GB2003929A - Controlling converter blow end-point by waste gas analysis - Google Patents

Controlling converter blow end-point by waste gas analysis

Info

Publication number
GB2003929A
GB2003929A GB7834135A GB7834135A GB2003929A GB 2003929 A GB2003929 A GB 2003929A GB 7834135 A GB7834135 A GB 7834135A GB 7834135 A GB7834135 A GB 7834135A GB 2003929 A GB2003929 A GB 2003929A
Authority
GB
United Kingdom
Prior art keywords
point
waste gas
blow
carbon content
gas analysis
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
GB7834135A
Other versions
GB2003929B (en
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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
Priority claimed from JP10084977A external-priority patent/JPS5433817A/en
Priority claimed from JP52132910A external-priority patent/JPS5854170B2/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of GB2003929A publication Critical patent/GB2003929A/en
Application granted granted Critical
Publication of GB2003929B publication Critical patent/GB2003929B/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

Abstract

A method for converter blow end- point control which comprises performing waste gas analyses either continuously or at timed intervals in a final stage of the blow, and determining the end-point of the blow when the carbon content of the bath coincides with a target carbon content wherein said control is effected by making use of a differential decarburization rate equation which takes account of the delay time of waste gas information between the time of occurrence of the decarburization reaction in the converter and the time of said information being detected as decarburization rate data, and a functional equation for improving the predictability of the carbon content of the bath at the end-point of the blow.
GB7834135A 1977-08-22 1978-08-22 Method for converter blow control Expired GB2003929B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10084977A JPS5433817A (en) 1977-08-22 1977-08-22 Method of controlling biowing of converter
JP52132910A JPS5854170B2 (en) 1977-11-04 1977-11-04 Converter control method

Publications (2)

Publication Number Publication Date
GB2003929A true GB2003929A (en) 1979-03-21
GB2003929B GB2003929B (en) 1982-05-26

Family

ID=26441805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7834135A Expired GB2003929B (en) 1977-08-22 1978-08-22 Method for converter blow control

Country Status (6)

Country Link
AU (1) AU507553B1 (en)
BR (1) BR7805395A (en)
CA (1) CA1118212A (en)
DE (1) DE2836694C2 (en)
FR (1) FR2401226A1 (en)
GB (1) GB2003929B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8494679B2 (en) 2009-12-23 2013-07-23 Sms Siemag Aktiengesellschaft Control of the converter process by means of exhaust gas signals
CN115341069A (en) * 2021-05-14 2022-11-15 宝山钢铁股份有限公司 Molten steel carbon content prediction control method of converter blowing end point based on online dynamic detection model

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217933C2 (en) * 1992-05-30 1995-03-23 Georgsmarienhuette Gmbh Method for determining the end point for the fresh process in oxygen converters
AT406587B (en) * 1997-07-08 2000-06-26 Voest Alpine Stahl Process for determining the end of blowing during the refining of a steel melt in a converter
CN114150102B (en) * 2021-11-26 2023-05-02 德龙钢铁有限公司 Flue fan control method based on dynamic decarburization rate of combined blown converter molten pool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720404A (en) * 1967-06-27 1973-03-13 Westinghouse Electric Corp System for controlling carbon removal in a basic oxygen furnace
US3779744A (en) * 1972-04-05 1973-12-18 Westinghouse Electric Corp Modification and improvement to dynamic bof control
JPS5131002B2 (en) * 1972-12-11 1976-09-04
DE2505065B2 (en) * 1975-02-06 1976-12-16 Siemens AG, 1000 Berlin und 8000 München PROCEDURE FOR DETERMINING THE ACTUAL CARBON CONTENT OF THE OXYGEN INFLATABLE CONVERTER DURING BUBBLING

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8494679B2 (en) 2009-12-23 2013-07-23 Sms Siemag Aktiengesellschaft Control of the converter process by means of exhaust gas signals
CN115341069A (en) * 2021-05-14 2022-11-15 宝山钢铁股份有限公司 Molten steel carbon content prediction control method of converter blowing end point based on online dynamic detection model

Also Published As

Publication number Publication date
DE2836694A1 (en) 1979-03-08
GB2003929B (en) 1982-05-26
BR7805395A (en) 1979-05-02
DE2836694C2 (en) 1985-05-15
FR2401226A1 (en) 1979-03-23
FR2401226B1 (en) 1980-07-18
CA1118212A (en) 1982-02-16
AU507553B1 (en) 1980-02-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee