JPS64213A - Operation of smelting reduction furnace - Google Patents

Operation of smelting reduction furnace

Info

Publication number
JPS64213A
JPS64213A JP18775687A JP18775687A JPS64213A JP S64213 A JPS64213 A JP S64213A JP 18775687 A JP18775687 A JP 18775687A JP 18775687 A JP18775687 A JP 18775687A JP S64213 A JPS64213 A JP S64213A
Authority
JP
Japan
Prior art keywords
ore
tuyeres
coke
high temp
condition
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
JP18775687A
Other languages
Japanese (ja)
Other versions
JPH0730376B2 (en
JPH01213A (en
Inventor
Katsutoshi Igawa
Shinobu Takeuchi
Kazuhiko Sato
Takashi Ushijima
Hisao Hamada
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 JP18775687A priority Critical patent/JPH0730376B2/en
Publication of JPS64213A publication Critical patent/JPS64213A/en
Publication of JPH01213A publication Critical patent/JPH01213A/en
Publication of JPH0730376B2 publication Critical patent/JPH0730376B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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 stabilize furnace operation and to improve energy efficiency by blowing ore containing metal oxide from upper step tuyeres together with high temp. air and controlling blasting condition and ore supplying condition so as to satisfy the specific relational expression. CONSTITUTION:The high temp. oxygen enriched air is blasted to packing layer for carbon series solid reducing agent charged from a hopper 2 from plural tuyeres 6, 11 composing of at least two steps through heat exchanger 9, and the ore is blown from a hopper 1 through the upper step tuyeres 6 together with the high temp. air to obtain molten metal. In a shaft type smelting reduction furnace 5, the blasting condition and the ore supplying condition are controlled so as to satisfy the equation (L/G)X(SCRT/AT)=0.25-0.6. Herein, L; molten generating layer = CA+S+YM+YS(m<3>/h), CA; ash from fuel coke, S; quantity of slag making material, YM; metal quantity in the ore, YS; gangue in the ore, G; generating gas quantity (Nm<3>/h), SCRT=n.SR.aT.H, n; number of pair in the two step tuyeres, SR; 0.0589DR<2>, DR=8.81X10<-3>XU/D<1/2>XDH, U; flowing velocity of the tuyere (m/sec), DP; average diameter of the coke (m), DH; diameter of the tuyere (m), aT=6(1-epsilon)/(phi.DP), epsilon; packing ratio of the coke, phi; coefficient of coke shape, H; interval of tuyeres (m), AT; cross sectional area of the furnace bottom (m<2>).
JP18775687A 1987-03-30 1987-07-29 Operation method of smelting reduction furnace Expired - Fee Related JPH0730376B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18775687A JPH0730376B2 (en) 1987-03-30 1987-07-29 Operation method of smelting reduction furnace

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-74534 1987-03-30
JP7453487 1987-03-30
JP18775687A JPH0730376B2 (en) 1987-03-30 1987-07-29 Operation method of smelting reduction furnace

Publications (3)

Publication Number Publication Date
JPS64213A true JPS64213A (en) 1989-01-05
JPH01213A JPH01213A (en) 1989-01-05
JPH0730376B2 JPH0730376B2 (en) 1995-04-05

Family

ID=26415689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18775687A Expired - Fee Related JPH0730376B2 (en) 1987-03-30 1987-07-29 Operation method of smelting reduction furnace

Country Status (1)

Country Link
JP (1) JPH0730376B2 (en)

Also Published As

Publication number Publication date
JPH0730376B2 (en) 1995-04-05

Similar Documents

Publication Publication Date Title
CN1034742C (en) Process for production of iron
US4849015A (en) Method for two-stage melt reduction of iron ore
CN1044386C (en) A method for intensifying the reactions in metallurgical reaction vessels
CN1078499A (en) Smelting reduction method with high productivity
CN1007160B (en) Method of operating blast furnace
US5149363A (en) Process for smelting or melting ferrous or non-ferrous metal from self-reducing agglomerates or metal
US2598735A (en) Iron oxide reduction
US5632953A (en) Process and device for melting iron metallurgical materials in a coke-fired cupola
PL194819B1 (en) Method of obtaining directly reduced iron along with lowered fuel consumption and lowered carbon monoxide emission
JPH0723515B2 (en) Reduction method of iron-containing chromium ore
JPS64213A (en) Operation of smelting reduction furnace
JP3511784B2 (en) Raw material charging method for vertical iron scrap melting furnace
US5336296A (en) Method of obtaining steel in a liquid bath and the device to carry it out
CN1570153A (en) One and half step melting deacidizing iron-smelting method
AU680212B2 (en) Metallurgical processes and apparatus
JPH06108132A (en) Cylindrical furnace and production of molten iron using this furnace
US2559213A (en) Method for producing metals in blast furnaces
JPS63166914A (en) High oxygen-rich blasting blast furnace
KR100356156B1 (en) A method for promoting combustibility in balst furnace
JPS63195207A (en) Production of molten iron
JPH032306A (en) Production of molten pig iron combined with recovery of rare metal
JP3523720B2 (en) Scrap melting method
JP2002003917A (en) Method for supplying oxygen in vertical melting furnace
JPS648208A (en) Production of molten metal from powdery ore
JPH10204512A (en) Operation of vertical scrap melting furnace

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees