Title:
MOLTEN IRON PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/054345
Kind Code:
A1
Abstract:
In the case of this molten iron production method, with the use of a stationary direct-current electric furnace, an auxiliary material is supplied to a stationary direct-current electric furnace in a state in which a solid iron source is present in an in-furnace peripheral wall space and the solid iron source is absent in a space facing an upper electrode, and molten iron having a C concentration of 2 to 4 % by mass% and a temperature of 1,400 ˚C to 1,550 ˚C is tapped from a taphole.
Inventors:
HARADA TOSHIYA (JP)
Application Number:
PCT/JP2022/035903
Publication Date:
April 06, 2023
Filing Date:
September 27, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21C7/00; C21B11/10; C21C1/02; C21C5/28
Domestic Patent References:
| WO1999011826A1 | 1999-03-11 | |||
| WO2018110171A1 | 2018-06-21 | |||
| WO2014003123A1 | 2014-01-03 |
Foreign References:
| JPS5178711A | 1976-07-08 | |||
| JP2021080540A | 2021-05-27 | |||
| JPH09227925A | 1997-09-02 | |||
| JP2021134386A | 2021-09-13 | |||
| JP2021161078A | 2021-10-11 | |||
| JP2011080143A | 2011-04-21 | |||
| JP2017057431A | 2017-03-23 | |||
| JP2018193574A | 2018-12-06 | |||
| JP2015140294A | 2015-08-03 | |||
| JP2017128747A | 2017-07-27 | |||
| JP2021134386A | 2021-09-13 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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