JPS565914A - Accelerating method for slagging in converter - Google Patents

Accelerating method for slagging in converter

Info

Publication number
JPS565914A
JPS565914A JP8185879A JP8185879A JPS565914A JP S565914 A JPS565914 A JP S565914A JP 8185879 A JP8185879 A JP 8185879A JP 8185879 A JP8185879 A JP 8185879A JP S565914 A JPS565914 A JP S565914A
Authority
JP
Japan
Prior art keywords
blowing
gas
foamable
steel
molten steel
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.)
Granted
Application number
JP8185879A
Other languages
Japanese (ja)
Other versions
JPS6023164B2 (en
Inventor
Minoru Ishikawa
Susumu Yamaguchi
Toshikuni Kitaura
Kenichi Kinoshita
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP8185879A priority Critical patent/JPS6023164B2/en
Publication of JPS565914A publication Critical patent/JPS565914A/en
Publication of JPS6023164B2 publication Critical patent/JPS6023164B2/en
Expired 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
    • 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
    • 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
    • C21C5/36—Processes yielding slags of special composition
    • C21C2005/366—Foam slags

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)

Abstract

PURPOSE:To accelerate slagging and progress desirable steel-making reaction surely and rapidly between the molten steel and molten slag by blowing foamable solvent powder, with inert gas as carrier gas, from a central nozzle, while blowing O2 from the peripheral nozzles of a porous nozzle lance. CONSTITUTION:After the middle period of converter blowing, i.e. for about 15 minutes from the start of blowing, foamable solvent powder is added into molten steel by being carried in Ar or N2 gas from a central hole 2 along with O2 blowing from the peripheral holes 3 of a lance 1. Namely, the CaCO3 in the foamable solvent added in the temperature-rising period of the molten steel at the initial period right after the start of the blowing, e.g. diamide lime decomposes rapidly to form CO2 gas. The steel bath is stirred by this CO2 gas and the CaO of a high melting point thus formed is slagged in an early time.
JP8185879A 1979-06-27 1979-06-27 Method for promoting slag formation in a top-blown converter Expired JPS6023164B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8185879A JPS6023164B2 (en) 1979-06-27 1979-06-27 Method for promoting slag formation in a top-blown converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8185879A JPS6023164B2 (en) 1979-06-27 1979-06-27 Method for promoting slag formation in a top-blown converter

Publications (2)

Publication Number Publication Date
JPS565914A true JPS565914A (en) 1981-01-22
JPS6023164B2 JPS6023164B2 (en) 1985-06-06

Family

ID=13758176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8185879A Expired JPS6023164B2 (en) 1979-06-27 1979-06-27 Method for promoting slag formation in a top-blown converter

Country Status (1)

Country Link
JP (1) JPS6023164B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813643A (en) * 1981-07-20 1983-01-26 Showa Denko Kk Polyolefin composition
JPS59192185A (en) * 1983-04-15 1984-10-31 文化シヤツタ−株式会社 Shutter
JPS61107886U (en) * 1984-12-19 1986-07-08
JPS62112888A (en) * 1985-11-12 1987-05-23 東工シヤツタ−株式会社 Panel shutter device
JP2005068532A (en) * 2003-08-28 2005-03-17 Jfe Steel Kk Smelting method through top-blowing oxygen
DE102016200372A1 (en) * 2016-01-14 2017-07-20 Thyssenkrupp Ag Method for utilization of a steelworks slag, slag foam and use of a slag foam

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813643A (en) * 1981-07-20 1983-01-26 Showa Denko Kk Polyolefin composition
JPS6367497B2 (en) * 1981-07-20 1988-12-26 Showa Denko Kk
JPS59192185A (en) * 1983-04-15 1984-10-31 文化シヤツタ−株式会社 Shutter
JPH0151629B2 (en) * 1983-04-15 1989-11-06 Bunka Shutter
JPS61107886U (en) * 1984-12-19 1986-07-08
JPH04225Y2 (en) * 1984-12-19 1992-01-07
JPS62112888A (en) * 1985-11-12 1987-05-23 東工シヤツタ−株式会社 Panel shutter device
JP2005068532A (en) * 2003-08-28 2005-03-17 Jfe Steel Kk Smelting method through top-blowing oxygen
DE102016200372A1 (en) * 2016-01-14 2017-07-20 Thyssenkrupp Ag Method for utilization of a steelworks slag, slag foam and use of a slag foam

Also Published As

Publication number Publication date
JPS6023164B2 (en) 1985-06-06

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