摘要
对冀东磁铁矿球团焙烧的氧化机理进行了研究。结果表明,氧化温度对球团氧化有重要的影响,氧化温度以900℃左右为宜。由于冀东磁铁矿自身的特点,氧首先吸附在颗粒表面的解理缝周围,并与解理缝周围的磁铁矿反应形成针状或片状赤铁矿;然后氧化过程沿磁铁矿的八面体或解理缝继续发展,形成条状或网状结构的赤铁矿,最终完全氧化。脉石成分对球团氧化过程没有影响。
The oxidation mechanism of Jidong magnetite pellets was studied. The results reveal that oxidizing tem- perature has important effect on oxidation of pellets and the reasonable oxidizing temperature is about 900 ~C. Be- cause there are incompletely cleavages in Jidong magnetite concentrate grain, and octahedron crack exists in mag- netite crystal, oxidation develops along octahedron crack or cleavage seam, strip oxidation or reticulation texture is formed, and then magnetite is oxidized to hematite completely. Gangue has no effect on pellets＇ oxidation.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2007年第8期7-10,共4页
Journal of Iron and Steel Research
基金
河北省自然科学基金资助项目(596239)
关键词
冀东磁铁矿
球团
温度
氧化机理
Jidong magnetite concentrate
pellet
temperature
oxidation mechanism
