Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars


ISSN 2594-357X

Title

THE INNOVATIVE PRETREATMENT TECHNOLOGY OF SINTER FEED ORE COPING WITH THE DEGRADATION OF IRON ORE

THE INNOVATIVE PRETREATMENT TECHNOLOGY OF SINTER FEED ORE COPING WITH THE DEGRADATION OF IRON ORE

DOI

10.5151/2594-357X-22260

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Abstract

To cope with the degradation of iron ore, Nippon Steel Corporation has been developing the innovative pretreatment technologies for sintering. We developed the “Selective Granulation” process in1996, with which we pre-granulate hard-to-melt (e.g. high Al2O3 content) iron ores and coat them with easy-to-melt iron ores in order to keep good sintering properties. Consecutively the “SPEx-II” (Semi-Pellet Expansion step-II) process has been developped. It keeps the sintering productivity even if we use fine iron ores like pellet-feed by making hard semi-pellets as a sinterfeed with a roll crusher, a drum pelletizer and a dryer.

 

To cope with the degradation of iron ore, Nippon Steel Corporation has been developing the innovative pretreatment technologies for sintering. We developed the “Selective Granulation” process in1996, with which we pre-granulate hard-to-melt (e.g. high Al2O3 content) iron ores and coat them with easy-to-melt iron ores in order to keep good sintering properties. Consecutively the “SPEx-II” (Semi-Pellet Expansion step-II) process has been developped. It keeps the sintering productivity even if we use fine iron ores like pellet-feed by making hard semi-pellets as a sinterfeed with a roll crusher, a drum pelletizer and a dryer.

Keywords

Iron ore; Sintering; Degradation; Pelletizing.

Iron ore; Sintering; Degradation; Pelletizing.

How to refer

Nishihara, Kazuhiro; Ooyama, Kouichi; Nagata, Junji; Yakashiro, Kenichi; Gushima, Akira; Kasama, Shunji; Kawachi, Shinji; Nagaike., Yuuki. THE INNOVATIVE PRETREATMENT TECHNOLOGY OF SINTER FEED ORE COPING WITH THE DEGRADATION OF IRON ORE , p. 1563-1576. In: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking, Rio de Jabeiro, 2012.
ISSN: 2594-357X , DOI 10.5151/2594-357X-22260