EP0428661A1 - Device for removing worn nozzle bricks or nozzle linings from metallurgical vessels. - Google Patents
Device for removing worn nozzle bricks or nozzle linings from metallurgical vessels.Info
- Publication number
- EP0428661A1 EP0428661A1 EP90908154A EP90908154A EP0428661A1 EP 0428661 A1 EP0428661 A1 EP 0428661A1 EP 90908154 A EP90908154 A EP 90908154A EP 90908154 A EP90908154 A EP 90908154A EP 0428661 A1 EP0428661 A1 EP 0428661A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool carrier
- toothed shaft
- tool
- support
- perforated
- 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
- 239000011449 brick Substances 0.000 title abstract 4
- 230000007480 spreading Effects 0.000 claims abstract description 19
- 238000003892 spreading Methods 0.000 claims abstract description 19
- 239000011470 perforated brick Substances 0.000 claims description 36
- 239000012530 fluid Substances 0.000 claims description 8
- 210000001520 comb Anatomy 0.000 claims 1
- 239000004575 stone Substances 0.000 description 22
- 238000005553 drilling Methods 0.000 description 13
- 238000001816 cooling Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- B22D41/50—Pouring-nozzles
- B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
- B22D1/005—Injection assemblies therefor
-
- 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
- C21C5/44—Refractory linings
- C21C5/445—Lining or repairing the taphole
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D1/1694—Breaking away the lining or removing parts thereof
-
- 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
- F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools
-
- 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
- C21C5/44—Refractory linings
- C21C2005/448—Lining wear indicators
-
- 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
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
Definitions
- the invention relates to a device for removing worn perforated bricks or linings in tap openings of metallurgical vessels with a spreading device which can be inserted into the perforated brick or the tap hole and a drive for pulling off the perforated brick or the lining by means of the spreading device.
- the known device must first be brought into the correct position by hand and fixed on the outside of the hot metallurgical vessel, the manipulation being complex in that when the perforated stone has actually loosened, the device together with the hot perforated brick must be removed manually.
- the device together with the hot perforated brick must be removed manually.
- lo-stones cannot simply be pulled out of their position without damage to the permanent chuck by simply applying pressure or tension in the axial direction.
- AT-PS 383 831 a device for pulling out a gas purging plug from a perforated brick has become known, in which the fact that a simple axial pull is not easily obtained for easy loosening has been taken into account of the perforated stone is suitable.
- Perforated stones are primarily used for tapping openings, for example of converters, and the wear of such perforated stones results from contact with liquid metal during pouring.
- the area of the tap openings is therefore usually provided with a two-layer perforated brick lining, the perforated brick elements to be replaced in each case being connected to the permanent lining by means of binders, ie the second perforated brick lining remaining in the metallurgical vessel over a longer period of time.
- Such perforated bricks in particular flushed out perforated bricks, connected with binders to the permanent feed, generally have to be chiseled out using pneumatic hammers or drilled out using drilling devices.
- Hydraulic pulling devices as can be seen, for example, from AT-PS 386 422, can usually only be regarded as successful if clamping claws reach behind the perforated brick on the inside in order to ensure sufficient tensile forces, and here too there is naturally the risk of damage to the permanent feed cannot be easily excluded.
- the invention now aims to provide a device of the type mentioned at the outset which, without additional manipulations, such as setting up a work platform, allows all work steps to be carried out which are required for the complete replacement of perforated stones, including the installation of a new perforated stone .
- the device according to the invention essentially consists in that the spreading device is arranged on a tool carrier that can be moved in the axial direction on a support, in particular a carriage, and that the tool carrier can be connected to at least one drive.
- the spreading device is arranged on a tool carrier which can be moved in the axial direction on a support, in particular a carriage, provides a simple positioning and a sufficient working path with which different work steps in the installation and removal of perforated stones by simple exchange of tools can be carried out on the tool carrier.
