摘要
对攀枝花钛铁矿的高温氧化过程进行了研究。结果表明,钛铁矿的氧化速度随温度的增加、粒度的减小快速增长;温度是影响氧化产物物相的重要因素,当温度低于900℃时,生成物的物相为Fe2Ti3O9、Fe2O3和TiO2,而当温度达到900℃时,氧化产物之间发生相转变反应生成Fe2TiO5。氧化动力学可用二维扩散模型拟合,氧化反应的表观活化能为132.86(±0.51)kJ/mol。
The oxidation of Panzihua ilmenite was investigated. The results showed that the oxidation speeded up with the increasing oxidation temperature and decreasing particle size. The reaction temperature played a very important role in the oxidation. The oxidized products involved Fe2Ti3O9,Fe2O3 and TiO2 when the temperature was lower than 900 ℃. At the temperature beyond 900 ℃,a phase transformation reaction between the products occurred with formation of Fe2TiO5. The oxidation kinetic could be represented by the two-dimension diffusion model. The apparent activation energy of the oxidation was 132. 86（ ± 0. 51） kJ / mol.
出处
《广州化工》
CAS
2014年第9期77-79,共3页
GuangZhou Chemical Industry
关键词
钛铁矿
氧化
动力学
ilmenite
oxidation
kinetic
