JPS55104404A - Blast furnace operating method - Google Patents

Blast furnace operating method

Info

Publication number
JPS55104404A
JPS55104404A JP1203379A JP1203379A JPS55104404A JP S55104404 A JPS55104404 A JP S55104404A JP 1203379 A JP1203379 A JP 1203379A JP 1203379 A JP1203379 A JP 1203379A JP S55104404 A JPS55104404 A JP S55104404A
Authority
JP
Japan
Prior art keywords
sintered ore
rdi
furnace
particle size
size distribution
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
JP1203379A
Other languages
Japanese (ja)
Inventor
Seita Kamikawa
Isao Ogata
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 JP1203379A priority Critical patent/JPS55104404A/en
Publication of JPS55104404A publication Critical patent/JPS55104404A/en
Pending 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 stabilize the furnace situations by appropriately maintaining the furnace ventilation, by estimating the actual degradation degree from the temperature elevating speed of charged sintered ore, gas composition, and particle size distribution of sintered ore and RDI, and selectively charging sintered ore differing in RDI. CONSTITUTION:The reducing degradation degree of sintered ore is predetermined individually for particle size distribution, RDI, gas composition, and temperature elevation speed. In a blast furnace concerned, a sonde 1 is passed over the powder zone where the temperature of a charge 2 is about 900 deg.C or less, and is secured to the furnace body 3. The temperature elevation speed of the charge 2 and gas composition are found by means of magnetic sensor, thermometer, and gas sampling pipe furnished to the sonde 1. The actual degradation degree of sintered ore is estimated from the relation of these values with the particle size distribution, RDK and reducing degradation charging, and selected sintered ore having necessary RDI as one condition of maintaining the ventilation in the furnace shaft at the set point is charged.
JP1203379A 1979-02-05 1979-02-05 Blast furnace operating method Pending JPS55104404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1203379A JPS55104404A (en) 1979-02-05 1979-02-05 Blast furnace operating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1203379A JPS55104404A (en) 1979-02-05 1979-02-05 Blast furnace operating method

Publications (1)

Publication Number Publication Date
JPS55104404A true JPS55104404A (en) 1980-08-09

Family

ID=11794286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1203379A Pending JPS55104404A (en) 1979-02-05 1979-02-05 Blast furnace operating method

Country Status (1)

Country Link
JP (1) JPS55104404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017106064A (en) * 2015-12-08 2017-06-15 新日鐵住金株式会社 Method for reducing iron oxide raw material using shaft furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017106064A (en) * 2015-12-08 2017-06-15 新日鐵住金株式会社 Method for reducing iron oxide raw material using shaft furnace

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