- the spreading device can be used both during the removal of the perforated brick and for the new insertion of a new perforated brick, wherein tools such as those which appear favorable for the complete clearing of the hole can also be fixed on such a spreading device.
- the above-mentioned movability makes it possible, in addition to simply removing worn perforated bricks or linings, to also reposition new perforated bricks in the correct position, the movability of the tool carrier on a support, in particular a mount, offering the possibility that to arrange the entire device on a mobile undercarriage, which considerably simplifies the manipulation when removing and installing perforated bricks.
- the fixing and support on the hot vessel wall is omitted, since the support or the carriage can be moved into the respective position with its own drive and the reaction forces can be absorbed by an undercarriage.
- the Using a tool carrier also allows other methods, such as in particular the cooling of the perforated stone, as preparation for the application, to be carried out via such a tool carrier.
- the tool holder also allows, depending on the type of drive used, to achieve an impact-assisted pulling out or hammering out of perforated stones after the expansion, it also being possible to fix drilling tools on such a tool holder, with which the opening for inserting the new perforated stone can be calibrated.
- a preassembled perforated brick package can be inserted over the tool carrier using the carriage.
- the device according to the invention is advantageously designed such that the tool holder has an axial cavity in which a toothed shaft is rotatably mounted, and that the toothed shaft has teeth of at least two, preferably three, in the tool holder in the radial direction slidably guided expanding jaws. If necessary, a rotating tool movement can be achieved via the rotatably mounted toothed shaft for drilling out or calibrating, the expanding jaws being able to be used directly to fix the calibration tool.
- the design is advantageously made such that the tool carrier is rotatably mounted in the support or on the mount and can be locked in a rotationally fixed manner with respect to the support or mount, whereby the lockability serves to apply the necessary spreading forces to enable the stone to be pulled out.
- Various drives are advantageously connected to the tool carrier and the toothed shaft, it being possible to connect a rotary drive to the toothed shaft in a simple manner and an impact drive, in particular a counterblow hammer, to the tool carrier.
- the impact drive acts on the hollow tool carrier and thus on a correspondingly rigid tubular component, whereas the toothed shaft is used to transmit torques both for pressing the jaws and for rotatingly drilling the opening.
- the design is advantageously made such that the toothed shaft has at least one axial channel, which has nozzles or outflow openings near the free end of the tool holder and a connection for fluid is connected.
- a corresponding sealing closure can be achieved in a simple manner in that the toothed shaft itself has this axial channel for the supply of fluid, wherein the feeding of fluid into the axial channel can be achieved in a particularly simple manner in that the fluid connection on Support or the mount has an annular channel, in which radial bores open to the axial channel of the splined shaft.
- the design is advantageously made such that the toothed shaft is connected to a rotary drive shaft in a rotationally fixed manner and displaceably in the axial direction.
- the design is such that the head part of the tool carrier carrying the expanding jaws is detachably connected via a thread to the part of the tool carrier which can be connected to the impact drive, the head of the tool carrier can be removed detach in a simple manner from the tool carrier, and because of the connection of the toothed shaft to a rotary drive shaft, the toothed shaft can also be removed together with the head, so that other tools can be connected to the rotary drive shaft.
- the design is advantageously made such that the thread for connecting the tool holder to the head part of the tool holder has a core diameter which is larger than the outside diameter of the toothed shaft connected to the rotary drive shaft, whereby all components of the tool carrier and the central drive shaft which are connected to one another in a rotationally locked manner can be removed to the front.
- the device according to the invention can also be used to connect a drill head directly to the tool carrier, the design advantageously being such that a sleeve is screwed onto the thread, which has a round thread or a trapezoid thread on the outside, on which a drill head can be screwed against a stop of the tool holder.
- a sleeve can be screwed onto the tool carrier in a simple manner, the external thread of such a sleeve allowing the simple screwing on of a drill head using the rotary drive of the tool holder.
