JPS55113825A - Preventing method for run-off of molten slag during tapping of converter - Google Patents

Preventing method for run-off of molten slag during tapping of converter

Info

Publication number
JPS55113825A
JPS55113825A JP2076979A JP2076979A JPS55113825A JP S55113825 A JPS55113825 A JP S55113825A JP 2076979 A JP2076979 A JP 2076979A JP 2076979 A JP2076979 A JP 2076979A JP S55113825 A JPS55113825 A JP S55113825A
Authority
JP
Japan
Prior art keywords
molten slag
converter
run
tapping
tapping hole
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
JP2076979A
Other languages
Japanese (ja)
Inventor
Katsumi Kakiuchi
Motoo Tsuboi
Masami Kuroe
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.)
Shinagawa Refractories Co Ltd
Original Assignee
Shinagawa Refractories Co 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 Shinagawa Refractories Co Ltd filed Critical Shinagawa Refractories Co Ltd
Priority to JP2076979A priority Critical patent/JPS55113825A/en
Publication of JPS55113825A publication Critical patent/JPS55113825A/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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof

Landscapes

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

Abstract

PURPOSE:To prevent the run-off of molten slag to a ladle so as to improve the steel quality, by inserting a partition wall, which is formed by filling a cylindrical shell with refractory material and which has a specific density larger than that of the molten slag, into a converter on the surface of the tapping hole before completion of molten steel run-off to form a partition wall around the tapping hole. CONSTITUTION:In tapping of a converter which contains molten steel 2 and molten slag 3, a partition wall 5, which is made by incorporation of cylindrical iron shell or iron vessel 7 and solid refractory material 6 packed in the vessel 7 to form the partition wall 5 having specific gravity larger than that of the molten slag, is inserted sidewards through the top 1 into the converter as it is inclined before the completion of tapping. The partiton wall 5 is positioned around the tapping hole 4 to form the partiton wall 5 which surrounds the tapping hole 4. Hereby the run- off of the molten slag 3 to the ladle is inhibited. When the partiton wall 5 is cylindrical, its preferable inside diameter, outside diameter, and height are (1.2-5)d, (3-10)d, (3-8)d respectively, where d is the diameter of the tapping hole.
JP2076979A 1979-02-26 1979-02-26 Preventing method for run-off of molten slag during tapping of converter Pending JPS55113825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2076979A JPS55113825A (en) 1979-02-26 1979-02-26 Preventing method for run-off of molten slag during tapping of converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2076979A JPS55113825A (en) 1979-02-26 1979-02-26 Preventing method for run-off of molten slag during tapping of converter

Publications (1)

Publication Number Publication Date
JPS55113825A true JPS55113825A (en) 1980-09-02

Family

ID=12036369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2076979A Pending JPS55113825A (en) 1979-02-26 1979-02-26 Preventing method for run-off of molten slag during tapping of converter

Country Status (1)

Country Link
JP (1) JPS55113825A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484808A (en) * 1977-12-19 1979-07-06 Nippon Steel Corp Prevention of outflow of slag upon outgoing of steel from steel making furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484808A (en) * 1977-12-19 1979-07-06 Nippon Steel Corp Prevention of outflow of slag upon outgoing of steel from steel making furnace

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