EP0034108B1 - Procédé d'affinage d'un bain de métal - Google Patents

Procédé d'affinage d'un bain de métal Download PDF

Info

Publication number
EP0034108B1
EP0034108B1 EP81630003A EP81630003A EP0034108B1 EP 0034108 B1 EP0034108 B1 EP 0034108B1 EP 81630003 A EP81630003 A EP 81630003A EP 81630003 A EP81630003 A EP 81630003A EP 0034108 B1 EP0034108 B1 EP 0034108B1
Authority
EP
European Patent Office
Prior art keywords
bath
oxygen
refining
height
melt
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
Application number
EP81630003A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034108A1 (fr
Inventor
Paul Metz
François Schleimer
Ferdinand Goedert
Lucien Lorang
Romain Henrion
Fernand Thill
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.)
Arcelor Luxembourg SA
Original Assignee
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
Application filed by Arbed SA filed Critical Arbed SA
Priority to AT81630003T priority Critical patent/ATE14320T1/de
Publication of EP0034108A1 publication Critical patent/EP0034108A1/fr
Application granted granted Critical
Publication of EP0034108B1 publication Critical patent/EP0034108B1/fr
Expired legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a method for refining a metal bath, in particular by controlling the supply of oxygen from above and bubbling with inert gas from the bottom of the crucible.
  • a high height of the spray head results in a preferential oxidation of the slag which takes on a frothy consistency, which promotes dephosphorization and desulfurization.
  • a low height of the lance head leads to an accelerated decarburization and to an increased release of heat, especially at the point of impact of the oxygen jet, which heat can be used for the fusion of solid materials incorporated in the bath.
  • the slag must necessarily have an adjustable degree of reactivity as well as an essentially fluid consistency, also adjustable, to allow the conduct of the refining under conditions recognized as favorable, both from the point of view of the post-combustion of the CO than from the point of view of dephosphorization and desulfurization of the bath. Along with this, it is necessary to monitor the momentary degree of decarburization of the bath as a function of the oxygen injected.
  • a blowing lance which has a main oxygen circuit and a secondary oxygen circuit, to clearly differentiate the oxygen jet intended to enter the bath from the added secondary oxygen. to support the post-combustion of CO above the bath level.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Coating With Molten Metal (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
  • Electrotherapy Devices (AREA)
  • General Induction Heating (AREA)
EP81630003A 1980-01-09 1981-01-07 Procédé d'affinage d'un bain de métal Expired EP0034108B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81630003T ATE14320T1 (de) 1980-01-09 1981-01-07 Verfahren zum raffinieren einer metallschmelze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82070A LU82070A1 (fr) 1980-01-09 1980-01-09 Procede d'affinage d'un bain de metal
LU82070 1980-01-09

Publications (2)

Publication Number Publication Date
EP0034108A1 EP0034108A1 (fr) 1981-08-19
EP0034108B1 true EP0034108B1 (fr) 1985-07-17

Family

ID=19729325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81630003A Expired EP0034108B1 (fr) 1980-01-09 1981-01-07 Procédé d'affinage d'un bain de métal

Country Status (15)

Country Link
US (1) US4334922A (en(2012))
EP (1) EP0034108B1 (en(2012))
JP (1) JPS56102509A (en(2012))
AT (1) ATE14320T1 (en(2012))
AU (1) AU536836B2 (en(2012))
BR (1) BR8100121A (en(2012))
CA (1) CA1157659A (en(2012))
CS (1) CS249112B2 (en(2012))
DE (1) DE3171356D1 (en(2012))
ES (1) ES8203103A1 (en(2012))
LU (1) LU82070A1 (en(2012))
PL (1) PL229120A1 (en(2012))
PT (1) PT72323B (en(2012))
RO (1) RO81435A (en(2012))
ZA (1) ZA808091B (en(2012))

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529442A (en) * 1984-04-26 1985-07-16 Allegheny Ludlum Steel Corporation Method for producing steel in a top oxygen blown vessel
US5885322A (en) * 1996-03-22 1999-03-23 Steel Technology Corporation Method for reducing iron losses in an iron smelting process
CN115044729B (zh) * 2022-06-28 2023-11-03 日照钢铁控股集团有限公司 一种高废钢比条件下转炉低热值煤气高效回收方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU69358A1 (en(2012)) * 1973-02-16 1974-05-17
LU69388A1 (en(2012)) * 1973-02-15 1974-05-29

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1363687A (fr) * 1963-07-17 1964-06-12 Bot Brassert Oxygen Technik Ag Procédé et dispositif de réglage de fonctionnement pour opérations de soufflage ou pour des méthodes analogues d'affinage métallurgique
US3871871A (en) * 1967-12-11 1975-03-18 Centre Nat Rech Metall Monitoring and control of pig iron refining
AT297073B (de) * 1969-04-15 1972-03-10 Voest Ag Verfahren zur Messung der Dicke der Schlackenschicht auf metallischen Bädern, insbesondere auf durch Vakuumbehandlung zu entgasenden Schmelzen
BE755456A (fr) * 1969-08-29 1971-03-01 Allegheny Ludlum Ind Inc Decarburation de l'acier fondu

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU69388A1 (en(2012)) * 1973-02-15 1974-05-29
LU69358A1 (en(2012)) * 1973-02-16 1974-05-17

Also Published As

Publication number Publication date
RO81435A (ro) 1983-06-01
JPS56102509A (en) 1981-08-17
ES498381A0 (es) 1982-03-01
PT72323B (fr) 1981-12-18
CA1157659A (fr) 1983-11-29
ES8203103A1 (es) 1982-03-01
EP0034108A1 (fr) 1981-08-19
ZA808091B (en) 1982-01-27
AU536836B2 (en) 1984-05-24
PT72323A (fr) 1981-02-01
US4334922A (en) 1982-06-15
LU82070A1 (fr) 1981-09-10
ATE14320T1 (de) 1985-08-15
BR8100121A (pt) 1981-07-28
DE3171356D1 (en) 1985-08-22
CS249112B2 (en) 1987-03-12
AU6589380A (en) 1981-07-16
PL229120A1 (en(2012)) 1981-09-04

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