EP0456641B1 - Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee - Google Patents

Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee Download PDF

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Publication number
EP0456641B1
EP0456641B1 EP90900762A EP90900762A EP0456641B1 EP 0456641 B1 EP0456641 B1 EP 0456641B1 EP 90900762 A EP90900762 A EP 90900762A EP 90900762 A EP90900762 A EP 90900762A EP 0456641 B1 EP0456641 B1 EP 0456641B1
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EP
European Patent Office
Prior art keywords
runner
cover
liquid metal
inert gas
transporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90900762A
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German (de)
English (en)
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EP0456641A1 (fr
Inventor
Hans De Haas
Klaus Ulrich
Klaus GRÜTZMACHER
Erhard Krause
Horstmar Mohnkern
Manfred LÖWENSTEIN
Manfred Voss
Joachim Witt
Uwe Hammer
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Kloeckner Stahl GmbH
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Kloeckner Stahl GmbH
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Priority claimed from DE3903444A external-priority patent/DE3903444C1/de
Priority claimed from DE3929328A external-priority patent/DE3929328A1/de
Priority claimed from DE3930729A external-priority patent/DE3930729A1/de
Priority claimed from DE19893933894 external-priority patent/DE3933894A1/de
Application filed by Kloeckner Stahl GmbH filed Critical Kloeckner Stahl GmbH
Priority to AT90900762T priority Critical patent/ATE89865T1/de
Publication of EP0456641A1 publication Critical patent/EP0456641A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D45/00—Equipment for casting, not otherwise provided for
    • B22D45/005—Evacuation of fumes, dust or waste gases during manipulations in the foundry
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron

Definitions

  • the invention relates to a method for avoiding the generation of flue gases in metallurgical processes and in the transport of liquid metal from a metallurgical vessel, in particular a metallurgical furnace such as a blast furnace, into casting vessels.
  • the invention further relates to a device which consists of at least one transport and drainage channel installed at a tap opening of a metallurgical furnace and a transfer station with a swivel or tilting channel in which the liquid metal runs from the drainage channel via a distribution system into outlet openings from which it flows there is a preferably mobile pouring vessel.
  • the smoke gas is generated from the outset in every process step or prevented in any device in which or in which the presence of oxygen is not absolutely necessary.
  • metal oxides eg "brown smoke”
  • SO2 further undesirable oxides
  • liquid metal also includes the slag which often occurs in metallurgical processes and which can occur in batches or in separate layers together with the liquid metal.
  • the first measure is to cover the channels located directly at the tap openings of the metallurgical furnace, in particular the blast furnace, with hoods, for example, into which an inert gas is introduced. This initially largely prevents air access to the liquid metal, and furthermore, by minimizing the interior space above the flowing liquid metal, the theoretically possible reaction space of the metal with the gas above it and thus the possible scope of the reaction is considerably reduced.
  • the covers must be movable in the area of the tap opening, i.e. be swiveled or folded away from the gutter.
  • the inerting gas can be introduced in such a way that it can simultaneously serve for cooling areas which are subject to high thermal stress.
  • the shielding of the liquid metal flow in the transport channels is solved in that the channels are covered by hoods, the introduction of inert gas serving to simultaneously cool the hoods.
  • Another problem point is the transfer point of the liquid metal from the transport trough into the inlet opening of the pouring vessel.
  • the metal coming from the transport trough first encounters a swivel or tilting trough in free fall, preferably via a distribution trough and an outlet opening and via this into the Drainage vessel, e.g. a torpedo pan or a transport vessel.
  • the transfer point is largely gas-tightly shielded from the outside by a housing, the interior in question can thus be effectively rendered inert with inert gas, in particular nitrogen.
  • the enclosure of the transfer point considerably minimizes the space that has to be purged with inert gas.
  • the otherwise economically unjustifiable pressure nitrogen or inert gas injection is limited to a small area, namely that from the end of the transport trough to the outlet opening into the pouring vessel, for example a pan or a torpedo car.
  • the transfer station is equipped with a preferably movable cover.
  • the swivel or tilting channel is cooled during the liquid metal flow through the same inert gas with which the inerting in the interior formed by the shield is also ensured.
  • the inert gas is preferably blown below the shield against the wall of the swivel or tilting channel.
