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通过大量试验研究,提出了“钒钛磁铁矿转底炉直接还原—电炉深还原—含钒铁水提钒—含钛炉渣提钛”工艺流程。铁、钒、钛元素回收率分别达到90.77%、43.82%和72.65%。通过试验室和工业试验研究,解决了钒钛磁铁矿直接还原金属化率低、电炉深还原钒还原率低、高硅铁水提钒、高镁铝含钛炉渣提钛等技术难题,获得了直接还原金属化率大于90%,电炉深还原钒还原率大于80%,钒渣提钒钒回收率大于65%,钛渣提钛钛回收率大于75%的良好效果,分别获得了符合电炉炼钢要求的低碳生铁、符合YB/T5304-2006要求的片状V2O5和达到PTA121质量要求的钛白产品。
Through a large number of experimental studies, proposed “vanadium titano-magnetite direct reduction of hearth furnace - deep reduction of electric furnace - Vanadium-containing molten iron to mention vanadium - titaniferous slag Titanium” process. The recoveries of iron, vanadium and titanium reached 90.77%, 43.82% and 72.65% respectively. Through the laboratory and industrial experimental research, the technical problems of vanadium titanomagnetite, such as low direct metallization rate, deep reduction of vanadium in the electric furnace, vanadium extraction from high silicon hydrometallurgy and titanium extraction from high magnesium aluminum titanate slag, have been solved. The direct reduction metallization rate is more than 90%, the deep reduction of vanadium in the electric furnace is more than 80%, vanadium slag is more than 65%, the titanium slag is more than 75% Low carbon pig iron required by the steel, flake V2O5 meeting the requirements of YB / T5304-2006, and titanium dioxide products meeting the quality requirements of PTA121.