为了降低钒钛磁铁矿的还原和熔分温度，提高钛与钒的回收率，采取碳热钠化还原法处理钒钛磁铁矿，研究了钠化剂对钒钛磁铁矿还原以及熔分后钛、钒分布的影响。结果表明，钠化剂能显著改善钒钛磁铁矿的还原性以及磁选和熔分效果，钠化比为1.2时，1100℃还原60 min即可达到90%以上的金属化率，磁选后铁的收得率达到92%以上，铁品位接近80%。1450℃以上的温度熔分后，铁的收得率高于95%，钒在铁水中的分配比为91%，熔分渣水洗后w(TiO2)达到56%。
In order to reduce the reduction and smelting-separation temperatures of vanadium-bearing titanomagnetite, and improve the recovery rate of Ti and V,the carbothermic reduction in combination with sodium-treatment was stud-ied,and the effects of sodium agent on reduction as well as the distribution of Ti and V after smelting-separation were discussed. The sodium agent significantly improves the reducibility,the magnetic separation as well as the smelting-sep-aration performance of vanadium-bearing titanomagnetite,the metallization ratio reached 90%at 1 100℃for 60 min when the sodium ratio was 1.2,and the fine iron concentrate with a iron grade of 80%as well as iron yield of 92%was obtained after magnetic separation. The iron yield was higher than 95%,and the distribution ratio of V reached 91%when the sample was smelting-separated at 1 450℃. Moreover,w(TiO2) in slag reached 56%when the smelting-separa-tion slag was washed in water.
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