EP0012310A1 - Charging apparatus for a shaft furnace - Google Patents

Charging apparatus for a shaft furnace Download PDF

Info

Publication number
EP0012310A1
EP0012310A1 EP79104836A EP79104836A EP0012310A1 EP 0012310 A1 EP0012310 A1 EP 0012310A1 EP 79104836 A EP79104836 A EP 79104836A EP 79104836 A EP79104836 A EP 79104836A EP 0012310 A1 EP0012310 A1 EP 0012310A1
Authority
EP
European Patent Office
Prior art keywords
bell
segments
distributor
hopper
skirt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP79104836A
Other languages
German (de)
French (fr)
Other versions
EP0012310B1 (en
Inventor
Edouard Legille
Pierre Mailliet
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT79104836T priority Critical patent/ATE4601T1/en
Publication of EP0012310A1 publication Critical patent/EP0012310A1/en
Application granted granted Critical
Publication of EP0012310B1 publication Critical patent/EP0012310B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden

Definitions

  • the present invention relates to a device for loading a shaft furnace, comprising a rotary loading hopper with movable bottom, a sealed envelope around this hopper, the upper part of this envelope being provided with at least one insertion orifice. of material and equipped with a sealing valve, while the bottom of the envelope cooperates with a bell which can slide along the vertical axis of the furnace and of the device.
  • This kind of loading device more commonly referred to as a "bell jar” fitted, a few years ago, almost all blast furnaces and is still currently the most common type of loading devices.
  • This kind of device which are distinguished, among others, by the number of bells.
  • the use of several superimposed bells is necessary to avoid putting the oven enclosure in direct contact with the atmosphere during the introduction of the material to be put into the oven. This obviously requires a very precise sequence of successive operations of moving the bells.
  • this type of loading device has several drawbacks which become all the more serious the larger their dimensions and the pressure of the furnace.
  • the lower bell which is the largest and which functions as a distributor and, generally a sealing member to delimit an upper airlock, presents, because of its size, serious manufacturing problems.
  • bells of this size pose problems for their operation and their replacement. This maneuver requires not only an important means for balancing the p re- sions but also control means powerful enough, which generally increases the height of the installation.
  • the object of the present invention is to provide a new calf loading device of the kind described in the preamble which makes it possible to significantly reduce the aforementioned drawbacks, in other words to provide a new loading device of the conventional type which allows variations in the mode of distribution of the material to be placed in the oven, in particular depending on the nature of this and operating conditions of the oven, while respecting other essential criteria such as, for example, low height, simple mechanism, ease of dismantling and maintenance, etc.
  • a device of the type described in the preamble is essentially characterized by a material distributor in the form of a frustoconical skirt with variable opening angle, arranged around the vertical axis of the device below the bell.
  • the skirt is composed of a number of overlapping segments, each having the shape of a sector of an annular surface, mounted by their narrow side on a ring of pivots and each connected to a rod arranged in the vertical axis and connected to a control unit arranged outside, to undergo a sliding movement and change the opening angle of the skirt.
  • connection between the different segments and the sliding rod is advantageously carried out by means of a star-shaped plate whose points are provided with a penetrating lug and sliding in an elongated opening of the associated segment.
  • a cylindrical deflector arranged between the distributor and the small bell deflects the current of the loading material flowing from the hopper onto the distributor which, in turn, deflects the current along a conical sheet on the loading surface.
  • Adjusting the opening angle of the skirt by sliding the rod makes it possible to change the angle of discharge of this sheet and, consequently, the radius of the annular surface of the material deposit. It is therefore possible to change after each loading cycle, corresponding to the flow of the contents of the rotary hopper, the dumping angle or else make corrections to the loading profile based on the information provided by a profile probing device. of the loading surface.
  • the dispenser according to the present invention a j in addition, the advantage of being cleared by the collar of the blast furnace through the joint associated with the small bell and after removal thereof.
  • a loading device designated, as a whole, by the reference 12, mounted on a blast furnace 10.
  • This loading device 12 is mounted on a flange 14 forming part of the neck 16 blast furnace 10.
  • a loading hopper 18 is mounted in a rotating cage 21 associated with a guide device 20, 22 allowing vertical movement of the hopper.
  • a drive motor 24 with peripheral drive and intended to communicate to the cage 21 and the hopper 18 a rotary movement by means of a drive pinion 26 and a bearing 28.
  • the guide system 20, 22 may consist of two pairs of rollers with concave rolling surface each cooperating with guides with convex surface fixed on the loading hopper 18.
  • the latter rests by its own weight on a conical bottom 30, with conicity turned upwards and serving as a protective and wear cone for a bell 32.
  • the conical bottom 30 is integral with an axial sheath 34 composed of anti-wear elements surrounding a hollow rod 38 for suspending the small bell 32. This sheath 34 is suspended from this hollow rod 38 by means of a bearing 36.
  • the action of the motor 24 communicates a gyratory movement to the assembly formed by the rotating cage 21, the guide system 20, 22, the hopper 18, the conical bottom 30 ; and the sheath 34, while a vertical sliding movement of the hollow rod 38 allows the hopper 18 to slide vertically relative to its guide system 20,22.
  • a sealed envelope 40 surrounds the rotary hopper 18. This envelope is tightly fixed on the flange 14 and can be closed, on the blast furnace side 10, by the bell 32 when the latter is in the raised position applied to a seat 42 fixed to the base of the casing 40.
  • the watertight casing 40 communicates at the upper part with a recipe chute 44 from which it can be isolated in a leaktight manner by a sealing valve 46. Above this recipe chute 44 terminates means of transport known per se and not shown, such as for example skips or a conveyor belt, for bringing the loading material.
  • a conical distributor 48 suspended from the bell 32 by means of an intermediate circular piece 50 integral with the bell 32.
  • the distributor 48 therefore follows the upward and downward movement of the bell 32 and when the latter is lowered, the distributor 48 is moved to the position in phantom.
  • the distributor 48 has a frustoconical surface or skirt 52 formed by a number of overlapping segments 54. These segments 54 each have the shape of a sector of an annular surface, slightly curved, so as to generate this conical surface when they are mounted, one after the other, in partial overlap, around the axis O of the furnace.
  • the part 50 has on its inner face a ring of ribs 56, the number of which corresponds to that of the segments 54. However, it is not necessary for all these ribs to extend to the bell 32.
  • Each of the segments 54 is articulated on the corresponding rib 56 by means of pivots 58.
  • Each of the segments 54 has on its inner concave face a flank 60, constituted by a plate welded or poured perpendicularly on the segments 54. These flanks 60 each have a slot 62 into which penetrates a lug 64 provided on a corresponding point 68 of a star plate 66 whose number of points 68 corresponds to the number of segments 54.
  • the plate 66 is fixed to the lower end of a control rod 70 coaxial with the hollow rod 38 and connected outside the sealed envelope 40 to a drive mechanism for raising or lowering the plate 66.
  • each of the segments 54 is determined by the position of the plate 66.
  • this plate 66 is in the lowered position relative to with the small bell 32, the segments 54 are separated and the opening angle of the skirt 52 is maximum.
  • the control rod 70 is raised relative to the small bell 32, the segments 54 are folded, in a group, in the direction of the axis O and the opening angle of the skirt 52 gradually decreases until in the position according to Figure 4.
  • the skirt 52 passes through a cylindrical position, that is to say that in the extreme position according to Figure 4, the taper of the skirt is opposite to that of figure 1.
  • the pivot angle of each of the segments 54 between the two extreme positions is 60 °.
  • This angle is represented by ⁇ in FIG. 1.
  • each of the lugs 64 slides in the slot 62 of the corresponding flank 60 in order to ensure the transition between the vertical movement of the lugs 64 and the pivoting movement of the slots 62 around the pivots 58.
  • the angle ⁇ is equal to 60 °, it is preferable that the axis of the slots 62 occupies in the two extreme positions an angle of 30 ° relative to the horizontal passing through the pivots 58.
  • the number of segments must, of course, be a divisor of 360. This number must, moreover, be fairly high, that is to say at least equal to 16 and, preferably, equal to 24, this for thermal and geometric reasons. In fact, the segments must not be too large to keep the thermal expansion within acceptable limits. The geometric reason is that the width of the segments on the outer side opposite the pivots 58 cannot be too high to allow sufficient closing of the skirt 52.
  • the segments 54 will be made of special refractory steel having good wear resistance properties. These steels are well known in the field concerned.
  • a circular deflector 72 is provided around the distributor 58. The lower edge of this deflector 72 converges in the direction of the axis O so as to deflect the material flowing from the hopper 18 onto the skirt 52 of the distributor 48.
  • a control unit 74 for actuating the bell 32 and controlling the opening angle of the skirt 52 is mounted immediately above the envelope 40.
  • the hollow rod 38 of the bell 32 passes through the envelope 40 by a press -throat and is connected by means of a removable collar 82 to the rod 80 of a hydraulic cylinder 78.
  • the control rod 70 of the distributor 48 passes through the entire hollow rod 38 as well as the cylinder 78 and is actuated by a second cylinder 84 mounted above the jack 78.
  • This second jack 84 is integral with the piston of the jack 78, so that the jack 84 follows the vertical sliding movement of the hollow rod 38.
  • References 86 and 88 designate supply lines for a cooling fluid for cooling certain parts of the distributor 48.
  • Line 86 is intended to supply a certain number of tubes, not shown, arranged in a ring between the hollow rod. 38 and the control rod 70. These tubes are intended to bring a cooling fluid into conduits circulating through the ribs 56, the pivots 58, the segments 54 and possibly the sides 60.
  • a second circulation of a cooling fluid can be provided through the interior of the control rod 70 from the pipe 88 as far as the points 68 of the star plate 66.
  • the cooling of the plate 66 and of the different segments 54 increases their mechanical resistance and therefore reduces the risk of deformation.
  • the lower bell For filling the loading hopper 18, the lower bell must be applied in a manner waterproof against its seat 42 so that the oven 10 is sealed in relation to the outside. After opening the valve 46, the loading material can be introduced through the acceptance chute 44.
  • the motor 24 communicates thereto a continuous or intermittent rotary movement according to that the material is brought into the chute 44 by a conveyor belt or by a skip installation.
  • the valve 46 is closed and a pressure equalization is carried out by bringing the pressure inside the envelope, by means known per se, to a pressure corresponding approximately to that prevailing at inside the oven.
  • the next phase consists in actuating the jack 78 to lower the hollow rod 38 supporting the bell 32.
  • This descent of the bell 32 drives, by gravity, the sheath 34, that is to say the entire hopper of loading 18, by sliding in the guide system 20,22. From a certain moment (see FIG. 2), the descent of the hopper 18 is stopped by a ring of shock absorbers incorporated in the lower part of the casing 40. In the figures, we see two of these shock absorbers 90, 91. It should be noted that during the downward movement of the hopper 18, the motor 24 is stopped.
  • the seat 42 is bolted to the upper face of a lower flange 94 of the casing 40 whose internal diameter is greater than the maximum external diameter of the bell 32 and of the distributor 48. This makes it possible to dismantle the assembly comprising the bell 32 and the distributor 48 by release through the flange 94 after having dismantled the seat 42 and the bottom 92 of the hopper 18 and brought the distributor 48 to the position illustrated in FIG. 4.
  • control unit 74 is mounted directly on the casing 40 allows an extremely low construction and makes the usual bell tower superfluous.
  • a second factor which comes into play favorably for a low construction is the fact that in the proposed loading device, there is only one bell left and that the distributor 48 can be brought closer to this bell 32, since it does not there is more storage between this bell 32 and the distributor 48.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Vending Machines For Individual Products (AREA)
  • Drying Of Solid Materials (AREA)
  • Jib Cranes (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Frying-Pans Or Fryers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The profile of material deposited on the hearth of a pressurized furnace is controlled by means of a charging installation including a lower charging bell which has, suspended therefrom, a variable geometry distributor which may be controlled to select the point of deposition of material delivered to the furnace. The charging bell cooperates with an intermediate storage hopper, positioned within a hermetically sealable casing, whereby the hopper may be alternately filled with material and emptied by permitting the material to fall onto the distributor via an annular opening defined when the bell is lowered.

Description

La présente invention concerne un dispositif de chargement d'un four à cuve, comprenant une trémie de chargement rotative à fond mobile, une enveloppe étanche autour de cette trémie, la partie supérieure de cette enveloppe étant pourvue d'au moins un orifice d'introduction de matière et équipée d'un clapet d'étanchéité, tandis que le fond de l'enveloppe coopère avec une cloche pouvant coulisser suivant l'axe vertical du four et du dispositif.The present invention relates to a device for loading a shaft furnace, comprising a rotary loading hopper with movable bottom, a sealed envelope around this hopper, the upper part of this envelope being provided with at least one insertion orifice. of material and equipped with a sealing valve, while the bottom of the envelope cooperates with a bell which can slide along the vertical axis of the furnace and of the device.

Ce genre de dispositif de chargement, désigné d'une façon plus courante par "gueulard à cloches" équipait, voilà quelques années, la quasi totalité des hauts fourneaux et est encore actuellement le type le plus courant des dispositifs de chargement. Il existe évidemment de nombreuses variantes de ce genre de dispositifs qui se distinguent, entre autres, par le nombre de cloches. L'utilisation de plusieurs cloches superposées est nécessaire pour éviter de mettre l'enceinte du four en relation directe avec l'atmosphère lors de l'introduction de la matière à enfourner. Ceci impose évidemment une séquence bien précise des opérations successives de déplacement des cloches.This kind of loading device, more commonly referred to as a "bell jar" fitted, a few years ago, almost all blast furnaces and is still currently the most common type of loading devices. There are obviously many variants of this kind of device which are distinguished, among others, by the number of bells. The use of several superimposed bells is necessary to avoid putting the oven enclosure in direct contact with the atmosphere during the introduction of the material to be put into the oven. This obviously requires a very precise sequence of successive operations of moving the bells.

Ce genre de dispositif de chargement présente toutefois plusieurs inconvénients qui deviennent d'autant plus graves que leurs dimensions ainsi que la pression du four deviennent plus grandes. En effet, la cloche inférieure, qui est la plus grande et qui fait fonction de distributeur et, généralement d'organe d'étanchéité pour délimiter un sas supérieur, présente, à cause de sa taille, de graves problèmes de fabrication. En outre, les cloches de cette dimension posent des problèmes pour leur manoeuvre et leur remplacement. Cette manoeuvre nécessite non seulement d'importants moyens pour l'équilibrage des pres- sions mais également des moyens de commande suffisamment puissants, ce qui, en général, augmente la hauteur de l'installation.However, this type of loading device has several drawbacks which become all the more serious the larger their dimensions and the pressure of the furnace. Indeed, the lower bell, which is the largest and which functions as a distributor and, generally a sealing member to delimit an upper airlock, presents, because of its size, serious manufacturing problems. In addition, bells of this size pose problems for their operation and their replacement. This maneuver requires not only an important means for balancing the p re- sions but also control means powerful enough, which generally increases the height of the installation.

Un des inconvénients les plus graves est toutefois dû au fait qu'il n'existe pratiquement aucune possibilité d'influencer ou de varier la distribution, c'est-à-dire la forme du dépôt de la matière sur la surface de chargement. En effet, par suite de la forme tronconique de la grande cloche inférieure, on ne pas éviter le creux qui se forme dans la région centrale et, généralement, dans la région périphérique et qui entraîne un profil de chargement suivant une courbe en M bien connuedes spécialistes. Ce genre de chargement ne permet pas d'influencer la marche du haut fourneau par le biais d'une répartition judicieuse de la matière à enfourner. Si l'on se contentait par le passé, à défaut d'une meilleure solution, de ce type de chargement, il n'en est plus de même actuellement lorsque la compétitivité impose une analyse de toutes les solutions pouvant contribuer par un fonctionnement optimal du four à une amélioration du rendement de celui-ci. Or, la répartition ou la distribution judicieuses de la matière sur la surface du lit de fusion est un des critères essentiels pour optimaliser la marche du four.One of the most serious drawbacks is however due to the fact that there is practically no possibility of influencing or varying the distribution, that is to say the form of the deposit of the material on the loading surface. Indeed, due to the frustoconical shape of the large lower bell, one should not avoid the hollow which forms in the central region and, generally, in the peripheral region and which involves a loading profile following a well-known M curve specia lists. This type of loading does not influence the operation of the blast furnace through a judicious distribution of the material to be placed in the oven. If one was satisfied in the past, in the absence of a better solution, of this type of loading, it is not the same any more at present when competitiveness requires an analysis of all the solutions which can contribute by an optimal functioning of the furnace to an improvement in the yield thereof. However, the judicious distribution or distribution of the material on the surface of the melting bed is one of the essential criteria for optimizing the operation of the furnace.

On a bien essayé de perfectionner les dispositifs de chargement à cloches pour atténuer l'influence de ces inconvénients. On a notamment prévu des détecteurs autour de la grande cloche, augmenté le nombre de cloches, changé leur mécanisme de déplacement, etc., mais ces perfectionnements ont, en général, entraîné d'autres inconvénients et c'est ainsi que la plupart de ces perfectionnements n'ont pu être réalisés qu'au détriment de la hauteur totale de l'installation. C'est la raison pour laquelle la plupart des nouveaux hauts fourneaux à grande capacité a été équipée ces dernières années par un nouveau dispositif de chargement à goulotte rotative, maintenant connu sous le nom de "gueulard sans cloches" et proposé, voilà quelques années, par la demanderesse.We have tried to improve the loading devices with bells to mitigate the influence of these drawbacks. In particular, detectors have been provided around the large bell, increased the number of bells, changed their movement mechanism, etc., but these improvements have, in general, led to other drawbacks and that is how most of these improvements could only be made at the expense of the total height of the installation. This is the reason why most of the new high-capacity blast furnaces have been equipped in recent years by a new loading device with a rotary chute, now known as the "gulet without bells" and proposed, a few years ago, by the plaintiff.

Si ce nouveau dispositif de chargement a permis de réduire ou d'éliminer la plupart des inconvénients précités et, par la même occasion, diminue la compétitivité des hauts fourneaux avec un dispositif de chargement conventionnel à cloches, il n'est pas possible de remplacer systématiquement ce dernier par un "gueulard sans cloches" sans considérer tous les critères pouvant entrer en ligne de compte. C'est ainsi que, par exemple, lors de la réfection d'un haut fourneau existant et du remplacement du dispositif de chargement, il pourrait être avantageux d'opter pour un système analogue au précédent afin de devoir effectuer le minimum de transformations en tête du four et de profiter au maximun des équipements auxiliaires existants. De ce point de vue, le dispositif de chargement à cloches possède, pour les hauts fourneaux d'une certaine taille, un avantage d'ordre financier par rapport au "gueulard sans cloches".While this new loading device has made it possible to reduce or eliminate most of the aforementioned drawbacks and, at the same time, reduces the competitiveness of blast furnaces with a conventional loading device with bells, it is not possible to systematically replace the latter by a "shouting without bells" without considering all the criteria that can be taken into account. Thus, for example, when refurbishing an existing blast furnace and replacing the loading device, it could be advantageous to opt for a system similar to the previous one in order to have to carry out the minimum of transformations at the head of the oven and make the most of existing auxiliary equipment. From this point of view, the loading device with bells has, for blast furnaces of a certain size, a financial advantage compared to the "mouth without bells".

Le but de la présente invention est de prévoir un nouveau dispositif de chargement du genre décrit dans le préambule qui permette de réduire sensiblement les inconvénients précités, autrement dit de prévoir un nouveau dispositif de chargement du genre conventionnel qui permet des variations du mode de distribution de la matière à enfourner, notamment en fonction de la nature de celle-ci et des conditions de marche du four, tout en respectant d'autres critères essentiels comme, par exemple, faible hauteur, mécanisme simple, facilité de démontage et d'entretien, etc.The object of the present invention is to provide a new calf loading device of the kind described in the preamble which makes it possible to significantly reduce the aforementioned drawbacks, in other words to provide a new loading device of the conventional type which allows variations in the mode of distribution of the material to be placed in the oven, in particular depending on the nature of this and operating conditions of the oven, while respecting other essential criteria such as, for example, low height, simple mechanism, ease of dismantling and maintenance, etc.

A cet effet, un dispositif du genre décrit dans le préambule est essentiellement caractérisé par un distributeur de matière en forme de jupe tronconique à angle d'ouverture variable, disposée autour de l'axe vertical du dispositif en-dessous de la cloche.To this end, a device of the type described in the preamble is essentially characterized by a material distributor in the form of a frustoconical skirt with variable opening angle, arranged around the vertical axis of the device below the bell.

Selon un mode de réalisation avantageux, la jupe est composée d'un certain nombre de segments chevauchants, ayant chacun la forme d'un secteur d'une surface annulaire, montés par leur côté étroit sur une couronne de pivots et reliés chacun à une tige disposée dans l'axe vertical et reliée à une unité de commande disposée à l'extérieur, pour subir un mouvement coulissant et changer l'angle d'ouverture de la jupe.According to an advantageous embodiment, the skirt is composed of a number of overlapping segments, each having the shape of a sector of an annular surface, mounted by their narrow side on a ring of pivots and each connected to a rod arranged in the vertical axis and connected to a control unit arranged outside, to undergo a sliding movement and change the opening angle of the skirt.

La liaison entre les différents segments et la tige coulissante est avantageusement réalisée par l'intermédiaire d'un plateau en forme d'étoile dont les pointes sont munies d'un ergot pénétrant et coulissant dans une ouverture allongée du segment associé.The connection between the different segments and the sliding rod is advantageously carried out by means of a star-shaped plate whose points are provided with a penetrating lug and sliding in an elongated opening of the associated segment.

