EP0030360A3 - Steel-making process - Google Patents

Steel-making process Download PDF

Info

Publication number
EP0030360A3
EP0030360A3 EP80107542A EP80107542A EP0030360A3 EP 0030360 A3 EP0030360 A3 EP 0030360A3 EP 80107542 A EP80107542 A EP 80107542A EP 80107542 A EP80107542 A EP 80107542A EP 0030360 A3 EP0030360 A3 EP 0030360A3
Authority
EP
European Patent Office
Prior art keywords
steel
making process
ferrous metal
molten ferrous
oxygen
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
EP80107542A
Other languages
German (de)
Other versions
EP0030360A2 (en
EP0030360B2 (en
EP0030360B1 (en
Inventor
Karl Dr.-Ing. E.H. Brotzmann
Paul-Gerhard Mantey
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.)
Kloeckner CRA Patent GmbH
Original Assignee
Eisenwerke Gesellschaf Maximilianshuette mbH
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=25782505&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0030360(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19792951156 external-priority patent/DE2951156A1/en
Priority claimed from DE19803008145 external-priority patent/DE3008145C2/en
Application filed by Eisenwerke Gesellschaf Maximilianshuette mbH filed Critical Eisenwerke Gesellschaf Maximilianshuette mbH
Priority to AT80107542T priority Critical patent/ATE5202T1/en
Publication of EP0030360A2 publication Critical patent/EP0030360A2/en
Publication of EP0030360A3 publication Critical patent/EP0030360A3/en
Application granted granted Critical
Publication of EP0030360B1 publication Critical patent/EP0030360B1/en
Publication of EP0030360B2 publication Critical patent/EP0030360B2/en
Expired 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
    • 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
    • C21C5/305—Afterburning

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Oxygen is introduced onto the surface of a molten ferrous metal through at least one water-cooled lance disposed above the melt surface while an oxygen free gas in which is entrained ground solids is intermittently introduced into the molten ferrous metal through tuyeres disposed below the melt surface.
EP80107542A 1979-12-11 1980-12-03 Steel-making process Expired EP0030360B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107542T ATE5202T1 (en) 1979-12-11 1980-12-03 STEEL MAKING PROCESS.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2951156 1979-12-11
DE19792951156 DE2951156A1 (en) 1979-12-11 1979-12-11 Steel prodn. in top and bottom blown converter - with bottom nozzles fed at least periodically with solids-laden oxygen-free gas
DE3008145 1980-03-04
DE19803008145 DE3008145C2 (en) 1980-03-04 1980-03-04 Steel making process

Publications (4)

Publication Number Publication Date
EP0030360A2 EP0030360A2 (en) 1981-06-17
EP0030360A3 true EP0030360A3 (en) 1981-09-02
EP0030360B1 EP0030360B1 (en) 1983-11-02
EP0030360B2 EP0030360B2 (en) 1988-09-28

Family

ID=25782505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107542A Expired EP0030360B2 (en) 1979-12-11 1980-12-03 Steel-making process

Country Status (8)

Country Link
US (1) US4356035A (en)
EP (1) EP0030360B2 (en)
AT (1) ATE5202T1 (en)
AU (1) AU540799B2 (en)
BR (1) BR8008075A (en)
CA (1) CA1147966A (en)
CZ (1) CZ278884B6 (en)
PL (1) PL228390A1 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334921A (en) * 1979-04-16 1982-06-15 Nippon Steel Corporation Converter steelmaking process
JPS5757816A (en) * 1980-09-19 1982-04-07 Kawasaki Steel Corp Steel making method by composite top and bottom blown converter
AU8474782A (en) * 1981-06-19 1982-12-23 British Steel Corp. Refining of steel from pig iron
LU84390A1 (en) * 1982-09-27 1984-04-24 Arbed METHOD AND DEVICE FOR HEATING A STEEL BATH FILLED WITH SCRAP
US4472195A (en) * 1983-08-15 1984-09-18 Olin Corporation Process for decarburizing alloy melts
DE3340472A1 (en) * 1983-11-09 1985-05-15 Axel Friedrich 6670 St Ingbert Gonschorek LD CONVERTER WITH AFTERBURN
JPS60184616A (en) * 1984-03-02 1985-09-20 Kawasaki Steel Corp Converter steelmaking process using gaseous carbon monoxide as agitating gas
US4488903A (en) * 1984-03-14 1984-12-18 Union Carbide Corporation Rapid decarburization steelmaking process
US4582479A (en) * 1984-12-31 1986-04-15 The Cadre Corporation Fuel cooled oxy-fuel burner
US4599107A (en) * 1985-05-20 1986-07-08 Union Carbide Corporation Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining
DE3607777A1 (en) * 1986-03-08 1987-09-17 Kloeckner Cra Tech METHOD FOR PRODUCING STEEL FROM SCRAP
US4647019A (en) * 1986-04-01 1987-03-03 Union Carbide Corporation Very small refining vessel
US4708738A (en) * 1986-04-01 1987-11-24 Union Carbide Corporation Method for refining very small heats of molten metal
DE3629055A1 (en) * 1986-08-27 1988-03-03 Kloeckner Cra Tech METHOD FOR INCREASING ENERGY IN ELECTRIC ARC FURNACES
DE4213007C1 (en) * 1992-04-21 1993-12-16 Tech Resources Pty Ltd Method and device for sealing nozzles in the surrounding refractory lining
AUPN226095A0 (en) 1995-04-07 1995-05-04 Technological Resources Pty Limited A method of producing metals and metal alloys
AUPO426396A0 (en) 1996-12-18 1997-01-23 Technological Resources Pty Limited A method of producing iron
AUPO426096A0 (en) 1996-12-18 1997-01-23 Technological Resources Pty Limited Method and apparatus for producing metals and metal alloys
AUPO944697A0 (en) * 1997-09-26 1997-10-16 Technological Resources Pty Limited A method of producing metals and metal alloys
AUPP442598A0 (en) 1998-07-01 1998-07-23 Technological Resources Pty Limited Direct smelting vessel
AUPP483898A0 (en) 1998-07-24 1998-08-13 Technological Resources Pty Limited A direct smelting process & apparatus
MY119760A (en) 1998-07-24 2005-07-29 Tech Resources Pty Ltd A direct smelting process
AUPP554098A0 (en) 1998-08-28 1998-09-17 Technological Resources Pty Limited A process and an apparatus for producing metals and metal alloys
AUPP570098A0 (en) 1998-09-04 1998-10-01 Technological Resources Pty Limited A direct smelting process
AUPP647198A0 (en) 1998-10-14 1998-11-05 Technological Resources Pty Limited A process and an apparatus for producing metals and metal alloys
AUPP805599A0 (en) 1999-01-08 1999-02-04 Technological Resources Pty Limited A direct smelting process
AUPQ083599A0 (en) 1999-06-08 1999-07-01 Technological Resources Pty Limited Direct smelting vessel
AUPQ152299A0 (en) 1999-07-09 1999-08-05 Technological Resources Pty Limited Start-up procedure for direct smelting process
AUPQ205799A0 (en) 1999-08-05 1999-08-26 Technological Resources Pty Limited A direct smelting process
AUPQ213099A0 (en) 1999-08-10 1999-09-02 Technological Resources Pty Limited Pressure control
AUPQ308799A0 (en) 1999-09-27 1999-10-21 Technological Resources Pty Limited A direct smelting process
AUPQ346399A0 (en) 1999-10-15 1999-11-11 Technological Resources Pty Limited Stable idle procedure
AUPQ365799A0 (en) 1999-10-26 1999-11-18 Technological Resources Pty Limited A direct smelting apparatus and process
US6602321B2 (en) 2000-09-26 2003-08-05 Technological Resources Pty. Ltd. Direct smelting process
JP4625637B2 (en) 2002-02-22 2011-02-02 シャイア エルエルシー Active substance delivery system and method for protecting and administering an active substance
ES2934857T3 (en) 2018-02-16 2023-02-27 Sms Group Gmbh Method for refining molten metal using a converter
DE102019209109A1 (en) 2019-06-24 2020-12-24 Sms Group Gmbh Converter and process for refining molten metal
DE102021128987A1 (en) 2021-11-08 2023-05-11 Rhm Rohstoff-Handelsgesellschaft Mbh Process for remelting sponge iron and/or hot-pressed sponge iron and scrap into crude steel in a converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755165A1 (en) * 1977-12-10 1979-07-26 Maximilianshuette Eisenwerk Refining cast iron - by blowing oxygen into a converter full of molten iron both above and below the melt level

