JPS6447820A - Production of molten metal from powdery ore - Google Patents

Production of molten metal from powdery ore

Info

Publication number
JPS6447820A
JPS6447820A JP62200910A JP20091087A JPS6447820A JP S6447820 A JPS6447820 A JP S6447820A JP 62200910 A JP62200910 A JP 62200910A JP 20091087 A JP20091087 A JP 20091087A JP S6447820 A JPS6447820 A JP S6447820A
Authority
JP
Japan
Prior art keywords
dust
molten metal
furnace
stage tuyere
carbonic material
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
JP62200910A
Other languages
Japanese (ja)
Other versions
JPH042643B2 (en
Inventor
Hiroshi Itaya
Takashi Ushijima
Eiji Katayama
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 JP62200910A priority Critical patent/JPS6447820A/en
Publication of JPS6447820A publication Critical patent/JPS6447820A/en
Publication of JPH042643B2 publication Critical patent/JPH042643B2/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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting

Landscapes

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

Abstract

PURPOSE:To prevent variations in the components and temp. of molten metal by classifying the dust contained in exhaust gas at the time of producing the molten metal in a vertical type smelting reduction furnace and blowing the dust containing ore and flux from the upper stage tuyere and the dust containing carbonic material from lower stage tuyere into the furnace. CONSTITUTION:In the vertical type smelting reduction furnace 1, the carbonic material is supplied from a carbonic material supplying hole 16 and powdery ore is supplied into the furnace from the upper stage tuyere 6 together with high temp. oxygen- contained gas is blown from the lower stage tuyere 7 to produce molten metal 5. Then, the dust in the exhaust gas of the smelting reduction furnace is collected by a dust collector 10 for high temp. arranged on the way of an exhaust gas duct 15 and classified at the fixed value in the range of 0.1-0.5mm (preferably to about 0.3mm) by a dust classifier 11. In the classified dust, the dust mainly containing the carbonic material having larger than the fixed value is blown from the lower stage tuyere 7 and the dust mainly containing the ore and flux having less than the fixed size is blown from the upper stage tuyere 6 into the furnace, respectively. By this method, the carbonic material is effectively reused and the composition of the slag is stabilized.
JP62200910A 1987-08-13 1987-08-13 Production of molten metal from powdery ore Granted JPS6447820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62200910A JPS6447820A (en) 1987-08-13 1987-08-13 Production of molten metal from powdery ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62200910A JPS6447820A (en) 1987-08-13 1987-08-13 Production of molten metal from powdery ore

Publications (2)

Publication Number Publication Date
JPS6447820A true JPS6447820A (en) 1989-02-22
JPH042643B2 JPH042643B2 (en) 1992-01-20

Family

ID=16432300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62200910A Granted JPS6447820A (en) 1987-08-13 1987-08-13 Production of molten metal from powdery ore

Country Status (1)

Country Link
JP (1) JPS6447820A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004136A1 (en) * 1995-07-19 1997-02-06 Voest-Alpine Industrieanlagenbau Gmbh Process for producing liquid pig iron or semi-finished steel products and installation for implementing it
AT407052B (en) * 1998-08-13 2000-12-27 Voest Alpine Ind Anlagen METHOD FOR PRODUCING LIQUID PIG IRON

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004136A1 (en) * 1995-07-19 1997-02-06 Voest-Alpine Industrieanlagenbau Gmbh Process for producing liquid pig iron or semi-finished steel products and installation for implementing it
US5944871A (en) * 1995-07-19 1999-08-31 Voest Alpine Ind Anlagen Process for the production of molten pig iron or steel pre-products and a plant for carrying out the process
AT407052B (en) * 1998-08-13 2000-12-27 Voest Alpine Ind Anlagen METHOD FOR PRODUCING LIQUID PIG IRON

Also Published As

Publication number Publication date
JPH042643B2 (en) 1992-01-20

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