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| Carbothermal sodium reduction process of vanadium-bearing titanomagnetite |
| ZHANG Jun，DAI Xiao-tian，YAN Ding-liu，QI Yuan-hong |
| （State Key Laboratory of Advanced Steel Processes and Products，Central Iron and Steel Research Institude，Beijing 100081，China） |
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Abstract 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 studied， 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-separation 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-separation slag was washed in water.
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Received: 23 February 2016
Published: 08 October 2016
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2016, Vol. 51 
