JPS57203728A - Immersion lance for refining of molten metal - Google Patents

Immersion lance for refining of molten metal

Info

Publication number
JPS57203728A
JPS57203728A JP8933481A JP8933481A JPS57203728A JP S57203728 A JPS57203728 A JP S57203728A JP 8933481 A JP8933481 A JP 8933481A JP 8933481 A JP8933481 A JP 8933481A JP S57203728 A JPS57203728 A JP S57203728A
Authority
JP
Japan
Prior art keywords
gas
pipe
lance
outlet
flow passage
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
JP8933481A
Other languages
Japanese (ja)
Other versions
JPS6159372B2 (en
Inventor
Katsuhiko Takeda
Masamichi Kojima
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP8933481A priority Critical patent/JPS57203728A/en
Publication of JPS57203728A publication Critical patent/JPS57203728A/en
Publication of JPS6159372B2 publication Critical patent/JPS6159372B2/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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/4613—Refractory coated lances; Immersion lances

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE:To improve a service life considerably by providing a flow passage for passing of a gas for refining and a flow passage for passing of liquid consisting of the same element as that of said gas by disposing the outlet of the latter around the outlet for the gas. CONSTITUTION:A pipe 1 forming a flow passage for an oxidative gas such as gaseous oxygen, air or the like or an inert gas such as Ar, N2 or the like and a pipe 2 forming a flow passage for the liquid of the same element are made into concentrical double-ply pipe construction with, for example, ribs 3 as spacers. The outlet 5 of the pipe 2 is disposed at the periphery of the outlet 4 of the pipe 1, and the sizes of the pipings, and their sectional areas are selected variously to meet the purpose of refining and the geometrical construction of the pipings. A lance of such construction is disposed to refractories 6 having studs 7, and are connected respectively to liquid and gas tanks via control valves 8, 9. The discharge surface 10 of the immersion lance and the neighborhood thereof are cooled efficiently by the gasification effect of the time when the liquid discharges from the lance and the erosion, damage, etc. of the lance are improved considerably.
JP8933481A 1981-06-10 1981-06-10 Immersion lance for refining of molten metal Granted JPS57203728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8933481A JPS57203728A (en) 1981-06-10 1981-06-10 Immersion lance for refining of molten metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8933481A JPS57203728A (en) 1981-06-10 1981-06-10 Immersion lance for refining of molten metal

Publications (2)

Publication Number Publication Date
JPS57203728A true JPS57203728A (en) 1982-12-14
JPS6159372B2 JPS6159372B2 (en) 1986-12-16

Family

ID=13967784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8933481A Granted JPS57203728A (en) 1981-06-10 1981-06-10 Immersion lance for refining of molten metal

Country Status (1)

Country Link
JP (1) JPS57203728A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59145723A (en) * 1983-02-09 1984-08-21 Nippon Kokan Kk <Nkk> Cooling method of lance for stirring molten metal
FR2645456A1 (en) * 1989-04-11 1990-10-12 Air Liquide PROCESS AND PLANT FOR TREATING A LIQUID WITH A GAS
JPH0379710A (en) * 1989-08-21 1991-04-04 Nippon Steel Corp Method and apparatus for treating desiliconization in molten iron

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59145723A (en) * 1983-02-09 1984-08-21 Nippon Kokan Kk <Nkk> Cooling method of lance for stirring molten metal
FR2645456A1 (en) * 1989-04-11 1990-10-12 Air Liquide PROCESS AND PLANT FOR TREATING A LIQUID WITH A GAS
JPH0379710A (en) * 1989-08-21 1991-04-04 Nippon Steel Corp Method and apparatus for treating desiliconization in molten iron

Also Published As

Publication number Publication date
JPS6159372B2 (en) 1986-12-16

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