d'un phénomène de corrosion fissurante sous tension.The conditions prevailing in cowpers and in particular the temperature conditions (the latter possibly exceeding 1300 ° in certain areas) frequently cause incidents at the level of their metal walls. In fact, after a few years of operation, there are the appearance of cracks, in particular at the level of the dome and of the combustion shaft. These cracks develop from the internal face of the metal wall, mainly near the welds, parallel or transverse to the latter. They are due to the corrosive action of the nitrates produced by the nitrogen oxides formed at high temperature, in areas where the tensile stresses undergone by the metallic envelope are significant. It is therefore a phenomenon of cracking corrosion under tension.

De tels incidents peuvent prendre des proportions importantes et nécessiter le remplacement complet de ces appareils, ce qui, d'une part, représente un coût extrêmement élevé et, d'autre part, entraîne une immobilisation pouvant avoir pour conséquence l'arrêt complet du haut-fourneau qu'ils desservent.Such incidents can take on significant proportions and require the complete replacement of these devices, which, on the one hand, represents an extremely high cost and, on the other hand, entails immobilization which can result in complete shutdown - oven they serve.

Pour pallier de tels incidents, on a proposé dans le brévet FR--2526810 de réaliser autour de la paroi du cowper une deuxième enveloppe et de remplir l'espace ainsi délimité par les deux enveloppes d'un matériau de remplissage à base de carbure de silicium et de graphite.To remedy such incidents, it has been proposed in patent FR - 2526810 to produce a second envelope around the wall of the cowper and to fill the space thus delimited by the two envelopes with a filling material based on carbide of silicon and graphite.

Le but de la présente invention est de proposer un garnissage de la double enveloppe plus spécialement adapté aux contraintes thermiques à transmettre, tout en étant d'une mise en oeuvre aisée.The purpose of the present invention is to provide a lining of the double jacket more specially adapted to the thermal stresses to be transmitted, while being easy to implement.

A cet effet, l'invention a pour objet une enveloppe pour cowper ou appareil analogue comprenant une première paroi réalisée en tôle soudée et comportant une deuxième paroi en tôle soudée, extérieure et parallèle à la première, ces deux parois délimitant un espace rempli d'un matériau de remplissage, caractérisé en ce que le matériau de remplissage est à base de grenaille d'un métal ou d'un alliage léger, noyée dans un liant à base de résine thermodurcissable.To this end, the subject of the invention is an envelope for a cowper or similar device comprising a first wall made of welded sheet metal and comprising a second wall made of welded sheet metal, external and parallel to the first, these two walls delimiting a space filled with a filling material, characterized in that the filling material is based on shot of a metal or a light alloy, embedded in a binder based on thermosetting resin.

L'invention a également pour objet un procédé de fabrication d'une telle enveloppe, dans lequel on double une paroi intérieure en tôle par une deuxième paroi extérieure en tôle, parallèle à la première, cette-deuxième paroi délimitant avec la première paroi un espace, caractérisé en ce qu'on remplit cet espace avec un matériau de remplissage comprenant de la grenaille d'un métal ou d'un alliage léger et un liant à base de résine thermodurcissable.The invention also relates to a method for manufacturing such an envelope, in which an inner sheet metal wall is doubled by a second outer sheet wall, parallel to the first, this second wall delimiting with the first wall a space , characterized in that this space is filled with a filling material comprising shot of a metal or a light alloy and a binder based on thermosetting resin.

Suivant d'autres caractéristiques :

  • - les particules métalliques ont des dimensions comprises entre 0,2 et 2 mm environ et, de préférence, entre 0,5 et 1,5 mm;
  • - on utilise de l'aluminium ou un alliage à base d'aluminium.
According to other characteristics:
  • - The metallic particles have dimensions of between 0.2 and 2 mm approximately and, preferably, between 0.5 and 1.5 mm;
  • - using aluminum or an aluminum-based alloy.

