CA1339703C - Method for cleaning molten metal - Google Patents

Method for cleaning molten metal

Info

Publication number
CA1339703C
CA1339703C CA000614559A CA614559A CA1339703C CA 1339703 C CA1339703 C CA 1339703C CA 000614559 A CA000614559 A CA 000614559A CA 614559 A CA614559 A CA 614559A CA 1339703 C CA1339703 C CA 1339703C
Authority
CA
Canada
Prior art keywords
molten metal
gas
pressure
vessel
torr
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 - Fee Related
Application number
CA000614559A
Other languages
English (en)
French (fr)
Inventor
Yoshiteru Kikuchi
Hidetoshi Matsuno
Toshio Ishii
Shunichi Sugiyama
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.)
JFE Engineering Corp
Original Assignee
NKK 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
Priority claimed from JP63250807A external-priority patent/JPH0742524B2/ja
Priority claimed from JP25080688A external-priority patent/JP2718096B2/ja
Priority claimed from JP1031105A external-priority patent/JPH02211974A/ja
Application filed by NKK Corp filed Critical NKK Corp
Application granted granted Critical
Publication of CA1339703C publication Critical patent/CA1339703C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C22B1/04—Blast roasting
    • 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
    • C21C7/10—Handling in a vacuum
    • 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
    • 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
    • C21C7/0081—Treating and handling under pressure
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Manufacture And Refinement Of Metals (AREA)
CA000614559A 1988-10-06 1989-09-29 Method for cleaning molten metal Expired - Fee Related CA1339703C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP250806/88 1988-10-06
JP63250807A JPH0742524B2 (ja) 1988-10-06 1988-10-06 溶融金属の清浄化方法
JP25080688A JP2718096B2 (ja) 1988-10-06 1988-10-06 溶融金属の減圧清浄化方法
JP250807/88 1988-10-06
JP031105/89 1989-02-13
JP1031105A JPH02211974A (ja) 1988-01-21 1989-02-13 溶融金属の減圧清浄化方法

Publications (1)

Publication Number Publication Date
CA1339703C true CA1339703C (en) 1998-03-10

Family

ID=27287204

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000614559A Expired - Fee Related CA1339703C (en) 1988-10-06 1989-09-29 Method for cleaning molten metal

Country Status (6)

Country Link
EP (1) EP0362851B1 (ko)
KR (1) KR920006578B1 (ko)
AU (2) AU4245789A (ko)
BR (1) BR8905068A (ko)
CA (1) CA1339703C (ko)
DE (1) DE68905741T2 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004495A (en) * 1990-02-05 1991-04-02 Labate M D Method for producing ultra clean steel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1582780A (ko) * 1968-01-10 1969-10-10
US3635696A (en) * 1968-05-21 1972-01-18 Finkl & Sons Co Treatment of molten metal using arc heat and vacuum
DE2710577A1 (de) * 1977-03-11 1978-09-14 Thyssen Edelstahlwerke Ag Verfahren zum frischen von stahl
DE3426736A1 (de) * 1984-07-20 1986-01-30 Klöckner CRA Technologie GmbH, 4100 Duisburg Verfahren zur spuelgasbehandlung von metallschmelzen
GB2162604B (en) * 1984-07-30 1988-05-25 Teves Gmbh Alfred Braking pressure generator for a hydraulic brake system
US4780134A (en) * 1986-09-23 1988-10-25 A. Finkl & Sons Co. Simplified method and apparatus for treating molten steel

Also Published As

Publication number Publication date
AU655245B2 (en) 1994-12-08
DE68905741T2 (de) 1993-09-23
BR8905068A (pt) 1990-05-08
AU1397692A (en) 1992-05-28
KR920006578B1 (ko) 1992-08-10
DE68905741D1 (de) 1993-05-06
EP0362851A3 (en) 1990-06-20
EP0362851B1 (en) 1993-03-31
KR900006541A (ko) 1990-05-08
AU4245789A (en) 1990-08-16
EP0362851A2 (en) 1990-04-11

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Legal Events

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