JPS54141309A - Reducing blow out method for blast furnace - Google Patents

Reducing blow out method for blast furnace

Info

Publication number
JPS54141309A
JPS54141309A JP4926578A JP4926578A JPS54141309A JP S54141309 A JPS54141309 A JP S54141309A JP 4926578 A JP4926578 A JP 4926578A JP 4926578 A JP4926578 A JP 4926578A JP S54141309 A JPS54141309 A JP S54141309A
Authority
JP
Japan
Prior art keywords
blast
tuyere
furnace
blow out
blast furnace
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
JP4926578A
Other languages
Japanese (ja)
Other versions
JPS577203B2 (en
Inventor
Takehiko Miyamoto
Kazuo Kanai
Keitaro Hirai
Norio Saito
Akira Maki
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 JP4926578A priority Critical patent/JPS54141309A/en
Publication of JPS54141309A publication Critical patent/JPS54141309A/en
Publication of JPS577203B2 publication Critical patent/JPS577203B2/ja
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

Abstract

PURPOSE:To prevent explosion in reducing blow out of a blast furnace by opening the peep hole cover of a tuyere under the conditions of blast from the tuyere when a burden level reaches the tuyere and by stopping blast to automatically draw the air through the peep hole. CONSTITUTION:In reducing blow out of a blast furnace, blast form tuyere 4 is gradually reduced as burden 8 falls to allow the level of burden 8 to reach level 3 of tuyere 4. By opening conver 6 of peep hole 9 of tuyere 4, part of blast is released out of hole 9, yet blast is continued in th furnace through branch pipe 7. The blast through pipe 7 is then stopped, whereby the ventilating state at hole 9 is reversed to blow air from the outside into blast furnace 5 through pipe 7. Thus, combustion in furnace 5 is maintained to prevent explosion.
JP4926578A 1978-04-27 1978-04-27 Reducing blow out method for blast furnace Granted JPS54141309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4926578A JPS54141309A (en) 1978-04-27 1978-04-27 Reducing blow out method for blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4926578A JPS54141309A (en) 1978-04-27 1978-04-27 Reducing blow out method for blast furnace

Publications (2)

Publication Number Publication Date
JPS54141309A true JPS54141309A (en) 1979-11-02
JPS577203B2 JPS577203B2 (en) 1982-02-09

Family

ID=12825989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4926578A Granted JPS54141309A (en) 1978-04-27 1978-04-27 Reducing blow out method for blast furnace

Country Status (1)

Country Link
JP (1) JPS54141309A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664245U (en) * 1979-10-20 1981-05-29
US6717306B1 (en) * 1999-04-06 2004-04-06 Namiki Seimitsu Hoseki Kabushiki Kaisha Coreless motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664245U (en) * 1979-10-20 1981-05-29
JPS6033778Y2 (en) * 1979-10-20 1985-10-08 ヤンマー農機株式会社 Combine lifting device
US6717306B1 (en) * 1999-04-06 2004-04-06 Namiki Seimitsu Hoseki Kabushiki Kaisha Coreless motor

Also Published As

Publication number Publication date
JPS577203B2 (en) 1982-02-09

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