EP1097246A1 - Verfahren und vorrichtung zum abdichten einer abstichöffnung in metallurgischen gefässen - Google Patents
Verfahren und vorrichtung zum abdichten einer abstichöffnung in metallurgischen gefässenInfo
- Publication number
- EP1097246A1 EP1097246A1 EP99929165A EP99929165A EP1097246A1 EP 1097246 A1 EP1097246 A1 EP 1097246A1 EP 99929165 A EP99929165 A EP 99929165A EP 99929165 A EP99929165 A EP 99929165A EP 1097246 A1 EP1097246 A1 EP 1097246A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tapping
- stopper
- tube
- opening
- tap opening
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 title claims abstract description 15
- 238000010079 rubber tapping Methods 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000009969 flowable effect Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 29
- 239000002893 slag Substances 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 239000000571 coke Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000004576 sand Substances 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000005303 weighing Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910004709 CaSi Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4653—Tapholes; Opening or plugging thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/44—Consumable closure means, i.e. closure means being used only once
- B22D41/46—Refractory plugging masses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1545—Equipment for removing or retaining slag
- F27D3/159—Equipment for removing or retaining slag for retaining slag during the pouring of the metal or retaining metal during the pouring of the slag
Definitions
- the invention relates to a method and a device for sealing a tap opening in metallurgical vessels
- tapping is carried out, for example, by tilting the furnace vessel sideways it is unavoidable that slag partially runs out of the tap hole with the melt jet
- the tapping opening is prepared for a new batch by closing the opening with a closing plate and filling sand into this opening.
- the sand filling process is carried out either manually or using a mechanical loading system.
- the opening is optimally filled with sand when manual Filling process not possible
- this step can be time consuming and labor intensive if cleaning work needs to be carried out
- a low-slag tapping system in a converter by means of a float or slag stopper is known.
- a float the specific weight of which lies between that of the molten steel and that of the slag, is introduced into the molten bath above the vortex caused by seizing.
- sealing the tap opening depends solely on the sinking melt / slag boundary layer and cannot otherwise be influenced.
- a completely slag-free leakage of the melt with this float solution is not reachable
- the so-called AMEPA system has become known for tapping in pans.
- This system is mainly used to check the tapping from the pan into the distributor of a continuous caster.
- This is a tapping system based on the electromagnetic principle.
- the tapping is ended and the separation process between the melt and slag is reached via a sensor that is installed on the ladle spout.
- a slag-free tapping is not feasible with this principle, since the sensor only reacts when there is already one Part of the slag has flowed through the opening
- German patent DE 33 27 671 also discloses a device for largely slag-free tapping of metal melts, in particular steel melts, from metallurgical vessels.
- the object here is to prevent eddy formation and thus mixing of slag and melt by immersing a shut-off element
- a shut-off body is proposed which can be moved into the metallurgical vessel by means of a lifting and lowering rod via a lifting system. By lowering the flow body and holding it briefly above the bottom of the vessel above The negative potential vortex is better tied to the tap opening.
- EP 0 315 311 B1 discloses a stopper for closing tapping openings in metallurgical vessels.
- This stopper consists of a cylindrically shaped container made of metal, which is provided with two plates at its ends. Here, the end pointing towards the interior of the vessel during installation of the container and the corresponding inner plate are spaced apart from each other.
- the metallic container receives refractory material, such as sand. This sand is surrounded by a plastic film.
- the plug is provided with a plunger, which is used to place the plug in the hole is that the outer plate is moved against the inner plate along a rod guide that penetrates the sand mass. This tears the plastic film. This process is supported by a jagged edge surface of the container. The sand emerges from the gap and into the Space between container and tap opening u nd thus creates a sealing connection. The plunger is then turned off, while the metallic container remains in the tap hole
- the present invention is therefore based on the object of providing a method and a tapping system with which a slag-free tapping can be carried out easily and inexpensively in a metallurgical vessel and steel with a high degree of purity can thus be produced
- This object is achieved according to the invention by means of the features of method claim 1 and of device claim 7.
- Advantageous refinements of the invention are disclosed in the subclaims
- the essence of the invention is the creation of a tap system with which the tap opening of a metallurgical vessel can be optimally sealed. This is achieved by a special design of the plug, according to the method. It is proposed to control the time at which the plug is introduced into the tap opening, for example depending on Weight of the tapped steel, the bath mirror or via a slag detection system. Automatic, but also semi-automatic or manual controls are preferably possible. The time of import can be controlled selectively or, for example, via a signal which is determined by visual scanning on a screen pointer
- the stopper according to the invention consists of a stopper sleeve which receives a flowable substance.
- This filled stopper sleeve is introduced into the tap opening through the liquid metal or from outside the metallurgical vessel.
- the tap hole is then closed, for example by means of a closing plate.
- the invention makes use of the fact that the material of the stopper casing changes with regard to its consistency and / or its shape due to the influence of temperature in such a way that the flexible substance can spread out in the tap opening.
- the material of the stopper casing is preferably a temperature-insulating material, for example cardboard or wood
- the flowable material is preferably full sand. This forms a sintered layer that seals the tap opening on the contact surface with the molten metal after the shell has disintegrated.This means an additional sealing effect since the amount of full sand is dosed in the stopper casing and depending on the wear of the tap hole can be varied, the tap hole can be sealed with an optimal amount of sand. It is thus avoided that the sand 3- The hole is not completely filled for sealing. Problems with opening the tap hole are avoided
- the import means for the stopper sleeve are preferably a metal rod or a metal tube which can be moved through the melting material to the tap opening.
- the metal rod or the metal tube consists of links which allow them to be moved out of the horizontal using an arcuate guide to move the vertical
- This protective tube also consists of a material that is only briefly resistant to the molten metal.
- This material for the plug casing and the protective tube is cardboard, which is in the molten metal coked All other types of materials are also conceivable which change their consistency due to the temperature effect of the molten metal, which also includes total dissolving, or change their shape by losing their strength
- the fulisand absorbed by the shell can contain binders which disintegrate at temperatures as high as the molten metal. It is also conceivable that the fulisand within the shell is surrounded by an intermediate protective layer and is vacuum-sealed. This intermediate protective layer is advantageously a film that dissolves at the given temperatures
- a support plate lies on top of the full sand.
- the rod or tube can use the support plate to push the fulisand further down
- Another embodiment of the invention provides that in addition to the stopper casing as the first chamber for receiving filler, the cavity of the protective tube is used as a second chamber.
- This second chamber serves as a storage chamber for filler.
- the second chamber is filled with filler in particular when the The diameter of the tap opening has become larger due to wear
- this second chamber is located between the rod that can be axially guided through the protective tube and the inner surface of the protective tube.
- the amount of filler in this second chamber can be selected depending on the need if the import means is a pipe, it penetrates the first chamber with the protective tube surrounding it.
- the second chamber is formed in the cavity of the import pipe inside and above the first chamber.
- the bottom of the first chamber is provided with a plug, preferably made of ceramics. To protect the filler when it passes through the hot melt, the chambers and the plug are surrounded by the temperature-insulating plug sleeve. This plug can be moved through the rod or the pipe due to pressure. The movement of the import means moves the plug,the wrapping tore at the bottom, and filler emerges
- the proposed method and the stopper show the advantage of a slag-free tapping. If the method is already used in the electric furnace, the secondary metallurgical treatment, in particular with regard to the current requirement for "clean steel", is considerably simplified Slag is prevented.
- the invention results in a saving of the deoxidizing agents, the guidewires such as CaSi and the synthetic slag. Favorable conditions for desulfurization and degassing are also created. The casting properties are improved
- the method according to the invention makes it possible to end the tapping at a precisely determined target tapping weight.
