JPS5732308A - Method for operating blast furnace - Google Patents

Method for operating blast furnace

Info

Publication number
JPS5732308A
JPS5732308A JP10701280A JP10701280A JPS5732308A JP S5732308 A JPS5732308 A JP S5732308A JP 10701280 A JP10701280 A JP 10701280A JP 10701280 A JP10701280 A JP 10701280A JP S5732308 A JPS5732308 A JP S5732308A
Authority
JP
Japan
Prior art keywords
furnace
heat flow
blast furnace
solidified layer
refractories
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
JP10701280A
Other languages
Japanese (ja)
Other versions
JPS5933162B2 (en
Inventor
Hideho Kubo
Tetsuji Nishiyama
Takeshi Ikeno
Kazuo Ichifuji
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 JP10701280A priority Critical patent/JPS5933162B2/en
Publication of JPS5732308A publication Critical patent/JPS5732308A/en
Publication of JPS5933162B2 publication Critical patent/JPS5933162B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • C21B7/106—Cooling of the furnace bottom

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Blast Furnaces (AREA)

Abstract

PURPOSE:To extend the life of furnace bottom refractories by measuring heat flow flux at the outside wall of the furnace, estimating the point of the time when a molten iron solidified layer attains less than prescribed thickness and blowing out the blast furnace until the solidified layer is restored. CONSTITUTION:The heat flow flux flowing from the inside of a furnace toward a shell 6 is measured with a heat flow meter 4 installed to the shell 6. The thickness of a solidified layer 8 formed on the inside surface of furnace bottom refractories 1 is estimated from the measured value of this heat flow flux, and if this estimated value attains less than the prescribed thickness, the blast furnace is temporarily blown out. Then, when the layer 8 grows on the refractories 1 upon lapse of a prescribed time, blasting is started. Hence, the life of the blast furnace is extended by repeating such operation.
JP10701280A 1980-08-04 1980-08-04 Blast furnace operating method Expired JPS5933162B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10701280A JPS5933162B2 (en) 1980-08-04 1980-08-04 Blast furnace operating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10701280A JPS5933162B2 (en) 1980-08-04 1980-08-04 Blast furnace operating method

Publications (2)

Publication Number Publication Date
JPS5732308A true JPS5732308A (en) 1982-02-22
JPS5933162B2 JPS5933162B2 (en) 1984-08-14

Family

ID=14448256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10701280A Expired JPS5933162B2 (en) 1980-08-04 1980-08-04 Blast furnace operating method

Country Status (1)

Country Link
JP (1) JPS5933162B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60184607A (en) * 1984-02-29 1985-09-20 Kawasaki Steel Corp Operating method of blast furnace
JPS60184606A (en) * 1984-02-29 1985-09-20 Kawasaki Steel Corp Supervising method of furnace bottom of blast furnace
JP6947343B1 (en) * 2020-04-30 2021-10-13 Ｊｆｅスチール株式会社 Fluctuation detection method of solidified layer and blast furnace operation method
WO2021220751A1 (en) * 2020-04-30 2021-11-04 Ｊｆｅスチール株式会社 Method for detecting fluctuation in coagulation layer and blast furnace operation method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60184607A (en) * 1984-02-29 1985-09-20 Kawasaki Steel Corp Operating method of blast furnace
JPS60184606A (en) * 1984-02-29 1985-09-20 Kawasaki Steel Corp Supervising method of furnace bottom of blast furnace
JP6947343B1 (en) * 2020-04-30 2021-10-13 Ｊｆｅスチール株式会社 Fluctuation detection method of solidified layer and blast furnace operation method
WO2021220751A1 (en) * 2020-04-30 2021-11-04 Ｊｆｅスチール株式会社 Method for detecting fluctuation in coagulation layer and blast furnace operation method
CN115485396A (en) * 2020-04-30 2022-12-16 杰富意钢铁株式会社 Detection method of change in solidified layer and operation method of blast furnace
US12540363B2 (en) 2020-04-30 2026-02-03 Jfe Steel Corporation Method for detecting fluctuation of solidified layer and method for operating blast furnace

Also Published As

Publication number Publication date
JPS5933162B2 (en) 1984-08-14

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