WO2002081759A9 - Verfahren und vorrichtung zur verhinderung des mitfliessens von schlacke beim abstich einer metallschmelze - Google Patents
Verfahren und vorrichtung zur verhinderung des mitfliessens von schlacke beim abstich einer metallschmelzeInfo
- Publication number
- WO2002081759A9 WO2002081759A9 PCT/DE2002/001117 DE0201117W WO02081759A9 WO 2002081759 A9 WO2002081759 A9 WO 2002081759A9 DE 0201117 W DE0201117 W DE 0201117W WO 02081759 A9 WO02081759 A9 WO 02081759A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- channels
- vessel
- opening
- tapping
- Prior art date
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
-
- 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
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/19—Arrangements of devices for discharging
-
- 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
- F27D3/159—Equipment for removing or retaining slag for retaining slag during the pouring of the metal or retaining metal during the pouring of the slag
-
- 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
- F27D1/0003—Linings or walls
- F27D1/003—Linings or walls comprising porous bricks
-
- 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
- F27D1/1621—Making linings by using shaped elements, e.g. bricks
-
- 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
- F27D3/16—Introducing a fluid jet or current into the charge
- F27D2003/161—Introducing a fluid jet or current into the charge through a porous element
-
- 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
Definitions
- the invention relates to a method for preventing the flow of slag when tapping a molten metal from a metallurgical vessel.
- these vessels may not, for example, exclusively be those for steel production, that is to say a converter or the vessel of an electric furnace.
- such a vessel offers an approximately oval or pear shape, the tap opening being provided in the tapering front bottom region.
- the melt level is about 1 m to 1.50 m above the tap opening.
- This tap hole is clogged with a filling material and closed at the bottom by means of a slide.
- the filling material forms a hill protruding into the interior of the container above the tap opening.
- the vessel For the tapping, ie for the transfer of the melt into the pan in which the steel is subjected to the secondary metallurgy process, the vessel is pivoted into the tapping position, so that the tapping opening is now the deepest area of the vessel forms. In this position the slide is opened and the filling material in the tap opening is removed.
- the outflowing melt forms a vortex above the tap opening (vortex effect), which pulls the slag floating on the melt with it through the suction effect, which is undesirable for metallurgical reasons.
- the invention is therefore based on the object of carrying out a method of the type mentioned at the outset in such a way that the aforementioned swirl effect can be eliminated in a simple manner.
- Another object of the invention is to provide an apparatus for performing the method.
- the invention solves the first part of the task with the aid of the following method steps:
- gas is blown into the melt from below through the bottom of the ladle in order to produce a circulation process of the melt so that a homogenization of the melt temperature how to achieve the alloy components dissolved in the melt.
- these flushing stones are surrounded by a metal jacket.
- the height of the steel level in the pan above the sink is up to 4 m.
- the invention makes use of this effect.
- the tap opening in the vessel of an electric furnace is formed by so-called interchangeable tubes, several of which form the opening which narrows downwards one above the other.
- Such exchangeable pipes consist of magnesite, corundum concrete or similar refractory materials.
- These interchangeable tubes are surrounded by tapping frames, with a joint between the interchangeable tubes and tapping frames that is filled with a refractory material.
- This system is completed at the bottom by a so-called cup stone.
- the opening of the cup stone can be closed by means of a slide.
- the gas supply begins.
- the gas emerging from the channels removes the hill formed from backfill material above the tap opening.
- the slide is swiveled away below the cup stone and the filling material is removed inside the tap hole.
- the melt can now flow into the pan, the above-mentioned strudel wanting to form above the tap opening.
- the gas flowing into the melt similar to the flushing process in the pan above the channel openings, forms the "bald head" described, which means that the slag is pressed outwards in this area and is prevented from flowing into the pan through the tap opening.
- the blowing in of the gas is continued until the vessel has been swung back again and the tap opening is no longer covered by the melt.
- the ducts run through all of the interchangeable tubes arranged one above the other, provision is preferably made for only the uppermost or the uppermost two of the interchangeable tubes to be provided with channels. These two uppermost interchangeable tubes can also be formed in one piece and thus form a unit.
- the arrangement and geometry of the channels result from the respective application requirements.
- Experience in the field of flushing stones can be used for the creation and geometry of the channels.
- the bottom duct-carrying interchangeable tube is provided on its underside with an annular space in which all ducts open, and in which the gas supply tube opens, which, for example, is in the area between the interchangeable tubes and the surrounding tapping frames is led.
- the existing joint between the two elements can be used for this, or a groove is provided in the outside of the ductless interchangeable pipes.
- claims 10 and 11 alternatively propose either to put the metallic shell of the metallurgical vessel on the same electrical potential as the gas supply tubes or, according to claim 11, the gas supply tube against that on the metallurgical Isolate the potential of the vessel.
