EP0760395B1 - Installation pour le transport de métal liquide dans la halle de coulée d'un four à cuve et procédé pour le service de cette installation - Google Patents
Installation pour le transport de métal liquide dans la halle de coulée d'un four à cuve et procédé pour le service de cette installation Download PDFInfo
- Publication number
- EP0760395B1 EP0760395B1 EP96107534A EP96107534A EP0760395B1 EP 0760395 B1 EP0760395 B1 EP 0760395B1 EP 96107534 A EP96107534 A EP 96107534A EP 96107534 A EP96107534 A EP 96107534A EP 0760395 B1 EP0760395 B1 EP 0760395B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- pipe section
- main channel
- tap hole
- liquid metal
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910001338 liquidmetal Inorganic materials 0.000 title claims description 22
- 230000008569 process Effects 0.000 title description 4
- 238000009434 installation Methods 0.000 title 2
- 239000011261 inert gas Substances 0.000 claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 229910000805 Pig iron Inorganic materials 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 17
- 230000008439 repair process Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- 230000035515 penetration Effects 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002893 slag Substances 0.000 description 14
- 239000000428 dust Substances 0.000 description 13
- 230000008859 change Effects 0.000 description 11
- 238000010079 rubber tapping Methods 0.000 description 6
- 241000282485 Vulpes vulpes Species 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 241000589614 Pseudomonas stutzeri Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the invention relates to a device for liquid metal transport in the casting hall of a shaft furnace, especially blast furnace, and a method for Operation of this device consisting of at least one installed after tapping the blast furnace Main channel with siphon and downstream drainage channels with a transfer station in the liquid metal transport containers or trolley exists.
- Main channels have been around for some Years as so-called pool channels with relatively large Dimensions in which there is always a liquid residue Pig iron remains, executed. Are typical at Large blast furnace channels of 12 - 15 m length and 2.0 to 2.5 m width.
- the disadvantage here is that after each generation of 0.6 up to 0.8 million tons of pig iron requiring several days Refractory repair is needed, which is under unfavorable Conditions within the casting hall got to. During this time, the racking in question can not be used.
- the liquid metal initially flows in the main channel through a siphon (fox) to separate pig iron and slag; after that the slag-free flows Pig iron through open, but mostly like the main channel also covered with plates or hoods, with ff material supplied channels to the different Parking spaces for pig iron transport vehicles.
- siphon fox
- ff material supplied channels to the different Parking spaces for pig iron transport vehicles.
- tipping channels come with electric or hydraulic drive for Commitment.
- the slag separated at the siphon or fox in turn leaves the main channel and comes via open or with Covered gutters either to a slag pan, a pelletizer with water or freezes through natural cooling in one Cinder bed made of sand.
- Red dust (Fe oxide) accumulates particularly at the tap hole, the tipping channel and at the pig iron inlet in the transport vessel, but to a lesser extent also at the pig iron and slag channels covered with hoods and the main channel. This forms as a result of the hot pig iron coming into contact with the surrounding air.
- dedusting systems for high suction volumes are installed using the technology that is common today. These dedusting systems initially consist of a system for collecting the dusts (hoods, pipes), with several switchable strands being provided on blast furnaces with several tap holes. This in turn requires fittings with large diameters, corresponding actuators and control logic.
- the extracted air amounts are in the order of a few 100,000 Nm 3 / h to well over 1.0 million Nm 3 / h.
- intensive suction the contact of the hot pig iron with air is naturally intensified and the amount of dust per ton of pig iron increases.
- Devices for partitioning / housing are known of the pig iron flow through mechanical devices such as Hoods, covers and the like.
- DE 39 03 444 C1 describes one method and one Device for preventing air contact from Pig iron by fogging with inert gas, e.g. B. Nitrogen known from the tap hole of the metallurgical furnace leading the liquid metal Drainage channels to form the smallest possible free flow of liquid metal Interior are covered, the transfer point, in of the liquid metal from the transport and Drainage channel is passed into a pouring vessel, is shielded largely gastight, with both the free interior of the covered gutters as well the largely gas-tight shielded interior of the Transfer point and the pouring vessel interior with Be flushed with inert gas.
