FR2428672A1 - Dephosphorisation of steel bath under reducing conditions - using alkaline earth metal addition - Google Patents

Dephosphorisation of steel bath under reducing conditions - using alkaline earth metal addition

Info

Publication number
FR2428672A1
FR2428672A1 FR7817870A FR7817870A FR2428672A1 FR 2428672 A1 FR2428672 A1 FR 2428672A1 FR 7817870 A FR7817870 A FR 7817870A FR 7817870 A FR7817870 A FR 7817870A FR 2428672 A1 FR2428672 A1 FR 2428672A1
Authority
FR
France
Prior art keywords
alkaline earth
earth metal
dephosphorisation
reducing conditions
under reducing
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.)
Granted
Application number
FR7817870A
Other languages
French (fr)
Other versions
FR2428672B3 (en
Inventor
Christian Gatellier
Paul-Victor Riboud
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to FR7817870A priority Critical patent/FR2428672A1/en
Publication of FR2428672A1 publication Critical patent/FR2428672A1/en
Application granted granted Critical
Publication of FR2428672B3 publication Critical patent/FR2428672B3/fr
Granted 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

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

An alkaline earth metal (alloy) powder or a powder mixt. of an alkaline earth metal with one of its halides is introduced into the bath. A medium is formed contact with the bath surface which does not react with the alkaline earth metal phosphides formed in the bath. Phosphorus is removed from the steel bath without loss of alloying elements or other additives. The process can be carried out after a desulphurisation process, without intermediate deslagging, if the desulphurisation stage is prolonged to reduce the activity of oxides in the slag.
FR7817870A 1978-06-14 1978-06-14 Dephosphorisation of steel bath under reducing conditions - using alkaline earth metal addition Granted FR2428672A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817870A FR2428672A1 (en) 1978-06-14 1978-06-14 Dephosphorisation of steel bath under reducing conditions - using alkaline earth metal addition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817870A FR2428672A1 (en) 1978-06-14 1978-06-14 Dephosphorisation of steel bath under reducing conditions - using alkaline earth metal addition

Publications (2)

Publication Number Publication Date
FR2428672A1 true FR2428672A1 (en) 1980-01-11
FR2428672B3 FR2428672B3 (en) 1981-02-06

Family

ID=9209538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817870A Granted FR2428672A1 (en) 1978-06-14 1978-06-14 Dephosphorisation of steel bath under reducing conditions - using alkaline earth metal addition

Country Status (1)

Country Link
FR (1) FR2428672A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067093A1 (en) * 1981-05-22 1982-12-15 Institut De Recherches De La Siderurgie Francaise (Irsid) Process for treating phosphided slags
EP0363749A1 (en) * 1988-10-07 1990-04-18 Leybold Aktiengesellschaft Process for dephosphorizing molten metals by treating with alkali metals and alkaline earth metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067093A1 (en) * 1981-05-22 1982-12-15 Institut De Recherches De La Siderurgie Francaise (Irsid) Process for treating phosphided slags
EP0363749A1 (en) * 1988-10-07 1990-04-18 Leybold Aktiengesellschaft Process for dephosphorizing molten metals by treating with alkali metals and alkaline earth metals

Also Published As

Publication number Publication date
FR2428672B3 (en) 1981-02-06

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