EP0721559A1 - Permanent device for emptying the draining channels of metallurgical apparatuses and its use - Google Patents

Permanent device for emptying the draining channels of metallurgical apparatuses and its use

Info

Publication number
EP0721559A1
EP0721559A1 EP95923398A EP95923398A EP0721559A1 EP 0721559 A1 EP0721559 A1 EP 0721559A1 EP 95923398 A EP95923398 A EP 95923398A EP 95923398 A EP95923398 A EP 95923398A EP 0721559 A1 EP0721559 A1 EP 0721559A1
Authority
EP
European Patent Office
Prior art keywords
block
insert
main block
cavity
channel
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Withdrawn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
EP95923398A
Other languages
German (de)
French (fr)
Inventor
Marc Gondolf
Jean-Pierre Targe
Paul Antoine WÜRTZ
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.)
Calderys France SAS
Original Assignee
Lafarge Refractaires Monolithiques
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 Lafarge Refractaires Monolithiques filed Critical Lafarge Refractaires Monolithiques
Publication of EP0721559A1 publication Critical patent/EP0721559A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment

Definitions

  • the present invention relates to a permanent device for emptying channels of metallurgical apparatus. It also relates to the use of such a device.
  • the present invention therefore relates to a permanent device for emptying channels of metallurgical apparatus essentially comprising:
  • a main refractory block provided with a through cavity of substantially frustoconical shape and guide rails
  • a refractory insert of substantially frustoconical shape provided over its entire length with an internal channel, if necessary partially or completely filled with a sealing mass, and intended to be inserted into the cavity formed within the block main and
  • the device according to the invention ensures the continuous presence of prefabricated elements allowing the emptying of a channel of a metallurgical apparatus without resorting to external means of perforation.
  • the main block is positioned and embedded in the refractory wall of the wall, the orifice the through cavity which has the smallest opening being directed towards the inside of the channel. This orifice will therefore be found, under operating conditions, in contact with the liquid flow.
  • the insert is then introduced into the through cavity of the main block which it will marry directly or, if necessary, after having been coated externally with a refractory paste.
  • the plate is then positioned so as to seal the insert and to ensure the rigidity of the assembly.
  • the interior channel of the insert is filled with a sealing mass, refractory or not, if this has not yet been accomplished.
  • the insert After draining, the insert can be removed and replaced.
  • the assembly of the closure plate and the filling of the internal channel of the insert with a new closure mass are then carried out as indicated above.
  • the invention also relates to such a use.
  • Figure 1 is a partial schematic representation of the mother channel or main channel of a blast furnace, chosen simply by way of example, seen from above, the last wall of which is fitted in the zone of maximum flow and at the level the lowest of a device according to the invention.
  • Figure 2 is a front view of the end of the mother channel, equipped with a device according to the invention, the closure plate has been removed.
  • Figure 3 is a section along AA of a device according to the invention whose cover plate has been removed.
  • Figure 4 is an exploded perspective of an embodiment of the device according to the invention.
  • Figure S is a partial schematic top view, in section, of another embodiment of a device according to the invention, the insert and the closure plate have been removed.
  • Figure 6 is a partial schematic section along BB of this other embodiment.
  • the direction of the blast furnace is indicated by an arrow F.
  • the liquid and high temperature product flowing from the blast furnace into the mother channel (1) separates into two liquid streams, a slag stream evacuated by the channel (2) and a flow of cast iron evacuated by the channel (4), after having encountered a dam or siphon (3) on its path.
  • the device (6) according to the invention is installed in the lower zone (S) of the mother channel.
  • Figure 2 is shown the end of the mother channel, equipped with a device (6) according to the invention which has been removed the closure plate.
  • the bottom (7) of the mother channel comes flush with the lower part of the channel passing through the insert.
  • FIG 4 a device according to the invention which comprises a main refractory block (10), a refractory insert (20) and a closure plate (30).
  • the main block (10), which can be of any shape, is advantageously of substantially cylindrical shape (not shown) or parallelepiped. Within it is a through cavity of substantially frustoconical shape (11).
  • This cavity opens onto two opposite faces of the main block, called by convention, respectively, rear face and internal front face of the main block; the orifice (12) located on the rear face in question has an opening of dimensions smaller than those of the orifice (13) located on the internal front face (14).
  • the shape and dimensions of the cavity (11) are adapted to those of the insert (20) that said cavity is intended to accommodate.
  • the through cavity (11) has an axis of symmetry which is perpendicular to the rear face of the main block (10).
  • each reservation can be continuous or discontinuous.
  • the main block has a substantially parallelepiped shape; each of the two lateral faces substantially parallel to each other and substantially orthogonal to the internal front face (14) of said main block is advantageously provided with at least one reservation, respectively (17a) and (17b).
  • These reservations are preferably on the one hand parallel to the stop of the dihedral formed by the rear face of the main block and each of the faces carrying them and on the other hand located opposite. According to an advantageous variant, they together form a single reservation extending on each of the two faces concerned and on the face (18) forming the base of the main block (10).
  • the lower part or base (18) of the main block (10) may also include, in the immediate vicinity of the internal front face (14) of said main block and in the zone delimited by the external front face (16) and by each of the two parts or lateral faces of the block in question, a recess (19) or in each of the two zones further delimited by the T-shaped recess which extends over the entire height of said external front face, a step, respectively (19a) and (19b), the step being directed towards the upper part or face of said block.
  • the refractory insert (20) of substantially frustoconical shape is provided over its entire length with an internal channel (21).
  • the shape and dimensions of the insert are adapted to those of the through cavity (11) formed in the main block (10) - 6 - intended to receive it, if necessary after having coated the outside with a refractory paste.
  • the insert (20) and the channel (21) are coaxial and, preferably, the channel (21) has a substantially frustoconical shape, the smallest opening of which opens onto the smallest end (22). of the insert in question.
  • each of the two ends of the insert (20) is planar and perpendicular to the axis of symmetry thereof.
  • the insert (20) if necessary partially or completely pre-closed, will be introduced into the through cavity (11) through its end (22) whose orifice has the smallest opening diameter.
  • At the periphery of the insert (20) can be formed a relief which preserves a projecting part (24) forming a crown near the end (23) of said insert which has the largest opening diameter. Such a draft facilitates the removal of the insert.
  • the opening dimensions of the insert (20) and of the through cavity (11) of the main block adapted as indicated above to each other, are also adapted to the dimension of the channel that these elements will be required to equip. ; the minimum dimension of the orifice directed towards the liquid flow will above all be dictated by the concern to avoid any risk of blockage of the channel by freezing of the metal in question at low temperature at the end of a production campaign; the maximum size of the orifices will above all be dictated by the degree of control of the flow of liquid metal desired.
  • the closure plate (30) has an appropriate shape and dimensions so that it can be inserted from the top and descend by gravity into the guide slides (15a) and (15b) formed on the main block.
  • this plate of substantially parallelepiped shape has a thickness compatible with the expected mechanical strength.
  • the plate in question may include cut sides (31a) and (31b) formed respectively in the lower part of each of its sides and / or a loop (32) whose base is provided a rod embedded in the upper part of said plate.
  • the main block (10) can also be produced in at least two parts, the shape and the respective dimensions of which are adapted to one another.
  • the front part (40) which can be made of a material similar to or distinct from that constituting the rear part (41), surrounds the slides (15a) and (15b). This part (40) can extend over the entire height of the main block. It can also be extended to constitute the external front face (16) of said block and / or a section of said block.
  • the part (40) has on its rear face (42) at least one pair of projections forming a projection (43a) and (43b), advantageously arranged on either side of the plane of symmetry of the main block passing through the axis of symmetry of the through cavity (11), and fitting into the corresponding recesses formed on the anterior face of the part (41).
  • At least part of the essential components of the device according to the invention must be made of one or more refractory materials.
  • the device in question will be subjected during its use not only to high temperatures but to various factors known to those skilled in the art (including the nature of the hot liquid flowing in the channel to be fitted) which will intervene to dictate the precise choice of refractory materials likely to be retained.
  • the main block (10) is advantageously made for all or part of a refractory material similar or identical to that constituting the masonry which will surround it in the channel to be fitted and more particularly to that of the materials constituting the wear layer of the channel in question.
  • the front part (40) can be made of a refractory material, ceramic or metal such as steel or cast iron.
  • the refractory insert (20) will, in operating condition, be subjected to significant hot erosion. It is recommended to take this additional constraint into account when choosing the constituent material.
  • the plate (30) must have very good mechanical strength and the material constituting it must be provided with a connection system compatible with that of the material constituting the main block (10) so that that these two elements of the device according to the invention play in substantially the same way during the rise in temperature to reach the operating temperature.
  • Each of the essential components of the device according to the invention can advantageously be produced by molding of suitable refractory compositions.
  • refractory materials capable of being suitable for the production of the essential constituents of the device in question, there may be mentioned: lime, alumina, carbon, silicon carbide, zircon, silica, magnesia, spinel, chromium and mixtures of two or more of these constituents.
  • This paste will advantageously have a composition close to that of the fresh material used for molding the insert in question.
  • the use of the device according to the invention requires an operation of plugging the internal channel (21) of the insert with a sealing mass. This can be done at any time, including immediately after manufacturing the insert in question. For this purpose, it is possible to use any filling mass based on metal, ceramic or refractory.
  • the use of a device according to the invention also allows a significant improvement in the quality of the emptying of the channel which it equips by eliminating at least partially catching of the metal on the bottom of said channel. As the use of a drill bit is no longer necessary, there are no longer any cracks caused by vibrations of the drill bit on the walls of the channel surrounding the liquid metal discharge hole.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Permanent device for emptying the draining channels of metallurgical apparatuses essentially comprising a) a main refractory unit (10) with a substantially truncated-cone-shaped through space (11) and guide slides (15a) and (15b); b) a substantially truncated-cone-shaped refractory insertion piece (20), having, along its whole length, an inner channel (21) optionally partially or completely filled with a sealing mass, and insertable in the space formed in the refractory unit; and c) a sealing plate (30) to be inserted into the guide slides (15a) and (15b) of the main unit (10). The invention also concerns the use of such a device.

