JPS6439316A - Steel refining method and refining equipment - Google Patents

Steel refining method and refining equipment

Info

Publication number
JPS6439316A
JPS6439316A JP19422987A JP19422987A JPS6439316A JP S6439316 A JPS6439316 A JP S6439316A JP 19422987 A JP19422987 A JP 19422987A JP 19422987 A JP19422987 A JP 19422987A JP S6439316 A JPS6439316 A JP S6439316A
Authority
JP
Japan
Prior art keywords
decarburization
molten steel
time
flame
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
JP19422987A
Other languages
Japanese (ja)
Other versions
JP2590909B2 (en
Inventor
Senji Fujita
Tetsuo Okamoto
Atsushi Ishii
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 JP62194229A priority Critical patent/JP2590909B2/en
Publication of JPS6439316A publication Critical patent/JPS6439316A/en
Application granted granted Critical
Publication of JP2590909B2 publication Critical patent/JP2590909B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To efficiently accomplish decarburization in a short time, by regulating the length of flame so that it is longer in the former stage of decarburization and shorter in the latter stage at the time of providing heat to molten steel by means of an oxygen burner provided to the upper part of a furnace. CONSTITUTION:Heat is provided to molten steel in a furnace by means of a burner provided to the upper part of the furnace while agitating the molten steel by blowing a gas into the molten steel. At this time, the flame of the burner is made longer in the former stage of decarburization, by which combustion gas is blown against the molten steel to accelerate decarburization. In the latter stage of decarburization, the length of flame is made shorter to provide heat alone to the molten steel. As to the proper time for switching the length of flame, the point of time when C content in the molten steel is reduced and a change from oxygen-supply controlled decarburization to carbon-diffusion controlled decarburization in the molten steel is observed is preferred. By this method, the refining of steel, particularly, decarburization can be finished within a shortened period of time.
JP62194229A 1987-08-03 1987-08-03 Steel refining method and refining equipment Expired - Fee Related JP2590909B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62194229A JP2590909B2 (en) 1987-08-03 1987-08-03 Steel refining method and refining equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62194229A JP2590909B2 (en) 1987-08-03 1987-08-03 Steel refining method and refining equipment

Publications (2)

Publication Number Publication Date
JPS6439316A true JPS6439316A (en) 1989-02-09
JP2590909B2 JP2590909B2 (en) 1997-03-19

Family

ID=16321109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62194229A Expired - Fee Related JP2590909B2 (en) 1987-08-03 1987-08-03 Steel refining method and refining equipment

Country Status (1)

Country Link
JP (1) JP2590909B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06220521A (en) * 1993-01-27 1994-08-09 Nkk Corp Method for refining molten metal under reduced pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06220521A (en) * 1993-01-27 1994-08-09 Nkk Corp Method for refining molten metal under reduced pressure

Also Published As

Publication number Publication date
JP2590909B2 (en) 1997-03-19

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees