Title:
METHOD FOR PRODUCING IRON ORE PELLETS
Document Type and Number:
WIPO Patent Application WO/2010/007849
Kind Code:
A1
Abstract:
Provided is a method for producing pellets wherein bursting in the preheating chamber of a grate furnace can be prevented surely in a grate-kiln pelletizing system. The current operational conditions (e.g. at least one of the burning capacity of a water-separation-chamber burner (31), the burning capacity of a preheating-chamber burner (21), the moving speed of a grate, or the thickness of a pellet layer) are regulated such that the temperature difference ΔT=T2-T1 between the atmospheric temperature (T2) in the upper space of a preheating chamber (5) measured by means of a thermometer (43) provided separately at the inlet of the preheating chamber (5) and the gas temperature (T1) at the outlet of a water separation chamber (4) measured by means of a water-separation-chamber-outlet grate thermometer (42) provided directly under a grate (2) becomes smaller than an allowable temperature difference ΔTmax which is determined beforehand based on the actual operational performance in the past.
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Inventors:
MAKI, Takeshi (())
牧 剛司 (())
HASEGAWA, Nobuhiro (())
長谷川 信弘 (())
牧 剛司 (())
HASEGAWA, Nobuhiro (())
長谷川 信弘 (())
Application Number:
JP2009/060872
Publication Date:
January 21, 2010
Filing Date:
June 15, 2009
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 〒6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
MAKI, Takeshi (())
牧 剛司 (())
HASEGAWA, Nobuhiro (())
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
MAKI, Takeshi (())
牧 剛司 (())
HASEGAWA, Nobuhiro (())
International Classes:
C22B1/216; C22B1/16; F27B21/14; C22B1/16; F27B21/00
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (AOYAMA & PARTNERS, IMP Building3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka 01, 〒5400001, JP)
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