FR2407985A1 - Procede de desulfuration du fer et de l'acier fondus - Google Patents

Procede de desulfuration du fer et de l'acier fondus

Info

Publication number
FR2407985A1
FR2407985A1 FR7733240A FR7733240A FR2407985A1 FR 2407985 A1 FR2407985 A1 FR 2407985A1 FR 7733240 A FR7733240 A FR 7733240A FR 7733240 A FR7733240 A FR 7733240A FR 2407985 A1 FR2407985 A1 FR 2407985A1
Authority
FR
France
Prior art keywords
rare earth
steel
desulphurisation
earth oxide
molten iron
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.)
Withdrawn
Application number
FR7733240A
Other languages
English (en)
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.)
Molycorp Inc
Original Assignee
Molycorp Inc
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 Molycorp Inc filed Critical Molycorp Inc
Priority to FR7733240A priority Critical patent/FR2407985A1/fr
Publication of FR2407985A1 publication Critical patent/FR2407985A1/fr
Withdrawn legal-status Critical Current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
    • C21C7/064—Dephosphorising; Desulfurising
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising

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

L'INVENTION CONCERNE LA DESULFURATION DE L'ACIER FONDU. ELLE SE RAPPORTE A UN PROCEDE DANS LEQUEL UN OXYDE D'UN ELEMENT DES TERRES RARES REAGIT AVEC LE SOUFRE A RETIRER EN PRESENCE D'UN AGENT DESOXYDANT, ET FORME DES OXYSULFURES ET DES SULFURES DES ELEMENTS DES TERRES RARES. CES SULFURES ET OXYSULFURES SONT ALORS RETIRES. APPLICATION A LA DESULFURATION EXTERNE DU FER ET DE L'ACIER FONDU.
FR7733240A 1977-11-04 1977-11-04 Procede de desulfuration du fer et de l'acier fondus Withdrawn FR2407985A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7733240A FR2407985A1 (fr) 1977-11-04 1977-11-04 Procede de desulfuration du fer et de l'acier fondus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7733240A FR2407985A1 (fr) 1977-11-04 1977-11-04 Procede de desulfuration du fer et de l'acier fondus

Publications (1)

Publication Number Publication Date
FR2407985A1 true FR2407985A1 (fr) 1979-06-01

Family

ID=9197276

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733240A Withdrawn FR2407985A1 (fr) 1977-11-04 1977-11-04 Procede de desulfuration du fer et de l'acier fondus

Country Status (1)

Country Link
FR (1) FR2407985A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB715750A (en) * 1951-04-12 1954-09-22 British Thomson Houston Co Ltd Improvements in and relating to measuring instruments
FR1108850A (fr) * 1953-07-16 1956-01-18 Molybdenum Corp Production de fers et d'aciers et leurs compositions
FR2051745A1 (fr) * 1969-07-15 1971-04-09 Asea Ab
US3960616A (en) * 1975-06-19 1976-06-01 Armco Steel Corporation Rare earth metal treated cold rolled, non-oriented silicon steel and method of making it
GB1453717A (en) * 1973-08-17 1976-10-27 British Steel Corp Manufacture of steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB715750A (en) * 1951-04-12 1954-09-22 British Thomson Houston Co Ltd Improvements in and relating to measuring instruments
FR1108850A (fr) * 1953-07-16 1956-01-18 Molybdenum Corp Production de fers et d'aciers et leurs compositions
FR2051745A1 (fr) * 1969-07-15 1971-04-09 Asea Ab
GB1453717A (en) * 1973-08-17 1976-10-27 British Steel Corp Manufacture of steel
US3960616A (en) * 1975-06-19 1976-06-01 Armco Steel Corporation Rare earth metal treated cold rolled, non-oriented silicon steel and method of making it

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Legal Events

Date Code Title Description
ST Notification of lapse