EP3856435A1 - Schlackenstopper - Google Patents
SchlackenstopperInfo
- Publication number
- EP3856435A1 EP3856435A1 EP19778937.3A EP19778937A EP3856435A1 EP 3856435 A1 EP3856435 A1 EP 3856435A1 EP 19778937 A EP19778937 A EP 19778937A EP 3856435 A1 EP3856435 A1 EP 3856435A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slag stopper
- arm
- actuator
- drive
- slag
- 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
Classifications
-
- 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
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
-
- 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
-
- 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
-
- 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
Definitions
- the invention relates to a slag stopper for closing a tap hole of a metallurgical vessel for separating a liquid metal and a slag, the slag stopper having an arm pivotable about an axis, at one end of which a closure body for closing the tap hole of the metallurgical vessel is arranged, and wherein the Arm is connected to a drive that can cause a pivoting movement about the axis.
- a generic slag stopper is used in particular in steelworks to separate liquid metal and slag by closing the tap opening of a metallurgical vessel. In this way, an arm with a closure piece is pivoted to the opening of the metallurgical vessel by means of a rotary movement.
- a disadvantage of the previously known solution is that a drive is set in order to reach the required end position positions of the swivel arm (work and dwell position), in which a first shaft is first rotated by a linear drive.
- a first shaft is first rotated by a linear drive.
- a second shaft is driven by a mechanical transmission (in the form of spur gear teeth) in such a way that a larger swivel angle can be achieved with it; the swivel arm is attached to this second shaft.
- the drive comprises: a shaft that is fixedly connected to the arm, a gearwheel that is connected to the shaft in a rotationally fixed manner, and a linear actuator that can cause a linear displacement movement of at least one actuator component, the at least one actuator component having a toothed rack that is connected to the gearwheel in Intervention stands.
- the linear actuator preferably comprises two actuator components, the two actuator components being able to move linearly in opposite directions to one another and the two actuator components each having a rack.
- Limiting means are preferably provided with which the pivoting movement of the arm can be limited. Accordingly, a limitation and the possibility of fine adjustment of defined end positions of the working and rest positions are provided, which can be done, for example, by a centrally rotating cam in a limitation module.
- linear actuator with which the arm can be pivoted.
- the linear actuator can be designed as a pneumatic piston-cylinder unit.
- other solutions are also possible.
- the shaft is preferably supported by bearings that have integrated solid lubricant. Fliernach can achieve a maintenance-free and fail-safe design of the bearing points.
- the drive can be arranged in a housing, the housing being fastened to a surrounding component via spacers, in particular in the form of spacers. This advantageously realizes a thermal decoupling of the drive from external temperature fluctuations by means of an outer protective housing, which is favored by the use of said spacers with a minimized contact area between the drive and the housing and the use of materials with low thermal conductivity.
- the housing is preferably provided with flat insulation elements
- the housing can also be provided with cooling elements, in particular in the form of cooling ring lines.
- the inner chamber of the drive housing can be tempered to the operating temperature of the rotary actuator by means of insulation plates and a flow-oriented and optimized cooling air duct through a cooling ring line.
- the drive can be connected to an energy store, in particular a pressure store.
- an energy store in particular a pressure store.
- the use of a pressure accumulator for the actuation of the drive ensures independent operation of the drive in the event of fluctuations in the power grid; this also provides security against failure.
- swivel angle ranges of up to 180 ° of the slag stopper arm can now be driven directly onto the drive shaft without any additional components.
- the arm is swiveled by up to 180 ° with only a single swivel drive or rotary drive and a single shaft, without the need for further components for increasing or reducing the rotary movement.
- the drive can be actuated by various energy sources (spring force, compressed air or gas pressure) with a double-acting drive unit surface, whereby faster reaction times and high forces or moments are possible; at the same time, there is a compact design.
- energy sources spring force, compressed air or gas pressure
- the slag stopper can get a compact and mass-minimized housing (outer protective housing) due to the small number of components. There are numerous placement options around the tapping piece of the converter vessel.
- a device for assembling and disassembling the slag stopper on the converter vessel is also preferably used.
- FIG. 1 is a perspective view of a slag stopper
- FIG. 3 shows the working position of the slag stopper (closed tap hole) in the illustration according to FIG. 2
- FIG. 4 shows a mounting device for the slag stopper
- Fig. 5 is a perspective view of part of a metallurgical vessel on which an assembly and maintenance stage for assembling the slag stopper is arranged.
- FIG. 1 shows a slag stopper 1 with which a tap hole 2 (see FIG. 5) of a metallurgical vessel 3 can be closed.
- the slag stopper 1 has an arm 4 which is arranged pivotably about an axis a.
- a closure body 5 is arranged, which is designed to cooperate with the tap hole 2.
- a drive 6 is provided, which in the exemplary embodiment is designed as a pneumatically actuated element.
- the drive 6 has a shaft whose axis corresponds to the pivot axis a.
- the arm 4 is fixed to the shaft 7.
- the drive 6 comprises a linear actuator 9, which in the exemplary embodiment comprises two actuator components 10 and 11, each of which can perform a linear displacement movement bi or b 2 (see in each case the lower sub-figures in Figures 2 and 3) when the linear actuator 9 is actuated.
