EP0032350A3 - Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor - Google Patents

Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor Download PDF

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Publication number
EP0032350A3
EP0032350A3 EP80401900A EP80401900A EP0032350A3 EP 0032350 A3 EP0032350 A3 EP 0032350A3 EP 80401900 A EP80401900 A EP 80401900A EP 80401900 A EP80401900 A EP 80401900A EP 0032350 A3 EP0032350 A3 EP 0032350A3
Authority
EP
European Patent Office
Prior art keywords
crucible
refining
molten metal
injectors
metal bath
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
EP80401900A
Other languages
French (fr)
Other versions
EP0032350A2 (en
EP0032350B1 (en
Inventor
Jean-Claude Grosjean
Guy Denier
Claude Bauler
Paul Metz
Francois Schleimer
Lucien Lorang
Ferdinand Goedert
Romain Henrion
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Arcelor Luxembourg SA
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
Arbed SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19729324&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0032350(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Institut de Recherches de la Siderurgie Francaise IRSID, Arbed SA filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to AT80401900T priority Critical patent/ATE14144T1/en
Publication of EP0032350A2 publication Critical patent/EP0032350A2/en
Publication of EP0032350A3 publication Critical patent/EP0032350A3/en
Application granted granted Critical
Publication of EP0032350B1 publication Critical patent/EP0032350B1/en
Expired legal-status Critical Current

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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
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/35—Blowing from above and through the bath

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

Process of refining of a metal bath in a crucible with oxygen blast at the top and crucible used. The invention consists essentially of providing in the bottom (15) of the crucible agitating gas injectors (15) located at least in a peripheral circular ring situated in immediate proximity to the refractory side wall. The injectors are preferably concentrated opposite the journals. Secondary injectors are, also preferably, provided in the bottom zone, intermediate between the ring and the center of the crucible. The invention makes it possible, in relation to the prior injection practice, to reduce the rate of dissolution of the agitating gas in the molten metal and then makes it possible to use a low-cost agitating gas, such as nitrogen, without risk of excessive nitridation of the bath.
EP80401900A 1980-01-09 1980-12-31 Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor Expired EP0032350B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401900T ATE14144T1 (en) 1980-01-09 1980-12-31 METHOD OF REFRIGERATION OF A METAL METAL IN A CRUCIBLE UNDER BLOWING OXYGEN AND CRUCIBLE USED THEREFORE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82069A LU82069A1 (en) 1980-01-09 1980-01-09 METHOD FOR REFINING A METAL BATH
LU82069 1980-01-09

Publications (3)

Publication Number Publication Date
EP0032350A2 EP0032350A2 (en) 1981-07-22
EP0032350A3 true EP0032350A3 (en) 1981-08-26
EP0032350B1 EP0032350B1 (en) 1985-07-03

Family

ID=19729324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401900A Expired EP0032350B1 (en) 1980-01-09 1980-12-31 Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor

Country Status (17)

Country Link
US (1) US4369060A (en)
EP (1) EP0032350B1 (en)
JP (1) JPS56102508A (en)
AT (1) ATE14144T1 (en)
AU (1) AU540800B2 (en)
BR (1) BR8100113A (en)
CA (1) CA1172048A (en)
CS (1) CS242866B2 (en)
DE (1) DE3070844D1 (en)
ES (1) ES8203973A1 (en)
IN (1) IN154540B (en)
LU (1) LU82069A1 (en)
PL (1) PL229121A1 (en)
PT (1) PT72324B (en)
RO (1) RO81955A (en)
SU (1) SU1190993A3 (en)
ZA (1) ZA8177B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501722B1 (en) * 1981-03-11 1986-08-14 Siderurgie Fse Inst Rech PROCESS FOR THE PNEUMATIC BREWING OF A METAL BATH
US4488903A (en) * 1984-03-14 1984-12-18 Union Carbide Corporation Rapid decarburization steelmaking process
AT382889B (en) * 1984-03-15 1987-04-27 Voest Alpine Ag RINSING DEVICE FOR A METALLURGICAL VESSEL
US4529442A (en) * 1984-04-26 1985-07-16 Allegheny Ludlum Steel Corporation Method for producing steel in a top oxygen blown vessel
US4599107A (en) * 1985-05-20 1986-07-08 Union Carbide Corporation Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining
AT384034B (en) * 1986-02-03 1987-09-25 Voest Alpine Ag RINSING DEVICE FOR A METALLURGICAL VESSEL
FR2632971B1 (en) * 1988-06-17 1993-09-03 Vallourec PROCESS FOR TREATING LIQUID STEEL BY GAS INJECTION THROUGH THE BOTTOM OF POCKET
LU92813B1 (en) * 2015-09-02 2017-03-20 Wurth Paul Sa Enhanced pressurising of bulk material in lock hoppers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU42419A1 (en) * 1961-10-16 1962-11-26

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1210459A (en) * 1957-12-02 1960-03-09 A R B E D Steelmaking process and converter for this or similar process
US3854932A (en) * 1973-06-18 1974-12-17 Allegheny Ludlum Ind Inc Process for production of stainless steel
FR2322202A1 (en) * 1975-08-29 1977-03-25 Siderurgie Fse Inst Rech Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades
US4198230A (en) * 1977-05-04 1980-04-15 Eisenwerk-Gesellschaft Maximilianshutte Mbh Steelmaking process
US4195985A (en) * 1977-12-10 1980-04-01 Eisenwerk-Gesellschaft Maximilianshutte Mbh. Method of improvement of the heat-balance in the refining of steel
US4280838A (en) * 1979-05-24 1981-07-28 Sumitomo Metal Industries, Ltd. Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU42419A1 (en) * 1961-10-16 1962-11-26

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE DE METALLURGIE, Vol. 75, No. 6, Juin 1978 G. DENIER et al.: "Nouvelles perspectives de l'affinage LD. Etudes physico-chimiques et tests a l'echelle pilote", pages 415-426. * pages 415-417 * *

Also Published As

Publication number Publication date
JPS56102508A (en) 1981-08-17
ES498382A0 (en) 1982-04-01
ES8203973A1 (en) 1982-04-01
IN154540B (en) 1984-11-10
ZA8177B (en) 1982-01-27
PL229121A1 (en) 1981-09-18
AU540800B2 (en) 1984-12-06
BR8100113A (en) 1981-07-21
CA1172048A (en) 1984-08-07
RO81955B (en) 1983-06-30
SU1190993A3 (en) 1985-11-07
EP0032350A2 (en) 1981-07-22
AU6604681A (en) 1981-07-16
ATE14144T1 (en) 1985-07-15
CS242866B2 (en) 1986-05-15
US4369060A (en) 1983-01-18
EP0032350B1 (en) 1985-07-03
DE3070844D1 (en) 1985-08-08
LU82069A1 (en) 1981-09-10
PT72324B (en) 1981-12-18
RO81955A (en) 1983-07-07
PT72324A (en) 1981-02-01

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