DE68905741T2 - Verfahren zum reinigen von metall. - Google Patents

Verfahren zum reinigen von metall.

Info

Publication number: DE68905741T2
Authority: DE; Germany
Prior art keywords: pressure; molten metal; gas; vessel; torr
Prior art date: 1988-10-06
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)

English (en)

Other versions

DE68905741D1 (de

Inventor

Toshio C O Patent Licens Ishii

Yoshiteru C O Patent L Kikuchi

Hidetoshi C O Patent L Matsuno

Shunichi C O Patent L 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

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.)

1988-10-06

Filing date

1989-10-05

Publication date

1993-09-23

1988-10-06 Priority claimed from JP25080688A external-priority patent/JP2718096B2/ja

1988-10-06 Priority claimed from JP63250807A external-priority patent/JPH0742524B2/ja

1989-02-13 Priority claimed from JP1031105A external-priority patent/JPH02211974A/ja

1989-10-05 Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd

1993-05-06 Publication of DE68905741D1 publication Critical patent/DE68905741D1/de

1993-09-23 Application granted granted Critical

1993-09-23 Publication of DE68905741T2 publication Critical patent/DE68905741T2/de

2009-10-06 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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)

DE8989118517T 1988-10-06 1989-10-05 Verfahren zum reinigen von metall. Expired - Fee Related DE68905741T2 (de)

Applications Claiming Priority (3)

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

Publications (2)

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

Family

ID=27287204

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8989118517T Expired - Fee Related DE68905741T2 (de)	1988-10-06	1989-10-05	Verfahren zum reinigen von metall.

Country Status (6)

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

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 (pt) *	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

1989
- 1989-09-29 CA CA000614559A patent/CA1339703C/en not_active Expired - Fee Related
- 1989-10-02 AU AU42457/89A patent/AU4245789A/en not_active Abandoned
- 1989-10-05 BR BR898905068A patent/BR8905068A/pt not_active IP Right Cessation
- 1989-10-05 DE DE8989118517T patent/DE68905741T2/de not_active Expired - Fee Related
- 1989-10-05 EP EP89118517A patent/EP0362851B1/en not_active Expired - Lifetime
- 1989-10-06 KR KR1019890014420A patent/KR920006578B1/ko not_active Expired
1992
- 1992-04-02 AU AU13976/92A patent/AU655245B2/en not_active Ceased

Also Published As

Publication number	Publication date
CA1339703C (en)	1998-03-10
EP0362851A3 (en)	1990-06-20
EP0362851B1 (en)	1993-03-31
AU655245B2 (en)	1994-12-08
AU1397692A (en)	1992-05-28
EP0362851A2 (en)	1990-04-11
DE68905741D1 (de)	1993-05-06
AU4245789A (en)	1990-08-16
KR920006578B1 (ko)	1992-08-10
BR8905068A (pt)	1990-05-08
KR900006541A (ko)	1990-05-08

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Legal Events

Date	Code	Title	Description
1994-04-28	8364	No opposition during term of opposition
2005-08-18	8339	Ceased/non-payment of the annual fee