Title:
HOT METAL PRODUCTION FROM DRI WITH ELECTRIC ARC HEATING
Document Type and Number:
WIPO Patent Application WO/2023/172597
Kind Code:
A3
Abstract:
According to embodiments, disclosed is a method and system to maintain the soft and sparse slag characteristic favorable for an electric arc to efficiently transfer the energy to molten iron with the power input per furnace area higher than 600KW/m2 while keeping FeO amount less than 5% in the slag and carbon amount higher than 2.5% in the product hot metal at a DRI melting furnace.
Inventors:
MICHISHITA HARUYASU (US)
TOKUDA KOJI (JP)
MIMURA TSUYOSHI (JP)
FUJIWARA KATSUMA (JP)
TOKUDA KOJI (JP)
MIMURA TSUYOSHI (JP)
FUJIWARA KATSUMA (JP)
Application Number:
PCT/US2023/014776
Publication Date:
November 02, 2023
Filing Date:
March 08, 2023
Export Citation:
Assignee:
MIDREX TECHNOLOGIES INC (US)
KOBE STEEL LTD (JP)
KOBE STEEL LTD (JP)
International Classes:
C21B7/00; C21B5/00; C21B5/06
Foreign References:
| US20030000338A1 | 2003-01-02 | |||
| US6524362B1 | 2003-02-25 | |||
| US20210301359A1 | 2021-09-30 | |||
| US6379424B1 | 2002-04-30 | |||
| US5802097A | 1998-09-01 | |||
| US4661150A | 1987-04-28 |
Attorney, Agent or Firm:
BENINATI, Christine W. et al. (US)
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