JPS5641307A - Increasing method for heat input in oxygen top blown steel making process - Google Patents

Increasing method for heat input in oxygen top blown steel making process

Info

Publication number
JPS5641307A
JPS5641307A JP11602979A JP11602979A JPS5641307A JP S5641307 A JPS5641307 A JP S5641307A JP 11602979 A JP11602979 A JP 11602979A JP 11602979 A JP11602979 A JP 11602979A JP S5641307 A JPS5641307 A JP S5641307A
Authority
JP
Japan
Prior art keywords
pipe
oxygen
converter
blowing
hydrocarbon
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
JP11602979A
Other languages
Japanese (ja)
Inventor
Shozo Murakami
Mutsuo Nakajima
Kazuo Ogahira
Yoshiaki Taniai
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 JP11602979A priority Critical patent/JPS5641307A/en
Publication of JPS5641307A publication Critical patent/JPS5641307A/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
    • C21C5/32—Blowing from above

Abstract

PURPOSE:To increase the heat input so as to improve remarkably the heating function for cold material to be heated in refining of steel using an oxygen top-blown converter having bottom- blowing function, by using a multiple pipe as a bottom-blowing nozzle, and by charging liquid fuel or liquid hydrocarbon through spaces at inside and outside of an oxygen gas pipe during melting period of cold material. CONSTITUTION:A nozzle set under the surface of molten metal of an oxygen top-blown converter having bottom-blowing function is made of multiple pipe at least not less than tripple structure. That is, a pipe 7 is placed at the center of a double pipe composed of an outer pipe 1 and an inner pipe 3, and blowing oxygen is introduced through the space 4 made between the inner pipe 3 and the pipe 7, cooling material such as hydrocarbon etc. for the nozzle through the space between the inner pipe 3 and the outer pipe 1, and neutral gas such as Ar, N2 through the pipe 7 during oxygen blowing. In heating and melting the cold material charged into the converter, oxygen is blown into the converter through the oxygen passage 4, simultaneously liquid fuel such as kerosene, or hydrocarbon such as propane is blown through the space 2 and the pipe 7 thereby burning the liquid fuel or the hydrocarbon with the oxygen so as to heat the gas, so that the cold material is heated and melted in a short time and the operation ratio of the converter is increased.
JP11602979A 1979-09-10 1979-09-10 Increasing method for heat input in oxygen top blown steel making process Pending JPS5641307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11602979A JPS5641307A (en) 1979-09-10 1979-09-10 Increasing method for heat input in oxygen top blown steel making process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11602979A JPS5641307A (en) 1979-09-10 1979-09-10 Increasing method for heat input in oxygen top blown steel making process

Publications (1)

Publication Number Publication Date
JPS5641307A true JPS5641307A (en) 1981-04-18

Family

ID=14676989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11602979A Pending JPS5641307A (en) 1979-09-10 1979-09-10 Increasing method for heat input in oxygen top blown steel making process

Country Status (1)

Country Link
JP (1) JPS5641307A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112501379A (en) * 2020-11-30 2021-03-16 钢铁研究总院 Vanadium extraction converter and top-bottom combined blowing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825617A (en) * 1971-08-04 1973-04-03
JPS54109016A (en) * 1977-12-10 1979-08-27 Maximilianshuette Eisenwerk Improvement of heat balance in steel making

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825617A (en) * 1971-08-04 1973-04-03
JPS54109016A (en) * 1977-12-10 1979-08-27 Maximilianshuette Eisenwerk Improvement of heat balance in steel making

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112501379A (en) * 2020-11-30 2021-03-16 钢铁研究总院 Vanadium extraction converter and top-bottom combined blowing method

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