CO还原含Fe_tO二元炉渣反应速度研究(Ⅰ)  

RATE OF REDUCTION OF IRON OXIEDE IN BINARY MOLETEN SLAG SYSTEM WITH CO:PART Ⅰ

作　　者：杨学民[1] 王大光[1] 宣德茂[1] 唐武成[1] 

机构地区：[1]中国科学院化工冶金研究所,北京100080

出　　处：《化工冶金》1993年第3期195-198,共4页

基　　金：中国科学院;国家自然科学基金

摘　　要：温度为1450℃时,用 CO 气体进行了还原 Fe_tO-SiO_2、Fe_tO-CaO、Fe_tO-MnO 三个二元渣系的试验,根据 CO_2红外分折仪测定的出口气体中 CO_2含量计算了还原反应速度.结果表明,Fe_tO-SiO_2渣系的反应速度随 SiO_2含量的增加而减小;MnO 对 Fe_tO 的还原反应速度影响不大;Fe_tO-CaO 渣系的反应速度随 CaO 含量的增加而减小,但 CaO 含量小于10%时,CaO 对 Fe_tO 的还原速度有增加作用.The rate of reduction of Fe_tO with CO gas at 1723K was measured for Fe_tO- SiO_2,Fe_tO-CaO and Fe_tO-MnO binary systems in pure iron crucible.The reduction rate was established from measurement of CO_2 evolution by an infrared gas analyser.It was found that the addition of SiO_2 to pure liquid Fe_tO remarkably decreased the reduction rate;but the addition of MnO increased it slightly.For the Fe_tO-CaO binary slag system,if the CaO content was less than 10%,the addition of CaO to the liquid Fe_tO could increase the reduc- tion rate,but CaO would decrease FetO reduction rete if the content of CaO was more than 10%.

关 键 词：FETO 还原速度 二元熔渣 CO气体 

分 类 号：TF11[冶金工程—冶金物理化学]