JPS5511168A - Refining method for low sulfer steel using bottom-blown converter - Google Patents

Refining method for low sulfer steel using bottom-blown converter

Info

Publication number
JPS5511168A
JPS5511168A JP8405778A JP8405778A JPS5511168A JP S5511168 A JPS5511168 A JP S5511168A JP 8405778 A JP8405778 A JP 8405778A JP 8405778 A JP8405778 A JP 8405778A JP S5511168 A JPS5511168 A JP S5511168A
Authority
JP
Japan
Prior art keywords
inert gas
blown converter
low
gas
blown
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
JP8405778A
Other languages
Japanese (ja)
Inventor
Kenichiro Suzuki
Kyoji Nakanishi
Nobuo Harada
Yoshihide Kato
Hideo Nakamura
Masaru Shibata
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 Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP8405778A priority Critical patent/JPS5511168A/en
Publication of JPS5511168A publication Critical patent/JPS5511168A/en
Pending 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
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/34—Blowing through the bath

Landscapes

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

Abstract

PURPOSE:To desulfurize molten metal effectivity, by blowing an inert gas, or mixed gas of an inert gas with oxygen, both together with desulfurizing agent into a bottom-blown converter through a bottom tuyere at the beginning of the steel refining. CONSTITUTION:An inert gas such as Ar, or N2, or an inert gas contg. O2 gas is blown together with desulfurizing agent such as lime etc. into a bottom-blown converter having been charged with molten cast iron through the inner pipe of a double pipe provided at the furnace bottom. At the beginning, FeO is reduced with Si, Mn etc. because the molten metal contains still a large amount of Si, Mn, and the desulfurization is effectively accelerated because oxygen partial pressure is low and few conditions preventing desulfurizing reaction are present. Being used in decarbonization, charge of iron ore for oxidation refining through the furnace opening causes no increase in harmful oxygen partial pressure so that effective desulfurization is performed.
JP8405778A 1978-07-12 1978-07-12 Refining method for low sulfer steel using bottom-blown converter Pending JPS5511168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8405778A JPS5511168A (en) 1978-07-12 1978-07-12 Refining method for low sulfer steel using bottom-blown converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8405778A JPS5511168A (en) 1978-07-12 1978-07-12 Refining method for low sulfer steel using bottom-blown converter

Publications (1)

Publication Number Publication Date
JPS5511168A true JPS5511168A (en) 1980-01-25

Family

ID=13819857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8405778A Pending JPS5511168A (en) 1978-07-12 1978-07-12 Refining method for low sulfer steel using bottom-blown converter

Country Status (1)

Country Link
JP (1) JPS5511168A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5199613A (en) * 1975-01-23 1976-09-02 Uss Eng & Consult

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5199613A (en) * 1975-01-23 1976-09-02 Uss Eng & Consult

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