SE8305260D0 - STALFRAMSTELLNINGSFORFARANDE - Google Patents

STALFRAMSTELLNINGSFORFARANDE

Info

Publication number
SE8305260D0
SE8305260D0 SE8305260A SE8305260A SE8305260D0 SE 8305260 D0 SE8305260 D0 SE 8305260D0 SE 8305260 A SE8305260 A SE 8305260A SE 8305260 A SE8305260 A SE 8305260A SE 8305260 D0 SE8305260 D0 SE 8305260D0
Authority
SE
Sweden
Prior art keywords
iron
charge material
slag
oxide content
oxide
Prior art date
Application number
SE8305260A
Other languages
Swedish (sv)
Other versions
SE448380C (en
SE8305260L (en
SE448380B (en
Inventor
John Olof Edstrom
Roger Selin
Original Assignee
John Olof Edstrom
Roger Selin
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 John Olof Edstrom, Roger Selin filed Critical John Olof Edstrom
Priority to SE8305260A priority Critical patent/SE448380C/en
Publication of SE8305260D0 publication Critical patent/SE8305260D0/en
Priority to GB08424245A priority patent/GB2148327B/en
Publication of SE8305260L publication Critical patent/SE8305260L/en
Publication of SE448380B publication Critical patent/SE448380B/en
Publication of SE448380C publication Critical patent/SE448380C/en

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
    • C21B13/008—Use of special additives or fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

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

Abstract

When manufacturing liquid steel from highly concentrated iron-ore concentrate, especially iron-ore concentrate containing phosphorous, a charge material is produced by sintering a mixture comprising substantially the afore-mentioned concentrate and basic slag-forming agents including CaO and MgO. The composition of the mixture is adjusted so that the charge material contains calcium oxide in an amount corresponding to at least 35% of the total weight of the non-iron oxide content of the charge material, and calcium oxide and magnesium oxide in a total amount corresponding to at least 55% of the total weight of the non-iron oxide content of the charge material, and also exhibits a weight ratio of CaO: MgO of at least 1.3. The charge material is reduced in solid phase to form sponge iron having a degree of metallization of at least 80 %,whereafter the sponge iron, optionally together with another iron-bearing material, is smelted in a steel furnace under such conditions as to maintain in the slag formed during the smelting process an iron-oxide content of at least about 5% by weight, and the resultant liquid steel and slag are separated from one another.
SE8305260A 1983-09-28 1983-09-28 Process for the preparation of high-grade crude steel, in particular phosphorus-containing iron ore and charge material for use in the process SE448380C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8305260A SE448380C (en) 1983-09-28 1983-09-28 Process for the preparation of high-grade crude steel, in particular phosphorus-containing iron ore and charge material for use in the process
GB08424245A GB2148327B (en) 1983-09-28 1984-09-26 Making liquid steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8305260A SE448380C (en) 1983-09-28 1983-09-28 Process for the preparation of high-grade crude steel, in particular phosphorus-containing iron ore and charge material for use in the process

Publications (4)

Publication Number Publication Date
SE8305260D0 true SE8305260D0 (en) 1983-09-28
SE8305260L SE8305260L (en) 1985-03-29
SE448380B SE448380B (en) 1987-02-16
SE448380C SE448380C (en) 1994-01-17

Family

ID=20352673

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8305260A SE448380C (en) 1983-09-28 1983-09-28 Process for the preparation of high-grade crude steel, in particular phosphorus-containing iron ore and charge material for use in the process

Country Status (2)

Country Link
GB (1) GB2148327B (en)
SE (1) SE448380C (en)

Also Published As

Publication number Publication date
GB8424245D0 (en) 1984-10-31
GB2148327A (en) 1985-05-30
SE448380C (en) 1994-01-17
GB2148327B (en) 1987-06-24
SE8305260L (en) 1985-03-29
SE448380B (en) 1987-02-16

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