[go: up one dir, main page]

EP0572848A3 - Method of determination of the end-point during oxygen steelmaking in a converter - Google Patents

Method of determination of the end-point during oxygen steelmaking in a converter Download PDF

Info

Publication number
EP0572848A3
EP0572848A3 EP19930107946 EP93107946A EP0572848A3 EP 0572848 A3 EP0572848 A3 EP 0572848A3 EP 19930107946 EP19930107946 EP 19930107946 EP 93107946 A EP93107946 A EP 93107946A EP 0572848 A3 EP0572848 A3 EP 0572848A3
Authority
EP
European Patent Office
Prior art keywords
converter
determination
point during
during oxygen
oxygen steelmaking
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
EP19930107946
Other languages
German (de)
Other versions
EP0572848A2 (en
EP0572848B1 (en
Inventor
Pervez Dr Patel
Hans-Joachim Dr Selenz
Friedrich Dr-Ing Hoefer
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.)
Georgsmarienhuette GmbH
Original Assignee
KLOECKNER EDELSTAHL GmbH
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 KLOECKNER EDELSTAHL GmbH filed Critical KLOECKNER EDELSTAHL GmbH
Publication of EP0572848A2 publication Critical patent/EP0572848A2/en
Publication of EP0572848A3 publication Critical patent/EP0572848A3/en
Application granted granted Critical
Publication of EP0572848B1 publication Critical patent/EP0572848B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

In a method of determination of the end point during oxygen steelmaking in a converter, it is proposed according to the invention that, during the conversion, waste gas constituents continuously escaping from the converter are analysed, preferably by mass spectrometry, and parameters are generated, from the measured values, whose significant change in time gives a signal for ending the oxygen feed.
EP93107946A 1992-05-30 1993-05-15 Method of determination of the end-point during oxygen steelmaking in a converter Expired - Lifetime EP0572848B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217933 1992-05-30
DE4217933A DE4217933C2 (en) 1992-05-30 1992-05-30 Method for determining the end point for the fresh process in oxygen converters

Publications (3)

Publication Number Publication Date
EP0572848A2 EP0572848A2 (en) 1993-12-08
EP0572848A3 true EP0572848A3 (en) 1994-08-10
EP0572848B1 EP0572848B1 (en) 1998-07-08

Family

ID=6460082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107946A Expired - Lifetime EP0572848B1 (en) 1992-05-30 1993-05-15 Method of determination of the end-point during oxygen steelmaking in a converter

Country Status (3)

Country Link
EP (1) EP0572848B1 (en)
AT (1) ATE168137T1 (en)
DE (2) DE4217933C2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4412236C2 (en) * 1993-06-15 1998-04-16 Mannesmann Ag Process for the production of steel with a low phosphorus content
EP0633322B1 (en) * 1993-06-15 2001-02-28 MANNESMANN Aktiengesellschaft Process for making steel with low phosphorus content
DE10346769A1 (en) * 2003-10-06 2005-04-21 Zimmer Ag Automatic analyzer and method for monitoring polymer production by mass spectrometry
DE10346768A1 (en) 2003-10-06 2005-04-21 Zimmer Ag Method for automatic analysis of polymer-containing waste and automatic analyzer for this purpose
DE102006050888A1 (en) * 2006-10-27 2008-04-30 Siemens Ag Control of carbon dioxide during steel production comprises feeding oxygen into melt to remove carbon as carbon dioxide, actual amount produced being measured and compared with desired value with regard to oxygen and carbon present
DE102009060258A1 (en) * 2009-12-23 2011-06-30 SMS Siemag Aktiengesellschaft, 40237 Control of the converter process by exhaust signals
RU2652663C2 (en) * 2015-11-27 2018-04-28 Общество Ограниченной Ответственности "Научно-производственное объединение "Санкт-Петербургская электротехническая компания" Method of controlling purge process of converter melting with use of waste gas information
CN113388712B (en) * 2021-06-15 2022-04-05 马鞍山钢铁股份有限公司 Low-carbon LF (ladle furnace) process steel converter smelting method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2836694A1 (en) * 1977-08-22 1979-03-08 Kobe Steel Ltd PROCEDURE FOR CONTROLLING THE END TIME OF WIND CLEANING IN A CONVERTER
DE2839316A1 (en) * 1977-09-10 1979-03-22 Nisshin Steel Co Ltd METHOD FOR CONTROLLING A STEEL PRODUCTION METHOD UNDER ATMOSPHERIC PRESSURE
DE2835548A1 (en) * 1978-08-14 1980-02-28 Kloeckner Werke Ag Continuous gas analysis for metallurgical processes - used with other data in computer, esp. to control the carbon content of sponge iron or other material in furnaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2836694A1 (en) * 1977-08-22 1979-03-08 Kobe Steel Ltd PROCEDURE FOR CONTROLLING THE END TIME OF WIND CLEANING IN A CONVERTER
DE2839316A1 (en) * 1977-09-10 1979-03-22 Nisshin Steel Co Ltd METHOD FOR CONTROLLING A STEEL PRODUCTION METHOD UNDER ATMOSPHERIC PRESSURE
DE2835548A1 (en) * 1978-08-14 1980-02-28 Kloeckner Werke Ag Continuous gas analysis for metallurgical processes - used with other data in computer, esp. to control the carbon content of sponge iron or other material in furnaces

