FR2219975A1 - Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns - Google Patents

Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns

Info

Publication number
FR2219975A1
FR2219975A1 FR7407875A FR7407875A FR2219975A1 FR 2219975 A1 FR2219975 A1 FR 2219975A1 FR 7407875 A FR7407875 A FR 7407875A FR 7407875 A FR7407875 A FR 7407875A FR 2219975 A1 FR2219975 A1 FR 2219975A1
Authority
FR
France
Prior art keywords
converter
oxygen
gases
addns
refining
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
FR7407875A
Other languages
French (fr)
Other versions
FR2219975B1 (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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Priority to FR7407875A priority Critical patent/FR2219975A1/en
Publication of FR2219975A1 publication Critical patent/FR2219975A1/en
Application granted granted Critical
Publication of FR2219975B1 publication Critical patent/FR2219975B1/fr
Granted 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)

Abstract

This is performed by measuring or determining, pref. continuously, (a) the quantity of oxygen blown into the converter, (b) the rate of exit (DCO2) of CO2, (c) the concentration COc of CO in the gases as they leave the converter (d) the rate of decarbidation of the metal bath, analysing for (CO, CO2 and O2) and measuring the flow of gases across the collector hood, (e) the values of the factor XF, called "the measure of CO in the converter", where XF = CO c/ CO c + CO2 c where CO2 2 means concentration of CO2 in the gases as they leave the converter; and with the aid of the measurements (b), (c), (d), and (e), determining (f) the quantity of oxygen which combines the C of the metal bath, the quantity of oxygen which combines with the slag and the state of combustion of CO into CO2 in the converter; and as a result adjusting the quantities of : added materials, lance height, oxygen flows, in order rapidly to eliminate any deviation from predetermined values with respect to the desired steel quality and process productivity.
FR7407875A 1973-03-01 1974-03-01 Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns Granted FR2219975A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7407875A FR2219975A1 (en) 1973-03-01 1974-03-01 Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE796170 1973-03-01
FR7407875A FR2219975A1 (en) 1973-03-01 1974-03-01 Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns

Publications (2)

Publication Number Publication Date
FR2219975A1 true FR2219975A1 (en) 1974-09-27
FR2219975B1 FR2219975B1 (en) 1978-03-24

Family

ID=25657108

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407875A Granted FR2219975A1 (en) 1973-03-01 1974-03-01 Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns

Country Status (1)

Country Link
FR (1) FR2219975A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1375179A (en) * 1962-10-04 1964-10-16 Huettenwerk Oberhausen Ag Method and device for measuring the co content of combustion gases in the wind refining of steel, in particular for monitoring the progress of decarburization
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
FR1594450A (en) * 1967-12-11 1970-06-01
FR1594663A (en) * 1967-10-17 1970-06-08

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1375179A (en) * 1962-10-04 1964-10-16 Huettenwerk Oberhausen Ag Method and device for measuring the co content of combustion gases in the wind refining of steel, in particular for monitoring the progress of decarburization
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
FR1594663A (en) * 1967-10-17 1970-06-08
FR1594450A (en) * 1967-12-11 1970-06-01

Also Published As

Publication number Publication date
FR2219975B1 (en) 1978-03-24

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Legal Events

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