Title:
METHOD OF OPERATING ROTARY HEARTH FURNACE FOR REDUCING OXIDES
Document Type and Number:
WIPO Patent Application WO/1999/016912
Kind Code:
A1
Abstract:
A mixed layer of powdery ore and coal char and a powdery coal layer are built up on a hearth moving horizontally, and the powdery coal is reduced and thermally decomposed to obtain coal char. The resultant coal char is used repeatedly.
Inventors:
TAKEDA KANJI (JP)
SAWA YOSHITAKA (JP)
YAMAMOTO TETSUYA (JP)
SAWA YOSHITAKA (JP)
YAMAMOTO TETSUYA (JP)
Application Number:
PCT/JP1998/001398
Publication Date:
April 08, 1999
Filing Date:
March 27, 1998
Export Citation:
Assignee:
KAWASAKI STEEL CO (JP)
TAKEDA KANJI (JP)
SAWA YOSHITAKA (JP)
YAMAMOTO TETSUYA (JP)
TAKEDA KANJI (JP)
SAWA YOSHITAKA (JP)
YAMAMOTO TETSUYA (JP)
International Classes:
C21B13/10; F27B9/16; (IPC1-7): C21B13/00; C21B13/10
Foreign References:
| JPS63108188A | 1988-05-13 | |||
| JPH02228411A | 1990-09-11 |
Other References:
See also references of EP 0976840A4
Attorney, Agent or Firm:
Ochiai, Kenichiro (Tokyo Head Office Hibiya Kokusai Building,
2-3, Uchisaiwaicho 2-chom, Chiyoda-ku Tokyo, JP)
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