FR2374422A1 - Continuous refining of ferrous metal - by dephosphorisation and desulphurisation using flux contg. alkali metal carbonate - Google Patents

Continuous refining of ferrous metal - by dephosphorisation and desulphurisation using flux contg. alkali metal carbonate

Info

Publication number
FR2374422A1
FR2374422A1 FR7637660A FR7637660A FR2374422A1 FR 2374422 A1 FR2374422 A1 FR 2374422A1 FR 7637660 A FR7637660 A FR 7637660A FR 7637660 A FR7637660 A FR 7637660A FR 2374422 A1 FR2374422 A1 FR 2374422A1
Authority
FR
France
Prior art keywords
alkali metal
contg
metal carbonate
dephosphorisation
refining
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
FR7637660A
Other languages
French (fr)
Other versions
FR2374422B1 (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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to FR7637660A priority Critical patent/FR2374422A1/en
Publication of FR2374422A1 publication Critical patent/FR2374422A1/en
Application granted granted Critical
Publication of FR2374422B1 publication Critical patent/FR2374422B1/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
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Molten ferrous metal is continuously refined, using a single dephosphorisation and desulphurising step, by continuously introducing the metal into a refining vessel, closed to the atmos. together with a flux contg. >=50% alkali metal carbonate-contg. salt to refine the metal under oxidising conditions. The by-prod., generated during refining, is discharged and alkali metal carbonate-contg. salt is recovered from it for recycling. Used esp. in the refining of pig iron or ferroalloys such as ferromanganese; e.g. the treatment can be applied to pig iron before feeding it to a LD converter. The process provides a closed circuit for the alkali metal carbonate to reduce costs and pollution problems.
FR7637660A 1976-12-14 1976-12-14 Continuous refining of ferrous metal - by dephosphorisation and desulphurisation using flux contg. alkali metal carbonate Granted FR2374422A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7637660A FR2374422A1 (en) 1976-12-14 1976-12-14 Continuous refining of ferrous metal - by dephosphorisation and desulphurisation using flux contg. alkali metal carbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7637660A FR2374422A1 (en) 1976-12-14 1976-12-14 Continuous refining of ferrous metal - by dephosphorisation and desulphurisation using flux contg. alkali metal carbonate

Publications (2)

Publication Number Publication Date
FR2374422A1 true FR2374422A1 (en) 1978-07-13
FR2374422B1 FR2374422B1 (en) 1979-09-14

Family

ID=9181051

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7637660A Granted FR2374422A1 (en) 1976-12-14 1976-12-14 Continuous refining of ferrous metal - by dephosphorisation and desulphurisation using flux contg. alkali metal carbonate

Country Status (1)

Country Link
FR (1) FR2374422A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782192A (en) * 1954-12-02 1957-09-04 British Oxygen Co Ltd Improvements in or relating to the manufacture of steel
FR1489570A (en) * 1966-08-16 1967-07-21 Forderung Der Eisenhuettentech Process of dephosphorization and desulphurization of iron and more especially of cast iron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782192A (en) * 1954-12-02 1957-09-04 British Oxygen Co Ltd Improvements in or relating to the manufacture of steel
FR1489570A (en) * 1966-08-16 1967-07-21 Forderung Der Eisenhuettentech Process of dephosphorization and desulphurization of iron and more especially of cast iron

Also Published As

Publication number Publication date
FR2374422B1 (en) 1979-09-14

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Legal Events

Date Code Title Description
ST Notification of lapse