Novel industrialization method for comprehensive utilization of vanadium ferrotitanium ore concentrate

一种新的综合利用钒钛铁精矿的产业化方法

Abstract

The invention relates to a novel industrialized method for comprehensively utilizing vanadium titanium iron ore concentrate. Raw material, an additive and a solid reducing agent are made into a higher-density round ingot through a full automatic press after being mixed evenly by an edge mill; the mixed material is charged into a gradient alloy can and is directly reduced in a tunnel kiln; and after being crushed, the reduced ingot is ground and is magnetically separated to obtain high-quality sponge iron with 92 to 96 percent of TFe and material containing abundant vanadium and titanium with 2.8 to 3.4 percent of V2O5 and 48 to 49 percent of TiO2. After being cold formed, the sponge iron is used for electric steelmaking or is sold as iron powder through deep processing. The material containing abundant vanadium and titanium can be used for producing V2O5 with the purity more than or equal to 98.5 percent through a simplified wet method vanadium extraction process; and vanadium slag with the TiO2 content more than or equal to 48 percent can be used as sulfuric acid method titanium white or other industrial raw materials. The method can greatly improve the capacity of the tunnel kiln and the service life of a charging vessel, has high comprehensive utilization degree, reliable technology, investment conservation and low production cost, energy conservation and emission reduction, and little pollution, and creates conditions for industrialization.
一种新的综合利用钒钛铁精矿的产业化方法。原料与添加剂及固体还原剂用轮碾机混匀后,由全自动压机制成较高密度圆锭,梯度合金罐装料,在隧道窑内直接还原,还原锭破碎后经磨细磁选,获得TFe92~96%的优质海绵铁和含V<sub>2</sub>O<sub>5</sub>2.8~3.4%、含TiO<sub>2</sub>48~49%的富钒钛料,前者冷压成型后供电炉炼钢或深加工成铁粉出售;后者采用简化的湿法提钒流程生产纯度≥98.5%的V<sub>2</sub>O<sub>5</sub>,提钒渣含TiO<sub>2</sub>≥48%,作为硫酸法钛白或其它工业的原料。本发明大幅度提高隧道窑产能和装料容器的使用寿命,综合利用程度高,技术可靠,投资省,生产成本低,节能减排、污染少,为产业化创造了条件。

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