JPS5586678A - Steel making method and float for steel making - Google Patents

Steel making method and float for steel making

Info

Publication number
JPS5586678A
JPS5586678A JP16223378A JP16223378A JPS5586678A JP S5586678 A JPS5586678 A JP S5586678A JP 16223378 A JP16223378 A JP 16223378A JP 16223378 A JP16223378 A JP 16223378A JP S5586678 A JPS5586678 A JP S5586678A
Authority
JP
Japan
Prior art keywords
molten steel
slag
nozzle
float
ladle
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
JP16223378A
Other languages
Japanese (ja)
Inventor
Akira Yoshida
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.)
KUSAKA REAMETARU KENKYUSHO KK
Original Assignee
KUSAKA REAMETARU KENKYUSHO KK
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 KUSAKA REAMETARU KENKYUSHO KK filed Critical KUSAKA REAMETARU KENKYUSHO KK
Priority to JP16223378A priority Critical patent/JPS5586678A/en
Publication of JPS5586678A publication Critical patent/JPS5586678A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • B22D43/002—Retaining slag during pouring molten metal by using floating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

PURPOSE:To prevent entry and outflow of slag in the terminal period of tapping from the nozzle and increase the quality of steel ingot and yield, by floating a refractory float on the nozzle upper boundary level of molten steel and slag in the ladle or the like of sliding nozzle system. CONSTITUTION:Molten steel 5 is tapped from a steel making furnace into a ladle 3 equipped with a sliding nozzle 6. In order to prevent temperature drop and oxidation of the molten steel 5 in the ladle, slag 4 is spread over to depth of 100-200mm. At this time, a disc-shaped float 1 of neutral or basic refractory material of self- sintering property, such as chromite, zirconite, and spinnel, being formed and solidified by the water glass-CO2 method, is put in the upper part of the position of the nozzle 6. The float, of which specific gravity is 3.2-7.0, being in the middle between that of molten steel 5 and that of slag 4, will float on the boundary between the two. Also provided are stack for degassing 2 and cavity for passing molten steel 7. In the terminal period of outflow of molten steel from the nozzle 6, inclusion and outflow of slag 4 due to vortex flow of the molten steel 5 may be prevented, so that majority of molten steel 5 may be discharged without permitting the slag 4 to flow out.
JP16223378A 1978-12-23 1978-12-23 Steel making method and float for steel making Pending JPS5586678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16223378A JPS5586678A (en) 1978-12-23 1978-12-23 Steel making method and float for steel making

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16223378A JPS5586678A (en) 1978-12-23 1978-12-23 Steel making method and float for steel making

Publications (1)

Publication Number Publication Date
JPS5586678A true JPS5586678A (en) 1980-06-30

Family

ID=15750493

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16223378A Pending JPS5586678A (en) 1978-12-23 1978-12-23 Steel making method and float for steel making

Country Status (1)

Country Link
JP (1) JPS5586678A (en)

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