Title:
LD製鋼用の改良型ランス
Document Type and Number:
Japanese Patent JP2009516070
Kind Code:
A
Abstract:
An improved lance for LD steelmaking comprises a plurality of peripheral supersonic nozzles provided with a single inlet high pressure gas supply line and a central nozzle. The central nozzle is a subsonic nozzle provided with a separate low pressure gas supply line (1 ) independent of the high pressure gas supply line (2) for the peripheral nozzles. The flow rate through the central subsonic nozzle is controllable for varying generation of liquid metal droplets during the blow, according to the process requirement.
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Inventors:
Samba shibam, rajamani
Lenka, Surya, Narayan
Durst, Franz
Chandra, Sanjay
Ajmani, Satish, Kumar
Lenka, Surya, Narayan
Durst, Franz
Chandra, Sanjay
Ajmani, Satish, Kumar
Application Number:
JP2008539618A
Publication Date:
April 16, 2009
Filing Date:
May 04, 2006
Export Citation:
Assignee:
Tarta Steel Limited
International Classes:
C21C5/46
Domestic Patent References:
| JPH06240329A | 1994-08-30 | |||
| JPS5848758U | 1983-04-01 | |||
| JPH08246017A | 1996-09-24 | |||
| JPH10287909A | 1998-10-27 | |||
| JPS58147510A | 1983-09-02 | |||
| JPS6260807A | 1987-03-17 | |||
| JPH07138632A | 1995-05-30 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Katsunori Shirae
Yutaka Yoshida
Hajime Asamura
Katsunori Shirae
Yutaka Yoshida