GB1375072A - - Google Patents

Info

Publication number
GB1375072A
GB1375072A GB221972A GB221972A GB1375072A GB 1375072 A GB1375072 A GB 1375072A GB 221972 A GB221972 A GB 221972A GB 221972 A GB221972 A GB 221972A GB 1375072 A GB1375072 A GB 1375072A
Authority
GB
United Kingdom
Prior art keywords
oxygen
melt
gas
carbon
decarburizing
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
GB221972A
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 filed Critical
Priority to GB221972A priority Critical patent/GB1375072A/en
Publication of GB1375072A publication Critical patent/GB1375072A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising

Landscapes

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

Abstract

1375072 Steel decarburization ALLEGHENY LUDLUM INDUSTRIES Inc. 17 Jan 1972 2219/72 Heading C7D A molten steel charge is decarburized by blowing an oxygen containing gas, beneath the melt surface, the oxygen partial pressure in the gas being governed by the equation: where Ox = the equivalent oxygen content required to yield a processed melt having a CB carbon content, C eg is the equilibrium carbon concentration, T is the temperature of the melt, H the bubble rise height, P the pressure inside the bubbles, D the bubble diameter from the determination of the initial and desired final carbon content of the melt and time of blow, and the amount of oxygen necessary to react with the carbon to bring it down to the desired level, the rate of flow of gas having a calculable oxygen equivalent partial pressure is obtainable. Steam or carbon dioxide may be used as decarburizing gas in place of oxygen. The invention can also be applied in decarburizing alloy steels containing e.g. chromium or manganese.
GB221972A 1972-01-17 1972-01-17 Expired GB1375072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB221972A GB1375072A (en) 1972-01-17 1972-01-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB221972A GB1375072A (en) 1972-01-17 1972-01-17

Publications (1)

Publication Number Publication Date
GB1375072A true GB1375072A (en) 1974-11-27

Family

ID=9735692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB221972A Expired GB1375072A (en) 1972-01-17 1972-01-17

Country Status (1)

Country Link
GB (1) GB1375072A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992012266A1 (en) * 1991-01-10 1992-07-23 Usx Engineers And Consultants, Inc. A method of promoting the decarburization reaction in a vacuum refining furnace
GB2281312A (en) * 1993-08-20 1995-03-01 Leybold Durferrit Gmbh Process for decarburizing carbon-containing molten metal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992012266A1 (en) * 1991-01-10 1992-07-23 Usx Engineers And Consultants, Inc. A method of promoting the decarburization reaction in a vacuum refining furnace
GB2281312A (en) * 1993-08-20 1995-03-01 Leybold Durferrit Gmbh Process for decarburizing carbon-containing molten metal
GB2281312B (en) * 1993-08-20 1997-04-23 Leybold Durferrit Gmbh Process for decarburizing carbon-containing molten metal

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed