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JPS5669320A - Continuous preliminary processing of molten iron and gas producing method - Google Patents

Continuous preliminary processing of molten iron and gas producing method

Info

Publication number
JPS5669320A
JPS5669320A JP14546079A JP14546079A JPS5669320A JP S5669320 A JPS5669320 A JP S5669320A JP 14546079 A JP14546079 A JP 14546079A JP 14546079 A JP14546079 A JP 14546079A JP S5669320 A JPS5669320 A JP S5669320A
Authority
JP
Japan
Prior art keywords
lance
molten iron
added
oxygen
powder
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
JP14546079A
Other languages
Japanese (ja)
Other versions
JPS5761804B2 (en
Inventor
Ryuichi Nakagawa
Shiro Yoshimatsu
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.)
National Research Institute for Metals
Original Assignee
National Research Institute for Metals
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 National Research Institute for Metals filed Critical National Research Institute for Metals
Priority to JP14546079A priority Critical patent/JPS5669320A/en
Publication of JPS5669320A publication Critical patent/JPS5669320A/en
Publication of JPS5761804B2 publication Critical patent/JPS5761804B2/ja
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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:To reduce a fuel ratio in the blast furnace and to produce by-produced gas having high freedom, by adding the powder of solid hydrocarbon and oxygen or the like, and simultaneously carrying out the steel making reaction and gasfication of hydrocarbon in the manufacturing process of steel. CONSTITUTION:Molten iron 1 is continuously fed to a reaction furnace 3 from a flowing trough 17. From a water cooling lance 4 oxygen blowing is done to desiliconize and the powder of iron oxide is added from the lance. Then, from the lance 2 coal powder is injected and added into the molten iron by using transporting gas to decarbonize. From the lance 7 more than a stoichismetrically equivalent amt. of oxygen is blown and if requird, steel chips are added from a feed port 10 of a cooling agent, and steam is blown from the lance 11. The produced slag is transferred to dephosphorization and desulfurization process through an intermediate skimmer 8 and an intermediate skim discharger 9 and oxygen and slag making agent are added from the lance 12 and the feed port 13. The produced gas is taken out through a fuel 15 from an upper part of a slag discharge port 14 and the molten iron which has finished the reaction is taken out from a tapping port 16.
JP14546079A 1979-11-12 1979-11-12 Continuous preliminary processing of molten iron and gas producing method Granted JPS5669320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14546079A JPS5669320A (en) 1979-11-12 1979-11-12 Continuous preliminary processing of molten iron and gas producing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14546079A JPS5669320A (en) 1979-11-12 1979-11-12 Continuous preliminary processing of molten iron and gas producing method

Publications (2)

Publication Number Publication Date
JPS5669320A true JPS5669320A (en) 1981-06-10
JPS5761804B2 JPS5761804B2 (en) 1982-12-27

Family

ID=15385737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14546079A Granted JPS5669320A (en) 1979-11-12 1979-11-12 Continuous preliminary processing of molten iron and gas producing method

Country Status (1)

Country Link
JP (1) JPS5669320A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162717A (en) * 1984-02-04 1985-08-24 Nippon Kokan Kk <Nkk> Treatment of molten iron

Also Published As

Publication number Publication date
JPS5761804B2 (en) 1982-12-27

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