ATA12502002A - METHOD AND DEVICE FOR DECOLARIZING A STEEL MELT - Google Patents
METHOD AND DEVICE FOR DECOLARIZING A STEEL MELTInfo
- Publication number
- ATA12502002A ATA12502002A AT0125002A AT12502002A ATA12502002A AT A12502002 A ATA12502002 A AT A12502002A AT 0125002 A AT0125002 A AT 0125002A AT 12502002 A AT12502002 A AT 12502002A AT A12502002 A ATA12502002 A AT A12502002A
- Authority
- AT
- Austria
- Prior art keywords
- molten steel
- gas
- decolarizing
- steel melt
- decarburization
- 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
- 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)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Decarburization of molten steel (3), especially in stainless steel production in a metallurgical vessel (2) and particularly a converter, involves treatment with oxygen and an inert gas if required and especially argon and/or nitrogen. To decarburize molten steel with carbon content of =0.3 wt.%, the gas is introduced through an opening (5) below the molten steel level and a blower lance (6, 7) over the molten steel surface, to bring the gas into contact with the metal.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0125002A AT411530B (en) | 2002-08-21 | 2002-08-21 | Decarburization of molten stainless steel in a converter involves delivering the treatment gas through an opening below the molten level and blower lances above it, to mix the gas thoroughly through the molten metal |
EP03792199A EP1530648B1 (en) | 2002-08-21 | 2003-07-15 | Methods and device for decarbonising a steel melt |
DE50307383T DE50307383D1 (en) | 2002-08-21 | 2003-07-15 | METHOD AND APPARATUS FOR DECOOLING A STEEL MELT |
PCT/EP2003/007634 WO2004018714A1 (en) | 2002-08-21 | 2003-07-15 | Methods and device for decarbonising a steel melt |
RU2005107698/02A RU2319750C2 (en) | 2002-08-21 | 2003-07-15 | Method and the device used for decarbonization of the steel melt |
EP06020935A EP1764421A3 (en) | 2002-08-21 | 2003-07-15 | Device for decarbonising a steel melt |
AT03792199T ATE363546T1 (en) | 2002-08-21 | 2003-07-15 | METHOD AND DEVICE FOR DECARBURIZING A MELTED STEEL |
ES03792199T ES2287557T3 (en) | 2002-08-21 | 2003-07-15 | PROCEDURE AND DEVICE FOR THE DISCHARGE OF A LIQUID STEEL. |
AU2003257462A AU2003257462A1 (en) | 2002-08-21 | 2003-07-15 | Methods and device for decarbonising a steel melt |
CNB038197626A CN100532581C (en) | 2002-08-21 | 2003-07-15 | Method and apparatus for decarburization of molten steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0125002A AT411530B (en) | 2002-08-21 | 2002-08-21 | Decarburization of molten stainless steel in a converter involves delivering the treatment gas through an opening below the molten level and blower lances above it, to mix the gas thoroughly through the molten metal |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA12502002A true ATA12502002A (en) | 2003-07-15 |
AT411530B AT411530B (en) | 2004-02-25 |
Family
ID=3687818
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0125002A AT411530B (en) | 2002-08-21 | 2002-08-21 | Decarburization of molten stainless steel in a converter involves delivering the treatment gas through an opening below the molten level and blower lances above it, to mix the gas thoroughly through the molten metal |
AT03792199T ATE363546T1 (en) | 2002-08-21 | 2003-07-15 | METHOD AND DEVICE FOR DECARBURIZING A MELTED STEEL |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT03792199T ATE363546T1 (en) | 2002-08-21 | 2003-07-15 | METHOD AND DEVICE FOR DECARBURIZING A MELTED STEEL |
Country Status (8)
Country | Link |
---|---|
EP (2) | EP1764421A3 (en) |
CN (1) | CN100532581C (en) |
AT (2) | AT411530B (en) |
AU (1) | AU2003257462A1 (en) |
DE (1) | DE50307383D1 (en) |
ES (1) | ES2287557T3 (en) |
RU (1) | RU2319750C2 (en) |
WO (1) | WO2004018714A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009049896A1 (en) * | 2009-01-22 | 2010-08-05 | Sms Siemag Ag | Pulse flushing with inert gas in the BOF and AOD converter process |
DE102014222727A1 (en) * | 2014-11-06 | 2016-05-12 | Sms Group Gmbh | Method and device for producing a stainless steel |
WO2024100435A1 (en) * | 2022-11-10 | 2024-05-16 | Arcelormittal | Post combustion lance |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT216032B (en) * | 1959-02-20 | 1961-07-10 | Arbed | Device for blowing a metal bath from above |
NL6710354A (en) * | 1966-07-27 | 1968-01-29 | ||
JPS5589395A (en) * | 1978-12-26 | 1980-07-05 | Sumitomo Metal Ind Ltd | Gasification of solid carbonaceous material and its device |
JPS6040486B2 (en) * | 1979-07-03 | 1985-09-11 | 住友金属工業株式会社 | steel refining method |
JPS6063307A (en) * | 1983-09-14 | 1985-04-11 | Kawasaki Steel Corp | Converter steel making method of dead soft steel |
LU86322A1 (en) * | 1986-02-25 | 1987-09-10 | Arbed | OXYGEN BLOWING LANCE |
LU88023A1 (en) * | 1991-10-30 | 1993-05-17 | Arbed | Blow lance |
JPH06158142A (en) * | 1992-11-24 | 1994-06-07 | Sumitomo Metal Ind Ltd | Vacuum decarburization refining apparatus for high chrome steel |
JP3410553B2 (en) * | 1994-07-27 | 2003-05-26 | 新日本製鐵株式会社 | Decarburization refining method of chromium-containing molten steel |
JP3167888B2 (en) * | 1995-07-27 | 2001-05-21 | 川崎製鉄株式会社 | Decarburization refining method of chromium-containing molten steel and upper blowing lance for refining gas |
-
2002
- 2002-08-21 AT AT0125002A patent/AT411530B/en not_active IP Right Cessation
-
2003
- 2003-07-15 ES ES03792199T patent/ES2287557T3/en not_active Expired - Lifetime
- 2003-07-15 WO PCT/EP2003/007634 patent/WO2004018714A1/en active IP Right Grant
- 2003-07-15 DE DE50307383T patent/DE50307383D1/en not_active Expired - Lifetime
- 2003-07-15 RU RU2005107698/02A patent/RU2319750C2/en not_active IP Right Cessation
- 2003-07-15 AT AT03792199T patent/ATE363546T1/en active
- 2003-07-15 EP EP06020935A patent/EP1764421A3/en not_active Withdrawn
- 2003-07-15 AU AU2003257462A patent/AU2003257462A1/en not_active Abandoned
- 2003-07-15 CN CNB038197626A patent/CN100532581C/en not_active Expired - Fee Related
- 2003-07-15 EP EP03792199A patent/EP1530648B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
RU2319750C2 (en) | 2008-03-20 |
EP1764421A2 (en) | 2007-03-21 |
EP1764421A3 (en) | 2007-12-26 |
AT411530B (en) | 2004-02-25 |
CN1675383A (en) | 2005-09-28 |
ES2287557T3 (en) | 2007-12-16 |
EP1530648B1 (en) | 2007-05-30 |
AU2003257462A1 (en) | 2004-03-11 |
DE50307383D1 (en) | 2007-07-12 |
ATE363546T1 (en) | 2007-06-15 |
CN100532581C (en) | 2009-08-26 |
EP1530648A1 (en) | 2005-05-18 |
RU2005107698A (en) | 2005-09-10 |
WO2004018714A1 (en) | 2004-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |