JPS5785918A - Protection method for gas blowing tuyere for refining and tuyere - Google Patents

Protection method for gas blowing tuyere for refining and tuyere

Info

Publication number
JPS5785918A
JPS5785918A JP15957480A JP15957480A JPS5785918A JP S5785918 A JPS5785918 A JP S5785918A JP 15957480 A JP15957480 A JP 15957480A JP 15957480 A JP15957480 A JP 15957480A JP S5785918 A JPS5785918 A JP S5785918A
Authority
JP
Japan
Prior art keywords
tuyere
pipe
protecting
outermost
gas
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
JP15957480A
Other languages
Japanese (ja)
Other versions
JPS6051528B2 (en
Inventor
Kazuo Ogahira
Masazumi Hirai
Arata Tanaka
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 JP15957480A priority Critical patent/JPS6051528B2/en
Publication of JPS5785918A publication Critical patent/JPS5785918A/en
Publication of JPS6051528B2 publication Critical patent/JPS6051528B2/en
Expired 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
    • C21C5/48—Bottoms or tuyéres of converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To perform effective cooling and protecting by flowing a CO2-contg. gas at above a specific amt. per minute in a gas flow line formed of the outermost pipe of the tuyere of multiple construction and an inside pipe adjacent to the outermost pipe thereby cooling the tuyere. CONSTITUTION:A protecting gas consisting essentially of CO2 is passed through a conduit 3 into a gas flow passage formed of the outermost pipe 2 of the tuyere of the multiple construction provided below the molten metal level of a metal refining device and an inside pipe 1 adjacent to said pipe 2. The flow rate (N1/ min) of CO2 in the protecting gas consisting essentially of CO2 is determined in proportion to the inside circumferential length (piDi) of the outermost pipe and its wall thickness (T). More specifically, it is set at above 400XpiDi(cm)XT(cm). The outside circumference of the pipe 2 is enclosed densely with refractories 7 of a heat transfer rate smaller than that of the refractories around the tuyere.
JP15957480A 1980-11-14 1980-11-14 How to protect refining gas injection tuyeres Expired JPS6051528B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15957480A JPS6051528B2 (en) 1980-11-14 1980-11-14 How to protect refining gas injection tuyeres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15957480A JPS6051528B2 (en) 1980-11-14 1980-11-14 How to protect refining gas injection tuyeres

Publications (2)

Publication Number Publication Date
JPS5785918A true JPS5785918A (en) 1982-05-28
JPS6051528B2 JPS6051528B2 (en) 1985-11-14

Family

ID=15696681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15957480A Expired JPS6051528B2 (en) 1980-11-14 1980-11-14 How to protect refining gas injection tuyeres

Country Status (1)

Country Link
JP (1) JPS6051528B2 (en)

Also Published As

Publication number Publication date
JPS6051528B2 (en) 1985-11-14

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