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TW200738889A - Injection lance and injection lance equipment for refining process, hot metal desiliconization process, and hot metal pretreatment process - Google Patents

Injection lance and injection lance equipment for refining process, hot metal desiliconization process, and hot metal pretreatment process

Info

Publication number
TW200738889A
TW200738889A TW096106719A TW96106719A TW200738889A TW 200738889 A TW200738889 A TW 200738889A TW 096106719 A TW096106719 A TW 096106719A TW 96106719 A TW96106719 A TW 96106719A TW 200738889 A TW200738889 A TW 200738889A
Authority
TW
Taiwan
Prior art keywords
hot metal
injection lance
blowing
lance
tube
Prior art date
Application number
TW096106719A
Other languages
Chinese (zh)
Other versions
TWI319014B (en
Inventor
Naoki Kikuchi
Yuta Hino
Seiji Nabeshima
Kenichiro Tamiya
Takashi Yamauchi
Okada Koji
Tanaka Yoshiyuki
Shimizu Hiroshi
Original Assignee
Jfe Steel Corp
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
Priority claimed from JP2006053017A external-priority patent/JP4923623B2/en
Priority claimed from JP2006104245A external-priority patent/JP5181425B2/en
Application filed by Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of TW200738889A publication Critical patent/TW200738889A/en
Application granted granted Critical
Publication of TWI319014B publication Critical patent/TWI319014B/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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/4613—Refractory coated lances; Immersion lances
    • 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
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
    • 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
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • 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
    • F27D1/10—Monolithic linings; Supports therefor
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

A gas blowing lance (1) for blowing oxygen gas into a molten metal. It has a double-tube structure comprising an inner tube (2) and an outer tube (3). Oxygen gas is blown through the inner tube, and a hydrocarbon gas is blown through the space between the inner tube and the outer tube. An Al2O3-MgO monolithic refractory having an MgO content of 5-30 mass% is used as a refractory coating layer for at least a blowing end part of the outer periphery of the outer tube. The lance hence has high durability and can be used more times than conventional ones. It contributes to a reduction in production cost. Also provided is a method of the desiliconizing of molten iron which uses the blowing lance.
TW096106719A 2006-02-27 2007-02-27 Injection lance and injection lance equipment for refining process, hot metal desiliconization process, and hot metal pretreatment process TWI319014B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006049686 2006-02-27
JP2006053017A JP4923623B2 (en) 2006-02-28 2006-02-28 Smelting lance equipment and method for desiliconization of hot metal
JP2006104245A JP5181425B2 (en) 2006-04-05 2006-04-05 Hot metal pretreatment method

Publications (2)

Publication Number Publication Date
TW200738889A true TW200738889A (en) 2007-10-16
TWI319014B TWI319014B (en) 2010-01-01

Family

ID=38459207

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096106719A TWI319014B (en) 2006-02-27 2007-02-27 Injection lance and injection lance equipment for refining process, hot metal desiliconization process, and hot metal pretreatment process

Country Status (4)

Country Link
KR (1) KR101021349B1 (en)
CN (1) CN101389774B (en)
TW (1) TWI319014B (en)
WO (1) WO2007100113A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5292752B2 (en) * 2007-09-26 2013-09-18 Ｊｆｅスチール株式会社 Oxygen gas blowing lance and hot metal desiliconization method
JP5194677B2 (en) * 2007-09-26 2013-05-08 Ｊｆｅスチール株式会社 Oxygen gas blowing lance and hot metal desiliconization method
JP2009084670A (en) * 2007-10-03 2009-04-23 Jfe Steel Kk Oxygen gas blowing lance and hot metal desiliconization method
JP5412300B2 (en) * 2010-01-13 2014-02-12 東京窯業株式会社 Gas blow lance
JP5412299B2 (en) * 2010-01-13 2014-02-12 東京窯業株式会社 Gas blow lance
KR101662376B1 (en) * 2011-06-30 2016-10-04 오토텍 오와이제이 Top submerged injecting lances
CN104419798B (en) * 2013-09-05 2017-02-22 鞍钢股份有限公司 Method for pre-desiliconizing molten iron by utilizing CAS-OB refining furnace
CN108642233B (en) * 2018-05-11 2019-10-29 鞍钢股份有限公司 A Method of Improving the Service Life of Converter Oxygen Lance
CN114606359A (en) * 2022-03-17 2022-06-10 重庆钢铁股份有限公司 A kind of test method of high temperature nano self-cleaning spray paint for oxygen lance

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2984038B2 (en) * 1990-08-06 1999-11-29 川崎製鉄株式会社 Method and apparatus for blowing gas into metal bath
JP3514393B2 (en) * 1994-02-10 2004-03-31 黒崎播磨株式会社 Castable refractories for lining dip tubes or lance pipes used in molten metal processing
JPH07242926A (en) * 1994-03-04 1995-09-19 Kawasaki Steel Corp Double-tube injection lance
JPH08209220A (en) * 1995-02-03 1996-08-13 Kobe Steel Ltd Device for predicting occurrence of slopping
JP3512960B2 (en) * 1996-11-11 2004-03-31 株式会社高田工業所 Lance device
JP3800734B2 (en) * 1997-06-23 2006-07-26 Ｊｆｅスチール株式会社 Gas injection lance for metal refining furnace
JPH11171656A (en) * 1997-12-05 1999-06-29 Toshiba Ceramics Co Ltd Castable refractory for dipping lance
CN1406215A (en) * 2000-03-14 2003-03-26 黑崎播磨株式会社 Unshaped refractory material for waste melting furnace and waste melting furnace using same

Also Published As

Publication number Publication date
KR20080089637A (en) 2008-10-07
CN101389774A (en) 2009-03-18
CN101389774B (en) 2011-05-11
TWI319014B (en) 2010-01-01
KR101021349B1 (en) 2011-03-14
WO2007100113A1 (en) 2007-09-07

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