- the liquid metal discharge jet is from the outlet opening into the pouring vessel from a ring-shaped one that prevents air from entering Inert gas jacket additionally shielded.
- the device consists of at least one on one Tap opening of the metallurgical furnace installed Transport and drainage channel, a transfer station with a swivel or tilting channel and a distribution system for the liquid metal in a pouring vessel, each Transport and drainage channels over their entire length or has several covers, one as possible small free, d. H. not flowed through by the liquid metal Form interior.
- the transfer stations including the outlet openings are largely gastight due to a closed Shielded housing.
- a disadvantage of this tapping system is that of high temperature of the pig iron triggered thermals that a constant replenishment of the inert gas required.
- the present invention therefore has the task posed, a timely, safe and fast Opening and closing of blast furnace tap holes ensure suppression of dust formation in the areas taphole, main channel, pig iron and Slag chutes to allow a reduction in manual work in the gutter area a reduction in investment and operating costs to contribute.
- ff material Pipe section arranged between the racking on the blast furnace and the main channel.
- a stationary drill and one stationary tamping machine On both sides of the pipe section are a stationary drill and one stationary tamping machine arranged. This is the Pipe section itself with two connecting pieces equipped, through which the drill of the drill or the trunk of the tamping machine is guided.
- the ceramic (first) slide lock is used for tapping opened and then closed again. Immediately after the closing is over the Inert gas connection, the tap hole was washed free of pig iron and this state by automatically setting one maintain a small inert gas flow rate. The pig iron solidifies in the tap hole and a blocking of the slide closure avoided.
- the stuffing fills the tap hole towards the blast furnace; at the same time penetrates stuffing material in the direction of the stationary drilling machine to the tip of the drill bit, and at the same time it moves the stuffing also on the slide closure without however, to fully reach the ceramic slide plate, because an inert gas cushion forms in front of it.
- the subsequent opening of the tap hole is followed by Opening a flap veiled with inert gas at the top of the cover of the main channel second, above the main channel in an inclined position - Inclination approx. 6 ° according to the inclination of the tap hole - arranged drill after opening the ceramic slide closure operated.
- This drill drills the tap hole through the Pipe section as well as through the inside of the On the FF lining. As soon as the tap hole is free, the drill will be withdrawn and the flap closed. To the unavoidable occurring during this drilling process To collect dust is on the exhaust hood a dedusting line connected to a small, only for the duration of the drilling process operated filter system, leads.
- the main channel is one Covering hood covered.
- the connection between The main channel and cover hood are known per se Way carried out so that the entry of outside air the pig iron bath located inside the main channel is largely suppressed, e.g. B. by means of a sand cup.
- the cover hood can be raised and lowered mechanically as well as laterally movable, for inspections and possibly ff repairs quick access to To create the main channel.
- each tube length also has one metallic pin that the entire ff-delivery of penetrates inside and out in contact with the liquid pig iron is available when this through the Pipe length flows.
- a suitable electrical Circuit it is possible to instantly recognize if at one point the molten pig iron Wear lining has consumed so far that this in Comes into contact with the wire mesh.
- the person in question Pipe length can be reduced at the next opportunity Effort changed and a freshly delivered one Pipe section can be used.
- the pipe system comes with appropriate branches provided so that it has all the designated parking spaces with Can supply pig iron. Switching the pig iron flow from one parking space to the other takes place by means of remote operated ceramic slide closures.
- Such heating has the advantage that, on the one hand the pig iron does not solidify and on the other hand none Temperature change stress for the Refractory lining occurs.
- the main channel is designed as a quick change channel. No heavy lifting gear is needed to change them needed, but lowering the used and the new main channel is lifted with a hydraulic lifting device, such as from known from EP 0 279 165 B1.
- the invention is based on schematic Embodiments described in more detail.
- FIG. 1 shows a plan view of the tapping system or on one of the liquid metal transport systems of a blast furnace (1) with arranged in the blast furnace shell (1.1) Racking (1.2) with tap hole (1.3).
- a pipe section (3) with a first connection piece (3.1) for a stationary one Drill (4) and a second connection piece (3.2) for flanged a stationary tamping machine (5).