  • the overpressure above the liquid metal flow in the drainage channels, in the transfer space and in the interior of the pouring vessel should be kept as small as possible.
  • the liquid metal discharge jet is shielded from the air inlet by an inert gas jacket after it emerges from the outlet opening until it enters the pouring vessel.
  • This inert gas jacket is created by a preferably annular injection of inert gas under pressure, preferably 1.5 bar, so that an inert gas curtain enveloping the liquid jet results.
  • inert gas curtain enveloping the liquid jet results.
  • mostly "bearish" deposits at the inlet openings of the pouring vessels are a hindrance, making gas-tight placement of the tube on such an inlet opening impossible.
  • inert gas curtain instead of the enveloping inert gas curtain, only metallic chains, strips or the like are available, which, however, are disadvantageously displaceable relative to one another and there, in particular due to the thermals prevailing during casting, provide an airtight seal complicate.
  • inert gas also serves as a cooling medium for the outlet opening.
  • the interior of the pouring vessel is largely kept under inert gas by introducing inert gas, preferably through inlet openings in the vessel jacket, in order to prevent metal oxidation there as well.
  • inert gas emerging from the pouring vessel filling opening for the liquid metal supports the described shielding effect of the ring-shaped inert gas curtain for the liquid metal jet.
  • the inerting of the pouring vessel should preferably begin before the first inlet of liquid metal.
  • either nitrogen or a gas whose free oxygen content is consumed by combustion in a combustion chamber can be used as the inert gas.
  • the resulting inert exhaust gas which e.g. can be achieved by burning natural gas, is cooled before being introduced into the rooms mentioned.
  • the above-described transfer point of the liquid metal from the transport trough still has a relatively large-volume housing, in which a tilting or swiveling trough is arranged.
  • a tipping trough is a trough arrangement in which the pig iron coming from a trough is directed into various pouring vessels via a trough that can be tilted about a horizontal axis.
  • a swivel channel is a channel arrangement in which the pig iron coming from a drain channel is directed onto a channel that can be swiveled or rotated about a vertical axis, from which it is fed directly into the pouring vessels or via a distribution system from several individual channels located underneath.
  • the tilting or swiveling trough is covered over its respective channel part lengths to form the smallest possible free interior space, ie, the liquid metal does not flow through, wherein the tipping or swivel trough has funnel-shaped outlet openings at the end of which annular pressure gas nozzles or pressure gas nozzle rings are arranged.
  • the channel area of the tipping or swivel channel is covered as well as the transport or drainage channels.
  • the end-side funnel-shaped configurations of the tilting or swiveling channels serve to fasten the annular compressed gas nozzles or the compressed gas nozzle rings to form an inert gas jacket around the liquid metal jet running there. Further holders for the ring-shaped nozzle or the nozzle ring can thus preferably be dispensed with.
  • the outlet funnel is arranged at the angle of inclination or tipping of the tipping or swiveling channel, with which the inert gas jacket diameter can be minimized.
  • the arrangement is such that the annular pressure nozzle plane or the plane determined by the pressure nozzle ring lies essentially horizontally in the pouring position.
  • the lid or lids together with the tilting or swiveling channel form a closed, largely gas-tight housing through which liquid metal can flow.
  • This interior is filled with a suitable gas such as Nitrogen inerted.
  • the lid can be detached from the tilting or swiveling channel, in particular for cleaning or repair work, preferably the lid can be swiveled, for example attached to the tipping or swivel trough via a hinge.
  • the transfer point of the liquid metal from the transport trough into the inlet opening is in a pit, the following solution is particularly suitable for retrofitting relevant gas orders.
  • the housing of the transfer station consisting of a stationary lower part and the cover is to be provided with a displaceable upper part which prevents major dismantling work helps. This avoids relatively long downtimes, which are at the expense of the productivity of the entire device.
  • the upper part of the housing preferably consists of a frame with at least three wheels and a cover.
  • the movability of the upper part on wheels saves the otherwise necessary use of appropriately resilient lifting equipment and considerably minimizes the required use of cranes.
  • the stationary lower part of the housing is arranged as a boundary of a pit, and has side rails for two of the wheels of the frame of the upper part.
