JPS6428318A - Aod furnace - Google Patents

Aod furnace

Info

Publication number
JPS6428318A
JPS6428318A JP18123287A JP18123287A JPS6428318A JP S6428318 A JPS6428318 A JP S6428318A JP 18123287 A JP18123287 A JP 18123287A JP 18123287 A JP18123287 A JP 18123287A JP S6428318 A JPS6428318 A JP S6428318A
Authority
JP
Japan
Prior art keywords
gas
steel
plural
molten steel
refining
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
JP18123287A
Other languages
Japanese (ja)
Other versions
JP2551013B2 (en
Inventor
Koreaki Koizumi
Kazuhiro Nomura
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP62181232A priority Critical patent/JP2551013B2/en
Publication of JPS6428318A publication Critical patent/JPS6428318A/en
Application granted granted Critical
Publication of JP2551013B2 publication Critical patent/JP2551013B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To eliminate dead zone of convection of the molten steel and to reduce spattering of the molten steel with splash by shifting a point of intersection of injecting gas from the plural tuyeres for blowing refining gas in an AOD furnace far a way from the furnace center point. CONSTITUTION:In the AOD furnace for decarbonized-refining a stainless steel with a converter, by blowing inert gas of Ar, etc., together with O2 gas from plural tuyeres, the partial pressure of CO gas generated by oxidizing the contained C and decarbonizing is reduced with the Ar gas. In the case of decarbonized-refining only C without oxidizing Cr, the thickness t1 of the refractory bricks 5a at the tuyere side composing of plural tuyeres is to be 550mm and the thickness t2 of the refractory bricks 5b at the reverse steel tapping side is to be 330mm. Further, the point of intersection P of the injecting gas from the plural tuyere is positioned to come to the steel tapping side from the center C of the furnace body by 50-250mm. The dead zone of the converter of the molten steel and the splash of the molten steel caused by gas blowing are eliminated and the molten stainless steel is refined by decarbonizing without any oxidizing loss of the Cr at good yield of the raw material for a short time.
JP62181232A 1987-07-22 1987-07-22 AOD furnace Expired - Lifetime JP2551013B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62181232A JP2551013B2 (en) 1987-07-22 1987-07-22 AOD furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62181232A JP2551013B2 (en) 1987-07-22 1987-07-22 AOD furnace

Publications (2)

Publication Number Publication Date
JPS6428318A true JPS6428318A (en) 1989-01-30
JP2551013B2 JP2551013B2 (en) 1996-11-06

Family

ID=16097112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62181232A Expired - Lifetime JP2551013B2 (en) 1987-07-22 1987-07-22 AOD furnace

Country Status (1)

Country Link
JP (1) JP2551013B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03103245U (en) * 1990-02-05 1991-10-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03103245U (en) * 1990-02-05 1991-10-28

Also Published As

Publication number Publication date
JP2551013B2 (en) 1996-11-06

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