JPS6462408A - Production of molten metal from powdery ore - Google Patents

Production of molten metal from powdery ore

Info

Publication number
JPS6462408A
JPS6462408A JP62219044A JP21904487A JPS6462408A JP S6462408 A JPS6462408 A JP S6462408A JP 62219044 A JP62219044 A JP 62219044A JP 21904487 A JP21904487 A JP 21904487A JP S6462408 A JPS6462408 A JP S6462408A
Authority
JP
Japan
Prior art keywords
reducing agent
furnace
tuyeres
powdery
temp
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
JP62219044A
Other languages
Japanese (ja)
Other versions
JPH066729B2 (en
Inventor
Takashi Ushijima
Eiji Katayama
Hiroshi Itaya
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 JP21904487A priority Critical patent/JPH066729B2/en
Priority to CA000548243A priority patent/CA1337743C/en
Priority to BR8705045A priority patent/BR8705045A/en
Priority to KR1019870010960A priority patent/KR950005786B1/en
Priority to EP87114305A priority patent/EP0297167B1/en
Priority to DE87114305T priority patent/DE3787017T2/en
Publication of JPS6462408A publication Critical patent/JPS6462408A/en
Priority to AU52595/90A priority patent/AU627563B2/en
Priority to US07/518,333 priority patent/US5131942A/en
Publication of JPH066729B2 publication Critical patent/JPH066729B2/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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Iron (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

PURPOSE:To efficiently use fine powdery reducing agent and to prevent the variation of temp. in a furnace by charging powdery ore from tuyere at upper step and supplying coarse grain carbonic solid reducing agent from the furnace top part and fine powdery reducing agent from tuyeres at upper and lower steps dividedly in the smelting reduction furnace. CONSTITUTION:In the vertical type smelting reduction furnace 1, oxygen-contained gas is blown from the tuyeres 6, 7 arranged at upper and lower two steps through a distributor 8 and fluid bed 2 for the carbonic solid reducing agent at upper part of the furnace 1 and the reducing agent packing layer 3 at lower part are formed. The powdery ore is supplied from the tuyere 6 at the upper step through supplying device 11 and smelted and reduced at high temp. part, to produce the slag layer 4 and the molten metal layer 5 at the furnace bottom. In the above smelting metal producing method, the carbonic solid reducing agent to be changed is classified by a classifying device 12. The reducing agent having 3mm grain size obtd. by this is charged from the supplying hole 17 at furnace top. On the other hand, the reducing agent having 3mm is supplied as distributing into the tuyeres 6, 7 at the upper and lower steps through the distributor 14. By this method, the dispersion of the fine powdery reducing agent from exhaust gas duct 18 is prevented and it is efficiently used and the variety of the temp. in the packing layer 3 is prevented and stable operation is obtd.
JP21904487A 1987-06-30 1987-09-03 Method for producing molten metal from powdered ore Expired - Lifetime JPH066729B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP21904487A JPH066729B2 (en) 1987-09-03 1987-09-03 Method for producing molten metal from powdered ore
DE87114305T DE3787017T2 (en) 1987-06-30 1987-09-30 Method and device for producing liquid metal from ore particles.
BR8705045A BR8705045A (en) 1987-06-30 1987-09-30 OVEN AND PROCESS FOR THE PRODUCTION OF METAL IN MELTING FROM SPRAYED ORE
KR1019870010960A KR950005786B1 (en) 1987-06-30 1987-09-30 Method and apparatus for producing molten metal from powder ore
EP87114305A EP0297167B1 (en) 1987-06-30 1987-09-30 Method and apparatus for producing molten metal from powder state ore
CA000548243A CA1337743C (en) 1987-06-30 1987-09-30 Method and apparatus for producing molten metal from powder state ore
AU52595/90A AU627563B2 (en) 1987-06-30 1990-04-04 Method and apparatus for producing molten metal from powder state ore
US07/518,333 US5131942A (en) 1987-06-30 1990-05-04 Method for producing molten metal from powder state ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21904487A JPH066729B2 (en) 1987-09-03 1987-09-03 Method for producing molten metal from powdered ore

Publications (2)

Publication Number Publication Date
JPS6462408A true JPS6462408A (en) 1989-03-08
JPH066729B2 JPH066729B2 (en) 1994-01-26

Family

ID=16729381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21904487A Expired - Lifetime JPH066729B2 (en) 1987-06-30 1987-09-03 Method for producing molten metal from powdered ore

Country Status (1)

Country Link
JP (1) JPH066729B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117568629A (en) * 2023-10-27 2024-02-20 中国恩菲工程技术有限公司 A kind of chromite smelting method and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117568629A (en) * 2023-10-27 2024-02-20 中国恩菲工程技术有限公司 A kind of chromite smelting method and system

Also Published As

Publication number Publication date
JPH066729B2 (en) 1994-01-26

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