摘要
采用直接配碳的方式研究了从提钒尾渣还原铁的工艺流程,考察了配碳比、还原温度、时间对物料还原效果的影响,并借助XRD和SEM分析了温度和时间对提钒尾渣还原过程的影响。结果表明:在配碳比2.5、还原温度和时间分别为1 200℃和30 min的最佳工艺参数下,铁的金属化率为85%左右;金属化率随着温度的升高、还原时间的延长而升高;还原过程铁元素的变化规律为Fe2O3→Fe3O4→FeO→Fe;延长还原时间影响铁的品位。
The process of direct reduction of iron from vanadium extraction tailings by directly adding carbon was investigated. The effect of C / O ratio and reduction temperature and time on direct reduction of iron was analyzed by X-ray diffraction and scanning electron microscopy etc. The result shows that with the reduction temperature and time of 1200 ℃ and 30 min respectively,and C / O ratio of 2. 5,the metallization ratio of iron can reach about 85%; the metallization ratio increases with the increase of temperature and reduction time; during the reduction,the element Fe varies following Fe2O3→Fe3O4→FeO→Fe; the quality of the iron is affected with the extension of reduction time.
出处
《钢铁钒钛》
CAS
北大核心
2013年第5期28-32,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金项目(51090384)
863课题2012AA062304
国际合作项目(2012DFR60210)
关键词
提钒尾渣
配碳比
铁
还原
金属化率
vanadium extraction tailings
C /O
iron,reduction
metallization ratio
