JPS6465207A - Method for controlling furnace core solid reducing agent layer in blast furnace operation - Google Patents

Method for controlling furnace core solid reducing agent layer in blast furnace operation

Info

Publication number
JPS6465207A
JPS6465207A JP22098187A JP22098187A JPS6465207A JP S6465207 A JPS6465207 A JP S6465207A JP 22098187 A JP22098187 A JP 22098187A JP 22098187 A JP22098187 A JP 22098187A JP S6465207 A JPS6465207 A JP S6465207A
Authority
JP
Japan
Prior art keywords
coke
furnace
blast furnace
good
air permeability
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
JP22098187A
Other languages
Japanese (ja)
Other versions
JPH0637649B2 (en
Inventor
Mitsutoshi Isobe
Yoshio Kimura
Shoken Shimizu
Ryuichi Hori
Fumio Noma
Tsunao Kamijo
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP62220981A priority Critical patent/JPH0637649B2/en
Priority to CA000576240A priority patent/CA1338098C/en
Priority to DE3889399T priority patent/DE3889399T2/en
Priority to AU21792/88A priority patent/AU613399C/en
Priority to EP88114291A priority patent/EP0306026B1/en
Priority to US07/239,655 priority patent/US4963186A/en
Publication of JPS6465207A publication Critical patent/JPS6465207A/en
Publication of JPH0637649B2 publication Critical patent/JPH0637649B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21B5/008—Composition or distribution of the charge

Landscapes

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

Abstract

PURPOSE:To improve the air permeability in the furnace core part of a blast furnace so that the blast furnace waves are stabilized, the operating efficiency of the blast furnace is improved and the life of the blast furnace is extended by charging a specified amt. of good-quality coke having excellent air permeability to the furnace core part at the time of the blast furnace operation. CONSTITUTION:The good-quality lump coke CB having the excellent air permeability and liquid permeability is charged into th central part of an ore layer O and thereafter, the ordinary coke CA is charged around the coke CB in order to improve the air permeability in the furnace core part and to stabilize the furnace waves at the time of forming raw material layers by alternately charging the coke CA and the ore O from the blast furnace top. A relation rt>=0.03Rt is maintained between the radius Rt of the raw material layer in the furnace top part and the radius rt in the axial central part of the furnace and the ratio of the good-quality coke CB to be charged to the rt part is maintained at >=0.2% of the total coke quantity so that the ratio of the good-quality coke occupied in the furnace core coke C0 in the bottom part attains about >=5%.
JP62220981A 1987-09-03 1987-09-03 Control method of core reducing agent layer in blast furnace operation Expired - Lifetime JPH0637649B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP62220981A JPH0637649B2 (en) 1987-09-03 1987-09-03 Control method of core reducing agent layer in blast furnace operation
CA000576240A CA1338098C (en) 1987-09-03 1988-08-31 Method for operating blast furnace
DE3889399T DE3889399T2 (en) 1987-09-03 1988-09-01 Process for operating a blast furnace.
AU21792/88A AU613399C (en) 1987-09-03 1988-09-01 Method for operating blast furnace
EP88114291A EP0306026B1 (en) 1987-09-03 1988-09-01 Method for operating blast furnace
US07/239,655 US4963186A (en) 1987-09-03 1988-09-02 Method for operating blast furnace by adding solid reducing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62220981A JPH0637649B2 (en) 1987-09-03 1987-09-03 Control method of core reducing agent layer in blast furnace operation

Publications (2)

Publication Number Publication Date
JPS6465207A true JPS6465207A (en) 1989-03-10
JPH0637649B2 JPH0637649B2 (en) 1994-05-18

Family

ID=16759598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62220981A Expired - Lifetime JPH0637649B2 (en) 1987-09-03 1987-09-03 Control method of core reducing agent layer in blast furnace operation

Country Status (1)

Country Link
JP (1) JPH0637649B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6090181A (en) * 1994-11-09 2000-07-18 Kawasaki Steel Corporation Blast furnace operating method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5516203A (en) * 1978-07-12 1980-02-04 Ajinomoto Co Inc Measuring method of activity of microbe
JPS5562106A (en) * 1978-10-30 1980-05-10 Nippon Steel Corp Raw material charging method for blast furnace
JPS563882A (en) * 1979-06-26 1981-01-16 Taki Sangyo Kk Support for heater of electric furnace
JPS57174403A (en) * 1981-04-21 1982-10-27 Nippon Steel Corp Operation method for blast furnace
JPS6056003A (en) * 1983-09-02 1985-04-01 Kobe Steel Ltd Method for charging coke into blast furnace
JPS6142896U (en) * 1984-08-21 1986-03-19 株式会社東芝 electrical equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5516203A (en) * 1978-07-12 1980-02-04 Ajinomoto Co Inc Measuring method of activity of microbe
JPS5562106A (en) * 1978-10-30 1980-05-10 Nippon Steel Corp Raw material charging method for blast furnace
JPS563882A (en) * 1979-06-26 1981-01-16 Taki Sangyo Kk Support for heater of electric furnace
JPS57174403A (en) * 1981-04-21 1982-10-27 Nippon Steel Corp Operation method for blast furnace
JPS6056003A (en) * 1983-09-02 1985-04-01 Kobe Steel Ltd Method for charging coke into blast furnace
JPS6142896U (en) * 1984-08-21 1986-03-19 株式会社東芝 electrical equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6090181A (en) * 1994-11-09 2000-07-18 Kawasaki Steel Corporation Blast furnace operating method

Also Published As

Publication number Publication date
JPH0637649B2 (en) 1994-05-18

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