  • the swiveling or tipping channel and the transfer funnel are located in this pit. Due to the movability of the upper part, ie the frame and the cover, it is no longer necessary to have the stationary lower part on one of the end faces for inspection work Swing doors or similar closable openings. The inspection can take place after opening, ie moving the lid over the boundary of the stationary lower part.
  • the frame is preferably mounted so that it can be moved horizontally on three wheels, two wheels running on the rails arranged on the side of the pit, the third wheel running on a rail parallel to and offset from the laterally arranged rails leads to one end of the pit.
  • This saves a rail track about the length of the pit.
  • the frame including the cover is moved in a corresponding manner over the face of the pit. The space required to the side of the pit and the length of the third track are to be selected according to the length of the frame or the pit.
  • the lid is preferably roof-shaped, i.e. in cross-section essentially triangular, and detachable from the frame.
  • the cover is preferably provided with a sealing strip which closes the gap between the cover and the lower housing part. This significantly increases the tightness of the closed housing.
  • swivel-lifting devices After installation of the transport and drainage channels, swivel-lifting devices are required, which make it possible to pick up the cover hoods weighing about 12 t from a sand bed and without damaging the blast furnace scaffold, i.e. to be placed on the transport and drainage channels under safe guidance.
  • a swivel-lifting device is proposed, which has a vertical column, which is arranged to the side of the tap opening and can be rotated about its longitudinal axis, with a cantilever arm, at the free end of which the lifting device with a holding device for cover hoods is arranged.
  • the receiving device for the cover hoods is preferably designed to be rotatable about a vertical axis relative to the lifting device. This can be done in particular in that the receiving device is connected to the lifting device by means of a rotary ball connection and is driven by a gear rack toothing.
  • the receiving device preferably has fastening elements which allow the cover hoods to be set down and received on or from uneven ground, in particular a sand bed, without torque.
  • Shackles for example, are suitable as fastening elements for this.
  • the lifting device should have a torque-stable guide for absorbing unilateral moments with uneven loading, so that "tilting" of the cover hoods can be avoided, for example, if they have bearded deposits on one side.
  • the lifting device can be raised and lowered via a cable pull, preferably a bottle cable pull, wherein the cable guide is preferably elastically mounted at the attachment point (fixed point) via a plate spring arrangement.
  • the rotational mobility of the vertical column is also brought about by a rack drive.
  • Copying units are preferably used to monitor the current movement sequences or positions of the vertical column and / or the lifting device.
  • the lifting device is permanently connected to the relevant cover for the gutter at the tap hole, it is also advisable to attach an inert gas pipe with pipe swivel joints to the lifting device, preferably the free end of the pipe being part of a fast Detachable coupling for coupling to the hood equipped with the corresponding part. If the covers are to be cooled, it is advisable to provide a pipeline for the coolant supply in a corresponding manner.
  • the blast furnace 10 shown in Fig. 1 has three tap holes 11, 12 and 13, of which drain channels 14, 15 and 16 lead to respective transfer stations 17, 18 and 19, below which each movable pouring vessels 20 and 21 (Fig. 2) for receiving liquid metal are arranged.
  • An essential feature of the device according to the invention in the tapping area are the cover hoods 22, 23 and 24 to which inert gas can be applied, which in the area of the respective tapping hole 11 to 13 with the aid of the Swivel devices 25, 26 and 27 are arranged pivotably.
  • the pig iron is guided to the relevant transfer stations 17, 18 and 19 in the respectively covered and inertized drainage channels 14, 15 and 16.
  • the liquid metal preferably runs from the drainage channels to swivel channels 28, 29 and 30, which are furthermore preferably cooled laterally by the flow of the inerting gas.
  • the liquid metal is preferably conducted via distributor channels 31 and 32 (FIG. 2) to the respective outlet openings 33 and 34.
  • the entire transfer stations are encased in housings 35 and 36; the lid structure 36, which will be discussed later, can be moved horizontally.
  • the liquid metal jet 37 emerges below the casting platform from the outlet opening 33, which is surrounded by the annular nozzle 38. This envelops the liquid metal jet with the inert gas curtain 39 until it enters the upper opening 40 of the pouring vessels 20 or 21.
  • the interior of the pouring vessel is subjected to inert gas before and during the filling through preferably one or more inlet openings 41 or 42 located in the vessel jacket.
  • All gas nozzles are connected to gas supply systems 43, 44, 45 and are supplied with nitrogen via pressure valves 46, 47 and 48.
  • the inventive principle can also be used in so-called tilting gutters, in which it is necessary to preferably house or cover the tilting gutter, which will be discussed later, and to keep the interior of the housing under a largely inert atmosphere with a slight excess pressure.
  • the inventive principle can also be used in slag transport channels.
  • the swivel channel 29 and the distribution channels 31 and 32 are located within a pit 52 which is delimited on both sides by rails 53 and 54.
  • a third rail 55 is arranged parallel to the above-mentioned rails 53 and 54 from the end face 52 'of the pit.
  • the upper part consisting of a frame 35 and a cover 36 is movably supported on the above-mentioned rails 53 to 55 via wheels 49 to 51.
  • the rail 55 is embedded in the casting hall 56.
  • the rails 53 and 54 are arranged on the lower part of the housing of the pit 52.
  • the cover 36 is also provided with a sealing strip 57 which closes the gap 58 between the cover 36 and the stationary lower part 59.
  • a tilting channel 60 shown in FIGS. 4 and 5 the aforementioned housing can be dispensed with.
  • the tipping channel 60 has outlet funnels 61 and 62 at the end, on the end face of which a compressed gas nozzle ring 63, 64 is arranged.
  • the outlet channel 65 with the channel longitudinal axis 655 is also arranged at the same angle ⁇ with respect to the vertical trough. This means that the compressed gas nozzle ring 63 or 64 is horizontal in the outlet position (see FIG. 4, left side).
  • the tipping channel 60 is covered by one or more covers 67 to form the smallest possible interior 68.
  • the covers 67 are detachably, preferably pivotally attached to the tipping channel 60.
  • One or more inert gas nozzles 69 are provided on the underside of the lid for inerting the interior 68 above the liquid metal level in the tilting channel, which is not shown.
  • the inert gas nozzles 69 like the compressed gas supply 66, can be supplied by a central control.
  • the swivel-lifting device shown in FIGS. 6 and 7 essentially consists of a vertically arranged column 80 which can be rotated about its longitudinal axis 81.
  • This column is located on the side of the tap opening of a blast furnace, not shown.
  • This column has a cantilever arm 82, at the free end 82a of which a lifting device 73 is arranged, which in the present case consists of a block and tackle.
  • the lifting device serves for lifting and lowering a receiving device 74 for a cover 75.
  • This receiving device 74 is connected to the lifting device 73 via a ball-and-socket connection 74a and is driven via a gear rack toothing.
  • the lifting device 73 is torque-stable, so that even in the event that the cover has bearish extensions on its side, which considerably increase its weight there, there is no tilting of the cover hood.
  • the cover hood can be brought into any angular position in a horizontal plane (rotation about the vertical axis 76) via the ball pivot connection 74a and the drive train drive.
  • a further possibility of rotation about the longitudinal axis 81 of the column is by means of the drive shaft drive 78 for the vertical column 80. Since a pivoting-lifting device is provided for each tap hole, it is finally advisable to include the inert gas / coolant line as a combined pipeline 79 to connect the device.
  • This pipe 79 has pipe swivel joints 79a.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Blast Furnaces (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (37)

  1. Procédé pour empêcher la formation de fumées lors de processus métallurgiques et du transport du métal liquide d'un récipient métallurgique, notamment d'un four métallurgique tel qu'un haut fourneau, dans des récipients de coulée, selon lequel
    a) à l'exception de l'étape de traitement pour laquelle la présence d'oxygène est réglée à dessein pour des raisons techniques de traitement, les récipients métallurgiques et/ou dispositifs de transport utilisés pour la percée et le transport, notamment les chenaux d'évacuation transportant le métal liquide à partir du trou de percée du four métallurgique, sont recouverts en formant un espace intérieur libre, c'est-à-dire non rempli et/ou non traversé par le métal liquide, du plus petit volume possible,
    b) le point de transfert, où le métal liquide est transféré d'un récipient ou d'un dispositif de transport dans le récipient suivant ou dans un dispositif de transport suivant, notamment le point de transfert du métal liquide du chenal de transport ou d'évacuation dans un récipient de coulée, est protégé par une carcasse largement étanche aux gaz,
    c) tant l'espace intérieur libre des chenaux d'évacuation recouverts que l'espace intérieur protégé par une carcasse largement étanche aux gaz du point de transfert, ainsi que l'espace intérieur du récipient de coulée, sont rincés avec un gaz inerte, et
    d) le jet d'évacuation de métal liquide, depuis le trou de sortie jusque dans le récipient récepteur (récipient de coulée), est en outre protégé par une enveloppe de gaz inerte sous pression, de section sensiblement annulaire, qui empêche la pénétration d'air.
  2. Procédé selon la revendication 1, caractérisé en ce que le moyen de recouvrement des récipients métallurgiques et/ou des dispositifs de transport, et/ou la carcasse de protection du chenal de transport et d'évacuation et/ou du chenal pivotant ou basculant au point de transfert, est ou sont refroidis pendant le passage du métal liquide.
  3. Procédé selon la revendication 2, caractérisé en ce qu'on utilise le gaz inerte comme agent de refroidissement.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'enveloppe annulaire de gaz inerte est produite par une insufflation de préférence annulaire de gaz inerte sous une pression égale de préférence à 1,5 bars.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'on utilise comme gaz inerte de l'azote, ou un gaz dont la teneur libre en oxygène a été épuisée par combustion dans une chambre de combustion et qui a ensuite été refroidi.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la pression du gaz inerte dans les récipients métallurgiques et/ou dans les dispositifs de transport, notamment sur le chenal de transport et d'évacuation, au point de transfert et à l'intérieur du récipient de coulée, est de préférence réglée à une valeur supérieure de 10 à 100 Pa à la pression extérieure.
  7. Dispositif pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 6, constitué d'au moins un chenal de transport et d'évacuation installé sous un trou de percée du four métallurgique, et d'un poste de transfert doté d'un chenal pivotant ou basculant dans lequel le métal liquide s'écoule, par l'intermédiaire d'un système distributeur, du chenal d'évacuation dans des ouvertures de sortie par lesquelles il s'écoule dans un récipient de coulée de préférence mobile, dans lequel
    a) chaque récipient utilisé pour la percée ou le transport, et/ou chaque chenal de transport et d'évacuation (14-16), possède sur toute sa longueur un ou plusieurs capots de recouvrement (22-24) qui forment un espace intérieur libre, c'est-à-dire non traversé par le métal liquide, le plus petit possible,
    b) les postes de transfert (17-19), y compris les ouvertures de sorties (33, 34), sont protégés par une carcasse largement étanche aux gaz,
    c) une buse annulaire ou une couronne de buses de gaz sous pression (38) est disposée au-dessus du jet de métal liquide (37) qui s'écoule de l'ouverture de sortie (33, 34) à l'ouverture d'entrée du récipient de coulée (40), et elle insuffle un gaz inerte qui forme une enveloppe annulaire verticale de gaz inerte (39) autour du jet de métal liquide (37), et
    d) des buses de gaz sont prévues dans le récipient métallurgique, dans les capots de recouvrement (22-24), dans les carcasses des postes de transfert (35, 36) et dans les récipients de coulée (20, 21).
  8. Dispositif selon la revendication 7, caractérisé en ce que les buses de gaz pour chaque système de transport de métal liquide associé à un trou de percée sont reliées à des systèmes d'alimentation en gaz (43-45), et en ce que leur débit de gaz inerte peut être réglé par des soupapes de contrôle de pression (46-48).
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que les capots de recouvrement (22-24) peuvent être pivotés à l'écart des chenaux de transport et d'évacuation (14-16).
  10. Dispositif selon la revendication 7 ou 8, caractérisé en ce que les postes de transfert (17-19) présentent des couvercles mobiles (36), de préférence mobiles en translation.
  11. Dispositif selon l'une quelconque des revendications 7 à 10, caractérisé en ce que les postes de transfert (17-19), y compris les ouvertures de sorties (33, 34) sont largement protégés par un carter fermé.
  12. Dispositif selon la revendication 11, caractérisé en ce que le carter fermé du poste de transfert est réalisé de telle sorte que le chenal basculant ou pivotant (60) est recouvert sur toute sa longueur par un ou plusieurs couvercles (67) en formant un espace intérieur libre, c'est-à-dire non traversé par le métal liquide, le plus petit possible, et il possède une ou plusieurs ouvertures de sortie (61, 62) et présente, au niveau des cônes de sortie (61, 62), une buse annulaire ou une couronne de buses de gaz sous pression (63, 64).
  13. Dispositif selon la revendication 12, caractérisé en ce que le cône de sortie (61, 62) et la buse annulaire ou la couronne de buses de gaz sous pression (63, 64) sont disposés de telle sorte que l'axe longitudinal de canal (655) du cône de sortie (61, 62) et l'enveloppe de gaz inerte produite par la buse annulaire ou la couronne de buses de gaz sous pression (63, 64) se trouvent, dans la position de coulée, sensiblement à la verticale.
  14. Dispositif selon la revendication 12 ou 13, caractérisé en ce que l'espace intérieur libre déterminé par le chenal basculant ou pivotant (60) et le ou les couvercles (67) est fermé vers l'extérieur de manière largement étanche aux gaz.
  15. Dispositif selon la revendication 14, caractérisé en ce qu'une ou plusieurs buses (69) pour une admission de gaz inerte sont disposées sur le couvercle (67) ou le chenal basculant ou pivotant (60).
  16. Dispositif selon l'une quelconque des revendications 12 à 15, caractérisé en ce que le ou les couvercles (67) sont fixés de manière amovible au chenal basculant ou pivotant (60).
  17. Dispositif selon la revendication 16, caractérisé en ce que le ou les couvercles sont fixés au chenal basculant ou pivotant (60) en pouvant être écartés par pivotement.
  18. Dispositif selon l'une quelconque des revendications 12 à 17, caractérisé en ce que le cônes de sortie (61, 62) sont fixés de manière amovible ou encore interchangeable au chenal basculant (60).
  19. Dispositif selon l'une quelconque des revendications 12 à 18, caractérisé en ce que les transitions entre les chenaux d'évacuation (71) et les chenaux mobiles basculants ou pivotants (60) munis de leurs couvercles (67) sont pourvues de joints d'étanchéité appropriés (72), joints à labyrinthe ou joints frotteurs de préférence.
  20. Dispositif selon l'une quelconque des revendications 7 à 19, caractérisé en ce que le carter largement étanche aux gaz du poste de transfert (17, 18, 19) constituée d'une partie fixe (59) et du couvercle (36), possède une partie supérieure coulissante.
  21. Dispositif selon la revendication 20, caractérisé en ce que la partie supérieure est constituée d'une carcasse (35) avec au moins trois roues (49 à 51) et un couvercle (36).
  22. Dispositif selon la revendication 21, caractérisé en ce que la partie inférieure fixe (59) présente, sur ses côtés longitudinaux, des rails de roulement (53, 54) pour les roues (49, 50).
  23. Dispositif selon la revendication 21 ou 22, caractérisé en ce que la carcasse (35) est mobile en translation horizontale sur trois roues (49 à 51), deux roues (49, 50) roulant sur les deux rails de roulement latéraux (53, 54) de la partie inférieure fixe (59) et la troisième roue (51) roulant sur un autre rail de roulement (55), qui mène jusqu'à un côté frontal (52') du puits (52) et est disposé parallèlement et décalé par rapport aux rails de roulement latéraux (53, 54).
  24. Dispositif selon l'une quelconque des revendications 20 à 23, caractérisé en ce que le couvercle (36) présente une section sensiblement en forme de toit et est détachable de la carcasse (35).
  25. Dispositif selon l'une quelconque des revendications 20 à 24, caractérisé en ce que le couvercle est pourvu d'un rebord d'étanchéité (57), qui ferme la fente (58) entre le couvercle (36) et la partie inférieure fixe (59).
  26. Dispositif selon l'une quelconque des revendications 7 à 25, caractérisé en ce qu'une colonne verticale (80), disposée à côté du trou de percée et rotative autour de son axe longitudinal (81), présente un bras de flèche (82) à l'extrémité libre (82a) duquel est disposé un dispositif de levage (73) pourvu d'un dispositif de prise en charge (74) pour des capots de recouvrement (75).
  27. Dispositif selon la revendication 26, caractérisé en ce que le dispositif de prise en charge (74) est rotatif autour d'un axe vertical (76) par rapport au dispositif de levage (73).
