EP0322763A3 - Method for cleaning molten metal and apparatus therefor - Google Patents

Method for cleaning molten metal and apparatus therefor Download PDF

Info

Publication number
EP0322763A3
EP0322763A3 EP88121503A EP88121503A EP0322763A3 EP 0322763 A3 EP0322763 A3 EP 0322763A3 EP 88121503 A EP88121503 A EP 88121503A EP 88121503 A EP88121503 A EP 88121503A EP 0322763 A3 EP0322763 A3 EP 0322763A3
Authority
EP
European Patent Office
Prior art keywords
molten metal
apparatus therefor
cleaning molten
cleaning
therefor
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
EP88121503A
Other versions
EP0322763B1 (en
EP0322763A2 (en
Inventor
Toshio C/O Patent & License And Ishii
Yutaka C/O Patent & License And Okubo
Shuzo C/O Patent & License And Fukuda
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 JP62326722A external-priority patent/JPH01170555A/en
Priority claimed from JP62326723A external-priority patent/JPH01170556A/en
Priority claimed from JP311288A external-priority patent/JP2629225B2/en
Application filed by NKK Corp filed Critical NKK Corp
Publication of EP0322763A2 publication Critical patent/EP0322763A2/en
Publication of EP0322763A3 publication Critical patent/EP0322763A3/en
Application granted granted Critical
Publication of EP0322763B1 publication Critical patent/EP0322763B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • C21C7/072—Treatment with gases
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP88121503A 1987-12-25 1988-12-22 Method for cleaning molten metal and apparatus therefor Expired - Lifetime EP0322763B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP62326722A JPH01170555A (en) 1987-12-25 1987-12-25 Cleaning method for molten metal
JP326723/87 1987-12-25
JP62326723A JPH01170556A (en) 1987-12-25 1987-12-25 Cleaning method for molten metal
JP326722/87 1987-12-25
JP311288A JP2629225B2 (en) 1988-01-12 1988-01-12 Method for cleaning molten metal
JP3113/88 1988-01-12
JP3112/88 1988-01-12
JP311388 1988-01-12

Publications (3)

Publication Number Publication Date
EP0322763A2 EP0322763A2 (en) 1989-07-05
EP0322763A3 true EP0322763A3 (en) 1990-02-07
EP0322763B1 EP0322763B1 (en) 1993-08-11

Family

ID=27453785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121503A Expired - Lifetime EP0322763B1 (en) 1987-12-25 1988-12-22 Method for cleaning molten metal and apparatus therefor

Country Status (6)

Country Link
EP (1) EP0322763B1 (en)
KR (1) KR930005065B1 (en)
AU (1) AU605949B2 (en)
BR (1) BR8806870A (en)
CA (1) CA1337744C (en)
DE (1) DE3883190T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01188619A (en) * 1988-01-21 1989-07-27 Nkk Corp Method for rh vacuum degasification
CN104404205B (en) * 2014-10-27 2017-02-08 北京科技大学 Method for removing microscopic nonmetallic inclusion in molten steel by using nitrogen-increasing nitrogen-precipitating process

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168461B (en) * 1959-07-10 1964-04-23 Fischer Ag Georg Process for treating molten metal, in particular molten steel
CH420237A (en) * 1961-10-13 1966-09-15 Stich Wilhelm Dipl Ing Dr Tech Process for the production of steel
GB1048895A (en) * 1963-03-14 1966-11-23 Siderurgie Fse Inst Rech Apparatus and method for the degassing of molten metals
DE1903212A1 (en) * 1968-01-31 1969-11-20 Asea Ab Arrangement for stirring molten metal
LU61062A1 (en) * 1969-06-25 1970-08-04
DE1433406B2 (en) * 1963-11-11 1970-09-17 Allmänna Svenska Elektriska Aktiebolaget, Västeras (Schweden) Arrangement for degassing steel or metal melts
DE1583287A1 (en) * 1967-11-30 1972-03-16 Salzgitter Ag Device for carrying out reactions between liquids and gases
FR2438091A1 (en) * 1978-10-04 1980-04-30 Vasipari Kutato Intezet METHOD AND APPARATUS FOR REDUCING THE INCLUSION CONTENT OF STEELS AND FOR REFINING THEIR STRUCTURE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491954A1 (en) * 1980-10-14 1982-04-16 Pechiney Aluminium DEVICE FOR TREATING A LIQUID METAL BATH BY INJECTING GAS

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168461B (en) * 1959-07-10 1964-04-23 Fischer Ag Georg Process for treating molten metal, in particular molten steel
CH420237A (en) * 1961-10-13 1966-09-15 Stich Wilhelm Dipl Ing Dr Tech Process for the production of steel
GB1048895A (en) * 1963-03-14 1966-11-23 Siderurgie Fse Inst Rech Apparatus and method for the degassing of molten metals
DE1433406B2 (en) * 1963-11-11 1970-09-17 Allmänna Svenska Elektriska Aktiebolaget, Västeras (Schweden) Arrangement for degassing steel or metal melts
DE1583287A1 (en) * 1967-11-30 1972-03-16 Salzgitter Ag Device for carrying out reactions between liquids and gases
DE1903212A1 (en) * 1968-01-31 1969-11-20 Asea Ab Arrangement for stirring molten metal
LU61062A1 (en) * 1969-06-25 1970-08-04
FR2438091A1 (en) * 1978-10-04 1980-04-30 Vasipari Kutato Intezet METHOD AND APPARATUS FOR REDUCING THE INCLUSION CONTENT OF STEELS AND FOR REFINING THEIR STRUCTURE

Also Published As

Publication number Publication date
CA1337744C (en) 1995-12-19
AU2703888A (en) 1989-08-17
DE3883190D1 (en) 1993-09-16
AU605949B2 (en) 1991-01-24
DE3883190T2 (en) 1994-01-05
KR930005065B1 (en) 1993-06-15
KR890010223A (en) 1989-08-07
EP0322763B1 (en) 1993-08-11
BR8806870A (en) 1989-08-29
EP0322763A2 (en) 1989-07-05

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