SE7906801L - PROCEDURE FOR THE MANUFACTURE OF RAILS FROM SULPHIDICAL IRON MATERIALS - Google Patents

PROCEDURE FOR THE MANUFACTURE OF RAILS FROM SULPHIDICAL IRON MATERIALS

Info

Publication number
SE7906801L
SE7906801L SE7906801A SE7906801A SE7906801L SE 7906801 L SE7906801 L SE 7906801L SE 7906801 A SE7906801 A SE 7906801A SE 7906801 A SE7906801 A SE 7906801A SE 7906801 L SE7906801 L SE 7906801L
Authority
SE
Sweden
Prior art keywords
iron
sulphide
melt
sulphidical
rails
Prior art date
Application number
SE7906801A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE417614B (en
Inventor
S A Petersson
Original Assignee
Boliden Ab
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 SE7708462A external-priority patent/SE406929B/en
Application filed by Boliden Ab filed Critical Boliden Ab
Priority to SE7906801A priority Critical patent/SE417614B/en
Publication of SE7906801L publication Critical patent/SE7906801L/en
Publication of SE417614B publication Critical patent/SE417614B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B15/00—Other processes for the manufacture of iron from iron compounds

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

The invention relates to a process for making crude iron from a material containing iron sulphide, in which process the iron-containing sulphide-type material is introduced into the hearth of a furnace and melted there with a silica-containing material and oxygen. This gives an iron silicate melt, while the sulphur bound in the sulphide form is burned off. The resulting melt contains about 70-90 wt-% of iron, calculated as ferrous oxide. A reducing agent is then added to the melt in such a way that the iron content calculated as ferrous oxide is reduced to about 60 wt-% or less in the presence of lime and/or other fluxes, and the crude iron formed is separated off. The iron content of the iron silicate melt is then raised by adding more material containing iron sulphide, together with oxygen for melting, as well as a reducing agent for further reduction. <IMAGE>
SE7906801A 1977-07-22 1979-08-14 Process for making crude iron from a material containing iron sulphide SE417614B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE7906801A SE417614B (en) 1977-07-22 1979-08-14 Process for making crude iron from a material containing iron sulphide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7708462A SE406929B (en) 1977-07-22 1977-07-22 PROCEDURE FOR THE MANUFACTURE OF IRON SULFID-CONTAINING RAILS
SE7906801A SE417614B (en) 1977-07-22 1979-08-14 Process for making crude iron from a material containing iron sulphide

Publications (2)

Publication Number Publication Date
SE7906801L true SE7906801L (en) 1979-08-14
SE417614B SE417614B (en) 1981-03-30

Family

ID=26656843

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7906801A SE417614B (en) 1977-07-22 1979-08-14 Process for making crude iron from a material containing iron sulphide

Country Status (1)

Country Link
SE (1) SE417614B (en)

Also Published As

Publication number Publication date
SE417614B (en) 1981-03-30

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