Title:
PROCESS FOR PRODUCING SINTERED ORE AND SINTERING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2010/064731
Kind Code:
A1
Abstract:
A process for sintered-ore production in which high-quality sintered ore having high strength can be safely produced in a high yield with a sintering apparatus of a downward suction type; and the sintering apparatus. The process for sintered-ore production comprises: placing a raw material to be sintered comprising fine ore and a carbon material, on a circulating pallet (8) to form a raw-material layer (9); igniting the carbon material of the raw-material layer in an ignition furnace; and sucking air with a wind box disposed under the pallet to thereby produce sintered ore. After the raw-material layer (9) has been ignited in the ignition furnace, a liquid fuel is atomized to a particle size of 100 µm or smaller and supplied to over the raw-material layer (9), and the atomized liquid fuel is supplied from over the raw-material layer (9) into the raw-material layer (9) after having been diluted at least to the lower limit of ordinary-temperature combustion concentrations. The sintering apparatus has, disposed downstream from the ignition furnace, a liquid-fuel injector which injects the liquid fuel over the raw-material layer.
Inventors:
OYAMA, Nobuyuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
大山伸幸 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
大山伸幸 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
Application Number:
JP2009/070636
Publication Date:
June 10, 2010
Filing Date:
December 03, 2009
Export Citation:
Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
ＪＦＥスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
OYAMA, Nobuyuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
ＪＦＥスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
OYAMA, Nobuyuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
International Classes:
C22B1/20; F27B21/08
Attorney, Agent or Firm:
OCHIAI, Kenichiro (JFE Techno-Research Corporation 7th Floor, Yanagiya Building,,1-10, Nihonbashi 2-chome, Chuo-k, Tokyo 27, 〒1030027, JP)