Title:
製鋼スラグの改質方法およびランス
Document Type and Number:
Japanese Patent JP7184179
Kind Code:
B2
Abstract:
A method of modification of steelmaking slag is provided whereby wearing of a lance during modification can be reduced while ensuring expansion stability for the steelmaking slag having undergone a modification process. A method is provided that modifies steelmaking slag by blowing oxygen-containing gas into a molten steelmaking slag. The method includes dipping a lance made of a metal pipe around which is installed a refractory having a thickness of 5 mm or more and blowing oxygen-containing gas into a steelmaking slag to be modified having an internal temperature of 1,450°C or more.
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Inventors:
Yusuke Kato
Seiji Hosonohara
Nakamura Yoshiyuki
Takahashi Katsunori
Seiji Hosonohara
Nakamura Yoshiyuki
Takahashi Katsunori
Application Number:
JP2021519336A
Publication Date:
December 06, 2022
Filing Date:
April 22, 2020
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C04B5/06; C04B35/66; C21C1/02; C21C5/28; C21C7/00
Domestic Patent References:
| JP2017141148A | ||||
| JP2007254889A | ||||
| JP2003183717A | ||||
| JP2016033103A | ||||
| JP2017020058A | ||||
| JP2008266035A |
Foreign References:
| US3430940 |
Attorney, Agent or Firm:
Tetsuro Isomura
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori