论文部分内容阅读
为了实现钒钛磁铁精矿的低温综合利用,采取碳热钠化工艺降低还原和熔分温度,考察了铁、钒、钛的富集回收情况。结果表明,钠化剂显著改善了钒钛磁铁精矿的还原及熔分效果,当钠化比为1.2时,1 100℃还原60 min即可达到90%以上的金属化率,1 250℃以上的温度下熔分后,铁的收得率达到96%,钒在铁水中的富集率为75%。熔分渣在无酸环境下经湿法处理后TiO_2含量达到77%,经还原熔分去除铁后品位可进一步提升。
In order to achieve comprehensive utilization of vanadium-titanium magnetite at low temperature, carbon-sodium-sodium process was adopted to reduce the reduction and melting temperature. The enrichment and recovery of iron, vanadium and titanium were investigated. The results show that the sodium reducer significantly reduces the reduction and melting effect of the vanadium-titanium magnetite concentrate. When the sodium ratio is 1.2, the metallization rate can reach over 90% after reduction at 100 ℃ for 60 min, After melting, the yield of iron reached 96% and the enrichment of vanadium in molten iron was 75%. Melting slag in the acid-free environment after wet treatment TiO 2 content of 77%, after the reduction of molten iron to remove the grade can be further improved.