含钛高炉渣的综合利用

提出了钒钛磁铁矿钠化还原实现铁、钒、钛一歩分离的新技术；研究表明：碳酸钠对钒钛磁铁矿铁、钒、钛一歩分离效果较好，在有足量碳酸钠存在时，三氧化二钒即使在还原性气氛下也能转变为可溶性的钒酸钠，增加碳酸钠用量，钒钛磁铁矿的金属化率及钒转化率均随之升高；提高反应温度，金属化率升高，钒转化率略有降低；在煤粉添加量15%、碳酸钠添加量24%、还原温度1100℃时，钠化还原-浸出-磁选工艺可实现铁、钒、钛的有效分离，得到铁粉、浸钒液和钛渣三种产物，铁、钒、钛的收率分别为95%、85%、52%；使用碳酸钙替换部分碳酸钠，仍可实现还原过程中铁与钒的同时转化，但相应的转化率随碳酸钙的增加而降低。

New technique for the separation of iron, vanadium and titanium in vanadium titanium magnetite

A new technology was proposed to realize the reduction of sodium vanadium titanium magnetite iron, vanadium and titanium step separation; research shows that sodium carbonate is better to follow the separation effect of vanadium titanium magnetite iron, vanadium, titanium, in the presence of a sufficient amount of sodium carbonate, three of two vanadium even under reducing atmosphere will be transformed into sodium vanadate soluble, increase the amount of sodium carbonate, the metallization rate and conversion of vanadium vanadium titanium magnetite were increased; increasing the reaction temperature, the metallization rate increased, the conversion rate of vanadium decreased slightly in 9%; the amount of pulverized coal, adding 20% sodium carbonate, reduction temperature of 1050 DEG C, sodium reduction leaching magnetic separation process can be to realize the effective separation of iron, vanadium, titanium, iron, vanadium leaching liquid and obtained three products of titanium slag, iron, vanadium and titanium yield were 95%, 85%, 52%; replacing part of sodium carbonate using calcium carbonate, can achieve the reduction process The simultaneous conversion of iron and vanadium, but the corresponding conversion rate decreases with the increase of calcium carbonate.