Title:
METHOD OF PRODUCING METALLIC IRON AND RAW MATERIAL FEED DEVICE
Document Type and Number:
WIPO Patent Application WO2001073137
Kind Code:
A3
Abstract:
Method of producing granular metallic iron, including: solid-state reducing a formed raw material comprising a carbonaceous reductant and a substance containing iron oxide; and carburizing reduced iron resulting from the solid-state reduction with carbon contained in the carbonaceous reductant to cause the reduced iron to melt, while separating off gangue components and causing resulting molten metallic iron to coalesce into the granular metallic iron, wherein an atmospheric gas present in proximity to the formed raw material in the carburizing and melting step has a reduction degree of not less than 0.5. Method of producing metallic iron, including forming a deposit layer containing slag produced in the reduction melting process on hearth refractories. Device for supplying an auxiliary raw material to a hearth of a moving hearth type iron reduction melting furnace including a supply duct vertically with a ceiling portion of the furnace.
Inventors:
ITO SHUZO
TANIGAKI YASUHIRO
KIKUCHI SHOICHI
TSUGE OSAMU
KOBAYASHI ISAO
HONDA KEISUKE
TOKUDA KOJI
OKAMOTO HIDEKAZU
TANIGAKI YASUHIRO
KIKUCHI SHOICHI
TSUGE OSAMU
KOBAYASHI ISAO
HONDA KEISUKE
TOKUDA KOJI
OKAMOTO HIDEKAZU
Application Number:
PCT/EP2001/003538
Publication Date:
January 10, 2002
Filing Date:
March 28, 2001
Export Citation:
Assignee:
MIDREX INTERNAT B V (CH)
International Classes:
C21B13/00; C21B13/10; (IPC1-7): C21B13/10
Domestic Patent References:
| WO1998046953A1 | 1998-10-22 | |||
| WO2000029628A1 | 2000-05-25 |
Foreign References:
| EP0947586A1 | 1999-10-06 | |||
| EP0969105A1 | 2000-01-05 | |||
| US6036744A | 2000-03-14 | |||
| US5972066A | 1999-10-26 | |||
| US3197303A | 1965-07-27 | |||
| US3452972A | 1969-07-01 | |||
| US3443931A | 1969-05-13 | |||
| EP1026265A1 | 2000-08-09 | |||
| DE19543074A1 | 1997-05-15 |
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