高炉粉尘造泡沫渣过程中FeO还原动力学的研究

为了循环利用高炉粉尘，研究了用宝山钢铁股份有限公司高炉粉尘与沥青焦粉混合后加入电弧炉造泡沫渣过程中FeO的还原动力学。结果表明，随粉尘加入量的增加和温度的升高，FeO的还原速率加快；用固体碳还原渣中FeO的反应为表观二级反应，其表观活化能为276kJ／mol；用固体碳还原渣中FeO的反应总速率由CO还原FeO的界面化学反应和炉渣的流动传质共同控制。

Reduction Kinetics of FeO during Formation of Foamed Slag Using Recycled BF Dust

In order to recycle the BF dust, reduction kinetics of FeO during the formation of foamed slag by adding BF dust and pitch coke to EAF was investigated. The results show that the reduction rate of FeO is enhanced with the increase of BF dust amount added and temperature. The reaction in which to reduce FeO by carbon in slag is the apparent second order reaction, and the apparent activation energy is 276 kJ/mol. The reaction rate reducing of FeO reduction by carbon is controlled by both chemical reaction at the interface and flow of molten slag.