含钒的铁精矿经造球和氧化焙烧后,直接提取五氧化二钒,将提钒后的球团用作高炉炉料,这样既可提高钒的提取率,同时又完成了高炉炉料的造块工作,这是冶金工作者期望实现的流程。但是,研究表明采用钠盐(苏打或芒硝)作为添加剂,提钒后的铁精矿球团中残存0.7～1.2%的Na_2O,它不仅会引起球团在高炉还原时的灾 Vanadium iron ore concentrate and oxidized roasting, the direct extraction of vanadium pentoxide, vanadium extraction of the pellet used as a blast furnace charge, so as to not only improve the extraction rate of vanadium, but also completed the manufacture of blast furnace charge Block work, which is the metallurgical workers expect to achieve the process. However, studies have shown that the use of sodium salt (soda or mirabilite) as an additive to extract vanadium iron ore pellets remaining 0.7 ~ 1.2% of Na2O, it will not only cause the pellet reduction in the blast furnace disaster