Title:
PROCESS FOR MANUFACTURING MOLTEN METAL IRON
Document Type and Number:
WIPO Patent Application WO2001073136
Kind Code:
A3
Abstract:
A process comprising: charging a raw material compacting substance containing a carbonaceous reducing agent and an iron oxide contained substance into a moving hearth type furnace; reducing the raw material compacting substance to a reducing ratio 30 to 80 % within the reducing furnace to thereby form a shell formed of metal iron or forming a state that a shell formed of metal iron or metal iron are stretched around in a network fashion and a carbonaceous reducing agent remains in a clearance therebetween; agglomerating produced slag containing FeO therein; charging the compacting substance reduced into a melting furnace in a state maintaining a high temperature, and carrying out final reducing and melting to obtain molten metal iron.
Inventors:
TANIGAKI YASUHIRO
URAGAMI AKIRA
URAGAMI AKIRA
Application Number:
PCT/EP2001/003539
Publication Date:
January 10, 2002
Filing Date:
March 28, 2001
Export Citation:
Assignee:
MIDREX INTERNAT B V (CH)
International Classes:
C21B13/06; C21B13/08; C21B13/10; C21B13/12; F27B3/06; F27B3/08; F27B9/16; F27B19/04; (IPC1-7): C21B13/10
Foreign References:
| US5873925A | 1999-02-23 | |||
| EP0952230A1 | 1999-10-27 | |||
| US6036744A | 2000-03-14 | |||
| EP0969105A1 | 2000-01-05 | |||
| US3443931A | 1969-05-13 | |||
| US4701214A | 1987-10-20 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
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