EP1764421A3 - Vorrichtung zur Entkohlung einer Stahlschmelze - Google Patents

Vorrichtung zur Entkohlung einer Stahlschmelze Download PDF

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Publication number
EP1764421A3
EP1764421A3 EP06020935A EP06020935A EP1764421A3 EP 1764421 A3 EP1764421 A3 EP 1764421A3 EP 06020935 A EP06020935 A EP 06020935A EP 06020935 A EP06020935 A EP 06020935A EP 1764421 A3 EP1764421 A3 EP 1764421A3
Authority
EP
European Patent Office
Prior art keywords
molten steel
gas
decarbonising
steel melt
decarburization
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Withdrawn
Application number
EP06020935A
Other languages
English (en)
French (fr)
Other versions
EP1764421A2 (de
Inventor
Johannes Dr. Mueller
Johannes Spiess
Yuyou Dr. Zhai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP1764421A2 publication Critical patent/EP1764421A2/de
Publication of EP1764421A3 publication Critical patent/EP1764421A3/de
Withdrawn legal-status Critical Current

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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • C21C5/005—Manufacture of stainless steel
    • 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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above
    • 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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/35—Blowing from above and through the bath
    • 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
    • C21C5/4606—Lances or injectors
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Processing Of Solid Wastes (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Die Erfindung betrifft eine Anlage zur Entkohlung einer Stahlschmelze bei der Herstellung von rostfreiem Stahl mit einem metallurgischen Gefäß (2), insbesondere einen Konverter, zur Aufnahme einer Stahlschmelze, mit einer im oberen Teil des Gefäßes zum Aufblasen von Sauerstoff und gegebenenfalls Inertgas, insbesondere Argon und/oder Stickstoff, auf die Oberfläche der Stahlschmelze geeignet angeordneten Aufblasvorrichtung mit einer Blaslanze und einer Lavaldüse. Zur Erzielung einer besonders wirtschaftlichen und effizienten Entkohlung der Stahlschmelze zu erreichen wird vorgeschlagen, dass die Aufblasvorrichtung zumindest zwei Blaslanzen (6, 7) mit jeweils mindestens einer Lavaldüse umfasst, wobei sich die Lavaldüsen der verschiedenen Blaslanzen durch unterschiedliche Auslegung hinsichtlich der Durchflussmenge unterscheiden, und die Blaslanzen unabhängig voneinander zur Entkohlung der Stahlschmelze einsetzbar sind
EP06020935A 2002-08-21 2003-07-15 Vorrichtung zur Entkohlung einer Stahlschmelze Withdrawn EP1764421A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0125002A AT411530B (de) 2002-08-21 2002-08-21 Verfahren und vorrichtung zur entkohlung einer stahlschmelze
EP03792199A EP1530648B1 (de) 2002-08-21 2003-07-15 Verfahren und vorrichtung zur entkohlung einer stahlschmelze

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP03792199A Division EP1530648B1 (de) 2002-08-21 2003-07-15 Verfahren und vorrichtung zur entkohlung einer stahlschmelze

Publications (2)

Publication Number Publication Date
EP1764421A2 EP1764421A2 (de) 2007-03-21
EP1764421A3 true EP1764421A3 (de) 2007-12-26

Family

ID=3687818

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06020935A Withdrawn EP1764421A3 (de) 2002-08-21 2003-07-15 Vorrichtung zur Entkohlung einer Stahlschmelze
EP03792199A Expired - Lifetime EP1530648B1 (de) 2002-08-21 2003-07-15 Verfahren und vorrichtung zur entkohlung einer stahlschmelze

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03792199A Expired - Lifetime EP1530648B1 (de) 2002-08-21 2003-07-15 Verfahren und vorrichtung zur entkohlung einer stahlschmelze

Country Status (8)

Country Link
EP (2) EP1764421A3 (de)
CN (1) CN100532581C (de)
AT (2) AT411530B (de)
AU (1) AU2003257462A1 (de)
DE (1) DE50307383D1 (de)
ES (1) ES2287557T3 (de)
RU (1) RU2319750C2 (de)
WO (1) WO2004018714A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049896A1 (de) * 2009-01-22 2010-08-05 Sms Siemag Ag Impulsspülung mit Inertgas beim BOF- und AOD-Konverterprozess
DE102014222727A1 (de) * 2014-11-06 2016-05-12 Sms Group Gmbh Verfahren und Vorrichtung zur Erzeugung eines Rostfreistahls
WO2024100435A1 (en) * 2022-11-10 2024-05-16 Arcelormittal Post combustion lance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545786A (en) * 1978-12-26 1985-10-08 Sumitomo Metal Industries, Ltd. Apparatus for gasifying solid carbonaceous materials
JPH06158142A (ja) * 1992-11-24 1994-06-07 Sumitomo Metal Ind Ltd 高クロム鋼の真空脱炭精錬装置
US5540753A (en) * 1994-07-27 1996-07-30 Nippon Steel Corporation Method for refining chromium-containing molten steel by decarburization

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT216032B (de) * 1959-02-20 1961-07-10 Arbed Vorrichtung zum Beblasen eines Metallbades von oben
NL6710354A (de) * 1966-07-27 1968-01-29
JPS6040486B2 (ja) * 1979-07-03 1985-09-11 住友金属工業株式会社 鋼の精錬法
JPS6063307A (ja) * 1983-09-14 1985-04-11 Kawasaki Steel Corp 極低炭素鋼の転炉製鋼法
LU86322A1 (fr) * 1986-02-25 1987-09-10 Arbed Lance de soufflage d'oxygene
LU88023A1 (fr) * 1991-10-30 1993-05-17 Arbed Lance de soufflage
JP3167888B2 (ja) * 1995-07-27 2001-05-21 川崎製鉄株式会社 含クロム溶鋼の脱炭精錬方法及び精錬ガス用上吹ランス

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545786A (en) * 1978-12-26 1985-10-08 Sumitomo Metal Industries, Ltd. Apparatus for gasifying solid carbonaceous materials
JPH06158142A (ja) * 1992-11-24 1994-06-07 Sumitomo Metal Ind Ltd 高クロム鋼の真空脱炭精錬装置
US5540753A (en) * 1994-07-27 1996-07-30 Nippon Steel Corporation Method for refining chromium-containing molten steel by decarburization

Also Published As

Publication number Publication date
RU2319750C2 (ru) 2008-03-20
EP1764421A2 (de) 2007-03-21
ATA12502002A (de) 2003-07-15
AT411530B (de) 2004-02-25
CN1675383A (zh) 2005-09-28
ES2287557T3 (es) 2007-12-16
EP1530648B1 (de) 2007-05-30
AU2003257462A1 (en) 2004-03-11
DE50307383D1 (de) 2007-07-12
ATE363546T1 (de) 2007-06-15
CN100532581C (zh) 2009-08-26
EP1530648A1 (de) 2005-05-18
RU2005107698A (ru) 2005-09-10
WO2004018714A1 (de) 2004-03-04

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