FR2322202A1 - Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades - Google Patents

Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades

Info

Publication number
FR2322202A1
FR2322202A1 FR7526741A FR7526741A FR2322202A1 FR 2322202 A1 FR2322202 A1 FR 2322202A1 FR 7526741 A FR7526741 A FR 7526741A FR 7526741 A FR7526741 A FR 7526741A FR 2322202 A1 FR2322202 A1 FR 2322202A1
Authority
FR
France
Prior art keywords
steel
bottom blowing
various grades
blowing
improved quality
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.)
Withdrawn
Application number
FR7526741A
Other languages
French (fr)
Inventor
Aristide Berthet
Guy Denier
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
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to FR7526741A priority Critical patent/FR2322202A1/en
Publication of FR2322202A1 publication Critical patent/FR2322202A1/en
Withdrawn legal-status Critical Current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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

A process for mfg. steel by refining pig iron with industrially pure O2 is described. The O2 is introduced via a lance and at the same time the metl is stirred by bottom blowing with an inert gas opt. mixed with O2. The process combines the advantages of both bottom blowing and O2 lancing. Various grades of steel can be obtd. The quality is improved due to a low rate of decarburisation, significant rates of desulphurisation and dephosphorisation and a lowering of the amt. of O2 dissolved in the metal. Less basic slags which contain smaller amts. of Fe oxide can be worked. This leads to reduced consumption of lime, O2 and oxidised Fe. The O2 blowing time is also slightly improved. Desulphurising or dephosphorising agents may be added with the bottom blown gas. Measurements necessary in automated process, e.g. analysis and temp., are more exact and the results are better.
FR7526741A 1975-08-29 1975-08-29 Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades Withdrawn FR2322202A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7526741A FR2322202A1 (en) 1975-08-29 1975-08-29 Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7526741A FR2322202A1 (en) 1975-08-29 1975-08-29 Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades

Publications (1)

Publication Number Publication Date
FR2322202A1 true FR2322202A1 (en) 1977-03-25

Family

ID=9159508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7526741A Withdrawn FR2322202A1 (en) 1975-08-29 1975-08-29 Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades

Country Status (1)

Country Link
FR (1) FR2322202A1 (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015396A1 (en) * 1979-02-07 1980-09-17 Union Carbide Corporation A method for increasing vessel lining life for basic oxygen furnaces
EP0018935A1 (en) * 1979-04-30 1980-11-12 Arbed S.A. Process for refining a metal bath containing solid cooling substances
FR2457902A1 (en) * 1979-05-29 1980-12-26 Daido Steel Co Ltd PROCESS FOR REFINING MOLTEN STEEL CONTAINING CHROME
EP0023627A1 (en) * 1979-08-07 1981-02-11 Eisenwerk-Gesellschaft Maximilianshütte mbH Process for producing low-hydrogen content steel in a bottom-blown oxygen converter
FR2463187A1 (en) * 1979-08-02 1981-02-20 Nippon Kokan Kk METHOD OF MANUFACTURING STEEL IN A CONVERTER WITH OXYGEN BLOWING ON THE SURFACE OF THE MOLTEN METAL AND BLOWING OF AGITATOR GAS BY THE BASE OF THE CONVERTER
FR2472616A1 (en) * 1979-12-28 1981-07-03 Creusot Loire Refining of molten metal, esp. steel, in oxygen converter - using top blowing through lance, and bottom blowing through tuyeres with small outlet dia.
FR2473064A1 (en) * 1980-01-02 1981-07-10 Siderurgie Fse Inst Rech PROCESS FOR PNEUMATIC BREWING OF A FUSION METAL BATH
EP0032350A2 (en) * 1980-01-09 1981-07-22 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor
FR2475574A2 (en) * 1980-02-12 1981-08-14 Creusot Loire Refining of molten metal, esp. steel, in oxygen converter - using top blowing through lance, and bottom blowing through tuyeres with small outlet dia.
FR2476135A1 (en) * 1980-02-18 1981-08-21 Kawasaki Steel Co
EP0053554A1 (en) * 1980-12-02 1982-06-09 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Process for the manufacture of bottoms for metallurgical vessels
FR2501722A1 (en) * 1981-03-11 1982-09-17 Siderurgie Fse Inst Rech PROCESS FOR PNEUMATIC BREWING OF A METAL BATH
FR2504664A1 (en) * 1981-04-24 1982-10-29 Francais Aciers Speciaux DEVICE FOR BLOWING BREWING GAS IN A METAL REFINING CONVERTER
FR2506332A1 (en) * 1981-05-20 1982-11-26 Usinor Gas stirring of an oxygen steel converter - with controlled distribution to base injectors
EP0031776B1 (en) * 1979-12-28 1983-05-18 Creusot-Loire Combined blowing method for refining metals in a converter
EP0081448A1 (en) * 1981-12-04 1983-06-15 Arbed S.A. Process and apparatus for refining a metal bath containing solid cooling materials
FR2525632A1 (en) * 1982-04-22 1983-10-28 Siderurgie Fse Inst Rech PROCESSING PROCESS FOR IMPROVING THE PERMEABILITY OF METALLURGIC CONTAINER FILLS HAVING PERMEABLE REFRACTORY ELEMENTS, AND MATERIALS FOR ITS IMPLEMENTATION
FR2525633A1 (en) * 1982-04-22 1983-10-28 Siderurgie Fse Inst Rech METHOD FOR IMPROVING THE LIFETIME OF PERMEABLE REFRACTORY ELEMENTS LODGED IN THE BOTTOM OF METALLURGIC REFINING CONTAINERS, IN PARTICULAR OXYGEN-BLOW-CONTAINING OXYGEN STEEL CONVERTERS
EP0060305B1 (en) * 1980-09-19 1985-01-09 Kawasaki Steel Corporation Method for smelting using top-and bottom-blown converter