Un déflecteur cylindrique disposé entre le distributeur et la petite cloche dévie le courant de la matière de chargement s'écoulant de la trémie sur le distributeur qui, à son tour, dévie le courant suivant une nappe conique sur la surface de chargement. L'ajustement de l'angle d'ouverture de la jupe par un coulissement de la tige, permet de changer l'angle de déversement de cette nappe et, par conséquent, le rayon de la surface annulaire du dépôt de matière. Il est donc possible de changer après chaque cycle de chargement, correspondant à l'écoulement du contenu de la trémie rotative, l'angle de déversement ou bien effectuer des corrections du profil de chargement en fonction des informations fournies par un dispositif de sondage du profil de la surface de chargement.A cylindrical deflector arranged between the distributor and the small bell deflects the current of the loading material flowing from the hopper onto the distributor which, in turn, deflects the current along a conical sheet on the loading surface. Adjusting the opening angle of the skirt by sliding the rod makes it possible to change the angle of discharge of this sheet and, consequently, the radius of the annular surface of the material deposit. It is therefore possible to change after each loading cycle, corresponding to the flow of the contents of the rotary hopper, the dumping angle or else make corrections to the loading profile based on the information provided by a profile probing device. of the loading surface.

Le distributeur selon la présente invention aj en outre, l'avantage de pouvoir être dégagé par le col du haut fourneau à travers le joint associé à la petite cloche et après enlèvement de celui-ci.The dispenser according to the present invention a j in addition, the advantage of being cleared by the collar of the blast furnace through the joint associated with the small bell and after removal thereof.

Le fait qu'il n'y a qu'une seule cloche et que les organes d'entraînement sont montés en bloc dans le prolongement de la tige de commande immédiatement au-dessus de l'enveloppe, permet une construction basse en comparaison aux installations connues.The fact that there is only one bell and that the drive members are mounted as a unit in the extension of the control rod immediately above the casing, allows a low construction in comparison to the installations known.

D'autres avantages et caractéristiques ressortiront de la description détaillée d'un mode de réalisation avantageux proposé ci-dessous, à titre d'exemple non limitatif, en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue schématique, en coupe verticale, d'un dispositif de chargement en position de remplissage de la trémie rotative.
  • La figure 2 est une vue analogue correspondant à la phase initiale en vue de l'opération de déversement de la matière et,
  • Les figures 3 et 4 illustrent le déversement de la matière pour deux positions angulaires extrêmes du distributeur.
Other advantages and characteristics will emerge from the detailed description of an advantageous embodiment proposed below, by way of nonlimiting example, with reference to the appended drawings in which:
  • Figure 1 is a schematic view, in vertical section, of a loading device in the filling position of the rotary hopper.
  • FIG. 2 is a similar view corresponding to the initial phase for the material pouring operation and,
  • Figures 3 and 4 illustrate the discharge of the material for two extreme angular positions of the dispenser.

Se référant d'abord à la figure 1, on voit un dispositif de chargement désigné, dans son ensemble, par la référence 12, monté sur un haut fourneau 10. Ce dispositif de chargement 12 est monté sur une bride 14 faisant partie du col 16 du haut fourneau 10. Une trémie de chargement 18 est montée dans une cage tournante 21 associée à un dispositif de guidage 20,22 permettant un mouvement vertical de la trémie. Un moteur d'entraînement 24 à attaque périphérique et destiné à communiquer à la cage 21 et à la trémie 18 un mouvement rotatif par l'intermédiaire d'un pignon d'attaque 26 et d'un roulement 28. Le système de guidage 20, 22 peut être constitué par deux paires de galets à surface de roulement concave coopérant chacun avec des guides à surface convexe fixés sur la trémie de chargement 18. Celle-ci repose par son propre poids sur un fond conique 30, à conicité tournée vers le haut et servant de cône de protection et d'usure pour une cloche 32. Le fond conique 30 est solidaire d'une gaine axiale 34 composée d'éléments anti-usure entourant une tige creuse 38 de suspension de la petite cloche 32. Cette gaine 34 est suspendue à cette tige creuse 38 au moyen d'un roulement 36.Referring first to Figure 1, we see a loading device designated, as a whole, by the reference 12, mounted on a blast furnace 10. This loading device 12 is mounted on a flange 14 forming part of the neck 16 blast furnace 10. A loading hopper 18 is mounted in a rotating cage 21 associated with a guide device 20, 22 allowing vertical movement of the hopper. A drive motor 24 with peripheral drive and intended to communicate to the cage 21 and the hopper 18 a rotary movement by means of a drive pinion 26 and a bearing 28. The guide system 20, 22 may consist of two pairs of rollers with concave rolling surface each cooperating with guides with convex surface fixed on the loading hopper 18. The latter rests by its own weight on a conical bottom 30, with conicity turned upwards and serving as a protective and wear cone for a bell 32. The conical bottom 30 is integral with an axial sheath 34 composed of anti-wear elements surrounding a hollow rod 38 for suspending the small bell 32. This sheath 34 is suspended from this hollow rod 38 by means of a bearing 36.

L'action du moteur 24 communique un mouvement giratoire à l'ensemble formé par la cage tournante 21, le système de guidage 20, 22, la trémie 18, le fond conique 30;et la gaine 34, alors qu'un mouvement coulissant vertical de la tige creuse 38 permet à la trémie 18 de glisser verticalement par rapport à son système de guidage 20,22.The action of the motor 24 communicates a gyratory movement to the assembly formed by the rotating cage 21, the guide system 20, 22, the hopper 18, the conical bottom 30 ; and the sheath 34, while a vertical sliding movement of the hollow rod 38 allows the hopper 18 to slide vertically relative to its guide system 20,22.

Une enveloppe étanche 40 entoure la trémie rotative 18. Cette enveloppe est fixée d'une façon étanche sur la bride 14 et peut être fermée, du côté du haut fourneau 10, par la cloche 32 lorsque celle-ci se trouve en position relevée appliquée sur un siège 42 fixé sur la base de l'enveloppe 40. L'enveloppe étanche 40 communique à la partie supérieure avec une goulotte de recette 44 de laquelle elle peut être isolée de manière étanche par un clapet d'étanchéité 46. Au-dessus de cette goulotte de recette 44 aboutissent des moyens de transport connus en soi et non représentés, comme par exemple des skips ou une bande transporteuse, pour amener le matériel de chargement.A sealed envelope 40 surrounds the rotary hopper 18. This envelope is tightly fixed on the flange 14 and can be closed, on the blast furnace side 10, by the bell 32 when the latter is in the raised position applied to a seat 42 fixed to the base of the casing 40. The watertight casing 40 communicates at the upper part with a recipe chute 44 from which it can be isolated in a leaktight manner by a sealing valve 46. Above this recipe chute 44 terminates means of transport known per se and not shown, such as for example skips or a conveyor belt, for bringing the loading material.

En-dessous de la cloche 32 est prévu, selon la présente invention, un distributeur conique 48 suspendu à la cloche 32 au moyen d'une pièce circulaire intermédiaire 50 solidaire de la cloche 32. Le distributeur 48 suit par conséquent le mouvement ascendant et descendant de la cloche 32 et lorsque celle-ci est descendue, le distributeur 48 est déplacé vers la position en traits mixtes. Selon l'invention, le distributeur 48 comporte une surface ou jupe tronconique 52 formée par un certain nombre de segments chevauchants 54. Ces segments 54 ont, chacun, la forme d'un secteur d'une surface annulaire, légèrement courbée, de manière à engendrer cette surface conique lorsqu'ils sont montés, les uns à la suite des autres, en recouvrement partiel, autour de l'axe O du four.Below the bell 32 is provided, according to the present invention, a conical distributor 48 suspended from the bell 32 by means of an intermediate circular piece 50 integral with the bell 32. The distributor 48 therefore follows the upward and downward movement of the bell 32 and when the latter is lowered, the distributor 48 is moved to the position in phantom. According to the invention, the distributor 48 has a frustoconical surface or skirt 52 formed by a number of overlapping segments 54. These segments 54 each have the shape of a sector of an annular surface, slightly curved, so as to generate this conical surface when they are mounted, one after the other, in partial overlap, around the axis O of the furnace.

La pièce 50 comporte sur sa face intérieure une couronne de nervures 56 dont le nombre correspond à celui des segments 54. Il n'est toutefois pas nécessaire que toutes ces nervures s'étendent jusqu'à la cloche 32. Chacun des segments 54 est articulé sur la nervure correspondante 56 par l'intermédiaire de pivots 58. Chacun des segments 54 comporte sur sa face concave intérieure un flanc 60, constitué par une plaque soudée ou coulée perpendiculairement sur les segments 54. Ces flancs 60 comportent chacun une fente 62 dans laquelle pénètre un ergot 64 prévu sur une pointe correspondante 68 d'un plateau étoilé 66 dont le nombre de pointes 68 correspond au nombre de segments 54. Le plateau 66 est fixé à l'extrémité inférieure d'une tige de commande 70 co-axiale à la tige creuse 38 et reliée à l'extérieur de l'enveloppe étanche 40 à un mécanisme d'entraînement pour faire monter ou descendre le plateau 66.The part 50 has on its inner face a ring of ribs 56, the number of which corresponds to that of the segments 54. However, it is not necessary for all these ribs to extend to the bell 32. Each of the segments 54 is articulated on the corresponding rib 56 by means of pivots 58. Each of the segments 54 has on its inner concave face a flank 60, constituted by a plate welded or poured perpendicularly on the segments 54. These flanks 60 each have a slot 62 into which penetrates a lug 64 provided on a corresponding point 68 of a star plate 66 whose number of points 68 corresponds to the number of segments 54. The plate 66 is fixed to the lower end of a control rod 70 coaxial with the hollow rod 38 and connected outside the sealed envelope 40 to a drive mechanism for raising or lowering the plate 66.

La position angulaire de chacun des segments 54 par rapport à l'axe O, c'est-à-dire leur basculement autour des pivots 58, est déterminée par la position du plateau 66. Lorsque ce plateau 66 se trouve en position abaissée par rapport à la petite cloche 32, les segments 54 sont écartés et l'angle d'ouverture de la jupe 52 est maximal. Lorsque la tige de commande 70 est remontée par rapport à la petite cloche 32, les segments 54 sont rabattus, en groupe, en direction de l'axe O et l'angle d'ouverture de la jupe 52 diminue progressivement jusque dans la position selon la figure 4. Entre les deux positions extrêmes de la figure 1 et de la figure 4, la jupe 52 passe par une position cylindrique, c'est-à-dire que dans la position extrême selon la figure 4, la conicité de la jupe est contraire à celle de la figure 1.The angular position of each of the segments 54 relative to the axis O, that is to say their tilting around the pivots 58, is determined by the position of the plate 66. When this plate 66 is in the lowered position relative to with the small bell 32, the segments 54 are separated and the opening angle of the skirt 52 is maximum. When the control rod 70 is raised relative to the small bell 32, the segments 54 are folded, in a group, in the direction of the axis O and the opening angle of the skirt 52 gradually decreases until in the position according to Figure 4. Between the two extreme positions of Figure 1 and Figure 4, the skirt 52 passes through a cylindrical position, that is to say that in the extreme position according to Figure 4, the taper of the skirt is opposite to that of figure 1.

Selon un mode de réalisation avantageux, l'angle de pivotement de chacun des segments 54 entre les deux positions extrêmes est de 60°. Cet angle est représenté par α sur la figure 1. Pendant le coulissement du plateau 66, chacun des ergots 64 glisse dans la fente 62 du flanc correspondant 60 afin d'assurer la transition entre le mouvement vertical des ergots 64 et le mouvement pivotant des fentes 62 autour des pivots 58. Lorsque l'angle α est égal à 60°, il est préférable que l'axe des fentes 62 occupe dans les deux positions extrêmes un angle de 30° par rapport à l'horizontale passant par les pivots 58.According to an advantageous embodiment, the pivot angle of each of the segments 54 between the two extreme positions is 60 °. This angle is represented by α in FIG. 1. During the sliding of the plate 66, each of the lugs 64 slides in the slot 62 of the corresponding flank 60 in order to ensure the transition between the vertical movement of the lugs 64 and the pivoting movement of the slots 62 around the pivots 58. When the angle α is equal to 60 °, it is preferable that the axis of the slots 62 occupies in the two extreme positions an angle of 30 ° relative to the horizontal passing through the pivots 58.

Le nombre des segments doit, bien entendu, être un di- visieur de 360. Ce nombre doit, en outre, être assez élevé, c'est-à-dire au moins égal à 16 et, de préférence, égal à 24, ceci pour des raisons d'ordre thermique et géométrique. En effet, il ne faut pas que les segments soient trop grands pour maintenir la dilatation thermique dans des limites acceptables. La raison géométrique est que la largeur des segments sur le côté extérieur opposé aux pivots 58 ne peut pas être trop élevée afin de permettre une fermeture suffisante de la jupe 52.The number of segments must, of course, be a divisor of 360. This number must, moreover, be fairly high, that is to say at least equal to 16 and, preferably, equal to 24, this for thermal and geometric reasons. In fact, the segments must not be too large to keep the thermal expansion within acceptable limits. The geometric reason is that the width of the segments on the outer side opposite the pivots 58 cannot be too high to allow sufficient closing of the skirt 52.

Les segments 54 seront réalisés en acier spécial réfractaire ayant de bonnes propriétés de résistance à l'usure. Ces aciers sont bien connus dans le domaine concerné.The segments 54 will be made of special refractory steel having good wear resistance properties. These steels are well known in the field concerned.

Autour du distributeur 58 est prévu un déflecteur ci- culaire 72. Le bord inférieur de ce déflecteur 72 est convergeant en direction de l'axe O de manière à dévier la matière s'écoulant de la trémie 18 sur la jupe 52 du distributeur 48.A circular deflector 72 is provided around the distributor 58. The lower edge of this deflector 72 converges in the direction of the axis O so as to deflect the material flowing from the hopper 18 onto the skirt 52 of the distributor 48.

Une unité de commande 74 pour actionner la cloche 32 et commander l'angle d'ouverture de la jupe 52 est montée immédiatement au-dessus de l'enveloppe 40. La tige creuse 38 de la cloche 32 traverse l'enveloppe 40 par un presse-étoupe et est reliée au moyen d'un collier démontable 82 à la tige 80 d'un vérin hydraulique 78. La tige de commande 70 du distributeur 48 traverse toute la tige creuse 38 ainsi que le vérin 78 et est actionnée par un second vérin 84 monté au-dessus du vérin 78. Ce second vérin 84 est solidaire du piston du vérin 78, de sorte que le vérin 84 suit le mouvement coulissant vertical de la tige creuse 38.A control unit 74 for actuating the bell 32 and controlling the opening angle of the skirt 52 is mounted immediately above the envelope 40. The hollow rod 38 of the bell 32 passes through the envelope 40 by a press -throat and is connected by means of a removable collar 82 to the rod 80 of a hydraulic cylinder 78. The control rod 70 of the distributor 48 passes through the entire hollow rod 38 as well as the cylinder 78 and is actuated by a second cylinder 84 mounted above the jack 78. This second jack 84 is integral with the piston of the jack 78, so that the jack 84 follows the vertical sliding movement of the hollow rod 38.

