EP3200941A1 - Device and method for opening a pouring channel of metallurgical vessels - Google Patents
Device and method for opening a pouring channel of metallurgical vesselsInfo
- Publication number
- EP3200941A1 EP3200941A1 EP15775426.8A EP15775426A EP3200941A1 EP 3200941 A1 EP3200941 A1 EP 3200941A1 EP 15775426 A EP15775426 A EP 15775426A EP 3200941 A1 EP3200941 A1 EP 3200941A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- gas
- spout
- supply line
- slide
- 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 description 18
- 239000000155 melt Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 45
- 239000011470 perforated brick Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 5
- 238000005266 casting Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone 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
- B22D41/14—Closures
- B22D41/44—Consumable closure means, i.e. closure means being used only once
- B22D41/46—Refractory plugging masses
- B22D41/465—Unplugging a vessel discharge port
-
- 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
-
- 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
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
-
- 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
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/42—Features relating to gas injection
Definitions
- the invention relates to a device for opening a spout of metallurgical vessels such as ladles or the like, wherein the spout is arranged on the lined bottom of the vessel, with a slide closure having at least two slide plates with a stationary and connected to the vessel slide plate and at least one with this in
- Actuating contact sliding slide plate wherein all slide plates have at least one pouring opening and are mutually displaceable, that for opening and flowing out of the melt, the pouring openings are brought into coincidence and wherein the slide closure has a gas supply line, and a method for operating such a device.
- the prior art also includes examples of constructions in which it has been attempted to operate the plug from the bottom of the container [such as US 2,863,189 or US 3,651,825).
- slide closures for opening the pouring passages of metallurgical vessels have largely prevailed instead of the stopper train.
- two or more in each case at least one opening having metallic or ceramic plates are moved against each other such that the
- Openings can be brought into line to release the spout channel.
- US 5 016 788 shows a slider closure with an opening.
- the invention is based on the object, a
- a stopper is arranged, the size of which exceeds the diameter of the spout channel and which is connected to the lining of the vessel, and that the gas supply line with a pressurized gas can be acted upon so that the plug from its closed position to release the spout channel is pneumatically.
- the object is achieved by pneumatically releasing the stopper closing the discharge channel by opening the discharge channel by pressurizing the gas supply line with a pressurized gas, with the result that the stopper subsequently floats in the melt to its surface.
- the device according to the invention or the method according to the invention permit electronic monitoring of the opening process, since the slide closure can be used as a valve. Due to the replacement of the Schieber Stahles by a plug of refractory material with preferably lower
- Oxygen activity can be reduced in a simple manner also precursor or even avoided and there are no sand deposits in the outlet opening.
- Burning can be reliably prevented.
- a perforated brick is integrated into the refractory lining of the vessel above the slide closure.
- the size of the opening is expediently dimensioned such that a wear sleeve can be arranged therein, through the opening of which the melt can flow off after opening the spout channel.
- a further embodiment of the invention provides that the wear sleeve is funnel-shaped in its upper region. In this way, a uniform outflow of the melt is facilitated.
- the geometry of the bottom of the plug is adapted to the particular shape of the wear sleeve. The shape can be conical, conical, rounded, step-shaped or combined.
- Another teaching of the invention provides that the plug by means of a
- Refractory mortar is set in the wear sleeve.
- the amount of mortar used must be such that it ensures a sufficiently tight connection with the wear sleeve and the plug can nevertheless be "blown free” by the gas supplied.
- a further preferred embodiment of the invention provides that the wear sleeve and the plugs fixed therein are prefabricated as a unit for insertion into a metallurgical vessel.
- Such a prefabricated "set" in which the plug has already been mortared into the inner sleeve creates significant advantages in terms of installation time, since the entire part before each casting as a whole in the opening of the
- a spout is disposed below the slide closure.
- This spout is preferably connected to the lowermost slide plate, for example in a design as a replacement spout with a bayonet lock.
- the gas supply line is arranged in the displaceable slide plate such that is connected to the opening of the stationary slide plate during the opening operation before the release of the spout channel of the outlet of the gas supply line.
- the slide plate effectively acts as a valve for opening or closing the gas supply.
- the gas supply line is connected to a reservoir acting as a gas reservoir. This ensures that the pressure from the reservoir is suddenly relaxed over the gas supply line into the opening of the wear sleeve and in this way the plug from the wear sleeve against the ferrostatic pressure of the melt pneumatically dissolves.
- the gas storage is acted upon to avoid volume surges via a capillary with gas.
- the occurrence of undesirable bumping can thus be countered.
- Sliding valve is preheated.
- FIG. 1 shows the schematic structure of a device according to the invention with a closed pouring channel in vertical section
- FIG. 2 shows the article from FIG. 1 with the plug inserted into the wear sleeve, the device according to the invention with closed pouring channel and open gas supply line in vertical section,
- FIG. 4 shows the article from FIG. 3 with the stopper removed,
- Fig. 5 shows the device according to the invention with opened spout
- Fig. 6 shows the article of Fig. 4 with a acting as a reservoir
- a perforated brick 1 can be seen, which consists of a block
- Refractory material is square or round in cross-section and which is inserted into the bottom of a - not shown - metallurgical vessel and integrated in the wear lining.
- a stone In the opening of the hole 1 is a stone
- Wear sleeve 2 which has a central opening 3, which is widened in a funnel shape in its upper portion 4.
- a stationary slide plate 5 which in turn has an opening 6. Underneath you can see a further slide plate 7, which is also provided with an opening 8. This slide plate 7 is displaceable against the stationary slide plate 5 in the longitudinal direction. Below the lower slide plate 7, a spout 9 is arranged.
- All openings 3, 6 and 8 and the unspecified opening of the spout 9 have the same diameter and form an outlet channel for the melt in the vessel when the slide valve is open.
- the sliding slide plate 7 of the slider closure has a
- a stopper 12 is arranged, the size of the diameter exceeds the spout channel and which is connected by means of a refractory cement 13 with the wear sleeve 2. Furthermore, the gas supply line 10 can be acted upon by a gas under pressure such that the plug 12 can be released pneumatically from its closed position for releasing the outlet channel.
- the sliding slide plate 7 of the slide closure is in
- the plug 12 is released from the wear sleeve 2 (FIG. 4) and floats in the melt.
- the material for the plug 12 and the wear sleeve 2 is preferably an alumina cement.
- a further movement of the displaceable slide plate 7 of the slide closure closes first the outlet 11 of the gas supply line 10 and then sets the outlet channel completely free, so that the melt can flow out of the vessel, as indicated by the arrow in Fig. 5.
- Gas storage 14 is in communication, which in turn is supplied only via a capillary 15 with the pressurized gas. This is done for
- the device according to the invention can be electronically controlled and / or regulated so that reproducible opening conditions can be achieved.
- the illustrated device is only a preferred embodiment and is not intended to limit the scope of the invention in any way.
- the invention can also be used with slide closures from three slide plates, if an improved fit accuracy is desired.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014114301.9A DE102014114301A1 (en) | 2014-10-01 | 2014-10-01 | Apparatus and method for opening a spout channel of metallurgical vessels |
PCT/EP2015/072562 WO2016050847A1 (en) | 2014-10-01 | 2015-09-30 | Device and method for opening a pouring channel of metallurgical vessels |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3200941A1 true EP3200941A1 (en) | 2017-08-09 |
EP3200941B1 EP3200941B1 (en) | 2020-02-26 |
Family
ID=54256739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15775426.8A Active EP3200941B1 (en) | 2014-10-01 | 2015-09-30 | Device and method for opening a pouring channel of metallurgical vessels |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3200941B1 (en) |
DE (1) | DE102014114301A1 (en) |
WO (1) | WO2016050847A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112018002077A5 (en) * | 2017-04-20 | 2020-01-02 | Ksm Castings Group Gmbh | Sliding gate system, casting plant and casting process |
CN113976873B (en) * | 2021-10-13 | 2023-02-17 | 邯郸钢铁集团有限责任公司 | Ladle nozzle bottom pouring flow guiding sand device and process thereof |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863189A (en) | 1958-02-03 | 1958-12-09 | Harold S Beck | Ladle nozzle construction |
US3651825A (en) | 1969-10-24 | 1972-03-28 | Francis P Sury | Stopper plug valve for hot metal ladles |
FR2427866A1 (en) * | 1978-06-05 | 1980-01-04 | Eurdic | Nozzle plug for metallurgical vessels - prevents molten metal from entering nozzle hole until vessel is to be emptied |
FR2533473A1 (en) * | 1982-09-28 | 1984-03-30 | Detalle Richard | METHOD OF CONTROLLING AND OPENING THE CASTING HOLES OF CONTAINERS CONTAINING LIQUID METALS AND THE LIKE, AND DEVICE FOR IMPLEMENTING SAME |
JPS59223156A (en) * | 1983-06-03 | 1984-12-14 | Nippon Steel Corp | Initial hole opening method of vessel for molten metal |
FR2627715B1 (en) | 1988-02-26 | 1991-10-11 | Vesuvius Sa | CASTING NOZZLE FOR ASSISTED OPENING, DEVICE INCORPORATING THE SAME, AND IMPLEMENTATION METHOD |
JPH0381054A (en) * | 1989-08-22 | 1991-04-05 | Nkk Corp | Method for pouring molten metal in ladle |
JPH05253666A (en) * | 1992-01-10 | 1993-10-05 | Toshiba Ceramics Co Ltd | Hole-opening method of slide gate |
SE469969B (en) * | 1992-03-11 | 1993-10-18 | Inst Foer Produktions Och Arbe | Method and apparatus for securing the opening of a valve to a poured metal spout |
DE19620592A1 (en) * | 1996-05-22 | 1997-11-27 | Dislich Margrit | Process for pouring out a molten steel |
JPH10109157A (en) * | 1996-10-01 | 1998-04-28 | Kurosaki Refract Co Ltd | Plugging structure into nozzle hole for adjusting flow rate and method for opening nozzle hole |
-
2014
- 2014-10-01 DE DE102014114301.9A patent/DE102014114301A1/en not_active Withdrawn
-
2015
- 2015-09-30 EP EP15775426.8A patent/EP3200941B1/en active Active
- 2015-09-30 WO PCT/EP2015/072562 patent/WO2016050847A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2016050847A1 (en) | 2016-04-07 |
DE102014114301A1 (en) | 2016-04-07 |
EP3200941B1 (en) | 2020-02-26 |
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