- a first connection piece (3.1) for a stationary one Drill (4) and a second connection piece (3.2) for flanged a stationary tamping machine (5).
- To the Pipe section (3) then closes a first slide (6.1) with a ceramic plate and the inlet opening (2.1) of the main channel (2).
- Inert gas feeds (7) arranged at the pipe section (3) before (in the sense of Pig iron flow) and behind the first slide (6.1) on the Inlet opening (2.1) of the main channel (2) Inert gas feeds (7) arranged.
- Another Inert gas supply (7) is at the outlet opening (2.2) the main channel (2).
- a burner (15) for Heating the pipe sections (12) is in the first Pipe section arranged after the main trough (2).
- Fig. 2 shows a longitudinal section through the front part the liquid transport system.
- a pipe section (3) with connecting piece (3.1, 3.2) flanged to which a second Connects pipe section (3) with a first slide (6.1).
- This second pipe section (3) is with the inlet opening (2.1) the main channel (2) also gas-tight connected.
- another pipe section (12) with a second one Flanged slide (6.2) to the other if necessary Pipe sections (12) are added.
- a T-shaped pipe section (13) arranged the pig iron in one of two Cast iron dolly is flowing.
- the main channel (2) is designed as a quick change channel. It becomes worn after the ff lining about tension elements, not shown, on tie rods slide down and up from the operating position in Height of the racking platform on a standing in the hallway Transport vehicle lowered.
- the tie rods are on Main beam support brackets (2) attached.
- Fig. 3 shows the cross section through a ff material pipe section (3/12).
- the ff material consists of the insulating layer (12.1), the Permanent lining (12.2) and the wear lining (12.3) together.
- a wire mesh (12.4) is inserted, which over a metallic pin (12.5) with an electrical one Monitoring device is connected to the state of the wear chuck (12.3).
- Fig. 4 shows devices for sealing two Pipe sections (3) or (12).
- a pipe clamp (3.3) is placed on each side with a supply line (3.4) with shut-off valve (3.5) is provided to a sealant (3.7) in the remaining free gap between the bricked Press pipe sections (3) or (12) into it.
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)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Continuous Casting (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Manufacture Of Iron (AREA)
Claims (10)
- Appareil pour le transport de métal liquide dans la salle de fonderie d'un four vertical, en particulier d'un haut-fourneau, qui comprend au moins une goulotte principale installée au niveau de l'ouverture de piquée, avec siphon, goulotte de sortie, ainsi qu'une station pour le transfert dans les récipients ou les chariots de transport de métal liquide,
caractérisé en ce que :a) entre la piquée (1.2) au niveau du haut-fourneau (1) et la goulotte principale (2) est prévu un tronçon de tube à brides (3) avec un premier manchon de raccordement (3.1) pour une machine à percer (4) et un deuxième manchon de raccordement (3.2) pour une machine de bouchage (5) pour le trou de piquée, et il est prévu une admission de gaz inerte (7) et un premier obturateur à tiroir (6.1) avec plaque céramique, agencés entre le tronçon de tube à bride (3) et l'ouverture d'entrée (2.1) de la goulotte principale (2),b) la goulotte principale (2) avec le siphon (11) est raccordée de manière étanche aux gaz avec un capot de couverture (9) pourvu d'un volet (8),c) entre l'ouverture de sortie (2.2) de la goulotte principale (2) et au moins un autre tronçon de tube (2) est agencé un deuxième obturateur à tiroir (6.2) avec plaque céramique,d) ledit au moins un autre tronçon de tube (12) débouche dans un tronçon de tube (13) en forme de T, ete) un troisième obturateur à tiroir (6.3a, 6.3b) respectif est agencé entre le tronçon de tube (13) en forme de T et les coudes tubulaires (14) qui s'y raccordent. - Appareil selon la revendication 1, caractérisé en ce que des admissions de gaz inerte (7) sont prévues au niveau de l'ouverture d'entrée (2.1), de l'ouverture de sortie (2.2), et au niveau du volet (8).
- Appareil selon la revendication 1, caractérisé en ce qu'il est prévu un rideau de gaz inerte (17) au niveau des coudes tubulaires (14).
- Appareil selon la revendication 1, caractérisé en ce qu'il est prévu une machine à percer stationnaire (4) au niveau du premier manchon de raccordement (3.1), une machine de bouchage stationnaire (5) au niveau du deuxième manchon de raccordement (3.2), et une machine de perçage de trous de piquée (10) stationnaire sur le volet (8) au-dessus du capot de couverture (9).
- Appareil selon la revendication 1, caractérisé en ce que pour l'étanchement de tronçons de tube, d'un tronçon de tube avec obturateur à tiroir (6.1 ; 6.2 ; 6.3a ; 6.3b), ainsi que de tronçons de tube entre eux, du tronçon de tube en forme de T (13) avec un tronçon de tube (12), ou avec un coude tubulaire (14), il est prévu un collier à tube (3.3) avec des conduites d'amenée (3.4) et des robinets d'isolement (3.5) agencés latéralement.
- Appareil selon la revendication 1, caractérisé en ce qu'il est prévu un tissu en fil métallique (12.4) ainsi qu'une pointe métallique (12.5) d'un appareil de mesure électrique, dans les tronçons de tube (3, 12, 13) et dans les coudes tubulaires (14) à la transition du garnissage permanent (12.2) vers le garnissage d'usure (12.3).
- Appareil selon la revendication 1, caractérisé en ce qu'un brûleur (15) est agencé sur l'un des tronçons de tube (12).
- Appareil selon la revendication 1, caractérisé en ce que la goulotte principale (2) est équipée à titre de goulotte à échange rapide.
- Procédé de fonctionnement d'un appareil pour le transport de métal liquide dans la salle de fonderie d'un four vertical, en particulier d'un haut fourneau, selon les revendications 1 à 8, et pour obtenir l'ouverture et la fermeture temporelle exacte de la piquée afin de doser précisément la quantité de métal liquide, l'appareil comprenant au moins une goulotte principale installée au niveau de l'ouverture de piquée, avec siphon et goulotte de sortie et avec une station pour le transfert dans les récipients ou les chariots de transport pour le métal liquide, de telle manière que :a) pour l'ouverture du trou de piquée bouché (1.3), après l'ouverture de la plaque céramique du premier obturateur à tiroir (6.1) et après ouverture d'un volet de fermeture (8) au niveau de la face supérieure du capot de recouvrement (7) de la goulotte principale (2), une machine de perçage (10) de trou de piquée perce la masse formant bouchon durcie à l'intérieur du trou de piquée (1.3) de la piquée (1.2) et d'un tronçon de tube (3) qui est agencé entre la piquée (1.2) et la goulotte principale (2),b) après ouverture du trou de piquée (1.3), un flux de métal liquide s'écoule via le tronçon de tube (3), le premier obturateur à tiroir ouvert (6.1), l'ouverture d'entrée (2.1) jusque dans la goulotte principale (2) protégée de manière étanche aux gaz avec siphon (11), et après séparation des scories, le flux de fer brut s'écoule à travers l'ouverture de sortie (2.2) via au moins un autre tronçon de tube (12) via un deuxième obturateur à tiroir ouvert (6.2) jusque dans un tronçon de tube (13) en forme de T, et parvient depuis celui-ci, via un troisième obturateur à tiroir ouvert (6.3a ; 6.3b) à travers un coude tubulaire (14) jusque dans un chariot de transport de fer brut (18),c) immédiatement après la fermeture du premier obturateur à tiroir (6.1) disposé dans le premier tronçon de tube (3), le trou de piquée (1.3) est dégagé de métal liquide au moyen d'un gaz inerte, et cet état est maintenu en établissant un écoulement d'une quantité spécifique de gaz inerte,d) afin de boucher, dans le sens d'une réparation, le trou de piquée (1.3) dégagé par le courant de métal liquide, ou pour échanger la plaque céramique du premier obturateur à tiroir (6.1), le trou de piquée (1.3) de la piquée (1.2) est dégagé au moyen d'un gaz inerte, à l'aide d'un embout de perçage d'une machine de perçage stationnaire (4), prévue dans un premier manchon de raccordement (3.1) du premier tronçon de tube (3), ce manchon de raccordement (3.1) du tronçon de tube (3) est dégagé par perçage de la masse formant bouchon durcie, et l'embout de perçage de la machine de perçage (4) perce un canal dans la masse durcie formant bouchon du trou de piquée (1.3) et ensuite un deuxième manchon de raccordement (3.2) du premier tronçon de tube de la machine de bouchage (5), ete) pour l'introduction d'une masse de bouchage au moyen de la machine de bouchage (5) via le deuxième manchon de raccordement (3.2), une masse de bouchage est déplacée à l'intérieur du premier tronçon de tube (3) en direction du trou de piquée (1.3), en direction du premier manchon de raccordement (3.1) et en direction de la plaque céramique du premier obturateur à tiroir (6.1), la plaque céramique du premier obturateur à tiroir (6.1) étant cependant protégée, ou dégagée en vue d'un échange, au moyen d'un tampon de gaz inerte, à l'encontre d'une poursuite de pénétration de la masse de bouchage.
- Procédé selon la revendication 9, caractérisé en ce que pour éviter des bavures de fer brut au niveau des jointures après des travaux de réparation, on effectue une jonction étanche de tronçons de tube (3, 12, 13) et des coudes tubulaires (14) par introduction d'un bouchon de matière plastique (3.6) et d'une masse d'étanchement (3.7).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19532040 | 1995-08-31 | ||
DE19532040A DE19532040C2 (de) | 1995-08-31 | 1995-08-31 | Vorrichtung zum Flüssigmetall-Transport in der Gießhalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0760395A1 EP0760395A1 (fr) | 1997-03-05 |
EP0760395B1 true EP0760395B1 (fr) | 2001-11-14 |
Family
ID=7770842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107534A Expired - Lifetime EP0760395B1 (fr) | 1995-08-31 | 1996-05-11 | Installation pour le transport de métal liquide dans la halle de coulée d'un four à cuve et procédé pour le service de cette installation |
Country Status (12)
Country | Link |
---|---|
US (1) | US5673901A (fr) |
EP (1) | EP0760395B1 (fr) |
JP (1) | JPH09125117A (fr) |
KR (1) | KR100426672B1 (fr) |
AT (1) | ATE208830T1 (fr) |
AU (1) | AU698803B2 (fr) |
BR (1) | BR9603635A (fr) |
CA (1) | CA2182246A1 (fr) |
DE (2) | DE19532040C2 (fr) |
ES (1) | ES2167483T3 (fr) |
TW (1) | TW302312B (fr) |
ZA (1) | ZA966673B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3011366B2 (ja) | 1995-10-26 | 2000-02-21 | 株式会社ノリタケカンパニーリミテド | 膜形成素材を含む基板の焼成方法および装置 |
US5777705A (en) * | 1997-05-30 | 1998-07-07 | International Business Machines Corporation | Wire bond attachment of a liquid crystal display tile to a tile carrier |
CN101942536B (zh) * | 2009-07-07 | 2012-10-24 | 范威 | 高炉铁口用多通道旋转接头 |
CN102417942A (zh) * | 2010-09-27 | 2012-04-18 | 周久乐 | 一种高炉炼铁虹吸出铁装置 |
CN113579176B (zh) * | 2021-07-30 | 2022-11-29 | 湖南精量重工科技有限公司 | 一种铸造高精度的工件铸造方法 |
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US3262692A (en) * | 1966-07-26 | Furnace botting and tapping apparatus | ||
GB1064617A (en) * | 1965-07-08 | 1967-04-05 | Huttenwerksanlagen Ges | Apparatus for tapping metal from furnaces |
US3365187A (en) * | 1965-10-20 | 1968-01-23 | Bethlehem Steel Corp | Runner system for blast furnace |
US4208041A (en) * | 1970-09-15 | 1980-06-17 | Abrashev Georgi I | Metallurgical apparatus |
DE2619534C2 (de) * | 1976-05-04 | 1978-06-29 | Didier-Werke Ag, 6200 Wiesbaden | Abflußeinrichtung für metallurgische öfen |
GB1603119A (en) * | 1977-11-21 | 1981-11-18 | Lodge Cottrell Ltd | Fume containment |
GB1596442A (en) * | 1978-02-07 | 1981-08-26 | Lydmet Ltd | Casting of long hollow objects |
DE2918344A1 (de) * | 1979-05-07 | 1980-11-20 | Metacon Ag | Schieberverschluss fuer den abstichkanal eines metallurgischen ofens oder gefaesses |
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 |
