JPS5729514A - Top-blown oxygen steelmaking method - Google Patents

Top-blown oxygen steelmaking method

Info

Publication number
JPS5729514A
JPS5729514A JP10382680A JP10382680A JPS5729514A JP S5729514 A JPS5729514 A JP S5729514A JP 10382680 A JP10382680 A JP 10382680A JP 10382680 A JP10382680 A JP 10382680A JP S5729514 A JPS5729514 A JP S5729514A
Authority
JP
Japan
Prior art keywords
lance
locus
refining
refining process
blowing
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
JP10382680A
Other languages
Japanese (ja)
Inventor
Moriyuki Ishiguro
Koji Toyoda
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 JP10382680A priority Critical patent/JPS5729514A/en
Publication of JPS5729514A publication Critical patent/JPS5729514A/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

Landscapes

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

Abstract

PURPOSE:To contrive to enhance the yield of iron and that of Mn by a method wherein a lance for top-blowing a refining gas is continuously moved along a locus other than a circle during a refining process. CONSTITUTION:In a steelmaking furnace, the lance for top-blowing a refining gas is moved along a locus other than a circle during the refining process. For example, the locus of the movement may be a triangle, a square, a rectangular, an ellipse, a star, a chrysanthemum shape, a saw-tooth shape, a vortex or the like. The lance is continuously moved in a two-dimensional or three-dimensional manner so as to form a locus which consist of one of the above-mentioned figures or a combination thereof. In this case, the moving speed of the lance may be either fixed or varied, according to particular requirements. By this method, the slag forming properties during the refining process and the dephosphorizing ratio can be enhanced and the degree of oxidization of the slag can be reduced. In addition, the yield of iron at the time of finishing the refining and that of Mn added in the form of a ferroalloy are enhanced.
JP10382680A 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method Pending JPS5729514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10382680A JPS5729514A (en) 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10382680A JPS5729514A (en) 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method

Publications (1)

Publication Number Publication Date
JPS5729514A true JPS5729514A (en) 1982-02-17

Family

ID=14364211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10382680A Pending JPS5729514A (en) 1980-07-29 1980-07-29 Top-blown oxygen steelmaking method

Country Status (1)

Country Link
JP (1) JPS5729514A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04289673A (en) * 1990-08-29 1992-10-14 Mitsubishi Electric Corp Inside modified fusible carbonate type fuel battery system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118317A (en) * 1978-03-07 1979-09-13 Nippon Kokan Kk <Nkk> Preparation of low carbon steel
JPS54149312A (en) * 1978-05-16 1979-11-22 Kawasaki Steel Co Converter slag making control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118317A (en) * 1978-03-07 1979-09-13 Nippon Kokan Kk <Nkk> Preparation of low carbon steel
JPS54149312A (en) * 1978-05-16 1979-11-22 Kawasaki Steel Co Converter slag making control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04289673A (en) * 1990-08-29 1992-10-14 Mitsubishi Electric Corp Inside modified fusible carbonate type fuel battery system

Similar Documents

Publication Publication Date Title
CA2166097A1 (en) Process for producing steel by converter
JPS5729514A (en) Top-blown oxygen steelmaking method
ATE107706T1 (en) METHOD OF MAKING MOLTEN STAINLESS STEEL.
JPS55128521A (en) Converter operating method
ES268630U (en) Nozzle for oxygen-injection lances used in the decarburisation of pig iron, in particular chromium pig iron.
JPS5729515A (en) Top-blown oxygen steelmaking method
JPS5591914A (en) Manufacture of manganese steel
JPS5565313A (en) Steel manufacture with top blown oxygen
JPS5254608A (en) Process for the operation of convertor
JPS56133413A (en) Steel making method by divided refining
GB1343364A (en) Process for accelerating metallurgical reactions and apparatus for performing the process
JPS5252108A (en) Pocess for efining by converter
JPS5773107A (en) Method foe improving dephosphorization efficiency of molten iron
JPS57158316A (en) Production of al-containing steel
SU827560A1 (en) Method of steel production
JPS5620114A (en) Desulfurization accelerating method in oxygen top blowing converter steel making method
JPS5747807A (en) Simultaneous dephosphorization and desulfurization method for molten iron
JPS5591926A (en) Preparation of extremely low carbon nitrogen stainless steel
JPS55107715A (en) Blowing method of dephosphorizer to bottom blowing converter
JPS648212A (en) Method for desiliconizing molten iron
JPS5594422A (en) Oxygen steel making method of molten iron having beforehand undergone dephosphorization and desulfurization
JPS5591910A (en) Feeding method of sub-raw material in decarburization of molten cast iron
Meyer et al. Vacuum Refining of High-Chromium Melts in the Converter Using the VDOK Process
Nilles Recent Developments in Pneumatic Steelmaking
JPS54130424A (en) Hot iron desulfurizing method