Description

DISPOSΓΠF PERMANENT POUR LA VIDANGE DE RIGOLES D'APPAREILS METALLURGIQUES ET SON UTILISATION PERMANENT DEVICE FOR THE DRAINING OF RIGOLES OF METALLURGICAL APPARATUSES AND ITS USE
La présente invention concerne un dispositif permanent pour la vidange de rigoles d'appareils métallurgiques. Elle a également trait à l'utilisation d'un tel dispositif.The present invention relates to a permanent device for emptying channels of metallurgical apparatus. It also relates to the use of such a device.
Lors des arrêts de contrôle, de réfection ou d'urgence, les appareils d'élaboration ou de maintien de métaux liquides dont le système d'évacuation repose sur des chenaux ou rigoles de passage de flux liquides tels le métal, le laitier ou un mélange des deux, sont confrontés au problème de la vidange de ces canaux.During control, repair or emergency stops, devices for developing or maintaining liquid metals, the evacuation system of which rests on channels or channels for the passage of liquid flows such as metal, slag or a mixture of the two, face the problem of emptying these channels.
Ainsi, par exemple, lors d'un arrêt de la coulée dans la rigole principale d'un haut- fourneau pour un contrôle visuel de l'usure de la paroi réfractaire de la rigole notamment, si le chenal doit être totalement vidangé, il est d'une pratique courante d'offrir un passage au métal dans la dernière paroi, au niveau le plus bas, et de permettre l'évacuation de la masse liquide résiduelle par le trou pratiqué.Thus, for example, when stopping the casting in the main channel of a blast furnace for a visual check of the wear of the refractory wall of the channel in particular, if the channel must be completely drained, it is of a common practice to offer a passage to the metal in the last wall, at the lowest level, and to allow the evacuation of the residual liquid mass through the hole made.
Pour ce faire, il est nécessaire de recourir à une machine perforatrice munie d'un trépan capable de percer la masse de bouchage réfractaire installée dans le trou de vidange après la dernière opération de vidange.To do this, it is necessary to use a perforating machine provided with a drill bit capable of piercing the refractory plugging mass installed in the drain hole after the last draining operation.
Pour être pleinement efficace, cette opération nécessite un perçage en alignement axial parfait, ce qui, en pratique et compte tenu des appareils existants, n'est jamais obtenu. Les inconvénients susceptibles d'être alors constatés sont multiples :To be fully effective, this operation requires drilling in perfect axial alignment, which, in practice and taking into account existing devices, is never obtained. The drawbacks likely to be observed are manifold:
- le forage dévié endommage la paroi du trou et induit une fissuration et une dislocation du matériau réfractaire constituant le mur du chenal ;- the deviated drilling damages the wall of the hole and induces cracking and dislocation of the refractory material constituting the wall of the channel;
- la rotation du trépan se situant au bout d'une tige de longueur importante ne peut pas être parfaitement maîtrisée et le trou ainsi pratiqué accuse le plus souvent une forte conicité préjudiciable à sa fiabilité ultérieure, une fois celui- ci rebouché ;- The rotation of the drill bit located at the end of a rod of considerable length cannot be perfectly controlled and the hole thus made most often shows a large conicity detrimental to its subsequent reliability, once it is plugged;
- le plus souvent, l'utilisation du seul trépan ne permettant pas de mener l'opération à bon terme, il convient de finir le débouchage à l'aide d'une lance à oxygène, ce qui entraîne une détérioration importante du garnissage réfractaire environnant.- most often, the use of the only drill bit does not allow the operation to be completed, it is necessary to finish the unblocking using an oxygen lance, which leads to a significant deterioration of the surrounding refractory lining .
Par ailleurs, il est difficile de repérer le trou de vidange à bonne hauteur de la rigole en perçant la paroi de celle-ci depuis l'extérieur. Au surplus, l'ensemble de l'opération qui nécessite un matériel lourd et onéreux, demande également une présence humaine importante dans des conditions de travail dont le caractère pénible et non exempt de danger est à souligner. Au caractère hasardeux du perçage s'ajoutent les risques d'une coulée à haute température, rapide et imprévue.Furthermore, it is difficult to locate the drain hole at the correct height of the channel by piercing the wall of the latter from the outside. In addition, the entire operation, which requires heavy and expensive equipment, also requires a significant human presence in working conditions, the painful and not free of danger of which must be emphasized. In addition to the hazardous nature of drilling, there is the risk of high-temperature, rapid and unexpected casting.
Il serait donc manifestement souhaitable de pouvoir vidanger de tels appareils et des équipements similaires sans recourir à des opérations de perforation.It would therefore obviously be desirable to be able to empty such devices and similar equipment without resorting to perforation operations.
n serait également hautement souhaitable de pouvoir vidanger de tels équipements de manière extrêmement simple et dans la mesure du possible, de manière moins risquée.It would also be highly desirable to be able to drain such equipment in an extremely simple manner and as far as possible, in a less risky manner.
La présente invention a donc pour objet un dispositif permanent pour la vidange de rigoles d'appareils métallurgiques comprenant essentiellement :The present invention therefore relates to a permanent device for emptying channels of metallurgical apparatus essentially comprising:
a) un bloc principal réfractaire muni d'une cavité traversante de forme sensiblement tronconique et de glissières de guidage,a) a main refractory block provided with a through cavity of substantially frustoconical shape and guide rails,
b) un insert réfractaire de forme sensiblement tronconique, pourvu sur toute sa longueur d'un canal interne, le cas échéant rempli partiellement ou totalement d'une masse d'obturation, et destiné à s'insérer dans la cavité ménagée au sein du bloc principal etb) a refractory insert of substantially frustoconical shape, provided over its entire length with an internal channel, if necessary partially or completely filled with a sealing mass, and intended to be inserted into the cavity formed within the block main and
c) une plaque d'obturation destinée à s'insérer dans les glissières de guidage du bloc principal.c) a blanking plate intended to be inserted in the guide rails of the main block.
Le dispositif selon l'invention assure la présence continue d'éléments préfabriqués permettant la vidange d'une rigole d'appareil métallurgique sans recourir à des moyens extérieurs de perforation.The device according to the invention ensures the continuous presence of prefabricated elements allowing the emptying of a channel of a metallurgical apparatus without resorting to external means of perforation.
En effet, lors de la réalisation de la rigole ou de la remise en état complète du mur de celle-ci dans lequel le dispositif en cause sera utilisé, le bloc principal est positionné et noyé dans la paroi réfractaire du mur, l'orifice de la cavité traversante qui présente la plus petite ouverture étant dirigé vers l'intérieur de la rigole. Cet orifice se trouvera donc, dans les conditions de fonctionnement, au contact du flux liquide. L'insert est ensuite introduit dans la cavité traversante du bloc principal qu'il épousera directement ou, le cas échéant, après avoir été enduit extérieurement d'une pâte réfractaire. La plaque vient alors se positionner de manière à obturer l'insert et à assurer la rigidité de l'ensemble.Indeed, during the realization of the channel or the complete repair of the wall thereof in which the device in question will be used, the main block is positioned and embedded in the refractory wall of the wall, the orifice the through cavity which has the smallest opening being directed towards the inside of the channel. This orifice will therefore be found, under operating conditions, in contact with the liquid flow. The insert is then introduced into the through cavity of the main block which it will marry directly or, if necessary, after having been coated externally with a refractory paste. The plate is then positioned so as to seal the insert and to ensure the rigidity of the assembly.
Avant la mise en fonctionnement de la rigole ainsi équipée, on vient remplir le canal intérieur de l'insert d'une masse d'obturation, réfractaire ou non, si cela n'a pas encore été accompli.Before operating the channel thus equipped, the interior channel of the insert is filled with a sealing mass, refractory or not, if this has not yet been accomplished.
Lors de la vidange de la rigole ainsi équipée, la plaque d'obturation est déposée. Le bouchon remplissant le canal intérieur de l'insert est évacué sous l'effet de la poussée des masses liquides résiduelles se trouvant alors dans la rigole. La vidange s'effectue ainsi naturellement.When emptying the channel thus equipped, the cover plate is removed. The plug filling the inner channel of the insert is evacuated under the effect of the push of the residual liquid masses then being in the channel. Draining takes place naturally.
Après la vidange, l'insert peut être démonté et remplacé. Le montage de la plaque d'obturation et le remplissage du canal interne de l'insert par une nouvelle masse d'obturation sont alors réalisés comme indiqué ci-avant.After draining, the insert can be removed and replaced. The assembly of the closure plate and the filling of the internal channel of the insert with a new closure mass are then carried out as indicated above.
L'invention a également pour objet une telle utilisation.The invention also relates to such a use.
Le dispositif selon l'invention sera mieux compris à la lumière de la description d'un mode de réalisation et des figures annexées.The device according to the invention will be better understood in the light of the description of an embodiment and the appended figures.
La figure 1 est une représentation schématique partielle de la rigole mère ou rigole principale d'un haut-fourneau, choisie à simple titre d'exemple, vue de dessus, dont la dernière paroi est équipée dans la zone d'écoulement maximal et au niveau le plus bas d'un dispositif selon l'invention.Figure 1 is a partial schematic representation of the mother channel or main channel of a blast furnace, chosen simply by way of example, seen from above, the last wall of which is fitted in the zone of maximum flow and at the level the lowest of a device according to the invention.
La figure 2 est une vue de face de l'extrémité de la rigole mère, équipée d'un dispositif selon l'invention dont la plaque d'obturation a été déposée.Figure 2 is a front view of the end of the mother channel, equipped with a device according to the invention, the closure plate has been removed.
La figure 3 est une coupe selon AA d'un dispositif selon l'invention dont la plaque d'obturation a été déposée.Figure 3 is a section along AA of a device according to the invention whose cover plate has been removed.
La figure 4 est une perspective éclatée d'un mode de réalisation du dispositif selon l'invention. La figure S est une vue de dessus schématique partielle, en coupe, d'un autre mode de réalisation d'un dispositif selon l'invention, dont l'insert et la plaque d'obturation ont été déposés.Figure 4 is an exploded perspective of an embodiment of the device according to the invention. Figure S is a partial schematic top view, in section, of another embodiment of a device according to the invention, the insert and the closure plate have been removed.
La figure 6 est une coupe schématique partielle selon BB de cet autre mode de réalisation.Figure 6 is a partial schematic section along BB of this other embodiment.
Dans l'ensemble des figures, des signes de référence identiques désignent des éléments similaires.Throughout the figures, identical reference signs designate similar elements.
Sur la figure 1, la direction du haut-fourneau est indiquée par une flèche F. Le produit liquide et à haute température s'écoulant du haut-fourneau dans la rigole mère (1) se sépare en deux flux liquides, un flux de laitier évacué par la rigole (2) et un flux de fonte évacuée par la rigole (4), après avoir rencontré sur son trajet un barrage ou siphon (3). Dans la zone basse (S) de la rigole mère est installé le dispositif (6) selon l'invention.In Figure 1, the direction of the blast furnace is indicated by an arrow F. The liquid and high temperature product flowing from the blast furnace into the mother channel (1) separates into two liquid streams, a slag stream evacuated by the channel (2) and a flow of cast iron evacuated by the channel (4), after having encountered a dam or siphon (3) on its path. In the lower zone (S) of the mother channel, the device (6) according to the invention is installed.
Sur la figure 2 est représentée l'extrémité de la rigole mère, équipée d'un dispositif (6) selon l'invention dont on a déposé la plaque d'obturation. Le fond (7) de la rigole mère vient affleurer la partie inférieure du canal traversant l'insert.In Figure 2 is shown the end of the mother channel, equipped with a device (6) according to the invention which has been removed the closure plate. The bottom (7) of the mother channel comes flush with the lower part of the channel passing through the insert.
Sur la figure 4 est représenté un dispositif selon l'invention qui comprend un bloc principal réfractaire (10), un insert réfractaire (20) et une plaque d'obturation (30).In Figure 4 is shown a device according to the invention which comprises a main refractory block (10), a refractory insert (20) and a closure plate (30).
Sur les figures S et 6 est représenté un mode d'exécution du bloc principal en deux parties distinctes et dont la partie antérieure (40), dirigée vers la face avant sera plus amplement décrite dans ce qui suit.In Figures S and 6 is shown an embodiment of the main block in two separate parts and whose front part (40), directed towards the front face will be more fully described in the following.
Le bloc principal (10), qui peut être de forme quelconque, est avantageusement de forme sensiblement cylindrique (non représentée) ou parallélépipèdique. Au sein de celui-ci est ménagée une cavité traversante de forme sensiblement tronconique (11).The main block (10), which can be of any shape, is advantageously of substantially cylindrical shape (not shown) or parallelepiped. Within it is a through cavity of substantially frustoconical shape (11).
Cette cavité débouche sur deux faces opposées du bloc principal, appelées respectivement, par convention, face arrière et face avant interne du bloc principal ; l'orifice (12) situé sur la face arrière en cause présente une ouverture de dimensions inférieures à celles de l'orifice (13) situé sur la face avant interne (14). La forme et les dimensions de la cavité (11) sont adaptées à celles de l'insert (20) que ladite cavité est destinée à accueillir. A proximité immédiate de la face avant interne (14) du bloc principal sont ménagées deux glissières de guidage (15a) et (15b) situées en vis à vis, s'étendant le long de ladite face avant et dirigées vers la face avant externe (16) du bloc en cause. Ces glissières forment ensemble un évidement de section sensiblement en T dont la forme et les dimensions sont adaptées à celles de la plaque d'obturation (30) qu'elles sont destinées à accueillir et autorisent l'introduction de l'insert (20) par l'évidement en cause qui interrompt la face avant externe (16) du bloc principal, de préférence sur toute sa hauteur.This cavity opens onto two opposite faces of the main block, called by convention, respectively, rear face and internal front face of the main block; the orifice (12) located on the rear face in question has an opening of dimensions smaller than those of the orifice (13) located on the internal front face (14). The shape and dimensions of the cavity (11) are adapted to those of the insert (20) that said cavity is intended to accommodate. In the immediate vicinity of the internal front face (14) of the main block are formed two guide slides (15a) and (15b) located opposite, extending along said front face and directed towards the external front face ( 16) of the block in question. These slides together form a substantially T-shaped section recess whose shape and dimensions are adapted to those of the closure plate (30) that they are intended to accommodate and allow the insertion of the insert (20) by the recess in question which interrupts the external front face (16) of the main unit, preferably over its entire height.
Pour faciliter la réalisation de l'ensemble des éléments et la mise en place du bloc principal, la cavité traversante (11) présente un axe de symétrie qui est perpendiculaire à la face arrière du bloc principal (10).To facilitate the production of all the elements and the positioning of the main block, the through cavity (11) has an axis of symmetry which is perpendicular to the rear face of the main block (10).
Pour assurer un meilleur maintien du bloc principal (10) au sein du mur de rigole dans lequel il sera installé, une ou plusieurs réservations (17) sont ménagées sur la partie périphérique dudit bloc qui entoure la cavité traversante (11). Chaque réservation peut être continue ou discontinue. Selon une variante, le bloc principal présente une forme sensiblement parallélépipèdique; chacune des deux faces latérales sensiblement parallèles entre elles et sensiblement orthogonales à la face avant interne (14) dudit bloc principal est avantageusement munie d'au moins une réservation, respectivement (17a) et (17b). Ces réservations sont de préférence d'une part parallèles à l'arrête du dièdre formé par la face arrière du bloc principal et chacune des faces les portant et d'autre part situées en vis à vis. Selon une variante avantageuse, elles forment ensemble une réservation unique s'étendant sur chacune des deux faces concernées et sur la face (18) formant la base du bloc principal (10).To ensure better maintenance of the main block (10) within the channel wall in which it will be installed, one or more reservations (17) are provided on the peripheral part of said block which surrounds the through cavity (11). Each reservation can be continuous or discontinuous. According to a variant, the main block has a substantially parallelepiped shape; each of the two lateral faces substantially parallel to each other and substantially orthogonal to the internal front face (14) of said main block is advantageously provided with at least one reservation, respectively (17a) and (17b). These reservations are preferably on the one hand parallel to the stop of the dihedral formed by the rear face of the main block and each of the faces carrying them and on the other hand located opposite. According to an advantageous variant, they together form a single reservation extending on each of the two faces concerned and on the face (18) forming the base of the main block (10).
Pour faciliter les opérations de pose et de dépose de la plaque d'obturation (30), la partie inférieure ou base (18) du bloc principal (10) peut comporter, en outre, à proximité immédiate de la face avant interne (14) dudit bloc principal et dans la zone délimitée par la face avant externe (16) et par chacune des deux parties ou faces latérales du bloc en cause, un décrochement (19) ou dans chacune des deux zones délimitées en outre par l'évidement en T qui s'étend sur toute la hauteur de ladite face avant externe, un décrochement, respectivement (19a) et (19b), le décrochement étant dirigé vers la partie ou face supérieure dudit bloc.To facilitate the installation and removal operations of the closure plate (30), the lower part or base (18) of the main block (10) may also include, in the immediate vicinity of the internal front face (14) of said main block and in the zone delimited by the external front face (16) and by each of the two parts or lateral faces of the block in question, a recess (19) or in each of the two zones further delimited by the T-shaped recess which extends over the entire height of said external front face, a step, respectively (19a) and (19b), the step being directed towards the upper part or face of said block.
L'insert réfractaire (20) de forme sensiblement tronconique est pourvu sur toute sa longueur d'un canal intérieur (21). La forme et les dimensions de l'insert sont adaptées à celles de la cavité traversante (11) ménagée dans le bloc principal (10) - 6 - destinée à le recevoir, le cas échéant après en avoir enduit l'extérieur d'une pâte réfractaire.The refractory insert (20) of substantially frustoconical shape is provided over its entire length with an internal channel (21). The shape and dimensions of the insert are adapted to those of the through cavity (11) formed in the main block (10) - 6 - intended to receive it, if necessary after having coated the outside with a refractory paste.
Selon un mode de réalisation avantageux, l'insert (20) et le canal (21) sont coaxiaux et, de préférence, le canal (21) présente une forme sensiblement tronconique dont la plus petite ouverture débouche sur la plus petite extrémité (22) de l'insert en cause.According to an advantageous embodiment, the insert (20) and the channel (21) are coaxial and, preferably, the channel (21) has a substantially frustoconical shape, the smallest opening of which opens onto the smallest end (22). of the insert in question.
Pour faciliter la réalisation de l'ensemble des éléments et leur mise en place, chacune des deux extrémités de l'insert (20) est plane et perpendiculaire à l'axe de symétrie de celui-ci. L'insert (20), le cas échéant partiellement ou totalement préobturé, sera introduit dans la cavité traversante (11) par son extrémité (22) dont l'orifice présente le plus petit diamètre d'ouverture.To facilitate the production of all of the elements and their positioning, each of the two ends of the insert (20) is planar and perpendicular to the axis of symmetry thereof. The insert (20), if necessary partially or completely pre-closed, will be introduced into the through cavity (11) through its end (22) whose orifice has the smallest opening diameter.
A la périphérie de l'insert (20) peut être ménagée une dépouille qui préserve une partie saillante (24) formant une couronne à proximité de l'extrémité (23) dudit insert qui présente le plus grand diamètre d'ouverture. Une telle dépouille facilite la dépose de l'insert.At the periphery of the insert (20) can be formed a relief which preserves a projecting part (24) forming a crown near the end (23) of said insert which has the largest opening diameter. Such a draft facilitates the removal of the insert.
Bien entendu, il convient alors de ménager un évidement de forme et de dimensions sensiblement correspondantes de la cavité traversante (11) du bloc principal, à proximité de la face avant interne (14) dudit bloc.Of course, it is then necessary to provide a recess of substantially corresponding shape and dimensions of the through cavity (11) of the main block, near the internal front face (14) of said block.
Les dimensions d'ouverture de l'insert (20) et de la cavité traversante (11) du bloc principal adaptées comme indiqué ci-avant les unes aux autres, sont également adaptées à la dimension de la rigole que ces éléments seront amenés à équiper ; la dimension minimale de l'orifice dirigé vers le flux liquide sera avant tout dictée par le souci d'éviter tout risque d'obturation du canal par le gel du métal en cause à basse température en fin d'une campagne de production ; la dimension maximale des orifices sera avant tout dictée par le degré de contrôle du flux de métal liquide souhaité.The opening dimensions of the insert (20) and of the through cavity (11) of the main block adapted as indicated above to each other, are also adapted to the dimension of the channel that these elements will be required to equip. ; the minimum dimension of the orifice directed towards the liquid flow will above all be dictated by the concern to avoid any risk of blockage of the channel by freezing of the metal in question at low temperature at the end of a production campaign; the maximum size of the orifices will above all be dictated by the degree of control of the flow of liquid metal desired.
La plaque d'obturation (30) présente une forme et des dimensions appropriées pour qu'elle puisse s'insérer par le haut et descendre par gravité dans les glissières de guidage (15a) et (15b) ménagées sur le bloc principal. En général, cette plaque de forme sensiblement parallélépipèdique est dotée d'une épaisseur compatible avec la résistance mécanique attendue. Pour en faciliter l'introduction et la dépose, la plaque en cause peut comporter des pans coupés (31a) et (31b) ménagés respectivement dans la partie inférieure de chacun de ses côtés et/ou une boucle (32) dont la base est munie d'une tige encastrée dans la partie supérieure de ladite plaque.The closure plate (30) has an appropriate shape and dimensions so that it can be inserted from the top and descend by gravity into the guide slides (15a) and (15b) formed on the main block. In general, this plate of substantially parallelepiped shape has a thickness compatible with the expected mechanical strength. To facilitate its introduction and removal, the plate in question may include cut sides (31a) and (31b) formed respectively in the lower part of each of its sides and / or a loop (32) whose base is provided a rod embedded in the upper part of said plate.
Le bloc principal (10) peut également être réalisé en au moins deux parties dont la forme et les dimensions respectives sont adaptées l'une à l'autre.The main block (10) can also be produced in at least two parts, the shape and the respective dimensions of which are adapted to one another.
La partie antérieure (40) qui peut être réalisée en un matériau similaire à ou distinct de celui constituant la partie postérieure (41), entoure les glissières (15a) et (15b). Cette partie (40) peut s'étendre sur toute la hauteur du bloc principal. Elle peut également se prolonger pour constituer la face avant externe (16) dudit bloc et/ou une tranche dudit bloc.The front part (40) which can be made of a material similar to or distinct from that constituting the rear part (41), surrounds the slides (15a) and (15b). This part (40) can extend over the entire height of the main block. It can also be extended to constitute the external front face (16) of said block and / or a section of said block.
La partie (40) présente sur sa face arrière (42) au moins une paire de décrochements formant saillie (43a) et (43b), avantageusement disposés de part et d'autre du plan de symétrie du bloc principal passant par l'axe de symétrie de la cavité traversante (11), et s'emboîtant dans les évidements correspondants ménagés sur la face antérieure de la partie (41).The part (40) has on its rear face (42) at least one pair of projections forming a projection (43a) and (43b), advantageously arranged on either side of the plane of symmetry of the main block passing through the axis of symmetry of the through cavity (11), and fitting into the corresponding recesses formed on the anterior face of the part (41).
Pour assurer un meilleur maintien des parties (40) et (41), il est judicieux de munir l' ensemble de moyens d'ancrage (44a) et (44b) prenant naissance sur la face (42) et disposés dans les parties supérieure et inférieure du bloc principal, de part et d'autre de la cavité traversante (11).To ensure better retention of the parts (40) and (41), it is advisable to provide the set of anchoring means (44a) and (44b) originating on the face (42) and arranged in the upper parts and bottom of the main block, on either side of the through cavity (11).
Comme indiqué ci-avant, au moins une partie des constituants essentiels du dispositif selon l'invention doit être réalisée en un ou des matériaux réfractaires.As indicated above, at least part of the essential components of the device according to the invention must be made of one or more refractory materials.
Toutefois, le dispositif en cause sera soumis lors de son utilisation non seulement à de hautes températures mais à divers facteurs connus de l'homme de l'art (dont la nature du liquide chaud s'écoulant dans la rigole à équiper) qui interviendront pour dicter le choix précis des matériaux réfractaires susceptibles d'être retenus.However, the device in question will be subjected during its use not only to high temperatures but to various factors known to those skilled in the art (including the nature of the hot liquid flowing in the channel to be fitted) which will intervene to dictate the precise choice of refractory materials likely to be retained.
Le bloc principal (10) est avantageusement réalisé pour tout ou partie en un matériau réfractaire similaire ou identique à celui constituant la maçonnerie qui l'entourera dans la rigole à équiper et plus particulièrement à celui des matériaux constituant la couche d'usure de la rigole en cause. Lorsque celui-ci est réalisé en deux parties, la partie antérieure (40) peut être réalisée en un matériau réfractaire, en céramique ou en métal tel de l'acier ou de la fonte.The main block (10) is advantageously made for all or part of a refractory material similar or identical to that constituting the masonry which will surround it in the channel to be fitted and more particularly to that of the materials constituting the wear layer of the channel in question. When it is made in two parts, the front part (40) can be made of a refractory material, ceramic or metal such as steel or cast iron.
L'insert réfractaire (20) sera, en condition de fonctionnement, soumis à une importante érosion à chaud. Il est recommandé de tenir compte de cette contrainte supplémentaire pour en choisir le matériau constitutif.The refractory insert (20) will, in operating condition, be subjected to significant hot erosion. It is recommended to take this additional constraint into account when choosing the constituent material.
Pour un bon fonctionnement de l'ensemble, la plaque (30) devra présenter une très bonne résistance mécanique et le matériau la constituant devra être doté d'un système de liaison compatible avec celui du matériau constituant le bloc principal (10) de telle sorte que ces deux éléments du dispositif selon l'invention jouent sensiblement de la même manière lors de la montée en température pour atteindre la température de régime.For proper operation of the assembly, the plate (30) must have very good mechanical strength and the material constituting it must be provided with a connection system compatible with that of the material constituting the main block (10) so that that these two elements of the device according to the invention play in substantially the same way during the rise in temperature to reach the operating temperature.
Chacun des constituants essentiels du dispositif selon l'invention peut être avantageusement réalisé par moulage de compositions réfractaires appropriées.Each of the essential components of the device according to the invention can advantageously be produced by molding of suitable refractory compositions.
A titre d'exemples de matériaux réfractaires susceptibles de convenir à la réalisation des constituants essentiels du dispositif en cause, on peut citer : la chaux, l'alumine, le carbone, le carbure de silicium, le zircon, la silice, la magnésie, la spinelle, le chrome et les mélanges de deux ou plusieurs de ces constituants.As examples of refractory materials capable of being suitable for the production of the essential constituents of the device in question, there may be mentioned: lime, alumina, carbon, silicon carbide, zircon, silica, magnesia, spinel, chromium and mixtures of two or more of these constituents.
Si besoin est, il est possible d'enduire la partie externe de l'insert (20) qui sera en contact avec la cavité traversante (11) du bloc principal, d'une pâte réfractaire.If necessary, it is possible to coat the external part of the insert (20) which will be in contact with the through cavity (11) of the main block, with a refractory paste.
Cette pâte sera avantageusement de composition voisine de celle du matériau frais ayant servi au moulage de l'insert en cause.This paste will advantageously have a composition close to that of the fresh material used for molding the insert in question.
Le choix parmi les divers matériaux, le dimensionnement précis de chaque élément essentiel du dispositif selon l'invention ainsi que la forme précise que celui-ci prendra, sont avant tout dictés par les diverses contraintes présentes sur le site à équiper que l'homme de l'art sera à même d'apprécier.The choice among the various materials, the precise dimensioning of each essential element of the device according to the invention as well as the precise form which this one will take, are above all dictated by the various constraints present on the site to be equipped that the man of art will be able to appreciate.
Comme indiqué en tête du présent mémoire, l'utilisation du dispositif selon l'invention nécessite une opération de bouchage du canal interne (21) de l'insert par une masse d'obturation. Cette opération peut être réalisée à tout moment, y compris immédiatement après la fabrication de l'insert en cause. A cette fin, il est possible d'utiliser n'importe quelle masse d'obturation à base de métal, de céramique ou de réfractaire.As indicated at the beginning of this memo, the use of the device according to the invention requires an operation of plugging the internal channel (21) of the insert with a sealing mass. This can be done at any time, including immediately after manufacturing the insert in question. For this purpose, it is possible to use any filling mass based on metal, ceramic or refractory.
Le recours à un dispositif selon l'invention permet en outre une amélioration notable de la qualité de la vidange de la rigole qu'il équipe en supprimant au moins partiellement accrochage du métal sur le fond de ladite rigole. Le recours à un trépan n'étant plus nécessaire, on n'observe plus de fissures causées par les vibrations du trépan sur les parois de la rigole entourant le trou d'évacuation du métal liquide. The use of a device according to the invention also allows a significant improvement in the quality of the emptying of the channel which it equips by eliminating at least partially catching of the metal on the bottom of said channel. As the use of a drill bit is no longer necessary, there are no longer any cracks caused by vibrations of the drill bit on the walls of the channel surrounding the liquid metal discharge hole.

Claims

REVENDICATIONS
1) Dispositif permanent pour la vidange de rigoles d'appareils métallurgiques comprenant essentiellement : a) un bloc principal réfractaire muni d'une cavité traversante de forme sensiblement tronconique et de glissières de guidage, b) un insert réfractaire de forme sensiblement tronconique, pourvu sur toute sa longueur d'un canal interne, le cas échéant rempli partiellement ou totalement d'une masse d'obturation, et destiné à s'insérer dans la cavité ménagée dans le bloc principal et c) une plaque d'obturation destinée à s'insérer dans les glissières de guidage du bloc principal.1) Permanent device for emptying channels of metallurgical apparatus essentially comprising: a) a main refractory block provided with a through cavity of substantially frustoconical shape and guide rails, b) a refractory insert of substantially frustoconical shape, provided on the entire length of an internal channel, if necessary partially or completely filled with a sealing mass, and intended to be inserted into the cavity formed in the main block and c) a sealing plate intended to insert into the guide rails of the main unit.
2) Dispositif selon la revendication 1, caractérisé en ce qu'il est constitué par : a) un bloc principal réfractaire (10) muni d'une cavité traversante (11) de forme sensiblement tronconique et de glissières de guidage (15a) et (15b) en vis à vis et ménagées le long de la face avant interne (14) dudit bloc sur laquelle débouche l'orifice (13) de la cavité traversante présentant les plus grandes dimensions d'ouverture ; b) un insert réfractaire (20) de forme sensiblement tronconique, dont la forme et les dimensions sont adaptées a celles de la cavité traversante (11) ménagée au sein du bloc principal (10), et qui est pourvu sur toute sa longueur d'un canal intérieur (21), le cas échéant rempli partiellement ou totalement d'une masse d'obturation, insert qui est destiné à s'introduire dans ladite cavité ; et c) une plaque d'obturation (30) de forme sensiblement parallélépipèdique, dont les dimensions sont adaptées à celles des glissières de guidage (15a) et (15b) ménagées dans le bloc principal (10).2) Device according to claim 1, characterized in that it consists of: a) a main refractory block (10) provided with a through cavity (11) of substantially frustoconical shape and guide rails (15a) and ( 15b) opposite and formed along the internal front face (14) of said block on which opens the orifice (13) of the through cavity having the largest opening dimensions; b) a refractory insert (20) of substantially frustoconical shape, the shape and dimensions of which are adapted to those of the through cavity (11) formed within the main block (10), and which is provided over its entire length with an internal channel (21), optionally partially or completely filled with a sealing mass, insert which is intended to be introduced into said cavity; and c) a closure plate (30) of substantially parallelepiped shape, the dimensions of which are adapted to those of the guide rails (15a) and (15b) formed in the main block (10).
3) Dispositif selon la revendication 1 ou 2, caractérisé en ce que la partie périphérique du bloc principal (10) qui entoure la cavité traversante (11) est munie d'au moins une réservation (17).3) Device according to claim 1 or 2, characterized in that the peripheral part of the main block (10) which surrounds the through cavity (11) is provided with at least one reservation (17).
4) Dispositif selon la revendication 1 ou 2, caractérisé en ce que le bloc principal (10) présente une forme sensiblement parallélépipèdique et en ce que chacune des deux faces latérales du bloc principal, orthogonales à la face avant interne (14) dudit bloc, est munie d'au moins une réservation, respectivement (17a) et (17b).4) Device according to claim 1 or 2, characterized in that the main block (10) has a substantially parallelepiped shape and in that each of the two lateral faces of the main block, orthogonal to the internal front face (14) of said block, is provided with at least one reservation, respectively (17a) and (17b).
5) Dispositif selon la revendication 4, caractérisé en ce que les réservations (17a) et (17b) sont en vis à vis et, de préférence, forment ensemble une réservation unique s'étendant sur chacune des faces latérales en cause et sur la face formant la base (18) du bloc principal.5) Device according to claim 4, characterized in that the reservations (17a) and (17b) are opposite and, preferably, together form a single reservation extending on each of the side faces in question and on the face forming the base (18) of the main block.
6) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le canal interne (21) de l'insert (20) est de forme sensiblement tronconique.6) Device according to any one of the preceding claims, characterized in that the internal channel (21) of the insert (20) is of substantially frustoconical shape.
7) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert (20) et son canal interne (21) sont coaxiaux.7) Device according to any one of the preceding claims, characterized in that the insert (20) and its internal channel (21) are coaxial.
8) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la cavité traversante (11) du bloc principal présente un axe de symétrie qui est perpendiculaire à la face arrière dudit bloc sur laquelle débouche l'orifice (12) de la cavité traversante qui présente les plus petites dimensions d'ouverture.8) Device according to any one of the preceding claims, characterized in that the through cavity (11) of the main block has an axis of symmetry which is perpendicular to the rear face of said block on which the orifice (12) of the through cavity which has the smallest opening dimensions.
9) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, à la périphérie de l'insert (20) est ménagée une dépouille qui préserve une partie saillante (24) formant une couronne à proximité de l'extrémité (23) dudit insert qui présente les plus grandes dimensions d'ouverture et en ce qu'un évidement de forme et de dimensions sensiblement correspondantes est ménagé dans la cavité traversante (11) du bloc principal, à proximité de la face avant interne (14) dudit bloc.9) Device according to any one of the preceding claims, characterized in that, at the periphery of the insert (20) is provided a relief which preserves a projecting part (24) forming a crown near the end (23 ) of said insert which has the largest opening dimensions and in that a recess of substantially corresponding shape and dimensions is formed in the through cavity (11) of the main block, near the internal front face (14) of said insert block.
10) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les glissières de guidage (15a) et (15b) ménagées sur le bloc principal sont dirigées vers la face avant externe (16) du bloc en cause et forment ensemble un évidement de section droite sensiblement en T, qui interrompt ladite face avant et dont la forme et les dimensions sont adaptées à celles de la plaque d'obturation (30) qu'il est destiné à accueillir et autorisent l'introduction de l'insert (20) par l'évidement en cause. 11) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie inférieure ou base (18) du bloc principal (10) comporte, à proximité immédiate de la face avant interne (14) dudit bloc principal et dans la zone délimitée par la face avant externe (16) et par chacune des deux faces latérales du bloc en cause, un décrochement (19), dirigé vers la face supérieure dudit bloc.10) Device according to any one of the preceding claims, characterized in that the guide rails (15a) and (15b) formed on the main block are directed towards the external front face (16) of the block in question and together form a recess of substantially T-shaped cross section, which interrupts said front face and whose shape and dimensions are adapted to those of the closure plate (30) that it is intended to accommodate and allow the insertion of the insert ( 20) by the recess in question. 11) Device according to any one of the preceding claims, characterized in that the lower part or base (18) of the main block (10) comprises, in the immediate vicinity of the internal front face (14) of said main block and in the area delimited by the external front face (16) and by each of the two lateral faces of the block in question, a step (19), directed towards the upper face of said block.
12) Dispositif selon la revendication 10, caractérisé en ce que l'évidement de section droite sensiblement en T interrompt la face avant externe (16) sur toute sa hauteur et en ce que la base (18) du bloc principal (10) comporte, à proximité immédiate de la face avant interne (14) dudit bloc principal et dans chacune des zones délimitées par l'évidement en T, par la face avant externe (16) et par chacune des deux faces latérales du bloc en cause, un décrochement, respectivement (19a) et (19b), dirigé vers la face supérieure dudit bloc.12) Device according to claim 10, characterized in that the recess of substantially T-shaped cross section interrupts the external front face (16) over its entire height and in that the base (18) of the main block (10) comprises, in the immediate vicinity of the internal front face (14) of said main block and in each of the zones delimited by the T-shaped recess, by the external front face (16) and by each of the two lateral faces of the block in question, a recess, respectively (19a) and (19b), directed towards the upper face of said block.
13) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le bloc principal (10) comporte au moins deux parties (40) et (41) dont la forme et les dimensions sont adaptées l'une à l'autre ; la partie antérieure (40) entourant les glissières de guidage (15a) et (15b) présente sur sa face arrière (42) au moins une paire de décrochements (43a) et (43b) ; lesdits décrochements s'emboîtent dans les évidements correspondants ménagés sur la face antérieure de la partie (41).13) Device according to any one of the preceding claims, characterized in that the main block (10) comprises at least two parts (40) and (41) whose shape and dimensions are adapted to one another; the front part (40) surrounding the guide rails (15a) and (15b) has on its rear face (42) at least one pair of recesses (43a) and (43b); said recesses fit into the corresponding recesses formed on the anterior face of the part (41).
14) Dispositif selon la revendication 13, caractérisé en ce que les décrochements (43a) et (43b) sont disposés de part et d'autre du plan de symétrie du bloc principal passant par l'axe de la cavité traversante (11).14) Device according to claim 13, characterized in that the recesses (43a) and (43b) are arranged on either side of the plane of symmetry of the main block passing through the axis of the through cavity (11).
15) Dispositif selon la revendication 13 ou 14, caractérisé en ce que la face arrière (42) de la partie antérieure (40) présente des moyens d'ancrage (44a) et (44b) disposés dans les parties supérieures et inférieures du bloc principal, de part et d'autre de la cavité traversante (11).15) Device according to claim 13 or 14, characterized in that the rear face (42) of the front part (40) has anchoring means (44a) and (44b) arranged in the upper and lower parts of the main block , on either side of the through cavity (11).
16) Utilisation d'un dispositif selon l'une quelconque des revendications précédentes comme moyen permanent de la vidange de rigoles d'appareils métallurgiques.16) Use of a device according to any one of the preceding claims as a permanent means for emptying channels of metallurgical apparatus.
17) Utilisation selon la revendication 16, caractérisée en ce que, lors du montage : a) le bloc principal (10) est noyé dans la maçonnerie de la rigole à équiper, l'orifice (12) de la cavité traversante (11), qui présente les plus petites dimensions d'ouverture, étant dirigé vers l'intérieur de ladite rigole et positionné de telle sorte que le fond (7) de la rigole vienne affleurer la partie inférieure du canal interne (21) de l'insert (20); b) l'insert (20) est alors introduit dans la cavité traversante du bloc principal, le cas échéant après avoir été enduit en sa périphérie d'une pâte réfractaire17) Use according to claim 16, characterized in that, during assembly: a) the main block (10) is embedded in the masonry of the channel to be fitted, the orifice (12) of the through cavity (11), which has the smallest opening dimensions, being directed towards the interior of said channel and positioned so that the bottom (7) of the channel comes flush with the lower part of the internal channel (21) of the insert (20); b) the insert (20) is then introduced into the through cavity of the main block, if necessary after having been coated on its periphery with a refractory paste
» c) la plaque d'obturation (30) est ensuite mise en place dans les glissières de guidage (15a) et (15b), et d) le canal interne (21) de l'insert est alors rempli, si cela n'est déjà fait, d'une masse d'obturation.C) the closure plate (30) is then placed in the guide rails (15a) and (15b), and d) the internal channel (21) of the insert is then filled, if this is not the case. is already done, with a shutter mass.
18) Utilisation selon la revendication 16, caractérisée en ce que, lors de la vidange de la rigole : a) la plaque d'obturation (30) est déposée, b) la masse de bouchage remplissant le canal interne (21) de l'insert est expulsée naturellement et, c) le cas échéant, l'insert (20) est déposé. 18) Use according to claim 16, characterized in that, during the emptying of the channel: a) the closure plate (30) is removed, b) the plugging mass filling the internal channel (21) of the insert is naturally expelled and, c) if necessary, the insert (20) is deposited.
EP95923398A 1994-06-17 1995-06-16 Permanent device for emptying the draining channels of metallurgical apparatuses and its use Withdrawn EP0721559A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9407686A FR2721325B1 (en) 1994-06-17 1994-06-17 Permanent device for emptying channels and metallurgical apparatus and its use.
FR9407686 1994-06-17
PCT/FR1995/000797 WO1995035473A1 (en) 1994-06-17 1995-06-16 Permanent device for emptying the draining channels of metallurgical apparatuses and its use

Publications (1)

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EP0721559A1 true EP0721559A1 (en) 1996-07-17

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EP95923398A Withdrawn EP0721559A1 (en) 1994-06-17 1995-06-16 Permanent device for emptying the draining channels of metallurgical apparatuses and its use

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EP (1) EP0721559A1 (en)
JP (1) JPH09502013A (en)
KR (1) KR960704207A (en)
AU (1) AU2796795A (en)
FR (1) FR2721325B1 (en)
WO (1) WO1995035473A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788122B1 (en) * 1998-12-30 2001-03-23 Electricite De France SOLID WASTE FUSION OVEN

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1084089A (en) * 1900-01-01
DE384780C (en) * 1921-12-03 1923-11-29 Zenzes G M B H Tiltable, undivided small converter
FR732082A (en) * 1932-02-11 1932-09-13 Slag dam for blast furnace or similar casting channel
GB408206A (en) * 1932-09-02 1934-04-03 Brassert & Co Improvements in gates for the runners of blast and like metal smelting furnaces
JPH01312018A (en) * 1988-06-13 1989-12-15 Nippon Steel Corp Method of opening and closing residual iron discharge port of molten iron trough
JPH03158405A (en) * 1989-11-14 1991-07-08 Nippon Steel Corp Device for discharging remaining iron in molten iron trough
JP3270520B2 (en) * 1992-06-03 2002-04-02 川崎製鉄株式会社 Slag flow switching device
JP2572187B2 (en) * 1992-09-04 1997-01-16 川崎製鉄株式会社 Tapping gutter residual iron removing device and its stopper operating device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9535473A1 *

Also Published As

Publication number Publication date
FR2721325A1 (en) 1995-12-22
KR960704207A (en) 1996-08-31
AU2796795A (en) 1996-01-15
JPH09502013A (en) 1997-02-25
FR2721325B1 (en) 1996-08-30
WO1995035473A1 (en) 1995-12-28

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