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT337736B (en) * 1973-02-12 1977-07-11 Voest Ag METHOD OF REFRESHING BIG IRON
US3854932A (en) * 1973-06-18 1974-12-17 Allegheny Ludlum Ind Inc Process for production of stainless steel
GB1586762A (en) * 1976-05-28 1981-03-25 British Steel Corp Metal refining method and apparatus
US4198230A (en) * 1977-05-04 1980-04-15 Eisenwerk-Gesellschaft Maximilianshutte Mbh Steelmaking process
DE2737832C3 (en) * 1977-08-22 1980-05-22 Fried. Krupp Huettenwerke Ag, 4630 Bochum Use of blower nozzles with variable cross-section for the production of stainless steels
US4195985A (en) * 1977-12-10 1980-04-01 Eisenwerk-Gesellschaft Maximilianshutte Mbh. Method of improvement of the heat-balance in the refining of steel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755165A1 (en) * 1977-12-10 1979-07-26 Maximilianshuette Eisenwerk Refining cast iron - by blowing oxygen into a converter full of molten iron both above and below the melt level

Also Published As

Publication number Publication date
AU540799B2 (en) 1984-12-06
CZ278884B6 (en) 1994-08-17
EP0030360A2 (en) 1981-06-17
PL228390A1 (en) 1981-08-07
AU6530280A (en) 1981-06-18
ATE5202T1 (en) 1983-11-15
US4356035A (en) 1982-10-26
CA1147966A (en) 1983-06-14
EP0030360B2 (en) 1988-09-28
EP0030360B1 (en) 1983-11-02
BR8008075A (en) 1981-06-30

Similar Documents

Publication Publication Date Title
EP0030360A3 (en) Steel-making process
GB2011477B (en) Process for the production of steel from pig iron and scrap
GB1435189A (en) Process and equipment for blowing fine-grain reagents into steel melts
ZA786885B (en) Process for the production of steel from pig iron and scrap
ES8107316A1 (en) Process for conditioning the slag during the refining of a metal bath.
YU42003B (en) Process for the injection of a gas of high oxygen cortent into a melt bath containing non-ferrous metals
GB2013246B (en) Process for the extraction of non ferrous metals from slags and other metallurgical by products
AU540800B2 (en) Converter and method of refining iron
HU913471D0 (en) Magnesium based covering product for the desulphurization of pig iron or steel melts, and the production process
DE3176955D1 (en) Process for protecting the tuyeres and the lining of a vessel for refining molten metal
EP0160376A3 (en) Method for producing steel in a top oxygen blown vessel
ES8100349A1 (en) A method for increasing vessel lining life for basic oxygen furnaces.
JPS5343019A (en) Refining method for steel with reduced slag formation
JPS52156713A (en) Treatment of steel making slag
ES251132U (en) A ladle
Macgregor et al. Process and Apparatus for Steelmaking From Scrap/Sponge
NZ225566A (en) Consumable lance having improved wear resistance
JPS53142305A (en) Preventing method for burning-out of refractories in ladle
JPS5390118A (en) Steel-making method using formed synthetic slag and resulting indecreased amount of slag discharged
IN156686B (en)
JPS5244715A (en) Continuous method of refining molten iron alloy by using alkali metal compoun
JPS5218407A (en) Process for treatment of molten iron slag
ZA793850B (en) Lance pipe for refining and refining process of molten metal
Spenceley et al. Metal Refining Processes
JPS51122670A (en) A method of treating steel-making slag

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE FR GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810820

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE FR GB IT LU NL SE

Designated state(s): AT BE FR GB IT LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19831102

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19831102

Ref country code: BE

Effective date: 19831102

REF Corresponds to:

Ref document number: 5202

Country of ref document: AT

Date of ref document: 19831115

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19831203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19831231

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: FRIED. KRUPP GMBH

Effective date: 19840731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: AR

REG Reference to a national code

Ref country code: FR

Ref legal event code: BR

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19880928

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE FR GB IT LU NL SE

NLR2 Nl: decision of opposition
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

NLS Nl: assignments of ep-patents

Owner name: KLOECKNER CRA PATENT GMBH TE DUISBURG, BONDSREPUBL

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: D3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991201

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991208

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19991228

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20001202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20001203

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 20001202

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20001203