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
K. D. SCHUY ET AL.: "Massenspektrometrische Prozessgasanalyse ....", STAHL UND EISEN, vol. 92, no. 25, 7 December 1972 (1972-12-07), DUSSELDORF DE, pages 1278 - 1283 *
K. W. LANGE: "Zur Prozess-Steuerung bei Sauerstoffblasverfahren", STAHL UND EISEN, vol. 102, no. 10, 17 May 1982 (1982-05-17), DUSSELDORF DE, pages 515 - 519, XP001261113 *
T. TAKAWA ET AL.: "Analysis of Converter Process ....", TRANSACTIONS ISIJ, vol. 28, 1988, TOKIO, JP, pages 59 - 67 *

Also Published As

Publication number Publication date
DE59308730D1 (en) 1998-08-13
DE4217933C2 (en) 1995-03-23
ATE168137T1 (en) 1998-07-15
DE4217933A1 (en) 1993-12-02
EP0572848A2 (en) 1993-12-08
EP0572848B1 (en) 1998-07-08

Similar Documents

Publication Publication Date Title
GB2027058B (en) Process for recovering and utilizing useful substances frommolten metal produced during reduction treatment of slag from an oxygen converter
DE3175274D1 (en) Analytical method for the determination of nitrogen, carbon, hydrogen and sulfur or chlorine and apparatus therefor
EP0572848A3 (en) Method of determination of the end-point during oxygen steelmaking in a converter
GB2078917B (en) Method for preheating steel scrap by exhaust gas from steelmaking electric furnace
US4530102A (en) Lancing in electric arc steelmaking
CA2235499A1 (en) Method and apparatus to determine and control the carbon content of steel in a bof vessel
AU5758686A (en) Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining
GB2085562B (en) Oxygen lance for iron refining
JPS55141664A (en) Aging treatment for waste gas oxygen sensor
GB8827387D0 (en) Arc exposure monitor
ES473217A1 (en) Method of controlling steel making process under atmospheric pressure
GB2014762A (en) Apparatus for controlling the oxygen content of exhaust gases
DE3572996D1 (en) Rapid decarburization steelmaking process
JPS5418434A (en) Submerge arc welding method for 100kg*mm2 grade highhtensile steel
DE59806252D1 (en) Method and device for detecting the state of slag and the stability of the arc in arc furnaces
AU567212B2 (en) Pre-deoxidation process in steelmaking
JPS5431012A (en) Process for determining flow rate of waste gas by analyzing oxygen converter waste gas
JPS5224905A (en) Tapping method in converters
EP0295915A3 (en) Improved method and scavenger gas for the analysis of oxygen-containing components using atomic emission spectrometry
UA39117C2 (en) Method for metal refining
JPS5763614A (en) Refining method in top and bottom blowing converter
UA10117A (en) Method for microalloying of steel with vanadium
JPS6455317A (en) Converter blowing method
JPS6430625A (en) Method for desulfurizing gas from smelting and reducing furnace
CS921786A1 (en) Method of magnesium sulphate concentration depression during desulphurize waste gases by magnezite method

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

17P Request for examination filed

Effective date: 19930515

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI 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 CH DE ES FR GB GR IT LI LU NL SE

17Q First examination report despatched

Effective date: 19960423

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GEORGSMARIENHUETTE GMBH

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980708

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: 19980708

Ref country code: GR

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

Effective date: 19980708

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980708

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980708

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980708

REF Corresponds to:

Ref document number: 168137

Country of ref document: AT

Date of ref document: 19980715

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59308730

Country of ref document: DE

Date of ref document: 19980813

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981008

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19980708

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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: 19990515

Ref country code: AT

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

Effective date: 19990515

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

Ref country code: LI

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

Effective date: 19990531

Ref country code: CH

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

Effective date: 19990531

Ref country code: BE

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

Effective date: 19990531

26N No opposition filed
BERE Be: lapsed

Owner name: GEORGSMARIENHUTTE G.M.B.H.

Effective date: 19990531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Payment date: 20120702

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59308730

Country of ref document: DE

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130516