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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 reduction of iron from vanadium tailings was studied by using carbon directly. The effects of carbon ration, reduction temperature and time on the material reduction were investigated. The effects of temperature and time on the reduction of vanadium Effect of slag reduction process. The results show that the metalization rate of iron is about 85% under the optimum process parameters of carbon-dioxide ratio 2.5, reduction temperature and time of 1 200 ℃ and 30 min, respectively. The metallization rate decreases with the increase of temperature, , And the change rule of iron element in the reduction process is Fe2O3 → Fe3O4 → FeO → Fe; prolonging the reduction time will affect the grade of iron.