JPS57137403A - Low-silicon operation method for blast furnace by mixed blowing of pulverized coal and basic material - Google Patents

Low-silicon operation method for blast furnace by mixed blowing of pulverized coal and basic material

Info

Publication number
JPS57137403A
JPS57137403A JP2136481A JP2136481A JPS57137403A JP S57137403 A JPS57137403 A JP S57137403A JP 2136481 A JP2136481 A JP 2136481A JP 2136481 A JP2136481 A JP 2136481A JP S57137403 A JPS57137403 A JP S57137403A
Authority
JP
Japan
Prior art keywords
pulverized coal
blowing
blast furnace
limestone
blown
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
JP2136481A
Other languages
Japanese (ja)
Other versions
JPS597327B2 (en
Inventor
Hisao Hamada
Nobuo Tsuchitani
Hisamitsu Koitabashi
Toshihiro Inatani
Kyoji Okabe
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 JP2136481A priority Critical patent/JPS597327B2/en
Publication of JPS57137403A publication Critical patent/JPS57137403A/en
Publication of JPS597327B2 publication Critical patent/JPS597327B2/en
Expired 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
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part
    • C21B5/026—Injection of the additives into the melting part of plastic material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C21B5/023—Injection of the additives into the melting part

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 reduce the contents of Si and S in pig iron simultaneously by blowing basic materials such as limestone and dolomite together with pulverized coal through a blast tuyere into a blast furnace. CONSTITUTION:Pulverized coal is blown from a raw material hopper 4 into a blast furnace 1 through the blowing nozzle 11 of a blast tuyere 3 via an intermediate tank 5, a pressure feed tank 6 and a transport pipe 10. At the same time, basic materials such as limestone, dolomite, or their calcined matters or hydroxide of calcium and magnesium which are ground to about the same grain sizes as those of the pulverized coal are blown into the furnace 1 through the nozzle 11 of the tuyere 3 via a hopper 7, an intermediate tank 8, a pressure feed tank 9 and the pipe 10. The rate of blowing of additive materials such as limestone is set at about 5-50kg per ton of pig iron while the ordinary rate of pulverized coal is about 30-150kg. Thereby, the additive materials are blown simply by modifying a part of a blowing installation.
JP2136481A 1981-02-18 1981-02-18 Low-Si operation method for blast furnace by mixed injection of pulverized coal and basic substance Expired JPS597327B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2136481A JPS597327B2 (en) 1981-02-18 1981-02-18 Low-Si operation method for blast furnace by mixed injection of pulverized coal and basic substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2136481A JPS597327B2 (en) 1981-02-18 1981-02-18 Low-Si operation method for blast furnace by mixed injection of pulverized coal and basic substance

Publications (2)

Publication Number Publication Date
JPS57137403A true JPS57137403A (en) 1982-08-25
JPS597327B2 JPS597327B2 (en) 1984-02-17

Family

ID=12053032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2136481A Expired JPS597327B2 (en) 1981-02-18 1981-02-18 Low-Si operation method for blast furnace by mixed injection of pulverized coal and basic substance

Country Status (1)

Country Link
JP (1) JPS597327B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609806A (en) * 1983-06-28 1985-01-18 Kawasaki Steel Corp Operating method of blast furnace by which powder is blown through tuyere
JPS61149403A (en) * 1984-12-25 1986-07-08 Nippon Kokan Kk <Nkk> Method for carrying out low-s operation of blast furnace
JP2002235105A (en) * 2001-02-07 2002-08-23 Kobe Steel Ltd METHOD FOR OPERATING LOW Si MOLTEN IRON BY INJECTION OF PULVERIZED FINE COAL AT HIGH RATIO IN BLAST FURNACE
JP2007239014A (en) * 2006-03-08 2007-09-20 Nippon Steel Corp Method for operating blast furnace
CN100351396C (en) * 2006-04-10 2007-11-28 刘虎生 Chemical additive for pulverized coal injection in blast furnace

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609806A (en) * 1983-06-28 1985-01-18 Kawasaki Steel Corp Operating method of blast furnace by which powder is blown through tuyere
JPS61149403A (en) * 1984-12-25 1986-07-08 Nippon Kokan Kk <Nkk> Method for carrying out low-s operation of blast furnace
JPS6365729B2 (en) * 1984-12-25 1988-12-16 Nippon Kokan Kk
JP2002235105A (en) * 2001-02-07 2002-08-23 Kobe Steel Ltd METHOD FOR OPERATING LOW Si MOLTEN IRON BY INJECTION OF PULVERIZED FINE COAL AT HIGH RATIO IN BLAST FURNACE
JP2007239014A (en) * 2006-03-08 2007-09-20 Nippon Steel Corp Method for operating blast furnace
CN100351396C (en) * 2006-04-10 2007-11-28 刘虎生 Chemical additive for pulverized coal injection in blast furnace

Also Published As

Publication number Publication date
JPS597327B2 (en) 1984-02-17

Similar Documents

Publication Publication Date Title
DE69017928D1 (en) Process for the pneumatic and metered blowing of fine-grained solids into a container under variable pressure.
US5296015A (en) Method for the pneumatic transport of large iron-bearing particles
US2918365A (en) Method for controlling compositions of molten pig iron and slag in a blast furnace
JPS57137403A (en) Low-silicon operation method for blast furnace by mixed blowing of pulverized coal and basic material
GB1008723A (en) Improvements in or relating to a blowing device
GB1294931A (en)
CN102242230A (en) Method for blowing quicklime powder
CA1178061A (en) Process for the continuous blowing of fine-particle reducing agents, especially mineral oil, into a shaft furnace
JPS54103702A (en) Method of producing non-baked pelletized ore for making pig iron
GB1464342A (en) Method and apparatus for pelletizing molten slag
JPS57137402A (en) Low-silicon operation method for blast furnace in blowing of pulverized coal
US3323905A (en) Method and apparatus for adding agents for forming and/or treating the slag in iron baths
AU744597B2 (en) Method for producing zinc using the is process in an is shaft furnace and corresponding is shaft furnace
GB1222236A (en) Improvements in or relating to iron making
SU670616A1 (en) Blast furnace melting method
US4838934A (en) Process for a direct reduction of iron oxide containing materials in a rotary kiln
US4092406A (en) Ferro lime
RU2012596C1 (en) Method of carrying out blast furnace melting and apparatus for performing the same
GB1258235A (en)
JPH06136456A (en) Production of sintered ore
JPS6428310A (en) Method for controlling si concentration molten iron in blast furnace
JPS61266507A (en) Method for transporting granular particle to be blown in to blast furnace
JPS579840A (en) Unfired briquetted ore for iron manufacture
JPH01100212A (en) Operational method for blowing fine material in blast furnace
GB958136A (en) An improved process and apparatus for effecting pneumatic conveyance of solids