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JPS6439315A - Steel refining method - Google Patents

Steel refining method

Info

Publication number
JPS6439315A
JPS6439315A JP19422887A JP19422887A JPS6439315A JP S6439315 A JPS6439315 A JP S6439315A JP 19422887 A JP19422887 A JP 19422887A JP 19422887 A JP19422887 A JP 19422887A JP S6439315 A JPS6439315 A JP S6439315A
Authority
JP
Japan
Prior art keywords
molten steel
tuyeres
gases
time
furnace
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.)
Pending
Application number
JP19422887A
Other languages
Japanese (ja)
Inventor
Saburo Sugiura
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 JP19422887A priority Critical patent/JPS6439315A/en
Publication of JPS6439315A publication Critical patent/JPS6439315A/en
Pending legal-status Critical Current

Links

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  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To shorten decarburizing time and also to control the amount of oxidation of valuable metals such as Cr, by adding while agitating molten steel by blowing gases into the molten steel, a powdered solid oxygen source together with the above gases through tuyeres or an immersion lance. CONSTITUTION:Molten steel in a furnace is agitated by blowing an O2 gas and an Ar gas into the molten steel through tuyeres in the bottom, and heat is supplied to the molten steel by means of a burner in the upper part of the furnace. At this time, a powdered solid oxygen source, such as chromite sand and mill scale, is added together with the gases for agitation through the tuyeres or a lance into the molten steel. By this method, decarburizing time can be shortened and the additive quantity of a reducing agent for re-reducing valuable metals can be reduced.
JP19422887A 1987-08-03 1987-08-03 Steel refining method Pending JPS6439315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19422887A JPS6439315A (en) 1987-08-03 1987-08-03 Steel refining method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19422887A JPS6439315A (en) 1987-08-03 1987-08-03 Steel refining method

Publications (1)

Publication Number Publication Date
JPS6439315A true JPS6439315A (en) 1989-02-09

Family

ID=16321090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19422887A Pending JPS6439315A (en) 1987-08-03 1987-08-03 Steel refining method

Country Status (1)

Country Link
JP (1) JPS6439315A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190028A (en) * 2006-11-23 2008-08-21 Huatian Engineering & Technology Corp Fine adjusting method for alloying

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136613A (en) * 1984-12-06 1986-06-24 Nippon Steel Corp Vacuum decarburization method of molten steel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136613A (en) * 1984-12-06 1986-06-24 Nippon Steel Corp Vacuum decarburization method of molten steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190028A (en) * 2006-11-23 2008-08-21 Huatian Engineering & Technology Corp Fine adjusting method for alloying

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