- the time for introducing the stopper into the tapping opening is controlled, for example, as a function of the weight of the melt that has already been tapped the time of import can be controlled by means of a bath level measuring system or an early slag detection system
- Figure 1 is an enlarged view of the plug of the tapping system at
- FIG. 2 shows an enlarged illustration of the stopper according to the invention with complete reception in the tap opening
- Figure 3 is an enlarged view of the stopper according to the invention
- FIG. 4 shows the racking in an electric furnace with the automatically controlled racking system
- FIG. 5 shows the tapping end in an electric furnace with the automatically controlled tapping system
- FIG. 6 shows an enlarged illustration of an embodiment of the stopper according to the two-chamber system in a position inserted into a tap opening of a metallurgical vessel
- Figure 7 is an enlarged view of another embodiment of the
- Stopper according to the two-chamber system in a position inserted into a tap opening of a metallurgical vessel
- Figure 1 shows a partial enlargement of the plug 1 of the tapping system during the immersion process in the tap opening 2 in the bottom 3 of an electric furnace 4
- the stopper 1 comprises a casing 7 and a core 8 made of fulisand, which is surrounded by the casing 7 as a protective jacket.
- the plug 1 is inserted into the tap opening 2 by means of a metal rod 9 via a lifting system 10 coming from the interior of the vessel
- the metal rod 9 acts on the fulisand 8 via a support grid 11.
- a plug 12 forms the end of the solid sand core 8 to the bottom region of the stopper casing.
- the diameter of the plug corresponds at least approximately to the diameter of the tap opening 2 at its lower end
- a protective tube 13 This tube can be formed as a whole with the sleeve 7 of the stopper or attached to it.
- the protective tube 13 in combination with the sleeve 7 forms the outer jacket for the metal rod 9 and den Fullsandkem 8
- the protective tube 13 can be made of the same material as the casing of the plug. According to the invention, this is a material that can only withstand the temperature influence of the melt for a certain time.
- the casing consists of cardboard, which is due to of the high temperatures
- the fulis sand can also be provided by means of an intermediate protective film (not shown) be vacuum-sealed, which dissolves at the existing temperatures.
- the sand can be bound with binders which disintegrate at high temperatures, for example synthetic resin
- the tap opening 2 is closed from the outside of the metallurgical vessel.
- This closed state shows Figure 2
- the closure means is a closing plate 14. It can also be any other type of conventional closure means.
- the metal rod 9 is separated by an automatic release of a clamping device (not shown) and withdrawn through the interior of the vessel
- Figures 4 and 5 show an embodiment of the tapping system according to the invention using the example of an electric furnace during a tapping ( Figure 4) and at the tapping end ( Figure 5).
- a section of an electric furnace 4 is shown 14 pushed back below the tap hole 2
- the sand in the tap hole 2 runs out, and the molten steel 5 is poured into a pan 17
- the electric furnace is operated with a sufficient sump so that there is a sufficient bath height above the tap hole when tapping and there are no vortices which could cause the slag to run along undesirably.
- the furnace 4 is provided with a relatively lower oriel or with a tap hole directly in the stove or with a large one swamp
- the weight of the tapped melt is measured by means of a weighing device 18.
- the weighing device is a weighing cell which is arranged below the pan 17 in the transport trolley 19.
- the current weight is detected by measuring signals from a measuring system 20 and fed into a data processing system 21 after reaching the desired tapping weight, the metal rod 9 of the tapping system is moved vertically through the interior of the vessel via a lifting device 10, which is controlled by means of a plug control system 22, in order to close the tap opening 2 with the plug 1.
- Such a lifting device is advantageously adapted to the extreme operating conditions at one
- this lifting device could be arranged on the furnace barrel or on the tilting platform.
- a known early slag detection system can be provided, for example in the event of fluctuations in the bath height connected to the data processing system 21 and the stopper control system 22 Even if the desired molten steel weight has not yet been reached, the stopper is moved into the tap opening as soon as the running of slag has been determined.
- the rapid reaction of the tapping system according to the invention makes it possible to prevent slag from escaping
- FIG. 6 shows a first embodiment of the stopper according to the two-chamber system.
- the components that correspond to FIGS. 1 to 3 are provided with corresponding reference numerals.
- FIGS. 6 and 7 do not show the initial state of the stopper, but rather the import state into the tap opening Stopper composed of a first chamber covered with cardboard and a second chamber, which is also covered with cardboard. The bottom of the first chamber is detachably closed with a stopper, which is located within the protective covering
- the first chamber is designated by 123, the second chamber by 124.
- the second chamber extends between the inner jacket surface of the protective tube 113 adjoining the plug sleeve 7 of the first chamber 123 and the outer flat of the metal rod 109
- the plug 112 is released from the bottom of the first chamber by pressurizing the rod 109 and undergoes a pushing movement in the direction of the outside of the vessel.
- the bottom-side covering tears, and fulisand 125 emerges.
- the stopper is moved continuously by contact with the axially movable rod.
- the diameter of the stopper is dimensioned in the two-chamber system so that guidance within the narrowing tap opening is possible
- the metal rod is replaced by a hollow tube 226.
- the protective tube 213 receives this tube 226 and penetrates the part of the plug casing 7 covering the top of the chamber 223 and thus the first chamber 223.
- the second chamber 224 is in the cavity of the inlet tube 226 formed
- the plug 212 experiences an impact movement and tears the bottom-side covering (no longer shown). Fulisand 225 emerges. If the plug is displaced by a contact movement, the full sand runs out of the second Chamber of pipe 213 must be moved back
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Charging Or Discharging (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19826085A DE19826085C2 (de) | 1998-06-12 | 1998-06-12 | Verfahren und Vorrichtung zum Abdichten einer Abstichöffnung in metallurgischen Gefäßen |
DE19826085 | 1998-06-12 | ||
PCT/EP1999/003993 WO1999066082A1 (de) | 1998-06-12 | 1999-06-10 | Verfahren und vorrichtung zum abdichten einer abstichöffnung in metallurgischen gefässen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1097246A1 true EP1097246A1 (de) | 2001-05-09 |
EP1097246B1 EP1097246B1 (de) | 2003-03-26 |
Family
ID=7870617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99929165A Expired - Lifetime EP1097246B1 (de) | 1998-06-12 | 1999-06-10 | Verfahren und vorrichtung zum abdichten einer abstichöffnung in metallurgischen gefässen |
Country Status (19)
Country | Link |
---|---|
US (1) | US6471911B1 (de) |
EP (1) | EP1097246B1 (de) |
JP (1) | JP2002518183A (de) |
KR (1) | KR20010052670A (de) |
CN (1) | CN1305535A (de) |
AR (1) | AR019619A1 (de) |
AT (1) | ATE235565T1 (de) |
BR (1) | BR9911153A (de) |
CA (1) | CA2334963A1 (de) |
CZ (1) | CZ20004642A3 (de) |
DE (2) | DE19826085C2 (de) |
EG (1) | EG22341A (de) |
HU (1) | HUP0102223A3 (de) |
MX (1) | MXPA00012305A (de) |
PL (1) | PL344747A1 (de) |
SK (1) | SK18782000A3 (de) |
TW (1) | TW436524B (de) |
WO (1) | WO1999066082A1 (de) |
ZA (1) | ZA200007133B (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10111275A1 (de) * | 2001-03-09 | 2002-09-12 | Sms Demag Ag | Verfahren und Vorrichtung zum Stichlochstopfen und/oder Stichlochbohren an einem metallurgischen Gefäß, insbesondere an einem Elektroschmelzofen |
DE10111273A1 (de) * | 2001-03-09 | 2002-09-12 | Sms Demag Ag | Verfahren und Einrichtung zum Auswechseln einer Schieberbaugruppe an einem metallurgischen Gefäß, insbesondere an einem Elektroschmelzofen |
TW574495B (en) | 2001-09-26 | 2004-02-01 | Sms Demag Ag | Arc furnace and method for operating the arc furnace |
US7704445B2 (en) * | 2005-06-29 | 2010-04-27 | Process Technology International, Inc. | Systems and methods for accessing a furnace melt |
US7704444B2 (en) * | 2005-06-29 | 2010-04-27 | Process Technology International, Inc. | Method and apparatus for testing characteristics of a furnace melt |
US8277721B2 (en) * | 2005-06-29 | 2012-10-02 | Process Technology International, Inc. | Systems and methods for accessing a furnace melt |
US8210402B2 (en) * | 2009-02-09 | 2012-07-03 | Ajf, Inc. | Slag control shape device with L-shape loading bracket |
US8062577B2 (en) | 2009-04-10 | 2011-11-22 | Edw. C. Levy Co. | Alumina taphole fill material and method for manufacturing |
WO2011009579A1 (de) * | 2009-07-20 | 2011-01-27 | Fuchs Technology Holding Ag | Abdicht- und verfüllvorrichtung für einen metallurgischen ofen, metallurgischer ofen und verfahren zum abstechen eines metallurgischen ofens |
US8715567B2 (en) | 2010-09-23 | 2014-05-06 | Gillespie + Powers, Inc. | Furnace tap hole flow control and tapper system and method of using the same |
CN103353232B (zh) * | 2013-07-26 | 2015-01-21 | 朱兴发 | 电磁矿渣熔炉左轮弹盒式多孔下拉塞石墨质水口装置 |
CN108127110B (zh) * | 2017-02-28 | 2023-06-09 | 安徽工业大学 | 一种可保护出钢的钢水转运装置及可保护出钢的电炉炼钢系统 |
CN111942766B (zh) * | 2020-07-23 | 2022-05-20 | 生态环境部华南环境科学研究所 | 一种垃圾自动收集装置及其系统 |
CN111944942B (zh) * | 2020-07-30 | 2022-04-22 | 北京科技大学 | 一种转炉偏心炉底动态出钢控制方法及装置 |
IT202100008438A1 (it) * | 2021-04-15 | 2022-10-15 | Nico Busolini | Apparato e metodo per l'introduzione di sabbia cromite nello scaricatore di una siviera |
CN113549728B (zh) * | 2021-07-13 | 2022-07-22 | 鞍钢股份有限公司 | 一种防止转炉下渣及缩短出钢时间的装置及使用方法 |
CN115007845B (zh) * | 2022-06-15 | 2024-03-15 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种高洁净钢生产过程引流砂填充方法 |
WO2024137597A1 (en) * | 2022-12-21 | 2024-06-27 | Novelis Inc. | Systems and methods for controlling molten metal discharge from a furnace |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE413074B (sv) | 1976-10-25 | 1980-04-14 | Asea Ab | Forfarande for metning av resistiva spenningsfall vid tappstellen fran metallurgiska behallare |
FR2472959A1 (fr) | 1980-01-04 | 1981-07-10 | Daussan & Co | Dispositif pour empecher la solidification du metal dans les orifices de coulee d'un recipient metallurgique |
GB2091396B (en) * | 1981-01-17 | 1985-02-27 | London Scandinavian Metall | Thermally-degradable taphole plug |
JPS5831018A (ja) | 1981-08-15 | 1983-02-23 | Nisshin Steel Co Ltd | 溶湯容器に用いるスラグカツト方法 |
JPS5831019A (ja) | 1981-08-15 | 1983-02-23 | Nisshin Steel Co Ltd | 溶湯容器におけるスラグ検出方法 |
US4399986A (en) * | 1981-12-14 | 1983-08-23 | Collins William J | Device for plugging a taphole in a furnace |
DE3327671C2 (de) * | 1983-07-30 | 1986-06-05 | Mannesmann AG, 4000 Düsseldorf | Einrichtung zum weitestgehend schlackenfreien Abstechen von Metalschmelzen, insbesondere von Stahlschmelzen, aus metallurgischen Gefäßen |
US4715585A (en) | 1985-09-09 | 1987-12-29 | Joseph Simko | Method and apparatus for forming ladle well blocks |
US4828226A (en) * | 1987-10-16 | 1989-05-09 | Foseco International Limited | Tap hole plugs for metallurgical vessels |
NZ280990A (en) | 1995-02-16 | 1997-11-24 | Laporte Group Australia Ltd | Casting ladle device; apparatus and method for inserting sand into the nozzle and base portions of a ladle, elongate tool introduces sand filled container via nozzle orifice |
DE19543058C2 (de) * | 1995-11-10 | 2001-01-04 | Sms Demag Ag | Verfahren und Vorrichtung zum Verschließen einer Abstichöffnung |
-
1998
- 1998-06-12 DE DE19826085A patent/DE19826085C2/de not_active Expired - Fee Related
-
1999
- 1999-06-04 AR ARP990102652A patent/AR019619A1/es not_active Application Discontinuation
- 1999-06-05 TW TW088109364A patent/TW436524B/zh active
- 1999-06-10 AT AT99929165T patent/ATE235565T1/de not_active IP Right Cessation
- 1999-06-10 CA CA002334963A patent/CA2334963A1/en not_active Abandoned
- 1999-06-10 CN CN99807233A patent/CN1305535A/zh active Pending
- 1999-06-10 JP JP2000554887A patent/JP2002518183A/ja not_active Withdrawn
- 1999-06-10 DE DE59904754T patent/DE59904754D1/de not_active Expired - Fee Related
- 1999-06-10 WO PCT/EP1999/003993 patent/WO1999066082A1/de not_active Application Discontinuation
- 1999-06-10 BR BR9911153-5A patent/BR9911153A/pt active Search and Examination
- 1999-06-10 KR KR1020007013914A patent/KR20010052670A/ko not_active Application Discontinuation
- 1999-06-10 CZ CZ20004642A patent/CZ20004642A3/cs unknown
- 1999-06-10 MX MXPA00012305A patent/MXPA00012305A/es unknown
- 1999-06-10 PL PL99344747A patent/PL344747A1/xx unknown
- 1999-06-10 SK SK1878-2000A patent/SK18782000A3/sk unknown
- 1999-06-10 EG EG69799A patent/EG22341A/xx active
- 1999-06-10 HU HU0102223A patent/HUP0102223A3/hu unknown
- 1999-06-10 US US09/719,113 patent/US6471911B1/en not_active Expired - Fee Related
- 1999-06-10 EP EP99929165A patent/EP1097246B1/de not_active Expired - Lifetime
-
2000
- 2000-12-04 ZA ZA200007133A patent/ZA200007133B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9966082A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6471911B1 (en) | 2002-10-29 |
ATE235565T1 (de) | 2003-04-15 |
WO1999066082A1 (de) | 1999-12-23 |
HUP0102223A2 (hu) | 2001-10-28 |
CA2334963A1 (en) | 1999-12-23 |
DE59904754D1 (de) | 2003-04-30 |
PL344747A1 (en) | 2001-11-19 |
SK18782000A3 (sk) | 2001-08-06 |
EP1097246B1 (de) | 2003-03-26 |
AR019619A1 (es) | 2002-02-27 |
HUP0102223A3 (en) | 2001-11-28 |
DE19826085A1 (de) | 1999-12-23 |
ZA200007133B (en) | 2001-07-13 |
JP2002518183A (ja) | 2002-06-25 |
DE19826085C2 (de) | 2000-08-03 |
TW436524B (en) | 2001-05-28 |
EG22341A (en) | 2002-12-31 |
KR20010052670A (ko) | 2001-06-25 |
BR9911153A (pt) | 2003-01-14 |
CZ20004642A3 (cs) | 2001-09-12 |
CN1305535A (zh) | 2001-07-25 |
MXPA00012305A (es) | 2005-07-25 |
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