JPS5770215A - Controlling method for finish temperature of converter operation - Google Patents

Controlling method for finish temperature of converter operation

Info

Publication number
JPS5770215A
JPS5770215A JP14436480A JP14436480A JPS5770215A JP S5770215 A JPS5770215 A JP S5770215A JP 14436480 A JP14436480 A JP 14436480A JP 14436480 A JP14436480 A JP 14436480A JP S5770215 A JPS5770215 A JP S5770215A
Authority
JP
Japan
Prior art keywords
amount
finish temperature
converter operation
temperature rise
temperature
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.)
Pending
Application number
JP14436480A
Other languages
Japanese (ja)
Inventor
Osamu Terada
Teruyuki Hasegawa
Osamu Yamase
Toshio Edane
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP14436480A priority Critical patent/JPS5770215A/en
Publication of JPS5770215A publication Critical patent/JPS5770215A/en
Pending 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
    • C21C5/32—Blowing from above
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)

Abstract

PURPOSE:To improve the adequteness degree of the finish temperature of a converter operation and control the finish temperature at the optimum value by a method wherein a correction term determined by the mixing ratios of molten pig iron is added to a temperature rise model used for a dynamic control of the finish temperature of a converter operation for refining. CONSTITUTION:For the dynamic control of the finish temperature of the converter operation for refining, a temperature rise model is used which represents the temperature rise rate per unit amount of blown oxygen dT/dQ in terms of the factors as follows: dT/dQ=F([C]i, Bi, Fi, Ei, Oi, Ii, Ki,). where i is the heat number, [C] is the carbon content of the steel bath, Q is the amount (Nm<3>) of blown oxygen, B is the blowing pattern, F is the amount of flux charged, E is the contents of other components (Si, Mn, P, etc.), O is the amount of iron ores charged, I is the initial conditions and K is a model factor. To this basis temperature rise model is added the correction term which depends on the amount of undissolved scraps and is determined by the mixing ratios of the molten pig iron. Accordingly, it is made possible to control the finish temperature following up to the change in the mixing ratios of the molten pig iron.
JP14436480A 1980-10-17 1980-10-17 Controlling method for finish temperature of converter operation Pending JPS5770215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14436480A JPS5770215A (en) 1980-10-17 1980-10-17 Controlling method for finish temperature of converter operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14436480A JPS5770215A (en) 1980-10-17 1980-10-17 Controlling method for finish temperature of converter operation

Publications (1)

Publication Number Publication Date
JPS5770215A true JPS5770215A (en) 1982-04-30

Family

ID=15360382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14436480A Pending JPS5770215A (en) 1980-10-17 1980-10-17 Controlling method for finish temperature of converter operation

Country Status (1)

Country Link
JP (1) JPS5770215A (en)

Similar Documents

Publication Publication Date Title
GB1087079A (en) Improvements in or relating to metallurgical converter control systems and methods
JPS5687617A (en) Steel making method using arc furnace
ES8302787A1 (en) Process for refining high-chromium steels
US4113468A (en) Continuous smelting method
JPS5770215A (en) Controlling method for finish temperature of converter operation
CA1237583A (en) System and method for producing steel in a top-blown vessel
JPS62158810A (en) Method for determining main material charging quantity in converter operation
JPS56130420A (en) Refining method of molten iron and molten steel
JPS5521504A (en) Controlling method for decarburization of molten steel
FR2230732A1 (en) Controlling foaming of slag in steel refining - using values determined from off-gases
KR890013198A (en) Method for manufacturing low chromium-containing molten iron
JPS57140810A (en) Refining method for steel
JPS55152113A (en) Operating method of blast furnace
JPS5723016A (en) Arc furnace steel making method
JPS5743923A (en) Method for preventing rephosphorization
JPS6447805A (en) Production of silicon-containing cast iron
JPS55107715A (en) Blowing method of dephosphorizer to bottom blowing converter
JPS5732315A (en) Method for dephosphorization in basic oxygen converter steel making method
Pozhivanov Oxygen Injection of a Converter Bath With Cyclic Variation in Oxygen Consumption
JPS5591908A (en) Decarburizing method for molten cast iron
Didkovskii et al. The Oxidation of Low Carbon Steel in a Converter and the Possibilities of Controlling it by Changing the Blowing Parameters
JPS57145920A (en) Batch type continuous refining method of molten pig iron
JPS5445611A (en) Treating molten metal
GB1459956A (en) Method of controlling temperature in q-bop steel making process
Egger et al. Desiliconization and Dephosphorization of Molten Pig Iron During Desulfurization and Its Effect on the Material and Heat Balance of the LD Process