NL7412035A - Direct reduction of oxides to metal - partic for use in producing crude iron or steel - Google Patents

Direct reduction of oxides to metal - partic for use in producing crude iron or steel

Info

Publication number
NL7412035A
NL7412035A NL7412035A NL7412035A NL7412035A NL 7412035 A NL7412035 A NL 7412035A NL 7412035 A NL7412035 A NL 7412035A NL 7412035 A NL7412035 A NL 7412035A NL 7412035 A NL7412035 A NL 7412035A
Authority
NL
Netherlands
Prior art keywords
metal
vessel
oxide
channel
molten metal
Prior art date
Application number
NL7412035A
Other languages
Dutch (nl)
Original Assignee
Uddeholms 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 SE7316039A external-priority patent/SE397100B/en
Priority claimed from SE7404474A external-priority patent/SE401522B/en
Priority claimed from SE7404473A external-priority patent/SE397202B/en
Application filed by Uddeholms Ab filed Critical Uddeholms Ab
Publication of NL7412035A publication Critical patent/NL7412035A/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
    • C21B13/0006—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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/34—Blowing through the bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

A metal oxide is reduced to the metal by addn. to a molten metal in a container provided with >=1 projecting part having a channel communicating with the converter vessel and provided with >=1 zone heated by electrical induction to establish a temp. gradient between the content of the heating zone and those of the vessel. The oxide is injected as powder suspended in a carrier gas into the molten metal in the vessel, through a nozzle traversing the refractory lining of the vessel and terminating in this at a specific distance from the openings of the channel, in such a way that (i) the solid particles of metal oxide in the suspension will bring about rapid transport of hotter metal present outside the openings of the channel without penetrating the heating zone and (ii) at the same time the oxide particles will be carried to all parts of the molten metal in the converter vessel, where the desired redn. processes can then take place at an appropriate temp.
NL7412035A 1973-11-28 1974-09-10 Direct reduction of oxides to metal - partic for use in producing crude iron or steel NL7412035A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE7316039A SE397100B (en) 1973-11-28 1973-11-28 METAL OXIDITY REDUCTION KIT ACCORDING TO 7306894-2
SE7404474A SE401522B (en) 1974-04-03 1974-04-03 PROCEEDING THE IMPLEMENTATION OF A METALLURGIC PROCESS UNDER PATENT 7316039-2
SE7404473A SE397202B (en) 1974-04-03 1974-04-03 METAL OXIDITY REDUCTION KIT ACCORDING TO 7306894-2

Publications (1)

Publication Number Publication Date
NL7412035A true NL7412035A (en) 1975-05-30

Family

ID=27355058

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7412035A NL7412035A (en) 1973-11-28 1974-09-10 Direct reduction of oxides to metal - partic for use in producing crude iron or steel

Country Status (3)

Country Link
BR (1) BR7407518D0 (en)
NL (1) NL7412035A (en)
PL (1) PL91717B1 (en)

Also Published As

Publication number Publication date
PL91717B1 (en) 1977-03-31
BR7407518D0 (en) 1975-08-26

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Legal Events

Date Code Title Description
BV The patent application has lapsed