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