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GB874379A - Improvements relating to the manufacture of steel - Google Patents

Improvements relating to the manufacture of steel

Info

Publication number
GB874379A
GB874379A GB14089/59A GB1408959A GB874379A GB 874379 A GB874379 A GB 874379A GB 14089/59 A GB14089/59 A GB 14089/59A GB 1408959 A GB1408959 A GB 1408959A GB 874379 A GB874379 A GB 874379A
Authority
GB
United Kingdom
Prior art keywords
oxygen
blowing
gas
steel
melt
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.)
Expired
Application number
GB14089/59A
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Publication of GB874379A publication Critical patent/GB874379A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/30Regulating or controlling the blowing
    • C21C5/32Blowing from above

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)

Abstract

Steel is refined by surface blowing oxygen from a lance, the melt being stirred when oxygen blowing is stopped for intermediate or final deslagging by blowing a gas containing less than 35% oxygen into the melt. The oxygen may be loaded with dephosphorizing agents, as may the gas, which can be nitrogen, argon, carbon monoxide, air or air enriched with oxygen with or without steam and/or carbon dioxide. Blowing the gas may take 1-4 minutes, the lance used for blowing oxygen being suitable therefor. The process is applicable to rotary furnaces and to conventional bottom blown converters. The feed of dephosphorizing material in the oxygen may be increased during the 2-3 minutes immediately before the cessation of oxygen blowing.
GB14089/59A 1958-04-28 1959-04-24 Improvements relating to the manufacture of steel Expired GB874379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU874379X 1958-04-28

Publications (1)

Publication Number Publication Date
GB874379A true GB874379A (en) 1961-08-02

Family

ID=19734556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14089/59A Expired GB874379A (en) 1958-04-28 1959-04-24 Improvements relating to the manufacture of steel

Country Status (1)

Country Link
GB (1) GB874379A (en)

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