FR2273874A1 - Oxygen refining of pig iron in converters - using calculations and formulas for precise process control - Google Patents

Oxygen refining of pig iron in converters - using calculations and formulas for precise process control

Info

Publication number
FR2273874A1
FR2273874A1 FR7518164A FR7518164A FR2273874A1 FR 2273874 A1 FR2273874 A1 FR 2273874A1 FR 7518164 A FR7518164 A FR 7518164A FR 7518164 A FR7518164 A FR 7518164A FR 2273874 A1 FR2273874 A1 FR 2273874A1
Authority
FR
France
Prior art keywords
converter
oxygen
calculations
flow
converters
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
FR7518164A
Other languages
French (fr)
Other versions
FR2273874B3 (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
Publication of FR2273874A1 publication Critical patent/FR2273874A1/en
Priority to SE7606139A priority Critical patent/SE421560B/en
Application granted granted Critical
Publication of FR2273874B3 publication Critical patent/FR2273874B3/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

Oxygen is blown in via the centre of a concentric tuyere, located below the surface of the molten metal, the outer annulus of the tuyers carrying propane. Process comprises (a) continuously measuring the flow of oxygen and propane; (b) continuously analysing the gas leaving the converter for CO, CO2, O2, H2 and H2O; (c) making continuous calculations of gas-flow out of converter, decarburisation speed of the iron, wt. of carbon consumed, wt. of O2 passing into the slag, and bath content of C, P and Si; (d) comparing the calculated values with pre-determined standards, chosen so that the correct steel compsn. and temp. is obtd. when the converter is tipped; and (e) rapidly altering the refining conditions (flow of O2, addns.) to eliminate any deviation between calcd. and standard values.
FR7518164A 1974-06-05 1975-06-05 Oxygen refining of pig iron in converters - using calculations and formulas for precise process control Granted FR2273874A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE7606139A SE421560B (en) 1975-06-05 1976-06-01 BURNER VALVE WITH PRESSURE REDUCING BODY FOR GAS CIGAR RETURNERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE815962 1974-06-05

Publications (2)

Publication Number Publication Date
FR2273874A1 true FR2273874A1 (en) 1976-01-02
FR2273874B3 FR2273874B3 (en) 1978-02-03

Family

ID=3861028

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518164A Granted FR2273874A1 (en) 1974-06-05 1975-06-05 Oxygen refining of pig iron in converters - using calculations and formulas for precise process control

Country Status (2)

Country Link
FR (1) FR2273874A1 (en)
LU (1) LU72649A1 (en)

Also Published As

Publication number Publication date
LU72649A1 (en) 1975-09-29
FR2273874B3 (en) 1978-02-03

Similar Documents

Publication Publication Date Title
GB1097455A (en) Method of monitoring and regulating the oxygen blowing process
GB1423753A (en) Steel production method
GB1448292A (en) Electric arc furnace and a method of treating molten metal in such a furnace
CS274278B2 (en) Method of molten steel refining
FR2273874A1 (en) Oxygen refining of pig iron in converters - using calculations and formulas for precise process control
GB1418488A (en) Method and apparatus for the refining of steel
US2502284A (en) Decarburization of steel
US3832160A (en) Decarburizing molten steel
JPS56102509A (en) Refining of metal bath
US4436553A (en) Process to produce low hydrogen steel
US3219440A (en) Method of metal purification
JPS5757819A (en) Converter steel making method
SU988879A1 (en) Method for oxygen blasting of metal
GB1364255A (en) Process for manufacturing steel
JPS6123844B2 (en)
GB1412923A (en) Pig iron refining control
GB1370658A (en) Control of pneumatic steelmaking process
SU1130613A1 (en) Method for controlling metal decarbonization rate in steel smelting plant
JPS55107715A (en) Blowing method of dephosphorizer to bottom blowing converter
FR2278771A1 (en) Converters for oxygen refining of steel - possessing improved shape for better refining and longer lining life
GB752555A (en) Temperature controlling method in the hearth of blast furnace
NL7509791A (en) Controlling steel prodn. in oxygen or converter process - on the basis of the gas compsn. in the off-gas line
Savard et al. Bottom Blowing With Oxygen
GB609850A (en) Improvements in and relating to the desulphurization of pig iron
GB768168A (en) Improvements in the production of steel from crude iron containing phosphorus