Les références 86 et 88 désignent des conduites d'amenée d'un fluide de refroidissement en vue du refroidissement de certaines parties du distributeur 48. La conduite 86 est destinée à alimenter un certain nombre de tubes non montrés, disposés en couronne entre la tige creuse 38 et la tige de commande 70. Ces tubes sont destinés à amener un fluide de refroidissement dans des conduites circulant à travers les nervures 56, les pivots 58, les segments 54 et éventuellement les flancs 60.References 86 and 88 designate supply lines for a cooling fluid for cooling certain parts of the distributor 48. Line 86 is intended to supply a certain number of tubes, not shown, arranged in a ring between the hollow rod. 38 and the control rod 70. These tubes are intended to bring a cooling fluid into conduits circulating through the ribs 56, the pivots 58, the segments 54 and possibly the sides 60.

Une seconde circulation d'un fluide de refroidissement peut être prévue à travers l'intérieur de la tige de commande 70 à partir de la conduite 88 jusque dans les pointes 68 du plateau étoilé 66. Le refroidissement du plateau 66 et des différents segments 54 augmente leur résistance mécanique et réduit par conséquent les risques de déformation.A second circulation of a cooling fluid can be provided through the interior of the control rod 70 from the pipe 88 as far as the points 68 of the star plate 66. The cooling of the plate 66 and of the different segments 54 increases their mechanical resistance and therefore reduces the risk of deformation.

On va décrire maintenant le processus d'introduction et de répartition de la matière pour un cycle de chargement correspondant aux remplissage et vidange de la trémie 18. Pour le remplissage de la trémie de chargement 18, il faut que la cloche inférieure soit appliquée de manière étanche contre son siège 42 afin que le four 10 soit isolé de manière étanche par rapport à l'extérieur. Après l'ouverture du clapet 46, on peut introduire la matière de chargement à travers la goulotte de recette 44. Afin d'assurer un remplissage uniforme de la trémie 18, le moteur 24 communique à celle-ci un mouvement rotatif continu ou intermittent suivant que la matière est amenée dans la goulotte 44 par un transporteur à bandes ou par une installation à skips. Après le remplissage de la trémie 18, on ferme le clapet 46 et on procède à une égalisation de pression en amenant la pression à l'intérieur de l'enveloppe, par des moyens connus en soi, à une pression correspondant approximativement à celle régnant à l'intérieur du four. La phase suivante consiste à actionner le vérin 78 pour abaisser la tige creuse 38 soutenant la cloche 32. Cette descente de la cloche 32 entraîne, par la voie de la gravité, la gaine 34, c'est-à-dire toute la trémie de chargement 18, par glissement dans le système de guidage 20,22. A partir d'un certain moment (voir figure 2), la descente de la trémie 18 est stoppée par une couronne d'amortisseurs incorporés dans la partie inférieure de l'enveloppe 40. Sur les figures, on voit deux de ces amortisseurs 90, 91. Il est à noter que pendant le mouvement descendant de la trémie 18, le moteur 24 est arrêté.We will now describe the process of introducing and distributing the material for a loading cycle corresponding to the filling and emptying of the hopper 18. For filling the loading hopper 18, the lower bell must be applied in a manner waterproof against its seat 42 so that the oven 10 is sealed in relation to the outside. After opening the valve 46, the loading material can be introduced through the acceptance chute 44. In order to ensure uniform filling of the hopper 18, the motor 24 communicates thereto a continuous or intermittent rotary movement according to that the material is brought into the chute 44 by a conveyor belt or by a skip installation. After filling the hopper 18, the valve 46 is closed and a pressure equalization is carried out by bringing the pressure inside the envelope, by means known per se, to a pressure corresponding approximately to that prevailing at inside the oven. The next phase consists in actuating the jack 78 to lower the hollow rod 38 supporting the bell 32. This descent of the bell 32 drives, by gravity, the sheath 34, that is to say the entire hopper of loading 18, by sliding in the guide system 20,22. From a certain moment (see FIG. 2), the descent of the hopper 18 is stopped by a ring of shock absorbers incorporated in the lower part of the casing 40. In the figures, we see two of these shock absorbers 90, 91. It should be noted that during the downward movement of the hopper 18, the motor 24 is stopped.

Dans la position de la figure 2, dans laquelle la trémie 18 est bloquée par les amortisserus 90,91, le fond 92 de cette trémie, en forme d'entonnoir, masque le siège 42 et notamment sa surface d'étanchéité. A partir de la position selon la figure 2, le mouvement de descente est poursuivi par l'ensemble formé par les deux tiges co-axiales 38 et 70, le vérin 84, la cloche 32, le fond conique 30, ainsi que le distributeur 48. Le fond de la trémie 18 est ainsi dégagé progressivement jusque dans la position d'ouverture maximale selon la figure 3 et la charge contenue dans la trémie 18 est libérée pour suivre une trajectoire de chute imposée par le fond conique 30, le déflecteur 72 et la jupe 52.In the position of FIG. 2, in which the hopper 18 is blocked by the dampers 90, 91, the bottom 92 of this hopper, in the form of a funnel, masks the seat 42 and in particular its sealing surface. From the position according to FIG. 2, the downward movement is continued by the assembly formed by the two co-axial rods 38 and 70, the jack 84, the bell 32, the conical bottom 30, as well as the distributor 48 The bottom of the hopper 18 is thus gradually released into the maximum open position according to FIG. 3 and the load contained in the hopper 18 is released to follow a fall path imposed by the conical bottom 30, the deflector 72 and the skirt 52.

Dans la position selon la figure 3 à ouverture maximale de la jupe 52, la matière est déviée suivant un dépôt périphérique sur la surface de chargement. Pour assurer un dépôt dans la région centrale autour de l'axe O, il suffit d'actionner le vérin 84 pour relever le plateau 66 et rabattre la jupe 52 dans la position illustrée sur la figure 4. Dans cette position, la jupe se trouve quasiment hors de la trajectoire de chute imposée par le déflecteur 72. Il est bien entendu possible de distribuer la matière de chargement dans une région intermédiaire entre celle illustrée par les figures 3 et 4, en choisissant un angle d 'ouverture approprié pour la jupe 52.In the position according to FIG. 3 at maximum opening of the skirt 52, the material is deflected according to a peripheral deposit on the loading surface. To ensure a deposit in the central region around the axis O, it suffices to actuate the jack 84 to raise the plate 66 and fold the skirt 52 in the position illustrated in FIG. 4. In this position, the skirt is almost outside the fall path imposed by the deflector 72. It is of course possible to distribute the loading material in an intermediate region between that illustrated in FIGS. 3 and 4, by choosing an appropriate opening angle for the skirt 52.

Selon l'une des particularités de l'invention, le siège 42 est boulonné sur la face supérieure d'une bride inférieure 94 de l'enveloppe 40 dont le diamètre intérieur est supérieur au diamètre maximal extérieur de la cloche 32 et du distributeur 48. Ceci permet de démonter l'ensemble comprenant la cloche 32 et le distributeur 48 par dégagement à travers la bride 94 après avoir démonté le siège 42 et le fond 92 de la trémie 18 et amené le distributeur 48 dans la position illustrée sur la figure 4.According to one of the features of the invention, the seat 42 is bolted to the upper face of a lower flange 94 of the casing 40 whose internal diameter is greater than the maximum external diameter of the bell 32 and of the distributor 48. This makes it possible to dismantle the assembly comprising the bell 32 and the distributor 48 by release through the flange 94 after having dismantled the seat 42 and the bottom 92 of the hopper 18 and brought the distributor 48 to the position illustrated in FIG. 4.

Le fait que l'unité de commande 74 est montée directement sur l'enveloppe 40 permet une construction extrêmement basse et rend superflue la tour des cloches habituelle. Un second facteur intervenant favorablement pour une construction basse est le fait que dans le dispositif de chargement proposé, il n'y ait plus qu'une seule cloche et que le distributeur 48 peut être rapproché de cette cloche 32, vu qu'il n'y a plus de stockage entre cette cloche 32 et le distributeur 48.The fact that the control unit 74 is mounted directly on the casing 40 allows an extremely low construction and makes the usual bell tower superfluous. A second factor which comes into play favorably for a low construction is the fact that in the proposed loading device, there is only one bell left and that the distributor 48 can be brought closer to this bell 32, since it does not there is more storage between this bell 32 and the distributor 48.

Claims (9)

1. - Dispositif de chargement d'un four à cuve, comprenant une trémie de chargement (18) rotative à fond mobile (30), une enveloppe étanche (40) autour de cette trémie (18), la par- tieu supérieure de cette enveloppe (40) étant pourvue d'aumoins un orifice d'introduction de matière et équipée d'un clapet d'étanchéité (46) tandis que le fond de l'enveloppe (40) coopère avec une cloche (32) pouvant coulisser suivant l'axe longitudinal (0) du four et du dispositif, caractérisé par un distributeur de matière (48) en forme de jupe tronconique (52) à angle d'ouverture variable disposé autour de l'axe vertical du dispositif en-dessous de la cloche (32).1. - Device for loading a shaft furnace, comprising a rotary loading hopper (18) with movable bottom (30), a sealed envelope (40) around this hopper (18), the upper part of this envelope (40) being provided at least with a material introduction orifice and equipped with a sealing valve (46) while the bottom of the envelope (40) cooperates with a bell (32) which can slide along the longitudinal axis (0) of the oven and of the device, characterized by a material distributor (48) in the form of a frustoconical skirt (52) with variable opening angle arranged around the vertical axis of the device below the bell (32). 2. - Dispositif selon la revendication 1, caractérisé en ce que la jupe (52) est composée d'un certain nombre de segments chevauchants (54) ayant chacun la forme d'un secteur d'une surface annulaire, montés par leur côté étroit sur une couronne de pivots (58) et reliés chacun à une tige de commande (70) montée sur l'axe vertical et reliée à une unité de commande (74) disposée à l'extérieur, pour subir un mouvement coulissant vertical afin de faire pivoter, en groupe, tous les segments (54) et changer l'angle d'ouverture de la jupe (52).2. - Device according to claim 1, characterized in that the skirt (52) is composed of a number of overlapping segments (54) each having the shape of a sector of an annular surface, mounted by their narrow side on a ring of pivots (58) and each connected to a control rod (70) mounted on the vertical axis and connected to a control unit (74) disposed outside, to undergo a vertical sliding movement in order to make pivot, as a group, all the segments (54) and change the opening angle of the skirt (52). 3. - Dispositif selon la revendication 2, caractérisé en ce que la liaison entre les différents segments (54) et la tige coulissante (70) est réalisée par l'intermédiaire d'un plateau (66) en forme d'étoile dont les pointes (68) sont ru- nies d'un ergot (64) pénétrant et coulissant dans une ouverture (62) allongée du segment associé (54).3. - Device according to claim 2, characterized in that the connection between the different segments (54) and the sliding rod (70) is produced by means of a plate (66) in the shape of a star whose points (68) are provided with a lug (64) penetrating and sliding in an opening (62) elongated from the associated segment (54). 4. - Dispositif selon l'une des revendications 2 on 3, caractérisé en ce que les pivots (58) sont montés sur les nervures (56) solidaires de la cloche inférieure (32).4. - Device according to one of claims 2 to 3, characterized in that the pivots (58) are mounted on the ribs (56) integral with the lower bell (32). 5. - Dispositif selon l'une des revendications 2 à 4 caractérisé en ce que le nombre de segments (54) est au moins égal à 16.5. - Device according to one of claims 2 to 4 characterized in that the number of segments (54) is at least equal to 16. 6. - Dispositif selon la revendication 5, caractérisé en ce que le nombre de segments (54) est égal à 24.6. - Device according to claim 5, characterized in that the number of segments (54) is equal to 24. 7. - Dispositif selon l'une des revendications 1 à 6, caractérisé par un déflecteur cylindrique (72) avec un bord inférieur convergent et fixé autour de la partie supérieure du distributeur (48).7. - Device according to one of claims 1 to 6, characterized by a cylindrical deflector (72) with an edge lower converging and fixed around the upper part of the distributor (48). 8. - Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'unité de commande (74) est montée immédiatement au-dessus de l'enveloppe (40) et comprend un premier vérin (78) dont le piston est relié d'une part, à une tige creuse (38) de suspension de la cloche (32) et, d'autre part, à un second vérin (84) dont le piston actionne la tige de commande (70) du distributeur (48), cette tige de commande (70) traversant le premier vérin (78) et la tige creuse (38) de suspension de la cloche (32).8. - Device according to one of claims 1 to 6, characterized in that the control unit (74) is mounted immediately above the envelope (40) and comprises a first cylinder (78) including the piston is connected on the one hand, to a hollow rod (38) for suspending the bell (32) and, on the other hand, to a second cylinder (84) whose piston actuates the control rod (70) of the distributor ( 48), this control rod (70) passing through the first cylinder (78) and the hollow rod (38) for suspending the bell (32). 9. - Dispositif selon l'une des revendications 1 à 8, caractérisé par un système de refroidissement comprenant une première alimentation (86) à travers une couronne de tuyaux disposés entre la tige creuse (38) et la tige de commande (70) et desservant chacun les segments et une seconde alimentation (88) reliée au plateau (66) en forme d'étoile par deux conduites traversant co-axialement la tige de commande (70).9. - Device according to one of claims 1 to 8, characterized by a cooling system comprising a first supply (86) through a ring of pipes arranged between the hollow rod (38) and the control rod (70) and each serving the segments and a second supply (88) connected to the plate (66) in the shape of a star by two pipes passing coaxially through the control rod (70).
EP79104836A 1978-12-12 1979-12-03 Charging apparatus for a shaft furnace Expired EP0012310B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79104836T ATE4601T1 (en) 1978-12-12 1979-12-03 LOADING DEVICE FOR A SHAFT FURNACE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU80646 1978-12-12
LU80646A LU80646A1 (en) 1978-12-12 1978-12-12 CHARGING DEVICE FOR A TANK OVEN

Publications (2)

Publication Number Publication Date
EP0012310A1 true EP0012310A1 (en) 1980-06-25
EP0012310B1 EP0012310B1 (en) 1983-09-07

Family

ID=19729070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104836A Expired EP0012310B1 (en) 1978-12-12 1979-12-03 Charging apparatus for a shaft furnace

Country Status (10)

