WO2006042597A1 - Abstichrohr für ein metallurgisches schmelzgefäss - Google Patents
Abstichrohr für ein metallurgisches schmelzgefäss Download PDFInfo
- Publication number
- WO2006042597A1 WO2006042597A1 PCT/EP2005/009957 EP2005009957W WO2006042597A1 WO 2006042597 A1 WO2006042597 A1 WO 2006042597A1 EP 2005009957 W EP2005009957 W EP 2005009957W WO 2006042597 A1 WO2006042597 A1 WO 2006042597A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- tapping
- tapping tube
- section
- tube
- Prior art date
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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1518—Tapholes
-
- 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
-
- 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
-
- 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
-
- 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
Definitions
- the invention relates to a tapping tube for a metallurgical Schmelz ⁇ vessel.
- a metallurgical melting vessel is understood to mean an aggregate in which a metallurgical melt is produced, treated and / or transported, for example a converter or an electric arc furnace.
- a molten metal in the melting vessel is passed through the tapping tube in a downstream unit.
- the steel is fed from the converter via a ladle to a downstream continuous casting plant.
- the molten metal should be transported as possible without contamination. For example, contact with the ambient atmosphere (oxygen, nitrogen) should be avoided, as should slagging.
- a converter tap which - in the axial direction - is composed of a plurality of interconnected refractory blocks or disks. With the same geometry, the converter tap can also be monolithic.
- Figure 1 shows this prior art, which has long been proven in the market.
- the central passage for the molten metal may be conical, cylindrical or stepped from the inlet end to the outlet end. In any case, when passing the molten metal, erosions very quickly occur at the boundary wall of the passage channel, whose cross-section thus constantly increases during operation, as shown schematically in FIG.
- the object of the invention is to provide a tapping tube which, while minimizing possible downtimes, enables as far as possible equal tapping times during the service life of the tapping tube.
- the core idea of the invention is to functionally divide the tapping tube into two parts, namely a first part, which may be formed according to the prior art, and a second part, which can easily be exchanged (interchangeable) with the first part, namely under training a complete tapping pipe.
- the invention is based on the finding that the strömungs ⁇ technically relevant portion of the tapping pipe is the outlet end.
- the cross section at the outlet end determines the amount of discharge and thus the flow time (tapping time) of the molten metal.
- This part lies "outside", namely furthest away from the molten bath in the metallurgical vessel, so that in this case the relatively lowest temperatures prevail anyway, which facilitates the changeability of a corresponding tapping part.
- FIG. 3 The basic idea of the invention is illustrated in FIG. 3 on the basis of FIGS. 1 and 2. It can be seen that the upper part of the Abstiches, starting from the inlet end E, has been adopted unchanged from the prior art, wherein in Figure 3 a on erumbleer ⁇ 2 of the state of wear is shown.
- an outlet-side end A of the tapping pipe is designed as a separate, aus grill ⁇ Bares component B, which is sealingly connected to the adjoining part of the tapping tube, as will be shown in detail yet.
- the replaceable component B which essentially has a cylindrical shape, has a passage D 1 whose cross-sectional area corresponds to a desired cross-section of the non-worn passage D.
- the invention then comprises a tapping tube for a metallurgical melting vessel having the following features:
- the tapping pipe has a passage for molten metal, which connects an inlet end to an outlet end,
- the tapping pipe comprises a cylin derförmigen end portion, which, adjacent to the passageway, designed as a separate cylindrical component, the component is at its, the outlet end of the tapping um ⁇ comprehensive first end for stationary, but releasable mounting of the component in formed a holding device, the component has at its second end a, in the direction of the inlet end facing end face, which bears in a holding position of the component sealingly against an axially adjacent portion of the Abstich ⁇ tube.
- Cylindrical includes cross sections with circular cross section, but also all other cross sectional geometries. This applies to both inner and outer cross sections of the pipe.
- the tube In the axial direction (flow direction of the melt), the tube may be cylindrical or conical. Other contours are possible, for example, a stepped surface.
- inner and outer cross sections can be polygonal or oval. Any polygon shape is possible.
- the cylindrical component can have any inner cross section.
- the passageway in the region of the component has a round or oval inner cross section.
- the cross-sectional area should correspond to the desired cross-sectional area with regard to the desired mass flow and the desired tapping time.
- the passageway in the region of the component can have a constant internal cross-section over the height of the component, but it can also be slightly tapered or stepped at the outlet end.
- the cylindrical component can be inserted into an outer cylindrical end section of the tapping tube.
- the Tapping tube receives in this way its desired length unchanged.
- an exchangeable sleeve is arranged interchangeable.
- the attachment of the replaceable component on or in the other part of the tapping tube can be done in different ways.
- One possibility is to form the component circumferentially with an external thread, which cooperates with a corresponding internal thread.
- This internal thread can be arranged as a separate component in the region of the outlet end of the tapping tube on the associated metallurgical vessel. However, it may also be part of the outlet end of the tapping pipe, in particular in the case of the mentioned component used.
- the cylindrical exchange component on its outer side or at the outlet end stops for a pressure medium, which can act in the direction of the inlet end to the component.
- the pressure means may for example be springs which are arranged on a holding device, which in turn is fastened to the outside of the metallurgical vessel.
- the decisive factor is that the replacement component is held under pressure in the direction of the inlet of the tapping pipe in such a way that a tight connection with respect to the remaining part of the tapping pipe results.
- the corresponding holding means are therefore arranged in particular on the free lower end face or on the outer circumference of the component.
- the tightness can be improved if the end face has a surface profiling on the fitting-side end of the component, ie is not smooth.
- a profiling can consist of individual, discrete nubs or webs.
- the profiling can also consist of concentric or spirally arranged web-like elevations.
- the surface of the tapping tube can be formed, against which the end face of the interchangeable component is pressed.
- Another alternative provides to place a seal between the corresponding surfaces of tapping tube and component.
- the corresponding surface sections of the refractory material are more or less planar, it is advisable to form the generally annular seal with surface profilings, as described above.
- These profiles allow a certain elasticity and thus deformability when the component is connected to the remaining portion of the tapping tube.
- a gasket material for example, graphite is suitable because it also has a corresponding temperature resistance.
- the seal can also be provided as a sealant, for example as an emulsion of flake graphite and oil.
- the abutment surface (end face) of said component on the ceramic section of the remaining tapping tube can be flat (in particular perpendicular to the central longitudinal axis of the tapping tube) or domed, in particular domed, that is to say curved in the direction of the inlet end.
- the component can simultaneously have a temporary barrier for so-called feed slag.
- This feed slag flows when tilting the associated converter in the tapping pipe (and subsequently in the downstream metallurgical vessel), which is undesirable.
- the invention therefore provides for the component to be formed with a blocking element which temporarily fills the inner cross-section (flow channel).
- "temporary" means that the blocking effect only has to be very short, for example a few seconds, before metal melt enters the tapping channel during tapping.
- Such a blocking element can be, for example, a thin metal plate, or a type of cup, which are placed in the flow channel of the component, for example by means of spring arms (claws) on its peripheral surface.
- the length of the component is basically arbitrary.
- the decisive factor is - as stated - the outlet cross section at the outlet end.
- the service life of the component can be increased if its length corresponds to at least 1.5 times the smallest inner diameter, wherein a ratio of 1.5 to 3 is generally sufficient. This length is too important to ensure the desired characteristic of the outgoing Schmelz ⁇ flow. In particular, a uniformly exiting melt stream is achieved.
- the tapping pipe described allows for the most part constant tapping times and thus an improved availability of the smelting unit.
- the change of the end-side component can be automated. Since the exchange takes place from the outside, it is easy and short to perform. The installation takes place in such a way that the tapping pipe at the outlet end terminates more or less flush with the outer wall of the metallurgical vessel.
- the end-side component can be formed from the same material as the rest of the tapping tube. Both sections can also be formed from different varieties. In this case, the component can be made of a particularly wear-resistant material quality.
- FIG. 4 is a partial sectional view of an end portion of a tapping tube; 5 shows a plan view and a section through the surface 24 of the exchangeable component of the tapping tube according to FIG. 4, FIG.
- FIG. 6 a partial sectional view of a further embodiment of a tapping tube, wherein only the lower part is shown.
- FIG. 4 shows the lower part of a tapping tube 10, which is assembled in a refractory lining of a converter 12, which has a metal jacket 14 on the outside. All this is state of the art and therefore will not be further described.
- a metal ring 22 is glued in the wall portion of the End ⁇ 18, which has an internal thread.
- This internal thread cooperates with an external thread, which is formed circumferentially on a mounting part B.
- the component B is cylindrical.
- the outer diameter of the component B corresponds to the inner diameter of the recess 20.
- the component B can be placed along the threads described in the recess 20 until it is flush with the end portion 1 8 and the metal shell 14 at the outlet end 16.
- the component B has a central passage D channel with a circular cross section, which corresponds to a desired cross-section of the passage D at the outlet end of the tapping tube 10.
- a graphite seal 28 is arranged between an upper end face 24 of the component B and the corresponding stop face 26 of the section 18, which was compressed when screwing the component B into the recess 20, the size in the drawing the seal 28 is exaggerated.
- the tapping tube 10 is worn, as shown in FIGS. 2, 3, whereby the component B also wears, only the component B is exchanged so that essentially an arrangement results, as shown in FIG. In this case, the component B is unscrewed from the recess 20 and screwed a new component with a defined passage D l.
- FIG. 5 shows, in a section (bottom) and in a plan view (top), the formation of the end face 24 of the component B with concentric, rib-like ribs 24r, wherein the seal 28 can advantageously press into the valleys formed between the ribs 24r and so that the sealing effect is optimized.
- the component B is not arranged in a recess 20 of the end section 18 of the tapping tube 10.
- the upper part of the tapping tube 10 is shortened by the length (height) of the component B, so that the abutment surface 26 for the component B extends over the entire wall thickness of the tube 10.
- the component B with a central passage D l with circular cross-section has on the outside a truncated cone shape and is arranged in a korrespon ⁇ dierenden metal sleeve 30 having a radially encircling web 32.
- a korrespon ⁇ dierenden metal sleeve 30 having a radially encircling web 32.
- the springs 36 are mounted on arms 38 which are hinged to the metal shell 14 of the metallurgical vessel (not shown in detail). Projecting parts thus form a holding device for the component B.
- a seal can be arranged, for example, a graphite foil.
- the component B can be exchanged in the short term by the holding device is released.
- the new component B (with through-channel D l) is then fixed again with the holding device and then secures an outflow cross-section with a defined nominal diameter for the following tapping batches.
- FIG. 6 also shows diagrammatically a cup-shaped obturator 40, which consists of a thin sheet whose peripheral edge rests on the upper end face 24 of the component B when it is pressed against the corresponding stop face 26.
- the locking member 40 Prevents slag from entering through the flow channel D into a downstream melting vessel during casting. It can only penetrate a small amount of slag in the passage D channel to Sperr ⁇ organ 40. Once the feed slag is passed by the tilting of the melting vessel at the inlet end of the tapping tube 10, there is now only melt above the inlet end. Now, the slag located in the inlet-side part of the tapping pipe 10 can either float up or, after the obturator 40 has melted, flow out of this part of the slag. Subsequently, only melt flows through the tapping 10th
- the blocking element shown represents a possible structural solution. It is crucial that with the change of the component B at the same time a blocking member of the same functionality can be installed, which then causes a temporary shut-off of the flow channel D.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (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)
- Manufacture And Refinement Of Metals (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Tubes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002563472A CA2563472C (en) | 2004-10-18 | 2005-09-16 | Tapping tube for a metallurgical fusion pot |
JP2007536013A JP2008516772A (ja) | 2004-10-18 | 2005-09-16 | 冶金学的溶融鍋のための湯出しチューブ |
BRPI0513000-0A BRPI0513000A (pt) | 2004-10-18 | 2005-09-16 | tubo de vazamento para um pote de fusão metalúrgica |
EP05783886A EP1805330A1 (de) | 2004-10-18 | 2005-09-16 | Abstichrohr für ein metallurgisches schmelzgefäss |
US11/568,181 US20070216073A1 (en) | 2004-10-18 | 2005-09-16 | Tapping Tube for a Metallurgical Fusion Pot |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004050701A DE102004050701B3 (de) | 2004-10-18 | 2004-10-18 | Abstichrohr für ein metallurgisches Schmelzgefäß |
DE102004050701.5 | 2004-10-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006042597A1 true WO2006042597A1 (de) | 2006-04-27 |
Family
ID=35240852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/009957 WO2006042597A1 (de) | 2004-10-18 | 2005-09-16 | Abstichrohr für ein metallurgisches schmelzgefäss |
Country Status (10)
Country | Link |
---|---|
US (1) | US20070216073A1 (de) |
EP (1) | EP1805330A1 (de) |
JP (1) | JP2008516772A (de) |
KR (1) | KR20070068304A (de) |
CN (1) | CN1973054A (de) |
AR (1) | AR051219A1 (de) |
BR (1) | BRPI0513000A (de) |
CA (1) | CA2563472C (de) |
DE (1) | DE102004050701B3 (de) |
WO (1) | WO2006042597A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004027440B3 (de) * | 2004-06-04 | 2005-06-16 | Refractory Intellectual Property Gmbh & Co. Kg | Abstichrohr |
DE102010056117B3 (de) * | 2010-12-23 | 2012-04-19 | Zetko Maschinenbau Gmbh | Konverter für Metallschmelze mit einer in einen Abstichkanal eingesetzten Hülse sowie eine Vorrichtung zum Setzen der Hülse und ein Verfahren zum Ersatz der Hülse |
EP3037558A1 (de) | 2014-12-22 | 2016-06-29 | Refractory Intellectual Property GmbH & Co. KG | Vorrichtung zum Einsetzen eines feuerfesten Blocks in eine Abstichlochstruktur eines metallurgischen Gefäßes, insbesondere eines Sauerstoffblaskonverters, und Verfahren zur automatischen Zuführung des feuerfesten Materials |
CN110195982B (zh) * | 2019-06-27 | 2024-05-10 | 米易锦秀机械制造有限公司 | 两段式可拆卸堵头 |
CN110174001A (zh) * | 2019-06-27 | 2019-08-27 | 米易锦秀机械制造有限公司 | 三段式可拆卸堵头 |
KR20210154542A (ko) | 2020-06-12 | 2021-12-21 | 안재훈 | 체지방 측정 웨어러블 디바이스를 기반으로 한 맞춤 도시락 제공 서비스 |
