ATE546553T1 - IMPROVED LANCE FOR LD STEEL PRODUCTION - Google Patents

IMPROVED LANCE FOR LD STEEL PRODUCTION

Info

Publication number
ATE546553T1
ATE546553T1 AT06745217T AT06745217T ATE546553T1 AT E546553 T1 ATE546553 T1 AT E546553T1 AT 06745217 T AT06745217 T AT 06745217T AT 06745217 T AT06745217 T AT 06745217T AT E546553 T1 ATE546553 T1 AT E546553T1
Authority
AT
Austria
Prior art keywords
supply line
gas supply
pressure gas
nozzle
central
Prior art date
Application number
AT06745217T
Other languages
German (de)
Inventor
Rajamani Sambasivam
Surya Lenka
Franz Durst
Sanjay Chandra
Satish Ajmani
Original Assignee
Tata Steel Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38023007&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE546553(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tata Steel Ltd filed Critical Tata Steel Ltd
Application granted granted Critical
Publication of ATE546553T1 publication Critical patent/ATE546553T1/en

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
    • 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
    • F27B3/22—Arrangements of air or gas supply devices
    • F27B3/225—Oxygen blowing
    • 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
    • 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

Landscapes

  • 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)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

An improved lance for LD steelmaking comprises a plurality of peripheral supersonic nozzles provided with a single inlet high pressure gas supply line and a central nozzle. The central nozzle is a subsonic nozzle provided with a separate low pressure gas supply line (1 ) independent of the high pressure gas supply line (2) for the peripheral nozzles. The flow rate through the central subsonic nozzle is controllable for varying generation of liquid metal droplets during the blow, according to the process requirement.
AT06745217T 2005-11-10 2006-05-04 IMPROVED LANCE FOR LD STEEL PRODUCTION ATE546553T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1023KO2005 2005-11-10
PCT/IN2006/000153 WO2007054957A1 (en) 2005-11-10 2006-05-04 An improved lance for ld steelmaking

Publications (1)

Publication Number Publication Date
ATE546553T1 true ATE546553T1 (en) 2012-03-15

Family

ID=38023007

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06745217T ATE546553T1 (en) 2005-11-10 2006-05-04 IMPROVED LANCE FOR LD STEEL PRODUCTION

Country Status (8)

Country Link
EP (1) EP1963541B1 (en)
JP (1) JP5047185B2 (en)
KR (1) KR101290639B1 (en)
AT (1) ATE546553T1 (en)
BR (1) BRPI0618348B1 (en)
PL (1) PL1963541T3 (en)
RU (1) RU2414512C2 (en)
WO (1) WO2007054957A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8323558B2 (en) 2009-11-30 2012-12-04 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic control of lance utilizing counterflow fluidic techniques
US8377372B2 (en) 2009-11-30 2013-02-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic lances utilizing fluidic techniques
US10781499B2 (en) * 2018-01-17 2020-09-22 Air Products And Chemicals, Inc. Bottom stirring tuyere and method for a basic oxygen furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848758U (en) * 1981-09-30 1983-04-01 新日本製鐵株式会社 Top blowing lance nozzle shape in converter
FR2521167B1 (en) * 1982-02-10 1987-04-30 Siderurgie Fse Inst Rech GAS INJECTION LANCE FOR METALLURGICAL CONVERTER
JPS6260807A (en) * 1985-09-10 1987-03-17 Nippon Kokan Kk <Nkk> Converter operating method and oxygen blowing lance
JPH06240329A (en) * 1993-02-17 1994-08-30 Nippon Steel Corp Top blowing oxygen lance for refining molten metal and method for refining molten metal
JPH07138632A (en) * 1993-11-18 1995-05-30 Nippon Steel Corp Nozzle structure of lance for blowing oxygen into electric furnace
JP3655659B2 (en) * 1995-03-03 2005-06-02 新日本製鐵株式会社 Blow acid sending method on converter with good yield
US5681526A (en) * 1996-04-23 1997-10-28 Usx Corporation Method and apparatus for post-combustion of gases during the refining of molten metal
JPH10287909A (en) * 1997-04-15 1998-10-27 Sumitomo Metal Ind Ltd Top-blown lance for blowing gas into converter and also melting skull stuck to nose
IT1302799B1 (en) * 1998-11-10 2000-09-29 Danieli & C Ohg Sp NOZZLE FOR OXYGEN AND GASTECNOLOGICAL INJECTION DEVICE AND RELATED SIZING METHOD

Also Published As

Publication number Publication date
RU2414512C2 (en) 2011-03-20
PL1963541T3 (en) 2012-07-31
EP1963541A1 (en) 2008-09-03
KR101290639B1 (en) 2013-07-30
KR20080077359A (en) 2008-08-22
EP1963541B1 (en) 2012-02-22
JP5047185B2 (en) 2012-10-10
BRPI0618348A2 (en) 2013-01-08
WO2007054957A1 (en) 2007-05-18
RU2008123506A (en) 2009-12-27
JP2009516070A (en) 2009-04-16
BRPI0618348B1 (en) 2018-11-21

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