- FIG. 1 shows the vessel of an electric furnace for steel production in a longitudinal section and is generally provided with the reference symbol 1.
- the vessel 1 has an approximately pear shape, the tap opening 4 being located at the tapering end 2 in the bottom 3 of the vessel 1.
- the anode 5 is arranged in the approximately central region of the base 3. The cathode and the lid of the vessel are not shown.
- the vessel 1 can be tilted about an axis perpendicular to the plane of the paper. In this vessel 1, scrap is predominantly melted, the melt reaching the height designated 6 after the melting process.
- this tapping system is constructed from five interchangeable tubes 7, 7 'arranged one above the other, the opening diameter of which becomes smaller towards the bottom.
- the interchangeable tubes 7, V are surrounded by cubic tapping frame stones 8, the joint 9 between the interchangeable tubes 7, 7 'and the tapping frame stones 8 being filled with a refractory filling material.
- the tapping system is completed at the bottom by means of a cup stone 10, the opening of which can be closed by means of a slide (not shown).
- the uppermost two interchangeable tubes 7 ' have axially extending channels 11 arranged in the tube wall, which establish a connection between the interior of the vessel 1 and an annular space 12 which is provided on the underside of the lower interchangeable tube 7 1 .
- a gas supply line 13 opens into this annular space 12, which leads downwards between the exchangeable tubes 7 and the tapping frame stones 8 and is guided obliquely outwards between the lowermost tapping frame stone 8 and the cup stone.
- FIG. 3 shows a possible embodiment of an exchangeable tube 7 '.
- This interchangeable tube 7 ' is constructed in two parts, namely from an inner part 14 which is conically shaped. is formed, the outer shell of this cone narrows upwards.
- This inner cone 14 is in an outer part 15, the inner surface of which is complementary to the outer surface of the inner cone 14.
- FIG. 4c A top view of such an exchangeable tube 7 'is shown in FIG. 4c.
- the channels 11 for the gas flow are formed here by grooves formed in the outer surface of the inner cone 14.
- FIGS. 4a and 4b Further possible configurations of the channels can be found in FIGS. 4a and 4b.
- the channels 11 are designed as radially arranged slots, while the channels 11 in the example of FIG. 4b are formed by a large number of bores.
- channels in a star shape or the like are possible, for example channels in a star shape or the like.
- the vessel 1 is tipped forward so that the tap opening 4 forms the lowermost part of the vessel 1.
- the gas is blown into the melt via the channels 11. Only then is the tapping system opened so that the melt can flow through the tap opening 4 into a pan (not shown) placed underneath.
- the tapping system opened so that the melt can flow through the tap opening 4 into a pan (not shown) placed underneath.
- the formation of a vortex above the tap opening 4 is counteracted, so that no slag can be entrained into the pan through the tap opening 4 by this vortex.
- a so-called "bald head” is formed above the tap opening 4 by the gas blown in, ie an area in which the slag is forced away to the side.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Charging Or Discharging (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
- Continuous Casting (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Discharge Heating (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50210350T DE50210350D1 (de) | 2001-04-05 | 2002-03-27 | Vorrichtung zur verhinderung des mitfliessens von schlacke beim abstich einer metallschmelze |
NZ522964A NZ522964A (en) | 2001-04-05 | 2002-03-27 | Method and device for preventing slag from flowing along when tapping a molten metal |
HU0300903A HUP0300903A2 (en) | 2001-04-05 | 2002-03-27 | Method and device for preventing slag from flowing along when tapping a molten metal |
CA002410799A CA2410799C (en) | 2001-04-05 | 2002-03-27 | Method and device for preventing slag from flowing along when tapping a molten metal |
DZ023348A DZ3348A1 (fr) | 2001-04-05 | 2002-03-27 | Procédé et dispositif pour empècher l'écoulement du laitier lors de la coulée d'une fusion métallique |
DE10291492T DE10291492D2 (de) | 2001-04-05 | 2002-03-27 | Verfahren und Vorrichtung zur Verhinderung des Mitfliessens von Schlacke beim Abstich einer Metallschmelze |
MXPA02011714A MXPA02011714A (es) | 2001-04-05 | 2002-03-27 | Metodo y dispositivo para impedir que la escoria fluya con metal fundido durante el sangrado de este. |
SK1700-2002A SK286449B6 (sk) | 2001-04-05 | 2002-03-27 | Zariadenie na zamedzenie spoločného prúdenia trosky pri odpichu kovovej taveniny |
US10/297,295 US6951296B2 (en) | 2001-04-05 | 2002-03-27 | Method and device for preventing slag from flowing along when tapping a molten metal |
DK02735019T DK1373583T3 (da) | 2001-04-05 | 2002-03-27 | Indretning til at forhindre slagge i at blive trukket med ud under aftapning af en metalsmelte |
EP02735019A EP1373583B1 (de) | 2001-04-05 | 2002-03-27 | Vorrichtung zur verhinderung des mitfliessens von schlacke beim abstich einer metallschmelze |
BRPI0204753-5A BR0204753B1 (pt) | 2001-04-05 | 2002-03-27 | dispositivo para evitar o derramamento de escória durante a sangria de uma fusão de metal. |
UA2003010152A UA73994C2 (en) | 2001-04-05 | 2002-03-27 | A device for preventing slag run-out when tapping a molten metal |
JP2002579521A JP4029046B2 (ja) | 2001-04-05 | 2002-03-27 | 金属溶融物の湯出しにおけるスラグの流出防止装置 |
PL358060A PL197434B1 (pl) | 2001-04-05 | 2002-03-27 | Urządzenie do zapobiegania spływaniu żużla przy spuście stopionego metalu ze zbiornika metalurgicznego |
KR1020027016533A KR100544529B1 (ko) | 2001-04-05 | 2002-03-27 | 용융금속의 탭핑시 슬래그 동반의 방지장치 |
EA200201265A EA004341B1 (ru) | 2001-04-05 | 2002-03-27 | Способ и устройство для предотвращения вытекания шлака при выпуске металлического расплава |
AU2002311073A AU2002311073B2 (en) | 2001-04-05 | 2002-03-27 | Method and device for preventing slag from flowing along when tapping a molten metal |
NO20025825A NO20025825L (no) | 2001-04-05 | 2002-12-04 | Fremgangsmåte og anordning for å forhindre medströmning av slagg når man tapper et smeltet metall |
CY20071101135T CY1106838T1 (el) | 2001-04-05 | 2007-08-28 | Διαταξη για την παρεμποδιση της ροης της σκουριας με την ληψη του τετηγμενου μεταλλου |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10117181.1 | 2001-04-05 | ||
DE10117181A DE10117181C1 (de) | 2001-04-05 | 2001-04-05 | Verfahren und Vorrichtung zur Verhinderung des Mitfließens von Schlacke beim Abstich einer Stahlschmelze |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2002081759A1 WO2002081759A1 (de) | 2002-10-17 |
WO2002081759A8 WO2002081759A8 (de) | 2002-12-19 |
WO2002081759A9 true WO2002081759A9 (de) | 2003-02-06 |
Family
ID=7680629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/001117 WO2002081759A1 (de) | 2001-04-05 | 2002-03-27 | Verfahren und vorrichtung zur verhinderung des mitfliessens von schlacke beim abstich einer metallschmelze |
Country Status (27)
Country | Link |
---|---|
US (1) | US6951296B2 (de) |
EP (1) | EP1373583B1 (de) |
JP (1) | JP4029046B2 (de) |
KR (1) | KR100544529B1 (de) |
CN (1) | CN1204274C (de) |
AT (1) | ATE365230T1 (de) |
AU (1) | AU2002311073B2 (de) |
BR (1) | BR0204753B1 (de) |
CA (1) | CA2410799C (de) |
CY (1) | CY1106838T1 (de) |
CZ (1) | CZ301430B6 (de) |
DE (3) | DE10117181C1 (de) |
DK (1) | DK1373583T3 (de) |
DZ (1) | DZ3348A1 (de) |
EA (1) | EA004341B1 (de) |
ES (1) | ES2289105T3 (de) |
HU (1) | HUP0300903A2 (de) |
MX (1) | MXPA02011714A (de) |
NO (1) | NO20025825L (de) |
NZ (1) | NZ522964A (de) |
PL (1) | PL197434B1 (de) |
PT (1) | PT1373583E (de) |
SK (1) | SK286449B6 (de) |
TW (1) | TW528806B (de) |
UA (1) | UA73994C2 (de) |
WO (1) | WO2002081759A1 (de) |
ZA (1) | ZA200210336B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004027440B3 (de) * | 2004-06-04 | 2005-06-16 | Refractory Intellectual Property Gmbh & Co. Kg | Abstichrohr |
US8210402B2 (en) | 2009-02-09 | 2012-07-03 | Ajf, Inc. | Slag control shape device with L-shape loading bracket |
EP2998672A1 (de) * | 2014-09-17 | 2016-03-23 | Refractory Intellectual Property GmbH & Co. KG | Abstich an einem metallurgischen Gefäss, insbesondere einem Elektrolichtbogenofen |
CN106978519A (zh) * | 2017-04-21 | 2017-07-25 | 东北大学 | 一种吹氩气防止钢包出钢过程中漩涡卷渣的方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU84213A1 (fr) * | 1982-06-18 | 1983-11-23 | Arbed | Dispositif pour vidanger des recipients metallurgiques |
CA1206752A (fr) * | 1982-06-18 | 1986-07-02 | Jean Goedert | Procede et dispositif pour vidanger des recipients metallurgiques |
JPS59126713A (ja) | 1983-01-08 | 1984-07-21 | Tokyo Yogyo Co Ltd | 炉底出鋼式電炉 |
DE3743575A1 (de) * | 1987-12-22 | 1989-07-13 | Krupp Gmbh | Verfahren zum abstechen einer metallschmelze und metallurgisches gefaess zur durchfuehrung des verfahrens |
JPH01201410A (ja) | 1988-02-08 | 1989-08-14 | Nkk Corp | 精錬炉からの出鋼時における溶融スラグの流出防止方法 |
US4840355A (en) * | 1988-07-13 | 1989-06-20 | Labate M D | Slag controlling device for basic oxygen furnaces |
JPH10176212A (ja) * | 1996-12-18 | 1998-06-30 | Sumitomo Metal Ind Ltd | 溶鋼の排出時におけるスラグ流出防止方法 |
JPH11279620A (ja) * | 1998-03-31 | 1999-10-12 | Kawasaki Steel Corp | 転炉の出鋼時間調整方法 |
DE19916232A1 (de) * | 1999-04-10 | 2000-10-12 | Sms Demag Ag | Verfahren und Vorrichtung zum Abstechen von Metallschmelzen aus metallurgischen Schmelzgefäßen |
DE10034370A1 (de) | 2000-07-14 | 2002-01-24 | Sms Demag Ag | Verfahren zum Verschließen oder Öffnen des Abstichloches eines metallurgischen Gefäßes, insbesondere eines Elektrolichtbogenofens und zugehöriger Bodenabstich |
-
2001
- 2001-04-05 DE DE10117181A patent/DE10117181C1/de not_active Expired - Fee Related
-
2002
- 2002-03-11 TW TW091104458A patent/TW528806B/zh not_active IP Right Cessation
- 2002-03-27 PL PL358060A patent/PL197434B1/pl not_active IP Right Cessation
- 2002-03-27 EP EP02735019A patent/EP1373583B1/de not_active Expired - Lifetime
- 2002-03-27 CZ CZ20024002A patent/CZ301430B6/cs not_active IP Right Cessation
- 2002-03-27 HU HU0300903A patent/HUP0300903A2/hu unknown
- 2002-03-27 EA EA200201265A patent/EA004341B1/ru not_active IP Right Cessation
- 2002-03-27 BR BRPI0204753-5A patent/BR0204753B1/pt not_active IP Right Cessation
- 2002-03-27 NZ NZ522964A patent/NZ522964A/en not_active IP Right Cessation
- 2002-03-27 WO PCT/DE2002/001117 patent/WO2002081759A1/de active IP Right Grant
- 2002-03-27 DK DK02735019T patent/DK1373583T3/da active
- 2002-03-27 UA UA2003010152A patent/UA73994C2/uk unknown
- 2002-03-27 AU AU2002311073A patent/AU2002311073B2/en not_active Ceased
- 2002-03-27 PT PT02735019T patent/PT1373583E/pt unknown
- 2002-03-27 DZ DZ023348A patent/DZ3348A1/fr active
- 2002-03-27 MX MXPA02011714A patent/MXPA02011714A/es active IP Right Grant
- 2002-03-27 JP JP2002579521A patent/JP4029046B2/ja not_active Expired - Fee Related
- 2002-03-27 SK SK1700-2002A patent/SK286449B6/sk not_active IP Right Cessation
- 2002-03-27 DE DE50210350T patent/DE50210350D1/de not_active Expired - Lifetime
- 2002-03-27 DE DE10291492T patent/DE10291492D2/de not_active Expired - Fee Related
- 2002-03-27 AT AT02735019T patent/ATE365230T1/de active
- 2002-03-27 ES ES02735019T patent/ES2289105T3/es not_active Expired - Lifetime
- 2002-03-27 CA CA002410799A patent/CA2410799C/en not_active Expired - Fee Related
- 2002-03-27 CN CNB028010515A patent/CN1204274C/zh not_active Expired - Fee Related
- 2002-03-27 US US10/297,295 patent/US6951296B2/en not_active Expired - Fee Related
- 2002-03-27 KR KR1020027016533A patent/KR100544529B1/ko not_active IP Right Cessation
- 2002-12-04 NO NO20025825A patent/NO20025825L/no not_active Application Discontinuation
- 2002-12-20 ZA ZA200210336A patent/ZA200210336B/en unknown
-
2007
- 2007-08-28 CY CY20071101135T patent/CY1106838T1/el unknown
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