JPS5792122A - Steel making method by converter - Google Patents

Steel making method by converter

Info

Publication number
JPS5792122A
JPS5792122A JP16671780A JP16671780A JPS5792122A JP S5792122 A JPS5792122 A JP S5792122A JP 16671780 A JP16671780 A JP 16671780A JP 16671780 A JP16671780 A JP 16671780A JP S5792122 A JPS5792122 A JP S5792122A
Authority
JP
Japan
Prior art keywords
converter
flux
cao
sio
slag
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
JP16671780A
Other languages
Japanese (ja)
Other versions
JPS6157365B2 (en
Inventor
Hiromi Nakamura
Shinji Kuriyama
Kenzo Yamada
Hidehiko Ogura
Genji Nakatani
Ryuichi Nakajima
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP16671780A priority Critical patent/JPS5792122A/en
Publication of JPS5792122A publication Critical patent/JPS5792122A/en
Publication of JPS6157365B2 publication Critical patent/JPS6157365B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the generation of Fe fume dust and perform decarbonization with the high yield of steel making by charging a CaO-Al2O3-SiO2 type flux into the molten iron after prerefining in a converter at the stage of oxygen top blowing refining.
CONSTITUTION: The molten iron removed beforehand of Si, P, S, etc. by prerefining is decarbonized by oxygen top blowing in a converter. At the stage of this oxygen top blowing refining, a flux of CaO-Al2O3-SiO2 type is charged into the molten iron after the decarbonization treatment in the converter. Thereby, foamable slag is formed on the melt surface and the generation of Fe fumes is suppressed. After thr end of the blowing, the slag is removed and the molten steel is contained in a ladle. The flux removed of the slag is reusable for the next blowing. Said flux contains 10W40% CaO, 50W70% SiO2, and 5W25% Al2O3 and its m. p. is preferably ≤1,200°C.
COPYRIGHT: (C)1982,JPO&Japio
JP16671780A 1980-11-28 1980-11-28 Steel making method by converter Granted JPS5792122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16671780A JPS5792122A (en) 1980-11-28 1980-11-28 Steel making method by converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16671780A JPS5792122A (en) 1980-11-28 1980-11-28 Steel making method by converter

Publications (2)

Publication Number Publication Date
JPS5792122A true JPS5792122A (en) 1982-06-08
JPS6157365B2 JPS6157365B2 (en) 1986-12-06

Family

ID=15836445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16671780A Granted JPS5792122A (en) 1980-11-28 1980-11-28 Steel making method by converter

Country Status (1)

Country Link
JP (1) JPS5792122A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228418A (en) * 1975-08-29 1977-03-03 Nippon Steel Corp Oxygen steel making process using low p and s pig iron as raw material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228418A (en) * 1975-08-29 1977-03-03 Nippon Steel Corp Oxygen steel making process using low p and s pig iron as raw material

Also Published As

Publication number Publication date
JPS6157365B2 (en) 1986-12-06

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