TF111
国家重点研发计划资助项目（2017YFB0603801）。
中国对钒钛磁铁矿中钒的利用仍然存在着诸多难题，特别是对于低品位的矿石，传统的高炉-转炉工艺更加难以实现对钒的高效提取利用。针对其钒钛磁铁矿的利用问题，开展了新工艺的探索，通过竖炉煤基还原-电炉熔分工艺进行铁钒分离，从而实现钒资源的综合高效利用。实验结果表明，最佳工艺参数为1 050℃条件下竖炉煤基还原11.5 h，海绵铁的金属化率为93%，钒的还原率能够控制在3.5%以下；还原过程中加入3%的硼砂添加剂可以明显改善海绵铁的金属化率，使其提高到98.16%；样品中心部位铁的还原程度要优于边缘部位。
There are still many utilization problems of vanadium in vanadium-titanium magnetite in our country. Especially for the low-grade ore, the traditional blast furnace-converter process has proved to be more difficult to realize the efficient extraction and utilization of vanadium. Therefore, a new technology was explored for the utilization of vanadium from titanium magnetite. The shaft furnace coal-based reduction and melting separation by electric furnace were used in this process to separate the iron and the vanadium, thus realizing the efficient utilization of the vanadium resources. The optimum processing parameters gained in the experiment are that the shaft furnace coal-based reduction is 11.5 h at 1 050℃, the metallization rate of sponge iron is 93%, and the reduction rate of vanadium can be controlled below 3.5%. Adding 3% borax to the reduction process can increase the metallization rate of sponge iron up to 98.16%. The reduction of the central part of the sample is better than that of the edge part.
李大成,纪安,扈玫珑.钒钛磁铁矿提钒新工艺研究[J].重庆大学学报,2018,41(10):45-52.
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