- the drill head is screwed onto the round or trapezoidal thread up to a stop of the tool carrier, the same direction of rotation naturally having to be maintained for the subsequent drilling in order to prevent the drill head from loosening from the thread. Otherwise, a separate anti-rotation device would have to be provided relative to the tool carrier in the screwed-on position of the drill head.
- the drill head In order to enable screwing onto the external thread of the sleeve, the drill head must be held in a rotationally secure manner while screwing on, the design being advantageously made such that the drill head which can be screwed onto the sleeve has a stop for a separate anti-rotation device, which has a unlockable stop on the support cooperates. The special anti-rotation device must of course be released again for the subsequent drilling operation.
- FIG. 1 shows a side view of a device according to the invention fixed on a movable undercarriage
- 2 shows on an enlarged scale the device according to the invention according to FIG. 1 in a section through the tool carrier
- 3 in a view similar to FIG. 2 on a further enlarged scale, the head and the end of the tool carrier facing away from the head
- 4 and 5 show sections along the line IV-IV of FIG. 3 through an expanding jaw, FIG. 4 representing the retracted position and FIG. 5 the extended position of the expanding jaw
- 6 is a schematic representation of 'the establishment of a Kalibrierwerk- tool in the inventive device
- 7 shows, in a representation analogous to FIG. 6, the fixing of a perforated brick package to be newly set on the device according to the invention
- 8 shows an enlarged illustration of a partial section through a modified embodiment for fixing a drilling tool to the invention - 8th -
- FIG. 9 shows a partial section along the line IX-IX of FIG. 8.
- FIG. 1 denotes an undercarriage which can be moved on a crawler chassis 2, a support or a mount 8 being fixed to an arm 5 which can be raised and lowered via cylinder-piston units 3 and 4.
- a tool carrier 9 which can be moved in the direction of the double arrow 7 by a cylinder-piston unit 6 and which is shown even more clearly in the following figures, and a striking tool designed as a counterblow hammer 10 are attached to the tool carrier 9 the double arrow 11 indicated striking movement.
- the tool carrier for the removal, clearing and installation of perforated stones or tap openings of metallurgical vessels can be positioned according to the requirements relative to a tap hole of a converter, not shown, and the removal of a worn perforated brick or a worn lining as well as calibration and subsequent setting of a new lining without manual manipulation of an extractor attached directly to the metallurgical vessel. It can thus be operated with a single device, as shown in Fig.l, and with a minimum of effort, a large number of tap openings on different converters, and there is no arrangement of corresponding holding devices and pull-out devices in the area of each tap hole become.
- Both the toothed shaft 13 and the rotary drive shaft 14 have an axially extending channel 15, which opens into nozzles or outflow openings 17 in the region of the head 16 of the tool holder and which forms one of radial channels 18 at the end opposite the tool holder head 16 Has connection to an annular space 19 for supplying a fluid.
- the counterblow hammer 10 exerts its impact energy on two half-shells 21 in the region of a closing part 22, the impact stress thus exerted in the sense of the double arrow 11 by the counterblow hammer 10 being transmitted to this outer tube via the transition piece screwed to the outer tube 23 of the tool carrier .
- the tool holder 9 is centered with its outer tube in a guide 24.
- the torque is transmitted to the rotary drive shaft 14 or the toothed shaft 13 by driving by means of a rotary drive, not shown, of a stub 25 in the direction of the arrow 26, the rotary movement via a connecting piece 27 to the rotary drive shaft 14 and via a corresponding one Gearing 28 is subsequently transmitted to the toothed shaft 13, which interacts with the expanding jaws 20.
- the tool holder is made such that the thread 29 for fixing the head 16 to the tube 23 has a larger diameter than the outer diameter of the toothed shaft 13 in the region of the toothing 28.
- a securing device 30 is provided which engages in a perforated disc 31, for example provided with perforations at regular intervals and connected to the tube 23.
- FIGS. The arrangement and the movement of the expanding jaws 20 are shown in more detail in FIGS.
- the expanding jaws 20 mesh via a toothing 31 with an external toothing 32 of the toothed shaft 13, so that when a rotational movement is carried out, the expanding jaws 20 from the position shown in FIG. 4 in the radial direction, as indicated by the arrow 33, into the Extend the position shown.
- the jaws are guided in corresponding recesses of the head 16 of the tool carrier which run in the radial direction and each have a stop 34 which, on the one hand, prevents the expanding jaws 20 from falling out and which, when a rotary movement is continued in the direction shown in FIG .5 position shown or when the jaws are in contact with a perforated brick or an attached tool, the entire tool carrier is rotated.
- the tool carrier 9 is inserted into the opening to be cleared, cooling of the.
- the spreader jaws 20 are extended and spread out in the lining by rotating the toothed shaft 13, whereupon the same is knocked out by a counterblow hammer 10 underneath ⁇ assisted extraction.
- the entire tool carrier which is now spread out in the lining in its head region, together with the counterblow hammer 10 introducing impact energy, are removed from the opening to be cleared via the cylinder-piston unit 6 shown in FIG.
- the tool carrier 9 is now used to place a new perforated brick package 36, with the procedure being such that the new perforated brick package 36, for example fixed on a steel tube 37, is held by means of the expanding jaws 20 and by corresponding means Movement of the entire tool holder is positioned in the tap hole.
- the definition of the new perforated brick package is indicated schematically in FIG. 7.
- the subdivision of the drive shaft for the transmission of a torque or for the rotary drive of the entire tool carrier 9 into a plurality of partial shafts which are connected to one another in a rotationally fixed manner and by the separate fixing of the head 16 of the tool carrier with the expanding jaws 20 on the tube 23 can greatly simplify the assembly of the entire tool carrier and different designs of the head 16 or the expanding jaws 20 can also be used to adapt to different hole openings.
- the procedure is such that after inserting the half shells 21 for transmitting the impact energy and arranging the transition piece 27 on the shaft end 25 and the one end of the rotary drive shaft 14, the tube 23 is screwed to the end part 22.
- the expanding jaws 20 When mounting the head 16 of the tool carrier, the expanding jaws 20 are first inserted into the corresponding recesses in the tool head 16, whereupon the toothed shaft 13 is inserted into the central recess of the head 16, as a result of which the expanding jaws 20 prevent the respective end stops 34 from falling out are secured. Thereafter, the head 16 with the expanding jaws 20 is inserted into the tube 23 and the toothing 28 results in a rotationally fixed connection of the toothed shaft 13 with the rotary drive shaft 14. The head 16 is fixed on the tube 23 by screwing by means of the thread 29.
- the modular structure means that an exchange of the head 16 of the tool carrier 9 can easily react to different diameters of openings to be cleared. Furthermore, the individual parts of the tool holder, which are connected by screw and plug connections, can be quickly replaced. Due to the simple construction of the tool holder 9 in its middle part The pipe 23 and the shaft 14 guided therein in the cavity 12 are easily adapted to different hole block lengths, the outer diameter of the pipe 23 being matched to the smallest possible hole block diameter or diameter of a lining. In addition to using different designs of heads 16, different diameters of the perforated bricks or linings can also be taken into account by simply changing the jaws 20.
- the outer tube 23 is screwed via the sleeve 38 into a drill head 40, which has on its inside a round thread 41 which interacts with the round thread 39 of the sleeve 38 having.
- the cutting edges of the drill head are indicated schematically at 42.
- the drill head 40 is held in the rest position shown in FIG. 8 by a holding device 44 directly adjoining the support 43 which carries the guide 24 and is connected to the mount.
- a slide 46 which can be actuated by a cylinder 45, holds the drill head 40 in contact with the support 43 via a U-shaped end 47.
- the U-shaped, fork-shaped end region 47 of the slide 46 overlaps an essentially 48-shaped region 48 of the drill head 40 and thus secures it against axial displacement and rotational movement.
- the correct position of the drill bit 40 relative to the support 43 or the holding device 44 is further ensured by a tubular extension 49 rigidly connected to the holding device 44.
- the pipe 23 is unscrewed together with the sleeve 38 from the drill bit 40 in a reversed sense, as a result of which the tool carrier 9 with the head 16 is again perfect is separated from the drilling tool 40.
- the mutually cooperating stop surface 50 on the end of the head 16 facing the drill bit serves as also the stop surface 51 at the front end of the drill bit 40.
- correspondingly resilient spindle threads such as a trapezoidal thread, can be provided.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT142789 | 1989-06-09 | ||
AT1427/89 | 1989-06-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0428661A1 true EP0428661A1 (en) | 1991-05-29 |
EP0428661B1 EP0428661B1 (en) | 1993-10-27 |
Family
ID=3513671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90908154A Expired - Lifetime EP0428661B1 (en) | 1989-06-09 | 1990-06-08 | Device for removing worn nozzle bricks or nozzle linings from metallurgical vessels |
Country Status (13)
Country | Link |
---|---|
US (1) | US5133534A (en) |
EP (1) | EP0428661B1 (en) |
JP (1) | JPH04500266A (en) |
KR (1) | KR920700296A (en) |
AT (1) | ATE96465T1 (en) |
AU (1) | AU633929B2 (en) |
BR (1) | BR9006796A (en) |
CA (1) | CA2033185A1 (en) |
DE (1) | DE59003235D1 (en) |
ES (1) | ES2047934T3 (en) |
HU (1) | HU213077B (en) |
WO (1) | WO1990015161A1 (en) |
ZA (1) | ZA904465B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0767022A1 (en) * | 1995-10-02 | 1997-04-09 | Böhler Druckluft und Hydraulik Baugeräte GmbH | Apparatus for changing nozzle bricks |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2685653B1 (en) * | 1991-12-31 | 1994-04-01 | Sollac | DEVICE FOR REPAIRING THE INTERIOR COATING OF A CAST HOLE IN PARTICULAR OF A STEEL CONVERTER. |
AT408964B (en) * | 1997-12-02 | 2002-04-25 | Boehler Pneumatik Internat Gmb | METHOD AND DEVICE FOR REPLACING THE LINING OF A TAP OPENING OF METALLURGICAL VESSELS |
US5925312A (en) * | 1998-06-17 | 1999-07-20 | China Steel Corporation | Push-pull apparatus adapted for assembling and disassembling a tubular body that is to be fitted into a ring retainer on a wall member |
CN1083745C (en) * | 1998-06-19 | 2002-05-01 | 中国钢铁股份有限公司 | Assembling deassembing machine for jogged member |
US6663825B2 (en) | 1999-07-19 | 2003-12-16 | Louis A. Grant, Inc. | Method and apparatus for installing or replacing a furnace tap hole insert |
US6221313B1 (en) * | 1999-11-15 | 2001-04-24 | North American Refractories Co. | Taphole knockout device |
KR20010095093A (en) * | 2000-03-31 | 2001-11-03 | 그랜트 루이스에이 주니어 | Method and apparatus for replacing a tap hole liner in a basic oxygen furnace/QBOP/AOD and all other types of converter vessels |
KR100480359B1 (en) * | 2000-05-16 | 2005-04-06 | 주식회사 포스코 | Apparatus for grouting nozzle brick |
KR100729111B1 (en) * | 2001-05-04 | 2007-06-14 | 주식회사 포스코 | The support crushing apparatus for sleeve of converter tapping hole |
CH708284B1 (en) | 2013-07-11 | 2023-11-15 | Refractory Intellectual Property Gmbh & Co Kg | Method and changing device for automatically changing a pouring sleeve of a sliding closure on a metallurgical vessel. |
