JPS5785911A - Direct reduction and melting method for iron oxide - Google Patents

Direct reduction and melting method for iron oxide

Info

Publication number
JPS5785911A
JPS5785911A JP16297680A JP16297680A JPS5785911A JP S5785911 A JPS5785911 A JP S5785911A JP 16297680 A JP16297680 A JP 16297680A JP 16297680 A JP16297680 A JP 16297680A JP S5785911 A JPS5785911 A JP S5785911A
Authority
JP
Japan
Prior art keywords
fluidized
iron
furnace
gas
charged
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
JP16297680A
Other languages
Japanese (ja)
Other versions
JPH0152445B2 (en
Inventor
Yukinaga Katahashi
Tetsuo Horie
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP16297680A priority Critical patent/JPS5785911A/en
Publication of JPS5785911A publication Critical patent/JPS5785911A/en
Publication of JPH0152445B2 publication Critical patent/JPH0152445B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C21B13/002—Reduction of iron ores by passing through a heated column of carbon

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 produce molten pig iron efficiently by the use of low grade coal by passing iron oxide through the inside of the fluidized bed suspended with carbon bodies in a heating gaseous atmosphere, performing reduction, forming the fluidizied bed of reduced iron in the lower part thereof and introducing the same into a melting furnace. CONSTITUTION:Granules of general coal or low grade coal are charged from a hopper 3 into a fluidized furnace 1, and a gas elevated of temp. to about 850- 1,000 deg.C is ejected from air diffusion holes 4 to fluidize the carbon granules, whereby a fluidized layer 17 are formed by gas having strong reducibility and chars. Iron oxide is charged from a hopper 2 into a fluidized furnace 2, and is passed through fluidized layer 17, whereby reduced iron of about 90% rate of metallization is obtained. The reduced iron passes through an air diffusion plate 5 together with char, and forms a fluidized bed 18 in a funnel-like part 6. It is charged by each constant amt. into a melting furnace 8 by a dispensing device 30. Part of the gas of the furnace 1 is conducted to a plasma generator 11, and the reduced iron is melted or reduced by melting by the plasmatized reducing gas, whereby molten pig iron is obtained.
JP16297680A 1980-11-18 1980-11-18 Direct reduction and melting method for iron oxide Granted JPS5785911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16297680A JPS5785911A (en) 1980-11-18 1980-11-18 Direct reduction and melting method for iron oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16297680A JPS5785911A (en) 1980-11-18 1980-11-18 Direct reduction and melting method for iron oxide

Publications (2)

Publication Number Publication Date
JPS5785911A true JPS5785911A (en) 1982-05-28
JPH0152445B2 JPH0152445B2 (en) 1989-11-08

Family

ID=15764852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16297680A Granted JPS5785911A (en) 1980-11-18 1980-11-18 Direct reduction and melting method for iron oxide

Country Status (1)

Country Link
JP (1) JPS5785911A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59107013A (en) * 1982-12-09 1984-06-21 Ishikawajima Harima Heavy Ind Co Ltd Production of molten steel utilizing melt reduction
JPS6220807A (en) * 1985-07-18 1987-01-29 Kobe Steel Ltd Iron making method by melt reduction of iron ore
EP0864658A1 (en) * 1997-03-13 1998-09-16 The Boc Group, Inc. Refining iron ore
WO2002055744A3 (en) * 2001-01-12 2004-01-08 Outokumpu Oy Method for producing a mixture of iron ore and semi-coke

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53142313A (en) * 1977-05-18 1978-12-12 Kawasaki Steel Co Method of making molten reduced iron

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53142313A (en) * 1977-05-18 1978-12-12 Kawasaki Steel Co Method of making molten reduced iron

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59107013A (en) * 1982-12-09 1984-06-21 Ishikawajima Harima Heavy Ind Co Ltd Production of molten steel utilizing melt reduction
JPH036202B2 (en) * 1982-12-09 1991-01-29 Ishikawajima Harima Heavy Ind
JPS6220807A (en) * 1985-07-18 1987-01-29 Kobe Steel Ltd Iron making method by melt reduction of iron ore
JPH0581641B2 (en) * 1985-07-18 1993-11-15 Kobe Steel Ltd
EP0864658A1 (en) * 1997-03-13 1998-09-16 The Boc Group, Inc. Refining iron ore
WO2002055744A3 (en) * 2001-01-12 2004-01-08 Outokumpu Oy Method for producing a mixture of iron ore and semi-coke

Also Published As

Publication number Publication date
JPH0152445B2 (en) 1989-11-08

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