SE7702318L - BURNING IRON ORE BULLETS WITH MACROPORS JUST MADE TO PRODUCE THE SAME - Google Patents

BURNING IRON ORE BULLETS WITH MACROPORS JUST MADE TO PRODUCE THE SAME

Info

Publication number
SE7702318L
SE7702318L SE7702318A SE7702318A SE7702318L SE 7702318 L SE7702318 L SE 7702318L SE 7702318 A SE7702318 A SE 7702318A SE 7702318 A SE7702318 A SE 7702318A SE 7702318 L SE7702318 L SE 7702318L
Authority
SE
Sweden
Prior art keywords
pellets
iron ore
same
blast furnace
free
Prior art date
Application number
SE7702318A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE435937B (en
SE435937C (en
Inventor
I Fujita
M Onoda
F Kawaguchi
Y Takenaka
T Tsutaya
R Watanabe
Original Assignee
Kobe Steel Ltd
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
Priority claimed from JP2364776A external-priority patent/JPS52119403A/en
Priority claimed from JP8524876A external-priority patent/JPS5310313A/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of SE7702318L publication Critical patent/SE7702318L/en
Publication of SE435937B publication Critical patent/SE435937B/en
Publication of SE435937C publication Critical patent/SE435937C/en

Links

Classifications

    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

This invention relates to fired iron-ore pellets and a process for producing the same. The process includes the steps of: crushing iron ore to be pelletized; adding carbonaceous materials of grain sizes of 0.1 to 3 mm in diameter to the thus crushed iron ore in an amount of up to 4% by weight for mixing therewith; pelletizing a mixture thus prepared; and firing the pellets thus obtained; thereby providing pellets, in each of which there are intentionally dispersed macro-pores of sizes of 0.1 to 0.3 mm in diameter, at a ratio of up to 25% to the entire pores contained therein. Pellets produced by this process demonstrate superior properties in both high temperatures and in non-temperatures and have a high gas efficiency as well as being free of retardation of reduction even in an elevated temperature range in a blast furnace. These pellets are also free of the softening and sticking phenomena found in the prior art thereby improving the productivity of the blast furnace and reducing the coke ratio.
SE7702318A 1976-03-03 1977-03-02 BURN IRON ORE SHEETS WITH MACROPORES AND WAY TO MAKE IT SE435937C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2364776A JPS52119403A (en) 1976-03-03 1976-03-03 Sintered pellets of iron ore and its production method
JP8524876A JPS5310313A (en) 1976-07-16 1976-07-16 Roasted pellet of iron ore and its preparation

Publications (3)

Publication Number Publication Date
SE7702318L true SE7702318L (en) 1977-09-04
SE435937B SE435937B (en) 1984-10-29
SE435937C SE435937C (en) 1986-02-21

Family

ID=26361044

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7702318A SE435937C (en) 1976-03-03 1977-03-02 BURN IRON ORE SHEETS WITH MACROPORES AND WAY TO MAKE IT

Country Status (5)

Country Link
AU (1) AU499367B2 (en)
CA (1) CA1099518A (en)
DE (1) DE2709327C3 (en)
FR (1) FR2343054A1 (en)
SE (1) SE435937C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350523A (en) * 1979-04-12 1982-09-21 Kabushiki Kaisha Kobe Seiko Sho Porous iron ore pellets
DE3519666A1 (en) * 1985-06-01 1986-12-04 Metallgesellschaft Ag, 6000 Frankfurt METHOD FOR HARD-BURNING IRON ORE PELLETS ON A WALKING GRATE
JPH089739B2 (en) * 1989-08-23 1996-01-31 日本鋼管株式会社 Method for producing calcined agglomerated ore
KR100530815B1 (en) * 2000-10-30 2005-11-25 신닛뽄세이테쯔 카부시키카이샤 Metal oxide-containing green pellet for reducing furnace, method for production thereof, method for reduction thereof, and reduction facilities

Also Published As

Publication number Publication date
SE435937B (en) 1984-10-29
SE435937C (en) 1986-02-21
FR2343054B1 (en) 1980-03-07
AU2273977A (en) 1978-09-07
DE2709327C3 (en) 1980-06-12
FR2343054A1 (en) 1977-09-30
CA1099518A (en) 1981-04-21
DE2709327B2 (en) 1979-09-13
AU499367B2 (en) 1979-04-12
DE2709327A1 (en) 1977-09-15

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