GB742455A - Process for dephosphorising steel and pig iron - Google Patents

Process for dephosphorising steel and pig iron

Info

Publication number
GB742455A
GB742455A GB35762/53A GB3576253A GB742455A GB 742455 A GB742455 A GB 742455A GB 35762/53 A GB35762/53 A GB 35762/53A GB 3576253 A GB3576253 A GB 3576253A GB 742455 A GB742455 A GB 742455A
Authority
GB
United Kingdom
Prior art keywords
steel
alumina
weight
per cent
pig 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.)
Expired
Application number
GB35762/53A
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.)
Commentry Fourchambault & Deca
Original Assignee
Commentry Fourchambault & Deca
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 Commentry Fourchambault & Deca filed Critical Commentry Fourchambault & Deca
Publication of GB742455A publication Critical patent/GB742455A/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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or 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
    • 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)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

In a process for the dephosphorization of pig iron or steel, a bath of the metal is agitated, in an oxidising medium e.g. industrial oxygen which is blown in thus also producing the agitation, with lime which contains not more than 2 per cent by weight of silicon and not more than 1,5 per cent by weight of ferric oxide, manganese dioxide, magnesium oxide or alumina. The additive is granulated, pure and refractory so that its complete fusion is retarded and the formed slag is removed from the melt before its complete fusion. When an additive other than alumina is used, alumina is added thereto so that it is present in an amount of 1-20 per cent by weight in the formed slag.
GB35762/53A 1952-12-24 1953-12-23 Process for dephosphorising steel and pig iron Expired GB742455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR742455X 1952-12-24

Publications (1)

Publication Number Publication Date
GB742455A true GB742455A (en) 1955-12-30

Family

ID=9141287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35762/53A Expired GB742455A (en) 1952-12-24 1953-12-23 Process for dephosphorising steel and pig iron

Country Status (1)

Country Link
GB (1) GB742455A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284434B (en) * 1961-08-03 1968-12-05 Lorraine Laminage Process for refining pig iron to steel in a rotary kiln with an axis inclined to the horizontal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284434B (en) * 1961-08-03 1968-12-05 Lorraine Laminage Process for refining pig iron to steel in a rotary kiln with an axis inclined to the horizontal

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