CN103801685B (en) * | 2014-02-26 | 2016-01-20 | 北京首钢国际工程技术有限公司 | A kind of ladle bottom blowing air brick detaching device and method of work thereof |
CN106424695B (en) * | 2016-08-26 | 2018-08-14 | 洛阳利尔耐火材料有限公司 | A kind of split type air brick positioning lifting device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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AT295062B (en) * | 1964-11-25 | 1971-11-15 | Benteler Geb Paderwerk | BOTTOM SEAL FOR STEEL CASTING PANS |
FR2409809A1 (en) * | 1977-11-29 | 1979-06-22 | Daussan Henri Jean | MANEUVERING DEVICE FOR CASTING TUBE OR NOZZLE |
US4381102A (en) * | 1979-10-29 | 1983-04-26 | Flo-Con Systems, Inc. | Shroud support and method for shroud engagement with teeming valve |
LU83478A1 (en) * | 1981-07-08 | 1983-04-06 | Wurth Paul Sa | DEVICE FOR COUPLING A DRILLING ROD FROM THE CASTING HOLE OF A TANK OVEN TO THE WORKING TOOL OF A DRILLING MACHINE |
GB8302170D0 (en) * | 1983-01-26 | 1983-03-02 | Mds Furnace Services Ltd | Furnace delining apparatus |
AT386422B (en) * | 1986-11-13 | 1988-08-25 | Voest Alpine Ag | DEVICE FOR REMOVING HOLE STONES INSERTED IN THE TAPPING OPENING OF METALLURGICAL VESSELS |
GB8722156D0 (en) * | 1987-09-21 | 1987-10-28 | Ims Lycrete Ltd | Treatment of metallurgical vessels |
-
1990
- 1990-06-08 EP EP90908154A patent/EP0428661B1/en not_active Expired - Lifetime
- 1990-06-08 AU AU57450/90A patent/AU633929B2/en not_active Ceased
- 1990-06-08 CA CA002033185A patent/CA2033185A1/en not_active Abandoned
- 1990-06-08 US US07/659,291 patent/US5133534A/en not_active Expired - Fee Related
- 1990-06-08 ES ES90908154T patent/ES2047934T3/en not_active Expired - Lifetime
- 1990-06-08 ZA ZA904465A patent/ZA904465B/en unknown
- 1990-06-08 KR KR1019910700157A patent/KR920700296A/en not_active Application Discontinuation
- 1990-06-08 BR BR909006796A patent/BR9006796A/en not_active IP Right Cessation
- 1990-06-08 WO PCT/AT1990/000058 patent/WO1990015161A1/en active IP Right Grant
- 1990-06-08 AT AT90908154T patent/ATE96465T1/en not_active IP Right Cessation
- 1990-06-08 JP JP2508313A patent/JPH04500266A/en active Pending
- 1990-06-08 DE DE90908154T patent/DE59003235D1/en not_active Expired - Lifetime
- 1990-06-08 HU HU905215A patent/HU213077B/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
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See references of WO9015161A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0767022A1 (en) * | 1995-10-02 | 1997-04-09 | Böhler Druckluft und Hydraulik Baugeräte GmbH | Apparatus for changing nozzle bricks |
Also Published As
Publication number | Publication date |
---|---|
CA2033185A1 (en) | 1990-12-10 |
ZA904465B (en) | 1991-04-24 |
HUT60790A (en) | 1992-10-28 |
JPH04500266A (en) | 1992-01-16 |
AU633929B2 (en) | 1993-02-11 |
BR9006796A (en) | 1991-08-06 |
AU5745090A (en) | 1991-01-07 |
HU213077B (en) | 1997-02-28 |
DE59003235D1 (en) | 1993-12-02 |
ATE96465T1 (en) | 1993-11-15 |
ES2047934T3 (en) | 1994-03-01 |
US5133534A (en) | 1992-07-28 |
KR920700296A (en) | 1992-02-19 |
HU905215D0 (en) | 1992-02-28 |
WO1990015161A1 (en) | 1990-12-13 |
EP0428661B1 (en) | 1993-10-27 |
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