US4354668A (en) * | 1981-08-20 | 1982-10-19 | Jones & Laughlin Steel Incorporated | Method and apparatus for determining completion of a cast in blast furnace casthouse pollution suppression system |
US4475720A (en) * | 1983-03-14 | 1984-10-09 | Broom Gilbert R | Casthouse emission control system |
DE3624266A1 (de) * | 1986-07-18 | 1988-01-21 | Gutehoffnungshuette Man | Vorrichtung zum auswechseln von hauptabstichrinnen an hochoefen |
DE3705099A1 (de) * | 1987-02-18 | 1988-09-01 | Gutehoffnungshuette Man | Vorrichtung zum auswechseln von abstichrinnen an schachtoefen |
JP2671431B2 (ja) * | 1988-09-14 | 1997-10-29 | 株式会社豊田自動織機製作所 | 超電導可逆可変インダクタ |
DE3903444C1 (en) * | 1989-02-06 | 1990-02-15 | Kloeckner Stahl Gmbh | Method and apparatus for transporting liquid metal from a metallurgical furnace to a casting vessel |
HUT58004A (en) * | 1989-02-06 | 1992-01-28 | Kloeckner Stahl Gmbh | Method for eliminating the formation of flue gases at metallurgical operations and at the transportation of liquid metal from the metallurgical pots into the casting crucibles and structure for transporting the liquid metal from the furnaces of metallurgy of non-ferrous metals to the casting crucibles |
DE3904415C1 (fr) * | 1989-02-14 | 1990-04-26 | Intracon Handelsgesellschaft Fuer Industriebedarf M.B.H., 6200 Wiesbaden, De | |
DE4033482C1 (fr) * | 1990-10-20 | 1992-02-20 | Kloeckner Stahl Gmbh, 4100 Duisburg, De |
-
1995
- 1995-08-31 DE DE19532040A patent/DE19532040C2/de not_active Expired - Fee Related
-
1996
- 1996-05-11 EP EP96107534A patent/EP0760395B1/fr not_active Expired - Lifetime
- 1996-05-11 ES ES96107534T patent/ES2167483T3/es not_active Expired - Lifetime
- 1996-05-11 AT AT96107534T patent/ATE208830T1/de not_active IP Right Cessation
- 1996-05-11 DE DE59608182T patent/DE59608182D1/de not_active Expired - Fee Related
- 1996-06-14 TW TW085107150A patent/TW302312B/zh active
- 1996-07-25 US US08/686,032 patent/US5673901A/en not_active Expired - Fee Related
- 1996-07-25 AU AU60695/96A patent/AU698803B2/en not_active Ceased
- 1996-07-29 CA CA002182246A patent/CA2182246A1/fr not_active Abandoned
- 1996-08-06 ZA ZA9606673A patent/ZA966673B/xx unknown
- 1996-08-14 JP JP8245389A patent/JPH09125117A/ja not_active Ceased
- 1996-08-30 KR KR1019960036696A patent/KR100426672B1/ko not_active IP Right Cessation
- 1996-09-02 BR BR9603635A patent/BR9603635A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU6069596A (en) | 1997-03-06 |
AU698803B2 (en) | 1998-11-05 |
DE19532040C2 (de) | 1999-05-27 |
ES2167483T3 (es) | 2002-05-16 |
KR100426672B1 (ko) | 2004-06-24 |
DE19532040A1 (de) | 1997-03-06 |
US5673901A (en) | 1997-10-07 |
ZA966673B (en) | 1997-02-17 |
EP0760395A1 (fr) | 1997-03-05 |
BR9603635A (pt) | 1998-05-19 |
ATE208830T1 (de) | 2001-11-15 |
DE59608182D1 (de) | 2001-12-20 |
JPH09125117A (ja) | 1997-05-13 |
KR970010979A (ko) | 1997-03-27 |
CA2182246A1 (fr) | 1997-03-01 |
TW302312B (fr) | 1997-04-11 |
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