FR2156456A1 - Blast furnace combined operation - by blowing a reducing gas and an oxygen enriched flux - Google Patents

Blast furnace combined operation - by blowing a reducing gas and an oxygen enriched flux

Info

Publication number
FR2156456A1
FR2156456A1 FR7137684A FR7137684A FR2156456A1 FR 2156456 A1 FR2156456 A1 FR 2156456A1 FR 7137684 A FR7137684 A FR 7137684A FR 7137684 A FR7137684 A FR 7137684A FR 2156456 A1 FR2156456 A1 FR 2156456A1
Authority
FR
France
Prior art keywords
blowing
blast furnace
reducing gas
combined operation
oxygen enriched
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
FR7137684A
Other languages
French (fr)
Other versions
FR2156456B1 (en
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
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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to FR7137684A priority Critical patent/FR2156456A1/en
Publication of FR2156456A1 publication Critical patent/FR2156456A1/en
Application granted granted Critical
Publication of FR2156456B1 publication Critical patent/FR2156456B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents

Abstract

Blast furnace is operated by blowing a reducing gas into a zone in which a gas pressure drop rarely occurs esp. below the shaft and above the bosh, an enriched oxygen flux esp. contg. 21-40% O2 is simultaneously blown through the tuyeres to determine the most appropriate longitudinal furnace temp. distributions.
FR7137684A 1971-10-20 1971-10-20 Blast furnace combined operation - by blowing a reducing gas and an oxygen enriched flux Granted FR2156456A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7137684A FR2156456A1 (en) 1971-10-20 1971-10-20 Blast furnace combined operation - by blowing a reducing gas and an oxygen enriched flux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7137684A FR2156456A1 (en) 1971-10-20 1971-10-20 Blast furnace combined operation - by blowing a reducing gas and an oxygen enriched flux

Publications (2)

Publication Number Publication Date
FR2156456A1 true FR2156456A1 (en) 1973-06-01
FR2156456B1 FR2156456B1 (en) 1974-05-31

Family

ID=9084649

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7137684A Granted FR2156456A1 (en) 1971-10-20 1971-10-20 Blast furnace combined operation - by blowing a reducing gas and an oxygen enriched flux

Country Status (1)

Country Link
FR (1) FR2156456A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042147A1 (en) * 1980-06-12 1981-12-23 Harry Bruce Claflin Improved multi-purpose zone controlled blast furnace and method of producing hot metal, gasses and slags
EP0273420A2 (en) * 1986-12-27 1988-07-06 Nippon Kokan Kabushiki Kaisha A blast furnace method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790711A (en) * 1957-04-30 Molten
GB872062A (en) * 1957-12-26 1961-07-05 Texaco Development Corp Ore reduction process and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790711A (en) * 1957-04-30 Molten
GB872062A (en) * 1957-12-26 1961-07-05 Texaco Development Corp Ore reduction process and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042147A1 (en) * 1980-06-12 1981-12-23 Harry Bruce Claflin Improved multi-purpose zone controlled blast furnace and method of producing hot metal, gasses and slags
EP0273420A2 (en) * 1986-12-27 1988-07-06 Nippon Kokan Kabushiki Kaisha A blast furnace method
EP0273420A3 (en) * 1986-12-27 1988-08-03 Nippon Kokan Kabushiki Kaisha A blast furnace

Also Published As

Publication number Publication date
FR2156456B1 (en) 1974-05-31

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Legal Events

Date Code Title Description
ST Notification of lapse