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015396A1 (en) * 1979-02-07 1980-09-17 Union Carbide Corporation A method for increasing vessel lining life for basic oxygen furnaces
EP0018935A1 (en) * 1979-04-30 1980-11-12 Arbed S.A. Process for refining a metal bath containing solid cooling substances
FR2457902A1 (en) * 1979-05-29 1980-12-26 Daido Steel Co Ltd PROCESS FOR REFINING MOLTEN STEEL CONTAINING CHROME
FR2463187A1 (en) * 1979-08-02 1981-02-20 Nippon Kokan Kk METHOD OF MANUFACTURING STEEL IN A CONVERTER WITH OXYGEN BLOWING ON THE SURFACE OF THE MOLTEN METAL AND BLOWING OF AGITATOR GAS BY THE BASE OF THE CONVERTER
EP0023627A1 (en) * 1979-08-07 1981-02-11 Eisenwerk-Gesellschaft Maximilianshütte mbH Process for producing low-hydrogen content steel in a bottom-blown oxygen converter
FR2472616A1 (en) * 1979-12-28 1981-07-03 Creusot Loire Refining of molten metal, esp. steel, in oxygen converter - using top blowing through lance, and bottom blowing through tuyeres with small outlet dia.
EP0031776B1 (en) * 1979-12-28 1983-05-18 Creusot-Loire Combined blowing method for refining metals in a converter
FR2473064A1 (en) * 1980-01-02 1981-07-10 Siderurgie Fse Inst Rech PROCESS FOR PNEUMATIC BREWING OF A FUSION METAL BATH
EP0032343A1 (en) * 1980-01-02 1981-07-22 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Method for the gaseous stirring of a molten metal bath
EP0032350A2 (en) * 1980-01-09 1981-07-22 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor
EP0032350B1 (en) * 1980-01-09 1985-07-03 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Method for refining a molten metal bath in a crucible with oxygen injection from above, and crucible used therefor
FR2475574A2 (en) * 1980-02-12 1981-08-14 Creusot Loire Refining of molten metal, esp. steel, in oxygen converter - using top blowing through lance, and bottom blowing through tuyeres with small outlet dia.
FR2476135A1 (en) * 1980-02-18 1981-08-21 Kawasaki Steel Co
EP0060305B1 (en) * 1980-09-19 1985-01-09 Kawasaki Steel Corporation Method for smelting using top-and bottom-blown converter
EP0053554A1 (en) * 1980-12-02 1982-06-09 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Process for the manufacture of bottoms for metallurgical vessels
FR2501722A1 (en) * 1981-03-11 1982-09-17 Siderurgie Fse Inst Rech PROCESS FOR PNEUMATIC BREWING OF A METAL BATH
EP0062548A1 (en) * 1981-03-11 1982-10-13 INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID) France Process for gas-stirring a metal bath
EP0064449A1 (en) * 1981-04-24 1982-11-10 Compagnie Francaise Des Aciers Speciaux Apparatus for blowing an agitating gas into a converter for refining metals
FR2504664A1 (en) * 1981-04-24 1982-10-29 Francais Aciers Speciaux DEVICE FOR BLOWING BREWING GAS IN A METAL REFINING CONVERTER
FR2506332A1 (en) * 1981-05-20 1982-11-26 Usinor Gas stirring of an oxygen steel converter - with controlled distribution to base injectors
EP0081448A1 (en) * 1981-12-04 1983-06-15 Arbed S.A. Process and apparatus for refining a metal bath containing solid cooling materials
FR2525632A1 (en) * 1982-04-22 1983-10-28 Siderurgie Fse Inst Rech PROCESSING PROCESS FOR IMPROVING THE PERMEABILITY OF METALLURGIC CONTAINER FILLS HAVING PERMEABLE REFRACTORY ELEMENTS, AND MATERIALS FOR ITS IMPLEMENTATION
FR2525633A1 (en) * 1982-04-22 1983-10-28 Siderurgie Fse Inst Rech METHOD FOR IMPROVING THE LIFETIME OF PERMEABLE REFRACTORY ELEMENTS LODGED IN THE BOTTOM OF METALLURGIC REFINING CONTAINERS, IN PARTICULAR OXYGEN-BLOW-CONTAINING OXYGEN STEEL CONVERTERS
EP0093040A1 (en) * 1982-04-22 1983-11-02 Institut De Recherches De La Siderurgie Francaise (Irsid) Process for increasing the life of gas-permeable refractory elements in the bottoms of metallurgical vessels, especially for steel-basic-oxygen furnaces
EP0093039A1 (en) * 1982-04-22 1983-11-02 Institut De Recherches De La Siderurgie Francaise (Irsid) Process for increasing the gas-permeability of fire-proof elements in the bottoms of metallurgical vessels, and materials for carrying it out

Similar Documents

Publication Publication Date Title
FR2322202A1 (en) Steel refining by oxygen lancing and bottom blowing - for improved quality steel of various grades
DE69020596D1 (en) Process for the smelting reduction of nickel ores.
CA1333663C (en) Method of decarburizing high cr molten metal
TW261635B (en) Process of decarbonization smelting on chromium-containing ingot steel
AU604974B2 (en) Process for producing molten stainless steel
ATE39497T1 (en) METHOD OF REFINING PIG IRON.
ES8402355A1 (en) Process for producing steel in a converter from pig iron and ferrous scrap.
CA1336745C (en) Method for producing chromium containing molten iron with low sulphur concentration
JPS5623214A (en) Dephosphorization accelerating method in oxygen top blowing steel making method
JPS55107715A (en) Blowing method of dephosphorizer to bottom blowing converter
JPS56130416A (en) Steel making method
SU447433A1 (en) The method of steelmaking
JPS6455360A (en) Smelting reduction process for chromitite
JPS5594425A (en) Converter steel making method which reduces phosphorus content
SU621730A1 (en) Method of desulfurization of iron outside furnace
JPH111714A (en) Steelmaking method
JPS5623213A (en) Melting method of low phosphorus steel in oxygen top blowing steel making method
JPS55107718A (en) Production of molten steel
SU675073A1 (en) Method of smelting steel
SU945180A1 (en) Method for producing steel in convertor
JPS5620114A (en) Desulfurization accelerating method in oxygen top blowing converter steel making method
GB1350499A (en) Process and apparatus for continuous steel-making
GB1459956A (en) Method of controlling temperature in q-bop steel making process
JPS5244715A (en) Continuous method of refining molten iron alloy by using alkali metal compoun
JPS5729516A (en) Top-blown oxygen steelmaking method

Legal Events

Date Code Title Description
ST Notification of lapse