JPS5792120A - Steel making method by converter - Google Patents

Steel making method by converter

Info

Publication number
JPS5792120A
JPS5792120A JP16671680A JP16671680A JPS5792120A JP S5792120 A JPS5792120 A JP S5792120A JP 16671680 A JP16671680 A JP 16671680A JP 16671680 A JP16671680 A JP 16671680A JP S5792120 A JPS5792120 A JP S5792120A
Authority
JP
Japan
Prior art keywords
molten iron
converter
nozzles
blown
fire point
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
JP16671680A
Other languages
Japanese (ja)
Inventor
Hiromi Nakamura
Shinji Kuriyama
Kenzo Yamada
Hidehiko Ogura
Genji Nakatani
Ryuichi Nakajima
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 JP16671680A priority Critical patent/JPS5792120A/en
Publication of JPS5792120A publication Critical patent/JPS5792120A/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
    • C21C5/35—Blowing from above and through the bath

Landscapes

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

Abstract

PURPOSE:To suppress the generation of Fe fume dust and improve the yield of tapping by blowing a small amt. of a gas from the bottom of a converter to stir the molten iron in the converter forcibly thereby lowering fire point temp. at the oxygen top blowing refining of the molten iron after prerefining. CONSTITUTION:The bottom part 1a of a converter body 1 is mounted with 2-6 pieces of nozzles 3 at equal intervals, and from these nozzles, for example, gaseous Ar is blown into the molten iron 4 after prerefining removed of Si, P, S, etc. contained in the furnace body 1 whereby the molten iron 4 is stirred forcibly. As a result, the molten iron 4 of the fire point produced by the oxygen blown through a lance 2 is stirred and moved at all times, whereby the local temp. rise of said fire point is prevented and the generation of Fe fume dust is suppressed. The amt. of the gas to be blown through the nozzles 3 into the molten iron 4 preferably 0.005-0.2Nm<3>/t. sec.
JP16671680A 1980-11-28 1980-11-28 Steel making method by converter Pending JPS5792120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16671680A JPS5792120A (en) 1980-11-28 1980-11-28 Steel making method by converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16671680A JPS5792120A (en) 1980-11-28 1980-11-28 Steel making method by converter

Publications (1)

Publication Number Publication Date
JPS5792120A true JPS5792120A (en) 1982-06-08

Family

ID=15836427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16671680A Pending JPS5792120A (en) 1980-11-28 1980-11-28 Steel making method by converter

Country Status (1)

Country Link
JP (1) JPS5792120A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5591909A (en) * 1978-12-30 1980-07-11 Nippon Steel Corp Decarburizing method for molten cast iron
JPS5591910A (en) * 1978-12-30 1980-07-11 Nippon Steel Corp Feeding method of sub-raw material in decarburization of molten cast iron
JPS5591908A (en) * 1978-12-30 1980-07-11 Nippon Steel Corp Decarburizing method for molten cast iron
JPS5594424A (en) * 1979-01-13 1980-07-17 Nippon Steel Corp Decarbonization refining method of desphosphorized and desulfurized iron

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5591909A (en) * 1978-12-30 1980-07-11 Nippon Steel Corp Decarburizing method for molten cast iron
JPS5591910A (en) * 1978-12-30 1980-07-11 Nippon Steel Corp Feeding method of sub-raw material in decarburization of molten cast iron
JPS5591908A (en) * 1978-12-30 1980-07-11 Nippon Steel Corp Decarburizing method for molten cast iron
JPS5594424A (en) * 1979-01-13 1980-07-17 Nippon Steel Corp Decarbonization refining method of desphosphorized and desulfurized iron

Similar Documents

Publication Publication Date Title
JPS5687617A (en) Steel making method using arc furnace
JPS5623215A (en) Converter steel making method
US4373949A (en) Method for increasing vessel lining life for basic oxygen furnaces
JPS55158213A (en) Pefining method of chromium containing steel
AU569412B2 (en) Conversion of low-manganese molten iron to low-phosphorus molten steel
JPS5792120A (en) Steel making method by converter
ES8402355A1 (en) Process for producing steel in a converter from pig iron and ferrous scrap.
CA1042215A (en) Method for refining pig iron into steel
TW346505B (en) Process for producing low-carbon chromium-containing steel
EP0015396A1 (en) A method for increasing vessel lining life for basic oxygen furnaces
JPS5760004A (en) Converter refining method
JPS5798617A (en) Dephosphorizing method for molten pig iron
JPS54149313A (en) Elevated temperature refining method for molten steel
JPS5518578A (en) Treating method for flux of molten steel
JPS5792115A (en) Dephosphorization method for molten iron
JPS5739113A (en) Steel-making process by converter
GB738510A (en) Process for removing magnesium from aluminium
JPS5798618A (en) Decarbulizing refining method for molten pig iron that enlarges reserve heat
JPS5594425A (en) Converter steel making method which reduces phosphorus content
JPS5576013A (en) Al adding method to molten steel
JPS5623213A (en) Melting method of low phosphorus steel in oxygen top blowing steel making method
JPS5620112A (en) Production of low hydrogen steel
JPS57155311A (en) Steel making method
JPS5723016A (en) Arc furnace steel making method
JPS552759A (en) Manufacture of ultra-low-carbon stainless steel