  28. Dispositif de levage et de pivotement selon la revendication 27, caractérisé en ce que le dispositif de prise en charge (74) est relié au dispositif de levage (73) par l'intermédiaire d'une couronne pivotante à billes (74a).
  29. Dispositif selon la revendication 27 ou 28, caractérisé en ce que le dispositif de prise en charge (74) peut être entraîné au moyen d'un engrenage à fuseaux.
  30. Dispositif selon l'une quelconque des revendications 26 à 29, caractérisé en ce que le dispositif de prise en charge (74) présente des éléments de fixation (77) qui permettent de déposer sans moments les capots de recouvrement (75) sur un sol inégal, ou de les prendre en charge sans moments sur ce sol.
  31. Dispositif selon l'une quelconque des revendications 26 à 30, caractérisé par des manilles (77) comme éléments de fixation.
  32. Dispositif selon l'une quelconque des revendications 26 à 31, caractérisé en ce que le dispositif de levage (73) présente un guidage stable vis-à-vis des moments de torsion, afin d'absorber des moments unilatéraux en cas de sollicitation non uniforme.
  33. Dispositif selon l'une quelconque des revendications 26 à 32, caractérisé en ce que le dispositif de levage peut être relevé et abaissé au moyen d'une commande par câble, de préférence à moufle (73).
  34. Dispositif selon la revendication 33, caractérisé en ce que le guidage par câble (73) est monté élastiquement au point de fixation au moyen d'un ensemble de rondelles-ressorts.
  35. Dispositif selon l'une quelconque des revendications 26 à 34, caractérisé en ce que la colonne verticale (80) peut être entraînée en rotation au moyen d'un entraînement à fuseaux (78).
  36. Dispositif selon l'une quelconque des revendications 26 à 35, caractérisé par des dispositifs reproducteurs pour surveiller le déroulement des mouvements ou encore les positions momentanées de la colonne verticale (80) et/ou du dispositif de levage (73).
  37. Dispositif selon l'une quelconque des revendications 26 à 36, caractérisé en ce qu'une conduite de gaz inerte et éventuellement, si nécessaire, une conduite supplémentaire d'agent de refroidissement, de préférence une conduite d'eau, est fixée par des articulations tournantes de tuyauterie sur le dispositif de levage et du pivotement, l'extrémité libre de la conduite présentant de préférence une pièce d'un accouplement rapide pour l'accouplement au capot de recouvrement équipé de la pièce correspondante.
EP90900762A 1989-02-06 1989-12-20 Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee Expired - Lifetime EP0456641B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90900762T ATE89865T1 (de) 1989-02-06 1989-12-20 Verfahren zur vermeidung der entstehung der rauchgase in metallurgischen prozessen und beim fluessigmetall-transport von einem metallurgischen gefaess in abgiessgefaesse und vorrichtung zum fluessigmetall-transport von einem metallurgischen ofen in ein abgiessgefaess.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE3903444A DE3903444C1 (en) 1989-02-06 1989-02-06 Method and apparatus for transporting liquid metal from a metallurgical furnace to a casting vessel
DE3903444 1989-02-06
DE3929328A DE3929328A1 (de) 1989-09-04 1989-09-04 Vorrichtung zum fluessigmetall-transport von einem metallurgischen ofen in ein abgiessgefaess
DE3929328 1989-09-04
DE3930729 1989-09-14
DE3930729A DE3930729A1 (de) 1989-02-06 1989-09-14 Vorrichtung zum fluessigmetall-transport von einem metallurgischen ofen in ein abgiessgefaess
DE19893933894 DE3933894A1 (de) 1989-02-06 1989-10-11 Schwenk-hub-vorrichtung fuer abdeckhauben
DE3933894 1989-10-11

Publications (2)

Publication Number Publication Date
EP0456641A1 EP0456641A1 (fr) 1991-11-21
EP0456641B1 true EP0456641B1 (fr) 1993-05-26

Family

ID=27434502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90900762A Expired - Lifetime EP0456641B1 (fr) 1989-02-06 1989-12-20 Procede permettant d'eviter la formation de gaz de fumee lors de processus metallurgiques et du transport de metaux fondus d'un recipient metallurgique a des recipients de coulee et dispositif de transport de metaux fondus d'un four metallurgique a un recipient de coulee

Country Status (15)

Country Link
US (1) US5246485A (fr)
EP (1) EP0456641B1 (fr)
JP (1) JPH04504443A (fr)
KR (1) KR950003158B1 (fr)
AT (1) ATE89865T1 (fr)
AU (1) AU642636B2 (fr)
BR (1) BR8907878A (fr)
CA (1) CA2009309A1 (fr)
CS (1) CS30390A3 (fr)
DE (1) DE58904532D1 (fr)
ES (1) ES2049020T3 (fr)
FI (1) FI96324C (fr)
HU (2) HU210769B (fr)
MX (1) MX173367B (fr)
WO (1) WO1990008842A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU644694B2 (en) * 1990-10-20 1993-12-16 Klockner Stahl Gmbh Apparatus and method for delivering inert gas into a molten metal transportation vessel
DE4033482C1 (fr) * 1990-10-20 1992-02-20 Kloeckner Stahl Gmbh, 4100 Duisburg, De
FR2691163B1 (fr) * 1992-05-15 1994-08-05 Lorraine Laminage Procede et dispositif d'elimination des fumees produites par oxydation d'un metal en fusion au cours de son deversement dans un recipient metallurgique.
DE19532040C2 (de) * 1995-08-31 1999-05-27 Schloemann Siemag Ag Vorrichtung zum Flüssigmetall-Transport in der Gießhalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung
EP3081658A1 (fr) * 2015-04-17 2016-10-19 Oetinger Aluminium WH GmbH Récipient de transport pour métal liquide et procédé de remplissage d'un récipient de transport de métal liquide
CN110756791A (zh) * 2019-10-30 2020-02-07 首钢水城钢铁（集团）有限责任公司 铁水罐翻盖驱动全自动控制系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1004268A (fr) * 1947-03-27 1952-03-27 Procédé d'affinage, de dégazage et de coulée des métaux et alliages par une atmosphère contrôlée et produits obtenus
US3439735A (en) * 1965-11-19 1969-04-22 Union Carbide Corp Continuous casting apparatus with inert gas protector
SU747613A1 (ru) * 1976-08-23 1980-07-15 Магнитогорский государственный институт по проектированию металлургических заводов Устройство дл защиты струи металла газом
GB1603119A (en) * 1977-11-21 1981-11-18 Lodge Cottrell Ltd Fume containment
US4300753A (en) * 1980-02-21 1981-11-17 Bate Micheal D Hot metal runner system with air pollution controls
US4355788A (en) * 1980-03-24 1982-10-26 Bate Micheal D Hot metal runner system with air pollution controls
US4357003A (en) * 1980-09-24 1982-11-02 Jones & Laughlin Steel Corporation Blast furnace cast house pollutant suppression
GB2095805B (en) * 1981-03-27 1984-09-26 Boswell Alexander Bruce Ducting for drying grain
US4486230A (en) * 1981-07-23 1984-12-04 United States Steel Corporation Method for suppressing fume from a metal pouring operation
EP0071359A1 (fr) * 1981-07-23 1983-02-09 Uss Engineers And Consultants, Inc. Procédé et appareil éliminant des émanations gazeuses d'un bain métallique
LU86648A1 (de) * 1986-11-06 1988-06-13 Wurth Paul Sa Evakuierungsanlage fuer die emanationen im abstichlochbereich von schachtoefen

Also Published As

Publication number Publication date
EP0456641A1 (fr) 1991-11-21
KR950003158B1 (ko) 1995-04-01
ES2049020T3 (es) 1994-04-01
CS30390A3 (en) 1992-02-19
FI913720A0 (fi) 1991-08-05
US5246485A (en) 1993-09-21
HU210769B (en) 1995-07-28
WO1990008842A1 (fr) 1990-08-09
FI96324B (fi) 1996-02-29
JPH04504443A (ja) 1992-08-06
DE58904532D1 (de) 1993-07-01
ATE89865T1 (de) 1993-06-15
BR8907878A (pt) 1992-04-14
FI96324C (fi) 1996-06-10
HUT58004A (en) 1992-01-28
MX173367B (es) 1994-02-23
CA2009309A1 (fr) 1990-08-06
AU4815190A (en) 1990-08-24
AU642636B2 (en) 1993-10-28
KR910700356A (ko) 1991-03-14

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