- Racks 12 and 13 are respectively arranged on the two actuator components 10 and 11 or are incorporated into said parts.
- the two racks 12 and 13 mesh with a gear 8, which is arranged in a rotationally fixed manner on the shaft 7.
- limiting means 14 and 15 The pivoting movement is limited in both directions of rotation by limiting means 14 and 15, different configurations being possible for said limiting means.
- the shaft 7 is supported by bearings 16.
- the drive 6 is located in a housing 17 which is connected to surrounding components via spacers 18; the spacers are preferably made of a material with low thermal conductivity, so that the drive is thermally decoupled from the surrounding components.
- insulation elements 19 thermal insulation boards
- Cooling elements 20 in the form of ring cooling lines serve to cool the drive 6.
- FIG. 4 shows an assembly device 21 for the assembly or disassembly of the slag stopper 1 shown in FIG. 5 on the metallurgical vessel 3 or the situation during the assembly of the slag stopper 1.
- the assembly device 21 shown in FIG. 4 allows the use of a steelworks standard equipment in the form of a forklift with forks during assembly or disassembly, the assembly device 21 having fork receptacles 22 for the forks of the forklift.
- the mounting device 21 has two receiving bearings 23, into which the pins 24 can be hung, which are arranged on the side of the slag stopper 1 (see FIG. 1). Furthermore, the mounting device 21 has positioning supports 25, which ensure that the slag stopper 1 bears against the device 21 in a defined manner.
- FIG. 5 shows an assembly and maintenance platform 26 which allows safe access to the slag stopper 1, namely by bridging the opening between the converter vessel 3 and the steelworks platform 27 by supporting the assembly platform 26 on the support ring 28 and the steelworks platform 27.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018216285.9A DE102018216285A1 (de) | 2018-09-25 | 2018-09-25 | Schlackenstopper |
| PCT/EP2019/075639 WO2020064691A1 (de) | 2018-09-25 | 2019-09-24 | Schlackenstopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3856435A1 true EP3856435A1 (de) | 2021-08-04 |
| EP3856435B1 EP3856435B1 (de) | 2024-04-17 |
Family
ID=68072382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19778937.3A Active EP3856435B1 (de) | 2018-09-25 | 2019-09-24 | Schlackenstopper |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3856435B1 (de) |
| CN (1) | CN112770856A (de) |
| DE (1) | DE102018216285A1 (de) |
| WO (1) | WO2020064691A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115927786B (zh) * | 2022-10-28 | 2025-05-16 | 河南熔金高温材料股份有限公司 | 一种支架直连型自动风冷转炉滑板挡渣装置 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT350090B (de) | 1975-12-17 | 1979-05-10 | Voest Ag | Verfahren und einrichtung zum verschliessen des stichloches eines metallurgischen gefaesses |
| AT357183B (de) * | 1978-10-04 | 1980-06-25 | Voest Alpine Ag | Einrichtung zum verschliessen des stichloches eines metallurgischen gefaesses |
| AT364883B (de) * | 1980-06-03 | 1981-11-25 | Voest Alpine Ag | Einrichtung an einem stahlwerkskonverter zur nachverbrennung kohlenmonoxidhaeltiger gase |
| AT381583B (de) * | 1984-06-01 | 1986-11-10 | Voest Alpine Ag | Kippbares metallurgisches gefaess |
| KR200151310Y1 (ko) | 1995-12-21 | 1999-07-15 | 이구택 | 전로의 슬래그 스토퍼의 냉각장치 |
| AT407399B (de) | 1999-05-21 | 2001-02-26 | Voest Alpine Ind Anlagen | Verfahren zum verschliessen und öffnen eines stichloches eines metallurgischen gefässes |
| AT408965B (de) | 2000-01-27 | 2002-04-25 | Voest Alpine Ind Anlagen | Einrichtung zum verschliessen eines abstichloches eines metallurgischen gefässes |
| KR20030006148A (ko) | 2001-07-11 | 2003-01-23 | 주식회사 포스코 | 전로 슬라그 스토퍼를 이용한 전로 조업방법 |
| US8206642B2 (en) * | 2010-03-16 | 2012-06-26 | Process Technology International | Pivoting slag door |
| CN203451554U (zh) * | 2013-07-26 | 2014-02-26 | 上海梅山钢铁股份有限公司 | 脱硫铁水罐倾翻车 |
| CN105316447B (zh) * | 2015-11-26 | 2017-11-07 | 辽宁科技大学 | 一种转炉挡渣塞的定位方法及其定位装置 |
| CN207154715U (zh) * | 2017-09-07 | 2018-03-30 | 洛阳新远大冶金成套设备有限公司 | 堵盖装置及铝液除气设备 |
-
2018
- 2018-09-25 DE DE102018216285.9A patent/DE102018216285A1/de not_active Withdrawn
-
2019
- 2019-09-24 CN CN201980062776.7A patent/CN112770856A/zh active Pending
- 2019-09-24 WO PCT/EP2019/075639 patent/WO2020064691A1/de not_active Ceased
- 2019-09-24 EP EP19778937.3A patent/EP3856435B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018216285A1 (de) | 2020-03-26 |
| EP3856435B1 (de) | 2024-04-17 |
| WO2020064691A1 (de) | 2020-04-02 |
| CN112770856A (zh) | 2021-05-07 |
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