L'invention va être décrite plus en détail en se référant au dessin annexé, donné uniquement à titre d'exemple et sur lequel :

  • - la Fig. 1 est une vue en coupe de l'enveloppe d'un cowper, réalisée suivant l'invention;
  • - la Fig. 2 est également une vue en coupe montrant un exemple de réalisation dans le cas d'épaisseurs variables des parois.
The invention will be described in more detail with reference to the appended drawing, given solely by way of example and in which:
  • - Fig. 1 is a sectional view of the envelope of a cowper, produced according to the invention;
  • - Fig. 2 is also a sectional view showing an exemplary embodiment in the case of variable wall thicknesses.

On voit sur la Fig.1 une partie d'une enveloppe de cowper ou appareil analogue comprenant une paroi intérieure métallique 1 réalisée en tôle soudée dont l'épaisseur peut être comprise,par exemple entre 15 et 30 mm. Sur la face de cette paroi dirigée vers l'intérieur de l'appareil se trouve un revêtement réfractaire 2.We see in Fig.1 a part of a cowper envelope or similar device comprising a metal inner wall 1 made of welded sheet whose thickness can be comprised, for example between 15 and 30 mm. On the face of this wall facing the interior of the device is a refractory lining 2.

Sur la face extérieure de cette tôle sont appuyées des bandes de tôle 3 disposées horizontalement et verticalement et qui sont soudées à une deuxième série de tôles constituant une paroi extérieure 4.On the external face of this sheet metal are supported sheet metal strips 3 arranged horizontally and vertically and which are welded to a second series of sheets constituting an external wall 4.

Entre les deux parois et les entretoises 3 sont délimités des alvéoles 5 remplis d'un matériau de remplissage 6.Between the two walls and the spacers 3 are delimited cells 5 filled with a filling material 6.

La paroi extérieure est de préférence réalisée dans la même nuance d'acier que la paroi intérieure et présente une épaisseur à peu près comparable.The outer wall is preferably made in the same grade of steel as the inner wall and has a roughly comparable thickness.

A cet égard,dans le mode de réalisation de la Fig.2 on aperçoit une zone de l'enveloppe dans laquelle les parois intérieures et extérieures ont des épaisseurs variables.La paroi intérieure comporte par exemple une partie inférieure 1a présentant une épaisseur de 24 mm et une partie supérieure 1b présentant une épaisseur de 17mm. L'épaisseur de la paroi extérieure 4a,4b peut varier en conséquence,comme représenté sur le dessin. De même,l'épaisseur de l'intervalle 5a,5b délimité entre les deux parois peut varier entre par exemple 3 et 30 mm,une épaisseur de l'ordre de 10mm étant cependant préférée.In this respect, in the embodiment of Fig. 2 we can see an area of the envelope in which the interior and exterior walls have variable thicknesses. The interior wall includes, for example, a lower part 1a having a thickness of 24 mm. and an upper part 1 b having a thickness of 17mm. The thickness of the outer wall 4 a , 4 b can vary accordingly, as shown in the drawing. Similarly, the thickness of the interval 5 a , 5 b delimited between the two walls can vary between for example 3 and 30 mm, a thickness of the order of 10 mm being however preferred.

Le matériau de remplissage de l'intervalle délimité entre les parois est,suivant l'invention,constitué par de la grenaille d'aluminium ou d'un alliage d'aluminium dont les particules ont de préférence les dimensions comprises entre 0,2 et 2mm,par exemple,une dimension de l'ordre de 0,5 ou 1,5 mm étant particulièrement favorable. En fait,la dimension moyenne des granules métalliques est choisie de façon à obtenir un remplissage optimal des alvéoles et est,en tout état de cause,inférieure à la largeur minimale de l'intervalle entre les deux parois.The filling material of the gap between the walls is, according to the invention, constituted by aluminum shot or an aluminum alloy whose particles preferably have the dimensions between 0.2 and 2mm , for example, a dimension of the order of 0.5 or 1.5 mm being particularly favorable. In fact, the average size of the metal granules is chosen so as to obtain an optimal filling of the alveo les and is, in any event, less than the minimum width of the gap between the two walls.

