ISSN 2594-357X
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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.
Palavras-chave
Iron ore; Sintering; Degradation; Pelletizing.
Iron ore; Sintering; Degradation; Pelletizing.
Como citar
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