Country Link
US (1) US4307987A (en)
EP (1) EP0012310B1 (en)
JP (1) JPS5582706A (en)
AT (1) ATE4601T1 (en)
CA (1) CA1146750A (en)
DE (1) DE2966145D1 (en)
ES (1) ES486746A1 (en)
LU (1) LU80646A1 (en)
MX (1) MX150657A (en)
SU (1) SU963474A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088253A1 (en) * 1982-03-10 1983-09-14 Paul Wurth S.A. Installation for charging a shaft furnace
RU2618304C1 (en) * 2015-11-27 2017-05-03 Петр Иванович Щербаков Device for maneuvering a domain oven cone

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125410C2 (en) * 1981-06-27 1983-04-28 Beckenbach, Ulrich, Dipl.-Ing., 4005 Meerbusch Device for loading a shaft furnace
LU85811A1 (en) * 1985-03-15 1986-10-06 Wurth Paul Sa LOADING SYSTEM FOR A TANK OVEN
DE3632724A1 (en) * 1986-09-26 1988-04-07 Gutehoffnungshuette Man DOUBLE-LOCK GAUGE CLOSURE FOR SHAFT OVENS, IN PARTICULAR BLOCKS
DE4445845C2 (en) * 1994-12-22 1996-10-31 Gutehoffnungshuette Man Dispensing system for shaft furnaces, especially blast furnaces
US6991415B1 (en) * 2001-09-07 2006-01-31 Anschultz Jackie R Gravity grain diverter
RU2279484C1 (en) * 2005-02-07 2006-07-10 Общество С Ограниченной Ответственностью "Исследовательско-Технологический Центр "Аусферр" Ingredient feeding apparatus for direct alloying of steel
US8776844B1 (en) * 2011-02-03 2014-07-15 Carl F. Yaegel Flow diverter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE611801C (en) * 1935-04-06 E H Julius Stoecker Dr Ing Gout seal for shaft ovens, especially blast furnaces
US2560844A (en) * 1948-07-16 1951-07-17 Cie Forges Et Acieries Marine Distributing device for the charge of shaft furnaces
US2586298A (en) * 1947-07-25 1952-02-19 Cie Forges Et Acieries Marine Distributing device for the charge of shaft furnaces
FR1266894A (en) * 1960-09-06 1961-07-17 Charging installation for blast furnace or similar
BE721977A (en) * 1968-10-07 1969-03-14
DE1956261A1 (en) * 1969-11-08 1971-05-19 Demag Ag Charge distribution aid for shaft furnaces
DE2029089B2 (en) * 1969-08-22 1971-10-14 Ste Industrielle Delattre-Levivier, S.I.D.L., Paris DEVICE FOR FILLING AND DISTRIBUTING BATCHES FOR A CHAMBER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US796784A (en) * 1904-08-15 1905-08-08 John Gilman Witherbee Charging apparatus.
JPS5825724B2 (en) * 1973-11-01 1983-05-30 ア−サ− ジ− マツキ− アンド カンパニ− It's a long time since I've been in the middle of a long time since I've been in the middle of a long time since I've been in the middle of a long time.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE611801C (en) * 1935-04-06 E H Julius Stoecker Dr Ing Gout seal for shaft ovens, especially blast furnaces
US2586298A (en) * 1947-07-25 1952-02-19 Cie Forges Et Acieries Marine Distributing device for the charge of shaft furnaces
US2560844A (en) * 1948-07-16 1951-07-17 Cie Forges Et Acieries Marine Distributing device for the charge of shaft furnaces
FR1266894A (en) * 1960-09-06 1961-07-17 Charging installation for blast furnace or similar
BE721977A (en) * 1968-10-07 1969-03-14
DE2029089B2 (en) * 1969-08-22 1971-10-14 Ste Industrielle Delattre-Levivier, S.I.D.L., Paris DEVICE FOR FILLING AND DISTRIBUTING BATCHES FOR A CHAMBER
DE1956261A1 (en) * 1969-11-08 1971-05-19 Demag Ag Charge distribution aid for shaft furnaces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088253A1 (en) * 1982-03-10 1983-09-14 Paul Wurth S.A. Installation for charging a shaft furnace
US4512702A (en) * 1982-03-10 1985-04-23 Paul Wurth S.A. Installation for feeding a shaft furnace
RU2618304C1 (en) * 2015-11-27 2017-05-03 Петр Иванович Щербаков Device for maneuvering a domain oven cone

Also Published As

Publication number Publication date
SU963474A3 (en) 1982-09-30
LU80646A1 (en) 1979-04-13
ES486746A1 (en) 1980-06-16
EP0012310B1 (en) 1983-09-07
DE2966145D1 (en) 1983-10-13
JPS5582706A (en) 1980-06-21
CA1146750A (en) 1983-05-24
ATE4601T1 (en) 1983-09-15
JPS6328961B2 (en) 1988-06-10
MX150657A (en) 1984-06-15
US4307987A (en) 1981-12-29

Similar Documents

Publication Publication Date Title
EP0062770B1 (en) Shaft furnace charging apparatus
BE1004404A3 (en) Loading installation of four a tank.
EP0196486B1 (en) Charging apparatus for a shaft furnace
EP0012310B1 (en) Charging apparatus for a shaft furnace
FR2695464A1 (en) Closed induction furnace for melting and casting.
EP0088253B1 (en) Installation for charging a shaft furnace
EP0200996B1 (en) Method for controlling the charging installation of a shaft furnace and charging installation using this method
CA2819809C (en) Device for filling a container with solid particles comprising a diaphragm
EP1129221B1 (en) Device for dispensing bulk materials
EP0730666B1 (en) Device for loading a shaft furnace
LU87379A1 (en) LOADING SYSTEM FOR A TANK OVEN
WO1992010594A1 (en) Facility for producing molten metal in an electric furnace
EP0592276B1 (en) Discharging device and storage area provided with such a device
FR2503108A1 (en) TRANSPORTING APPARATUS WITH RACLETTES
FR2593088A1 (en) Hot-spraying robot for furnace linings
FR2759686A1 (en) DEVICE FOR LOADING ARTICLES IN A CONTAINER
BE1003485A4 (en) Installation for the treatment of granular products, such as malting
FR2476114A1 (en) Coke oven charging trolley - which carries mechanically driven scrapers removing carbonaceous deposits from oven charging holes and their lids
FR2670216A1 (en) Plant for the production of steel in an electrical furnace
FR2660423A1 (en) METHOD AND INSTALLATION FOR DRYING AND DEGASSING POWDERS
EP0219365A1 (en) Reclaiming scraper conveyor for a circular storage pile
BE527866A (en)
EP0477117B1 (en) Modular flexible thermic treatment device
FR2476115A1 (en) Coke oven charging trolley - which carries mechanically driven scrapers removing carbonaceous deposits from lids of oven charging holes
FR2637885A1 (en) Machine for filling containers, such as bottles, by means of gravity

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT NL

ITCL It: translation for ep claims filed

Representative=s name: BARZANO' E ZANARDO MILANO S.P.A.

TCAT At: translation of patent claims filed
DET De: translation of patent claims
17P Request for examination filed

Effective date: 19801117

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT NL

REF Corresponds to:

Ref document number: 4601

Country of ref document: AT

Date of ref document: 19830915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 2966145

Country of ref document: DE

Date of ref document: 19831013

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19841120

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19841211

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19841231

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19861120

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19871231

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881203

Ref country code: AT

Effective date: 19881203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19881231

BERE Be: lapsed

Owner name: PAUL WURTH S.A.

Effective date: 19881231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19890701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST