SE8702338D0 - GAS RINSE OF MELT IN PINK - Google Patents

GAS RINSE OF MELT IN PINK

Info

Publication number
SE8702338D0
SE8702338D0 SE8702338A SE8702338A SE8702338D0 SE 8702338 D0 SE8702338 D0 SE 8702338D0 SE 8702338 A SE8702338 A SE 8702338A SE 8702338 A SE8702338 A SE 8702338A SE 8702338 D0 SE8702338 D0 SE 8702338D0
Authority
SE
Sweden
Prior art keywords
nozzle
melt
gas
pressure
gas pressure
Prior art date
Application number
SE8702338A
Other languages
Swedish (sv)
Other versions
SE8702338L (en
Inventor
H Gripenberg
M Brunner
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Priority to SE8702338A priority Critical patent/SE8702338L/en
Publication of SE8702338D0 publication Critical patent/SE8702338D0/en
Priority to PCT/SE1988/000356 priority patent/WO1990000242A1/en
Priority to EP88906850A priority patent/EP0421990A1/en
Publication of SE8702338L publication Critical patent/SE8702338L/en
Priority to FI906412A priority patent/FI906412A0/en
Priority to NO1990905600A priority patent/NO905600D0/en
Priority to DK307190A priority patent/DK307190D0/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The disclosure relates to a method for scavenging of gas through a melt in a ladle by a nozzle disposed in the bottom of the ladle. By varying the gas pressure, the nozzle is caused to assume one open and one substantially closed position. At a low gas pressure, the nozzle allows the passage of a gas flow which is sufficient to keep the nozzle free of the melt but is insufficient to influence the melt proper. At a high gas pressure, the nozzle allows the passage of a gas flow of such magnitude that agitation and refining of the melt take place. The nozzle is, in this instance, of a cross-sectional area of the order of magnitude of between 0.2 and 15 mm<2>. The differential pressure at substantially closed nozzle, i.e. the difference between the gas pressure in the nozzle and the ferrostatic pressure from the melt, is greater than 0.05 bar, and the differential pressure at open nozzle lies in the range of between 5 and 250 bar.
SE8702338A 1987-06-05 1987-06-05 GAS RINSE OF MELMA IN SHAENK SE8702338L (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE8702338A SE8702338L (en) 1987-06-05 1987-06-05 GAS RINSE OF MELMA IN SHAENK
PCT/SE1988/000356 WO1990000242A1 (en) 1987-06-05 1988-06-28 Scavenging of gas through a melt in a ladle
EP88906850A EP0421990A1 (en) 1987-06-05 1988-06-28 Scavenging of gas through a melt in a ladle
FI906412A FI906412A0 (en) 1987-06-05 1990-12-27 RENGOERING AV GAS GENOM SMAELTA I ETT KAERL.
NO1990905600A NO905600D0 (en) 1987-06-05 1990-12-27 PROCEDURE FOR RINSE GAS THROUGH A MELT.
DK307190A DK307190D0 (en) 1987-06-05 1990-12-28 RINSE OF GAS THROUGH A MELT IN A BASEBAG

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702338A SE8702338L (en) 1987-06-05 1987-06-05 GAS RINSE OF MELMA IN SHAENK
PCT/SE1988/000356 WO1990000242A1 (en) 1987-06-05 1988-06-28 Scavenging of gas through a melt in a ladle

Publications (2)

Publication Number Publication Date
SE8702338D0 true SE8702338D0 (en) 1987-06-05
SE8702338L SE8702338L (en) 1988-12-06

Family

ID=26659836

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8702338A SE8702338L (en) 1987-06-05 1987-06-05 GAS RINSE OF MELMA IN SHAENK

Country Status (6)

Country Link
EP (1) EP0421990A1 (en)
DK (1) DK307190D0 (en)
FI (1) FI906412A0 (en)
NO (1) NO905600D0 (en)
SE (1) SE8702338L (en)
WO (1) WO1990000242A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895785A (en) * 1972-08-01 1975-07-22 United States Steel Corp Method and apparatus for controlling the operation of a steel refining converter
FR2473064A1 (en) * 1980-01-02 1981-07-10 Siderurgie Fse Inst Rech PROCESS FOR PNEUMATIC BREWING OF A FUSION METAL BATH
JPS5757817A (en) * 1980-09-19 1982-04-07 Kawasaki Steel Corp Method for controlling bottom blowing gas in steel making by composite top and bottom blown converter
JPS57143421A (en) * 1981-02-27 1982-09-04 Nippon Steel Corp Switching method for bottom blowing gas
FR2501722B1 (en) * 1981-03-11 1986-08-14 Siderurgie Fse Inst Rech PROCESS FOR THE PNEUMATIC BREWING OF A METAL BATH

Also Published As

Publication number Publication date
EP0421990A1 (en) 1991-04-17
FI906412A0 (en) 1990-12-27
WO1990000242A1 (en) 1990-01-11
DK307190A (en) 1990-12-28
SE8702338L (en) 1988-12-06
NO905600L (en) 1990-12-27
DK307190D0 (en) 1990-12-28
NO905600D0 (en) 1990-12-27

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