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钒钛铁精矿外配一定量的CaO或MgO,能在氧化焙烧及还原过程破坏原矿中极难还原的钛磁铁矿矿相,使之转变成易还原的自由铁氧化物,于是以普通矿的还原条件即可获得90％的金属化率,还原温度能在现有水平上大幅度降低。碱度球团的生产已有成熟经验,其强度与还原性能具备竖炉还原条件。海绵铁渣相含高CaO、MgO,对下步工序熔化分离有利,对提取钒钛并不构成障碍性困难。
In addition, a certain amount of CaO or MgO is added to the vanadium-titanium iron ore concentrate to destroy the titanium magnetite phase which is extremely difficult to be reduced in the ore during the process of oxidization roasting and reduction so as to convert it into an easily reducible free iron oxide, Metallization rates of 90% are obtained from the ore reduction conditions, and the reduction temperature can be significantly reduced at the current level. Alkalinity pellet production has a mature experience, its strength and reduction performance with shaft furnace reduction conditions. Sponge iron slag phase with high CaO, MgO, the next step of the melt separation is beneficial to the extraction of vanadium and titanium does not constitute a barrier difficulties.