GB1087053A - Process for measuring the value of carbon content of a steel bath in an oxygen top-blowing converter - Google Patents

Process for measuring the value of carbon content of a steel bath in an oxygen top-blowing converter

Info

Publication number
GB1087053A
GB1087053A GB39206/64A GB3920664A GB1087053A GB 1087053 A GB1087053 A GB 1087053A GB 39206/64 A GB39206/64 A GB 39206/64A GB 3920664 A GB3920664 A GB 3920664A GB 1087053 A GB1087053 A GB 1087053A
Authority
GB
United Kingdom
Prior art keywords
carbon content
steel
decarburization
decarburizing
calculated
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
GB39206/64A
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.)
Yawata Iron and Steel Co Ltd
Yokoyama Engineering Co Ltd
Original Assignee
Yawata Iron and Steel Co Ltd
Yokoyama Engineering Co 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
Application filed by Yawata Iron and Steel Co Ltd, Yokoyama Engineering Co Ltd filed Critical Yawata Iron and Steel Co Ltd
Publication of GB1087053A publication Critical patent/GB1087053A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G01N33/2022—Non-metallic constituents
    • G01N33/2025—Gaseous constituents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/205—Metals in liquid state, e.g. molten metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

<PICT:1087053/C6-C7/1> In a process for tapping steel from an oxygen top-blowing converter at a predetermined carbon content involving the use of predetermined standard values of carbon content to compensate for errors in continual carbon content measurement, the flowrate of waste gas issuing from the converter in Nm3/hr [Fi], and the % volume of carbon monoxide [(CO)i] and carbon dioxide [(CO2)i] in the waste gas are continually measured, the decarburization velocity - dc/dt is calculated from the formula <FORM:1087053/C6-C7/1> , the decarburizing acceleration is obtained by differentiating - dc/dt , the times of peculiar change points in the decarburizing acceleration are noted, the carbon content of the steel at the time of said changes is calculated by double integration of the decarburizing acceleration, the correct amount of decarburization (D Ci) is calculated from the formula D Ci' = S Co-(C)% x weight of molten steel, where S Co is the total carbon content of the charged material iron and (C)% is the predetermined standard value of carbon content of the steel bath corresponding to the time the above-mentioned peculiar change is detected, the amount of decarburization as D Ci is calculated by integrating the decarburizing velocity, D Ci is amended by the said correct amount of decarburization D Ci' and the steel is tapped at the exact time the carbon content of the steel reaches the predetermined value.
GB39206/64A 1963-09-26 1964-09-25 Process for measuring the value of carbon content of a steel bath in an oxygen top-blowing converter Expired GB1087053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5139463 1963-09-26

Publications (1)

Publication Number Publication Date
GB1087053A true GB1087053A (en) 1967-10-11

Family

ID=12885705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39206/64A Expired GB1087053A (en) 1963-09-26 1964-09-25 Process for measuring the value of carbon content of a steel bath in an oxygen top-blowing converter

Country Status (5)

Country Link
US (1) US3329495A (en)
AT (1) AT278881B (en)
BE (1) BE653544A (en)
DE (1) DE1433701B2 (en)
GB (1) GB1087053A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402856A (en) * 1963-12-03 1965-06-18 Siderurgie Fse Inst Rech Method and device for monitoring oxidation reactions during refining of a metal bath
US3475599A (en) * 1965-03-30 1969-10-28 Leeds & Northrup Co Process measurement system for basic oxygen refining of steel
US3485619A (en) * 1965-10-04 1969-12-23 Beteiligungs & Patentverw Gmbh Method of automatic control and adjustment of oxygen blowing processes
US3619174A (en) * 1965-11-27 1971-11-09 Sumitomo Metal Ind Method for controlling the carbon content in and/or the temperature of the steel
US3520657A (en) * 1965-12-27 1970-07-14 Dravo Corp Method and apparatus for the analysis of off-gases in a refining process
US3528800A (en) * 1966-02-14 1970-09-15 Leeds & Northrup Co Optimized blowing control for basic oxygen furnaces
US3640119A (en) * 1966-02-14 1972-02-08 Leeds & Northrup Co Carbon content measurement in a basic oxygen furnace
US3450867A (en) * 1966-03-14 1969-06-17 Leeds & Northrup Co Estimated tap temperature calculator for basic oxygen furnace
LU50939A1 (en) * 1966-04-20 1966-10-20
US3432288A (en) * 1966-06-29 1969-03-11 Allegheny Ludlum Steel Process control of top-blown oxygen converter
US3510262A (en) * 1966-09-16 1970-05-05 United States Steel Corp Carbon analyzing system
US3489518A (en) * 1966-11-02 1970-01-13 Koppers Co Inc Carbon determination method and apparatus
US3720404A (en) * 1967-06-27 1973-03-13 Westinghouse Electric Corp System for controlling carbon removal in a basic oxygen furnace
US3540879A (en) * 1967-06-27 1970-11-17 Westinghouse Electric Corp Method for controlling phosphorus removal in a basic oxygen furnace
US3500029A (en) * 1967-08-17 1970-03-10 Leeds & Northrup Co Charge computer for basic oxygen furnace
US3534143A (en) * 1968-10-25 1970-10-13 Westinghouse Electric Corp Computer control of metal treatment furnace operation
US3653650A (en) * 1968-12-27 1972-04-04 Yawata Iron & Steel Co Method of controlling the exhaust gas flow volume in an oxygen top-blowing converter
US3607230A (en) * 1969-01-21 1971-09-21 Koppers Co Inc Process for controlling the carbon content of a molten metal bath
US3816720A (en) * 1971-11-01 1974-06-11 Union Carbide Corp Process for the decarburization of molten metal
US3773497A (en) * 1972-03-02 1973-11-20 Steel Corp Steelmaking
US3779744A (en) * 1972-04-05 1973-12-18 Westinghouse Electric Corp Modification and improvement to dynamic bof control
US4073619A (en) * 1974-10-28 1978-02-14 British Steel Corporation Sampling gas for analysis
SU813216A1 (en) * 1977-06-13 1981-03-15 Ордена Ленина Институт Кибернетикиан Украинской Ccp Device for measuring carbon concentration in liquid metal
SU752162A1 (en) * 1977-06-13 1980-07-30 Ордена Ленина Институт Кибернетики Ан Украинской Сср Device for monitoring the concentration of carbon in molten metal
SE428400B (en) * 1977-06-28 1983-06-27 Inst Kib Akademii Nauk Uk Ssr SET FROM PSENSE EFFECTS SEPARATE SEPARATE THERMAL PHASE CONVERSION EFFECTS ON COOLING OF A METAL OR METAL ALLOY, AND DEVICE FOR IMPLEMENTATION OF THE SET
JPS5442323A (en) * 1977-09-10 1979-04-04 Nisshin Steel Co Ltd Control procedure of steel making process using mass spectormeter
CN113009103A (en) * 2019-12-19 2021-06-22 上海梅山钢铁股份有限公司 On-line calculation method for carbon content of converter mouth
CN113106188B (en) * 2021-04-09 2022-07-01 福建三宝钢铁有限公司 Preparation method of HRB500E niobium-containing titanium alloy deformed steel bar

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2595792A (en) * 1950-05-26 1952-05-06 Jordan James Fernando Method of observing and controlling the process of a continuous bessemer process
US3218842A (en) * 1963-04-30 1965-11-23 United States Steel Corp Apparatus for analyzing cement kiln exit gases

Also Published As

Publication number Publication date
US3329495A (en) 1967-07-04
DE1433701A1 (en) 1968-11-28
BE653544A (en) 1965-01-18
DE1433701B2 (en) 1971-02-25
AT278881B (en) 1970-02-10

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