DE68905741D1 - METHOD FOR CLEANING METAL. - Google Patents

METHOD FOR CLEANING METAL.

Info

Publication number
DE68905741D1
DE68905741D1 DE8989118517T DE68905741T DE68905741D1 DE 68905741 D1 DE68905741 D1 DE 68905741D1 DE 8989118517 T DE8989118517 T DE 8989118517T DE 68905741 T DE68905741 T DE 68905741T DE 68905741 D1 DE68905741 D1 DE 68905741D1
Authority
DE
Germany
Prior art keywords
cleaning metal
cleaning
metal
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
DE8989118517T
Other languages
German (de)
Other versions
DE68905741T2 (en
Inventor
Toshio C O Patent Licens Ishii
Shunichi C O Patent L Sugiyama
Yoshiteru C O Patent L Kikuchi
Hidetoshi C O Patent L Matsuno
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
Nippon Kokan Ltd
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/en
Priority claimed from JP25080688A external-priority patent/JP2718096B2/en
Priority claimed from JP1031105A external-priority patent/JPH02211974A/en
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Application granted granted Critical
Publication of DE68905741D1 publication Critical patent/DE68905741D1/en
Publication of DE68905741T2 publication Critical patent/DE68905741T2/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)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (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)
DE8989118517T 1988-10-06 1989-10-05 METHOD FOR CLEANING METAL. Expired - Fee Related DE68905741T2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63250807A JPH0742524B2 (en) 1988-10-06 1988-10-06 Method for cleaning molten metal
JP25080688A JP2718096B2 (en) 1988-10-06 1988-10-06 Vacuum cleaning method for molten metal
JP1031105A JPH02211974A (en) 1988-01-21 1989-02-13 Method for purifying molten metal by reduction of pressure

Publications (2)

Publication Number Publication Date
DE68905741D1 true DE68905741D1 (en) 1993-05-06
DE68905741T2 DE68905741T2 (en) 1993-09-23

Family

ID=27287204

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989118517T Expired - Fee Related DE68905741T2 (en) 1988-10-06 1989-10-05 METHOD FOR CLEANING METAL.

Country Status (6)

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

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 (en) * 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 (en) * 1977-03-11 1978-09-14 Thyssen Edelstahlwerke Ag METHOD OF REFRESHING STEEL
DE3426736A1 (en) * 1984-07-20 1986-01-30 Klöckner CRA Technologie GmbH, 4100 Duisburg METHOD FOR THE PURGE GAS TREATMENT OF METAL MELT
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
KR900006541A (en) 1990-05-08
EP0362851A3 (en) 1990-06-20
AU4245789A (en) 1990-08-16
AU1397692A (en) 1992-05-28
KR920006578B1 (en) 1992-08-10
EP0362851A2 (en) 1990-04-11
AU655245B2 (en) 1994-12-08
DE68905741T2 (en) 1993-09-23
EP0362851B1 (en) 1993-03-31
CA1339703C (en) 1998-03-10
BR8905068A (en) 1990-05-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee