JPS5565313A - Steel manufacture with top blown oxygen - Google Patents

Steel manufacture with top blown oxygen

Info

Publication number
JPS5565313A
JPS5565313A JP13893278A JP13893278A JPS5565313A JP S5565313 A JPS5565313 A JP S5565313A JP 13893278 A JP13893278 A JP 13893278A JP 13893278 A JP13893278 A JP 13893278A JP S5565313 A JPS5565313 A JP S5565313A
Authority
JP
Japan
Prior art keywords
molten
slag
molten metal
blowing
oxygen
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
JP13893278A
Other languages
Japanese (ja)
Inventor
Kazuo Ogahira
Masazumi Hirai
Yoshio Sato
Akihiko Ochi
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.)
Nippon Steel Corp
Original Assignee
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP13893278A priority Critical patent/JPS5565313A/en
Publication of JPS5565313A publication Critical patent/JPS5565313A/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
    • C21C5/35—Blowing from above and 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 accelerate the slag formation of a slag making agent and to promote the contact of molten metal with the molten slag to accelerate the refining reaction of the molten metal, by blowing an inert gas into an oxygen top blown converter during oxygen blowing from a specific position at the furnace bottom. CONSTITUTION:In an oxygen top blown converter 12, pure oxygen is blown into the molten metal through a top blowing lance 11 to manufacture steel through refining, e.g., desiliconization, decarbonization, dephosphorization. At that time, an inert gas such as Ar etc. is blown into the molten metal through nozzles X, Y, Z or a, b, c, d made in the furnace bottom portion of a concentric circle of a diameter D' which is not larger than 3/4 that of the converter bottom D. A slag making agent such as granular lime may be mixed with the Ar gas. The quantity of the blowing gas is 0.025-0.5Nm<3> per ton molten per min. Hereby, the slag making agent is mixed excellently with the molten metal to form molten slag rapidly, bringing the molten slag into better contact with the molten metal, and accelerating the refining reaction of the molten steel.
JP13893278A 1978-11-13 1978-11-13 Steel manufacture with top blown oxygen Pending JPS5565313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13893278A JPS5565313A (en) 1978-11-13 1978-11-13 Steel manufacture with top blown oxygen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13893278A JPS5565313A (en) 1978-11-13 1978-11-13 Steel manufacture with top blown oxygen

Publications (1)

Publication Number Publication Date
JPS5565313A true JPS5565313A (en) 1980-05-16

Family

ID=15233505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13893278A Pending JPS5565313A (en) 1978-11-13 1978-11-13 Steel manufacture with top blown oxygen

Country Status (1)

Country Link
JP (1) JPS5565313A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757816A (en) * 1980-09-19 1982-04-07 Kawasaki Steel Corp Steel making method by composite top and bottom blown converter
FR2495187A1 (en) * 1980-12-02 1982-06-04 Siderurgie Fse Inst Rech PROCESS FOR PRODUCING METALLURGICAL CONTAINER FUND
JPS6223848U (en) * 1985-07-30 1987-02-13
KR102001997B1 (en) 2018-07-03 2019-07-19 정순구 Shoes with a functional sole part

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022709A (en) * 1973-06-18 1975-03-11
JPS518109A (en) * 1974-06-07 1976-01-22 British Steel Corp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022709A (en) * 1973-06-18 1975-03-11
JPS518109A (en) * 1974-06-07 1976-01-22 British Steel Corp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757816A (en) * 1980-09-19 1982-04-07 Kawasaki Steel Corp Steel making method by composite top and bottom blown converter
JPS635447B2 (en) * 1980-09-19 1988-02-03 Kawasaki Steel Co
FR2495187A1 (en) * 1980-12-02 1982-06-04 Siderurgie Fse Inst Rech PROCESS FOR PRODUCING METALLURGICAL CONTAINER FUND
JPS6223848U (en) * 1985-07-30 1987-02-13
JPH0136903Y2 (en) * 1985-07-30 1989-11-08
KR102001997B1 (en) 2018-07-03 2019-07-19 정순구 Shoes with a functional sole part

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