北京科技大学学报2011，Vol.33Issue(11)：1331-1336,6.
钒钛磁铁精矿直接还原反应行为及其强化还原研究
Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrates
摘要
Abstract
Vanadium-bearing titanomagnetite concentrates were reduced isothermally by adding pulverized coal and additives.Some factors which influence the metallization degree,such as reaction temperature,reaction time,C-to-Fe molar ratio and additives,were investigated.The enhanced reduction mechanism of additives was also discussed.The results show that reaction temperature,reaction time,C-to-Fe molar ratio and additives have great effect on the metallization degree.Under the condition of the reaction temperature of 1 200 ℃ and the reaction time of 120 min,the maximum metallization degree is 84.5% without any additive.Using Na2CO3 or CaF2 as an additive,the reduction of vanadium-bearing titanomagnetite concentrates can be promoted.With the addition of 3.0% Na2CO3 or CaF2,the metallization degree of vanadium-bearing titanomagnetite concentrates can reach up to 96.5% and 93.3% after the samples are heated at 1 200 ℃ for 120 min,respectively.关键词
钒钛磁铁精矿/直接还原/添加剂/金属化率Key words
vanadium-bearing titanomagnetite/direct reduction/additives/metallization degree分类
化学工程引用本文复制引用
陈德胜,宋波,王丽娜,齐涛,王伟菁..钒钛磁铁精矿直接还原反应行为及其强化还原研究[J].北京科技大学学报,2011,33(11):1331-1336,6.基金项目
国家自然科学基金资助项目 （）
中国科学院知识创新工程重要方向项目 （）
国家重点基础研究发展计划资助项目 （）
