GB861238A - Process for making steel - Google Patents

Process for making steel

Info

Publication number
GB861238A
GB861238A GB38956/58A GB3895658A GB861238A GB 861238 A GB861238 A GB 861238A GB 38956/58 A GB38956/58 A GB 38956/58A GB 3895658 A GB3895658 A GB 3895658A GB 861238 A GB861238 A GB 861238A
Authority
GB
United Kingdom
Prior art keywords
stage
lime
oxygen
carbon content
powder
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
GB38956/58A
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 GB861238A publication Critical patent/GB861238A/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 made in a converter by a first stage of blowing through the bottom tuyeres to a carbon content of 0.7 to 1.5% and top blowing in a second stage with lime loaded oxygen with the converter turned down. Lime may be added during the first stage in the form of lumps, powder or briquettes, or it may be supplied as a powder suspended in the bottom blown gas which may be air enriched to 30% oxygen. With low silicon irons, the slags from the previous operation may be suitable for the first stage without further addition of lime. During the second stage, ores, oxides of iron, or siliceous materials may be added in bulk or in the form of powder blown in with the gas, and in the latter part of the second stage the oxygen may be free from suspended additions. At the end of the second stage the refining may be terminated leaving the steel with low phosphorous and relatively high carbon content, or the carbon content may be reduced in a third stage in which bottom blowing is resumed.
GB38956/58A 1958-02-03 1958-12-03 Process for making steel Expired GB861238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU861238X 1958-02-03

Publications (1)

Publication Number Publication Date
GB861238A true GB861238A (en) 1961-02-15

Family

ID=19734395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38956/58A Expired GB861238A (en) 1958-02-03 1958-12-03 Process for making steel

Country Status (1)

Country Link
GB (1) GB861238A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773496A (en) * 1970-02-18 1973-11-20 Maximilianshuette Eisenwerk Process for producing chrome steels and a converter for carrying out the process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773496A (en) * 1970-02-18 1973-11-20 Maximilianshuette Eisenwerk Process for producing chrome steels and a converter for carrying out the process

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