CN114807502B (zh) * | 2021-01-28 | 2023-12-12 | 宝山钢铁股份有限公司 | 一种环缝型旋流转炉底吹元件及应用方法 |
EP4311994A1 (de) | 2022-07-26 | 2024-01-31 | Primetals Technologies Austria GmbH | Metallurgisches gefäss mit einer abstichvorrichtung zum kontrollierten abstechen von flüssigem metall |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0120695B1 (de) * | 1983-03-24 | 1987-09-30 | Usx Engineers And Consultants, Inc. | Flachschieber und Verfahren zur Betätigung |
EP0375897A1 (de) * | 1988-12-23 | 1990-07-04 | Didier-Werke Ag | Abstichkanal für metallurgische Gefässe |
WO2005024069A2 (de) * | 2003-08-29 | 2005-03-17 | Stopinc Aktiengesellschaft | Abstichvorrichtung für ein schmelzgefäss, insbesondere für einen konverter |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2967339A (en) * | 1958-09-26 | 1961-01-10 | Lukens Steel Co | Ladle |
JPS5039049B1 (de) * | 1970-08-26 | 1975-12-13 | ||
JPS52136917A (en) * | 1976-05-11 | 1977-11-16 | Ube Ind Ltd | Fungicide for agriculture and gardening use |
AT387039B (de) * | 1981-02-05 | 1988-11-25 | Veitscher Magnesitwerke Ag | Abstichvorrichtung fuer konverter |
JPS62151057A (ja) * | 1985-12-25 | 1987-07-06 | Nec Corp | 留守番電話 |
AU651946B2 (en) * | 1989-06-01 | 1994-08-11 | Shinagawa Refractories Co., Ltd. | Apparatus for controlling flow rate of molten metal |
US5335715A (en) * | 1990-08-09 | 1994-08-09 | Nippon Steel Corporation | Method and apparatus for continuous casting |
JPH06285613A (ja) * | 1992-06-22 | 1994-10-11 | Tokyo Yogyo Co Ltd | 鋳造用耐火性注湯チューブ |
JPH0763484A (ja) * | 1993-08-24 | 1995-03-10 | Nippon Steel Corp | 溶解炉における炉底出鋼ノズル |
JP2860884B2 (ja) * | 1994-10-26 | 1999-02-24 | 東芝セラミックス株式会社 | 溶鋼流量制御用耐火物及びそのシール方法 |
JP3012496B2 (ja) * | 1995-08-29 | 2000-02-21 | 住友重機械工業株式会社 | 連続鋳造設備における浸漬ノズル |
-
2004
- 2004-10-18 DE DE102004050701A patent/DE102004050701B3/de not_active Expired - Fee Related
-
2005
- 2005-09-16 BR BRPI0513000-0A patent/BRPI0513000A/pt not_active IP Right Cessation
- 2005-09-16 JP JP2007536013A patent/JP2008516772A/ja active Pending
- 2005-09-16 EP EP05783886A patent/EP1805330A1/de not_active Withdrawn
- 2005-09-16 US US11/568,181 patent/US20070216073A1/en not_active Abandoned
- 2005-09-16 WO PCT/EP2005/009957 patent/WO2006042597A1/de active Application Filing
- 2005-09-16 KR KR1020067026918A patent/KR20070068304A/ko not_active Application Discontinuation
- 2005-09-16 CA CA002563472A patent/CA2563472C/en not_active Expired - Fee Related
- 2005-09-16 CN CNA200580017678XA patent/CN1973054A/zh active Pending
- 2005-10-14 AR ARP050104309A patent/AR051219A1/es active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0120695B1 (de) * | 1983-03-24 | 1987-09-30 | Usx Engineers And Consultants, Inc. | Flachschieber und Verfahren zur Betätigung |
EP0375897A1 (de) * | 1988-12-23 | 1990-07-04 | Didier-Werke Ag | Abstichkanal für metallurgische Gefässe |
WO2005024069A2 (de) * | 2003-08-29 | 2005-03-17 | Stopinc Aktiengesellschaft | Abstichvorrichtung für ein schmelzgefäss, insbesondere für einen konverter |
Also Published As
Publication number | Publication date |
---|---|
US20070216073A1 (en) | 2007-09-20 |
DE102004050701B3 (de) | 2006-04-06 |
AR051219A1 (es) | 2006-12-27 |
KR20070068304A (ko) | 2007-06-29 |
JP2008516772A (ja) | 2008-05-22 |
CA2563472A1 (en) | 2006-04-27 |
CA2563472C (en) | 2010-02-02 |
EP1805330A1 (de) | 2007-07-11 |
BRPI0513000A (pt) | 2008-04-22 |
CN1973054A (zh) | 2007-05-30 |
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