EP1292714A1 - Rüsselreinigungsvorrichtung für vakuumentgasungsgefässe - Google Patents
Rüsselreinigungsvorrichtung für vakuumentgasungsgefässeInfo
- Publication number
- EP1292714A1 EP1292714A1 EP01960285A EP01960285A EP1292714A1 EP 1292714 A1 EP1292714 A1 EP 1292714A1 EP 01960285 A EP01960285 A EP 01960285A EP 01960285 A EP01960285 A EP 01960285A EP 1292714 A1 EP1292714 A1 EP 1292714A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning device
- teeth
- proboscis
- vacuum degassing
- immersion pipe
- 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.)
- Withdrawn
Links
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
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- 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
- C21C5/4693—Skull removal; Cleaning of the converter mouth
Definitions
- the invention relates to a cleaning device for proboscis of vacuum degassing vessels and claims the priority of German patent application 100 28 172.9 and German utility model application 200 22 375.5, to which reference is made in terms of content.
- a vacuum vessel with two fireproof immersion tubes (hereinafter referred to as the trunk) is immersed in a pan melt.
- deposits (bears) form on the proboscis, particularly in the area of the slag layer, which increase in size from treatment to treatment, which over time makes it difficult or impossible to immerse the proboscis in the pan as well as the temperature measurement and sampling.
- impurities from the batches get into the melt.
- the immersion also leads to an additional bath level increase due to the additional displacement of the melt by the bears on the proboscis, which can lead to overflow of steel and slag from the pan.
- BESTATIGUNGSKOPIE be lowered to follow the falling bathroom mirror.
- the vacuum vessel must inevitably follow the rising bath level again, ie, be raised, before the proboscis can be pulled out of the melt during the return to atmospheric pressure after the vacuum treatment. This carries the risk of incorrect operation. Regardless of this, in practice it is necessary to clean the proboscis regularly or to clear the roots.
- the proboscis can be cleaned with a hydraulic or pneumatic hammer, with the aid of a hydraulically driven arm with attached tip or pliers to loosen the attachments, or by clamping a rod between the attachments and the working platform, by lowering the vessel or lifting the platform a leverage is generated to loosen the approaches.
- the object of the invention is therefore to create an improved cleaning device for proboscis of vacuum vessels.
- the object is achieved by a cleaning device whose teeth are at a distance of 60 to 150 mm, preferably 110 mm, from the surface of the trunk.
- the proboscis according to the invention preferably has fixed teeth with a mutual distance between the teeth on the circumference of 280 to 450 mm. A distance of approximately 360 mm is particularly advantageous.
- a stabilizing ring that runs around the outside of the teeth can be non-positively connected to the teeth.
- the force to bear repelling the roots per tooth can be around 36 kN.
- no teeth are arranged in the area between the two proboscises, the teeth are therefore arranged in the form of two mutually opposite sides of open circles.
- the teeth are preferably arranged at an angle of attack of 5 to 30 ° with respect to the vertical for optimal force introduction.
- the proboscis can also be moved vertically with the ladle lifting hydraulics or its own hydraulics (preferably in ladle lifting systems) or not vertically (preferably in vascular lifting systems).
- the proboscis scratch can also be mounted on a frame that can be moved using adjusting screws to compensate for inaccuracies in assembly. and the vertical axes of the proboscis and the scraper circles are easily aligned.
- stage areas around the slag scraper can be pivoted vertically, which is advantageously done mechanically in systems in which the proboscis scraper is moved vertically; the repelled approaches can then fall through the openings created when folding down into a collecting funnel which is arranged below the scratch and from there then get into a container for removal or also into a pit between the rails of the ladle transport trolleys.
- the proboscis scratch can, for example, be arranged on a proboscis trolley in order to make it possible to remove the deposits when the proboscis is hot.
- the trolley can be provided with its own drive or can be attached to a ladle transport trolley.
- the lugs can be loosened on a scratch platform, which is brought under the proboscis after the vacuum treatment or over which the vacuum vessel with the proboscis is moved.
- Fig. 1 shows a stage with a cleaning device according to the invention
- Fig. 2 shows a section along the line II-II in Fig. 1 with the trunk of an otherwise not shown vacuum vessel.
- the cleaning device consists of a liftable and lowerable stage 1 with two proboscis from toothed rings 2, 3 which merge into one another.
- the teeth 4, 5 of the two ring gears 2, 3 each surround one of the two proboscises 6, 7 in a circle of an otherwise not shown vacuum vessel.
- the teeth 5 consist of a shaft 8 and an exchangeable tip 9 which is fixed on the shaft 8 with the aid of a pin 10.
- a stabilizing ring 11, 12 mounted on the stage 1 surrounds the shafts 8 of the teeth 4, 5.
- the teeth are arranged so that they surround the respective trunk 7 with a distance of 280 to 450 mm, preferably 360 mm. This distance leads to a considerable leverage effect on the approaches (not shown) located on the trunk, but also to a strong bending load on the teeth, the horizontal component of which is absorbed by the stabilizing rings 11, 12.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Cleaning In General (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000128172 DE10028172A1 (de) | 2000-06-09 | 2000-06-09 | Rüsselreinigungseinrichtung für Vakuumentgasungsanlagen |
DE20022375U DE20022375U1 (de) | 2000-06-09 | 2000-06-09 | Rüsselreinigungseinrichtung für Vakuumentgasungsanlagen |
DE10028172 | 2000-06-09 | ||
DE20022375U | 2000-06-09 | ||
PCT/EP2001/006508 WO2001094649A1 (de) | 2000-06-09 | 2001-06-08 | Rüsselreinigungsvorrichtung für vakuumentgasungsgefässe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1292714A1 true EP1292714A1 (de) | 2003-03-19 |
Family
ID=26005990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01960285A Withdrawn EP1292714A1 (de) | 2000-06-09 | 2001-06-08 | Rüsselreinigungsvorrichtung für vakuumentgasungsgefässe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1292714A1 (de) |
AU (1) | AU2001281818A1 (de) |
DE (1) | DE20022375U1 (de) |
WO (1) | WO2001094649A1 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0645820B2 (ja) * | 1989-12-28 | 1994-06-15 | 黒崎窯業株式会社 | 真空脱ガス設備の溶鋼吸上管の除滓装置 |
JPH09263822A (ja) * | 1996-03-27 | 1997-10-07 | Nippon Steel Corp | 真空脱ガス装置の浸漬管付着スラグ除去装置および除去方法 |
FR2756200B1 (fr) * | 1996-11-22 | 1999-04-02 | Lorraine Laminage | Installation de decrassage des plongeurs d'une cuve de traitement sous vide de l'acier liquide |
-
2000
- 2000-06-09 DE DE20022375U patent/DE20022375U1/de not_active Expired - Lifetime
-
2001
- 2001-06-08 AU AU2001281818A patent/AU2001281818A1/en not_active Abandoned
- 2001-06-08 EP EP01960285A patent/EP1292714A1/de not_active Withdrawn
- 2001-06-08 WO PCT/EP2001/006508 patent/WO2001094649A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0194649A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2001281818A1 (en) | 2001-12-17 |
WO2001094649A1 (de) | 2001-12-13 |
DE20022375U1 (de) | 2001-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20030108 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17Q | First examination report despatched |
Effective date: 20030605 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20040615 |