En ce qui concerne la composition de cette grenaille métallique,on utilisera de l'aluminium ou de préférence un alliage à base d'aluminium ou un autre métal ou alliage léger à conductivité thermique élevée.As regards the composition of this metallic shot, aluminum or preferably an aluminum-based alloy or another metal or light alloy with high thermal conductivity will be used.

Les interstices entre les granules métalliques sont remplis par un liant à base de résine ou d'un mélange de résine thermo-durcissable résistant à une température égale ou supérieure à 110°C.Cette résine peut être par exemple une résine polyuréthane phénolique en poudre ou sous forme de gel liquide,contenant les adjuvants nécessaires à son durcissement et éventuellement une charge ainsi que cela est classique dans les techniques de moulage ou de coulée de telles résines.The interstices between the metal granules are filled with a binder based on resin or a mixture of thermosetting resin resistant to a temperature equal to or higher than 110 ° C. This resin can be for example a powdered phenolic polyurethane resin or in the form of a liquid gel, containing the adjuvants necessary for its hardening and optionally a filler as is conventional in the techniques of molding or casting of such resins.

Suivant un mode de mise en oeuvre,le remplissage des alvéoles peut être effectué de la façon suivante : on réalise tout d'abord dans un malaxeur un enrobage des particules métalliques,en utilisant la résine en poudre ou sous forme de gel liquide.According to one embodiment, the filling of the cells can be carried out as follows: first of all, in a mixer, the metal particles are coated, using the resin in powder or in the form of liquid gel.

Puis,on effectue la mise en place du mélange ainsi préparé,par injection ou par coulée,éventuellement sous gaz neutre tel que de l'azote,par des orifices 7 dans lesquels sont introduits par exemple par vissage,des tubulures telles que 8. Des trous d'évents sont prévus,si nécessaire dans cette même paroi 4.Cette mise en place du mélange peut s'effectuer à froid. Pendant cette opération de remplissage ou immédiatement après on effectue une opération de vibration de façon à obtenir un excellent remplissage des alvéoles. Cette opération peut être effectuée au moyen d'un vibreur unidirectionnel haute fréquence.Then, the mixture thus prepared is put into place, by injection or by pouring, optionally under neutral gas such as nitrogen, through orifices 7 into which tubes such as 8 are introduced, for example by screwing. vent holes are provided, if necessary in this same wall 4.This installation of the mixture can be carried out cold. During this filling operation or immediately after, a vibration operation is carried out so as to obtain an excellent filling of the cells. This can be done using a high frequency unidirectional vibrator.

Le durcissage de la résine s'effectue entre 20 minutes et une heure environ après la mise en place du mélange,cette durée dépendant bien entendu des proportions de durcisseur contenues dans le mélange.The curing of the resin takes place between 20 minutes and one hour approximately after the introduction of the mixture, this duration naturally depending on the proportions of hardener contained in the mixture.

Ce durcissement peut éventuellement être accéléré par une légère augmentation de la température.This hardening can possibly be accelerated by a slight increase in temperature.

Les orifices tels que 7 sont ensuite obturés, par exemple au moyen de bouchons vissés ou soudés,de façon à rétablir la continuité de la paroi extérieure 4.The orifices such as 7 are then closed, for example by means of screwed or welded plugs, so as to restore the continuity of the outer wall 4.

Ce type de remplissage est particulièrement intéressant.En effet :

  • - sa bonne conductivité thermique permet d'éviter la formation d'un gradient de température élevé entre les deux parois et par conséquent de limiter les contraintes dues à une dilatation différentielle;
  • - les alvéoles entre les parois étant entièrement remplis en, particulier du fait de la présence d'une résine qui comble les interstices entre les granules métalliques,on empêche la mise en pression de l'espace entre les parois et le passage de tout agent gazeux ou liquide agressif venant de l'enceinte du cowper vers la nouvelle enveloppe ;
  • - le produit de remplissage utilisé n'est pas attaqué par les nitrates de sorte que la paroi extérieure se trouve isolée de ces derniers,même après fissuration de la paroi intérieure ;
  • - le mélange introduit entre les parois a une faible densité,par exemple comprise entre 1,2 et 1,5,ce qui limite les charges et les efforts de traction exercés sur les tôles,ne nécessitant pas une augmentation de l'épaisseur des parois pour résister aux pressions et température régnant dans l'enceinte du cowper;
  • le procédé de mise en place est particulièrement simple puisque il n'est pas nécessaire de chauffer les parois ou si un tel chauffage est réalisé,il n'est effectue qu'à une température relativement faible de quelques dizaines de °C au-dessus de zéro.
This type of filling is particularly interesting, because:
  • - Its good thermal conductivity avoids the formation of a high temperature gradient between the two walls and therefore limits the stresses due to differential expansion;
  • - the cells between the walls being completely filled in, in particular due to the presence of a resin which fills the interstices between the metal granules, the pressurization of the space between the walls and the passage of any gaseous agent is prevented or aggressive liquid from the cowper enclosure to the new envelope;
  • - the filling product used is not attacked by nitrates so that the outer wall is isolated from them, even after cracking of the inner wall;
  • - The mixture introduced between the walls has a low density, for example between 1.2 and 1.5, which limits the loads and the tensile forces exerted on the sheets, not requiring an increase in the thickness of the walls to withstand the pressures and temperature prevailing in the enclosure of the cowper;
  • the installation process is particularly simple since it is not necessary to heat the walls or if such heating is carried out, it is carried out only at a relatively low temperature of a few tens of ° C. above zero.

En variante,les entretoises 3 peuvent être supprimées,le procédé étant cependant mis en oeuvre dans les mêmes conditions.Alternatively, the spacers 3 can be omitted, the method however being implemented under the same conditions.

Claims (8)

1 - Enveloppe pour cowper ou appareil analogue comprenant une première paroi (1) réalisée en tôle soudée et comportant une deuxième paroi (4) en tôle soudée, extérieure et parallèle à la première, ces deux parois délimitant un espace (5) rempli d'un matériau de remplissage (6), caractérisé en ce que le matériau de remplissage est à base de grenaille d'un métal ou d'un alliage léger, noyée dans un liant à base de résine thermodurcissable.1 - Envelope for cowper or similar device comprising a first wall (1) made of welded sheet metal and comprising a second wall (4) of welded sheet metal, external and parallel to the first, these two walls delimiting a space (5) filled with a filling material (6), characterized in that the filling material is based on shot of a metal or a light alloy, embedded in a binder based on thermosetting resin. 2 - Enveloppe suivant la revendication 1, caractérisée en ce que le matériau de remplissage comprend principalement de la grenaille d'aluminium ou d'un alliage à base d'aluminium.2 - Casing according to claim 1, characterized in that the filling material mainly comprises aluminum shot or an aluminum-based alloy. 3 - Enveloppe suivant l'une quelconque des revendications 1 et 2, caractérisée en ce que les particules métalliques ont des dimensions comprises entre 0,2 et 2 mm environ et de préférence entre 0,5 et 1,5 mm.3 - Envelope according to any one of claims 1 and 2, characterized in that the metal particles have dimensions of between 0.2 and 2 mm approximately and preferably between 0.5 and 1.5 mm. 4 - Procédé de fabrication d'une enveloppe suivant l'une quelconque des revendications 1 à 3, dans lequel on double une paroi intérieure (1) en tôle par une deuxième paroi extérieure en tôle (4), parallèle à la première, cette deuxième paroi délimitant avec la première paroi un espace (5), caractérisé en ce qu'on remplit cet espace avec un matériau de remplissage (6) comprenant de la grenaille d'un métal ou d'un alliage léger et un liant à base de résine thermodurcissable.4 - A method of manufacturing an envelope according to any one of claims 1 to 3, wherein an inner wall (1) in sheet metal is doubled by a second outer wall in sheet metal (4), parallel to the first, this second wall delimiting with the first wall a space (5), characterized in that this space is filled with a filling material (6) comprising shot of a metal or a light alloy and a resin-based binder thermosetting. 5 - Procédé suivant la revendication 4, caractérisé en ce qu'on mélange préalablement la grenaille métallique et le liant à base de résine.5 - Process according to claim 4, characterized in that the metallic shot and the resin-based binder are mixed beforehand. 6 - Procédé suivant l'une quelconque des revendications 4 et 5, caractérisé en ce que le matériau de remplissage est mis en place à la température ambiante ou à une température légèrement supérieure.6 - Method according to any one of claims 4 and 5, characterized in that the filling material is placed at room temperature or at a slightly higher temperature. 7 --Procédé suivant l'une quelconque des revendications 4 à 6, caractérisé en ce qu'on effectue, après le remplissage des alvéoles, une opération de vibration de l'enveloppe.7 - Process according to any one of claims 4 to 6, characterized in that one performs, after the filling of the cells, a vibration operation of the envelope. 8 - Cowper ou appareil analogue, comprenant une enveloppe suivant l'une quelconque des revendications 1 à 3.8 - Cowper or similar device, comprising an envelope according to any one of claims 1 to 3.
EP85400055A 1984-01-18 1985-01-11 Improved shells for hot blast stoves or identical apparatus Expired EP0149575B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400055T ATE30599T1 (en) 1984-01-18 1985-01-11 MANIFOLDS OF AIR HEATER OR IDENTICAL DEVICES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8400746 1984-01-18
FR8400746A FR2560215B1 (en) 1984-01-18 1984-01-18 IMPROVEMENT IN ENVELOPES FOR COWPERS OR THE LIKE

Publications (3)

Publication Number Publication Date
EP0149575A2 true EP0149575A2 (en) 1985-07-24
EP0149575A3 EP0149575A3 (en) 1985-08-28
EP0149575B1 EP0149575B1 (en) 1987-11-04

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EP85400055A Expired EP0149575B1 (en) 1984-01-18 1985-01-11 Improved shells for hot blast stoves or identical apparatus

Country Status (11)

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EP (1) EP0149575B1 (en)
JP (1) JPS61500920A (en)
KR (1) KR850700257A (en)
AR (1) AR231843A1 (en)
AT (1) ATE30599T1 (en)
BR (1) BR8504777A (en)
CA (1) CA1253687A (en)
DE (1) DE3560907D1 (en)
ES (1) ES8700329A1 (en)
FR (1) FR2560215B1 (en)
WO (1) WO1985003310A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1006169C2 (en) * 1997-05-30 1998-12-01 Hoogovens Staal Bv Refractory wall structure
WO1998054367A1 (en) * 1997-05-30 1998-12-03 Hoogovens Staal B.V. Refractory wall structure
NL1008625C2 (en) * 1998-03-18 1999-09-21 Hoogovens Staal Bv Wall construction for a metallurgical vessel and blast furnace provided with such a wall construction and metal beams for use therewith.
WO2011089617A1 (en) * 2010-01-19 2011-07-28 Tega Industries Limited Mixing drum for a blast furnace

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Publication number Priority date Publication date Assignee Title
CN112537611B (en) * 2020-11-26 2023-02-21 上海宝冶冶金工程有限公司 Replacing device

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FR1272483A (en) * 1959-02-09 1961-09-29 Air heating devices for blast or blast furnaces, with very active heat exchange gasket and shielded, sealed combustion chamber, with independent and undeformable insulation
FR2214092A1 (en) * 1973-01-17 1974-08-09 British Aluminium Co Ltd
DE2410657A1 (en) * 1974-03-04 1975-09-11 Mannesmann Ag Polyolefine corrosion-protective film for blast heaters - fitted between steel jacket and refractory lining
FR2318933A1 (en) * 1975-07-22 1977-02-18 Inst Str Metallokon Blast furnace stone with gas tight lining - obtd. by spray coating a gunite layer with metal or heat proof synthetics
DE2742109A1 (en) * 1977-09-19 1979-04-12 Eberhard Dipl Ing Boehmer Wind heater for blast furnaces - has internal sheath made of high alloy steel preventing stress corrosion at high temps.
FR2526810A1 (en) * 1982-05-14 1983-11-18 Didier Werke Ag COWPER APPARATUS PROVIDED WITH A DOUBLE HOLLOW ENVELOPE FOR HIGH RANGE FURNACES

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FR1272483A (en) * 1959-02-09 1961-09-29 Air heating devices for blast or blast furnaces, with very active heat exchange gasket and shielded, sealed combustion chamber, with independent and undeformable insulation
FR2214092A1 (en) * 1973-01-17 1974-08-09 British Aluminium Co Ltd
DE2410657A1 (en) * 1974-03-04 1975-09-11 Mannesmann Ag Polyolefine corrosion-protective film for blast heaters - fitted between steel jacket and refractory lining
FR2318933A1 (en) * 1975-07-22 1977-02-18 Inst Str Metallokon Blast furnace stone with gas tight lining - obtd. by spray coating a gunite layer with metal or heat proof synthetics
DE2742109A1 (en) * 1977-09-19 1979-04-12 Eberhard Dipl Ing Boehmer Wind heater for blast furnaces - has internal sheath made of high alloy steel preventing stress corrosion at high temps.
FR2526810A1 (en) * 1982-05-14 1983-11-18 Didier Werke Ag COWPER APPARATUS PROVIDED WITH A DOUBLE HOLLOW ENVELOPE FOR HIGH RANGE FURNACES

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CHEMICAL ABSTRACTS, vol. 88, 1978, page 88, no. 52330u, Columbus, Ohio, US; P. de V. DU PLESSIS: "Heat transport in a cryo-tip refrigerator via a metal filled epoxy" & CRYOGENICS 1977, 17(12), 707 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1006169C2 (en) * 1997-05-30 1998-12-01 Hoogovens Staal Bv Refractory wall structure
WO1998054367A1 (en) * 1997-05-30 1998-12-03 Hoogovens Staal B.V. Refractory wall structure
US6234790B1 (en) * 1997-05-30 2001-05-22 Corus Staal B.V. Refractory wall structure
CN1075114C (en) * 1997-05-30 2001-11-21 霍戈文斯·斯塔尔公司 Refractory wall structure
NL1008625C2 (en) * 1998-03-18 1999-09-21 Hoogovens Staal Bv Wall construction for a metallurgical vessel and blast furnace provided with such a wall construction and metal beams for use therewith.
WO1999047711A1 (en) * 1998-03-18 1999-09-23 Corus Staal Bv Wall structure for a metallurgical vessel and blast furnace provided with a wall structure of this nature
US6416708B1 (en) 1998-03-18 2002-07-09 Corus Staal Bv Wall structure for a metallurgical vessel and blast furnace provided with a wall structure of this nature
WO2011089617A1 (en) * 2010-01-19 2011-07-28 Tega Industries Limited Mixing drum for a blast furnace
CN102803518A (en) * 2010-01-19 2012-11-28 泰加工业有限公司 Mixing drum for a blast furnace
CN102803518B (en) * 2010-01-19 2015-05-06 泰加工业有限公司 Mixing drum for a blast furnace
EA024254B1 (en) * 2010-01-19 2016-08-31 Тега Индастриз Лимитед Mixing drum for a blast furnace

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BR8504777A (en) 1985-12-24
FR2560215A1 (en) 1985-08-30
ES540122A0 (en) 1986-10-16
AR231843A1 (en) 1985-03-29
JPS61500920A (en) 1986-05-08
KR850700257A (en) 1985-12-26
CA1253687A (en) 1989-05-09
ATE30599T1 (en) 1987-11-15
FR2560215B1 (en) 1989-01-06
EP0149575A3 (en) 1985-08-28
ES8700329A1 (en) 1986-10-16
DE3560907D1 (en) 1987-12-10
WO1985003310A1 (en) 1985-08-01
EP0149575B1 (en) 1987-11-04

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