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为探索钒钛磁铁矿经还原-磨选工艺得到的含钒钛尾渣适宜的提钒方法,对比研究了钠化提钒和酸浸提钒两种提钒工艺,研究发现,采用钠化法提钒,钒的浸出率仅为18%左右,采用酸浸法提钒,钒的浸出率在70%以上。钒钛磁铁矿还原磨选法含钒钛尾渣宜采用酸浸提钒的方法进行处理。对物料特性及提钒过程可能发生的物理化学变化分析表明,钒钛磁铁矿还原磨选法含钒钛尾渣钠化法提钒在焙烧过程钒易形成包裹,而酸浸法提钒在预氧化焙烧过程钒不会形成包裹体现象是其钒浸出率较高的主要原因。
In order to explore the vanadium-bearing titanium tailing vanadium titanomagnetite obtained by the reduction - grinding process vanadium titanomagnetism method to compare the two vanadium extraction process of sodium and vanadium extraction, the study found that the use of sodium Fatih vanadium, vanadium leaching rate of only about 18%, the use of acid leaching vanadium, vanadium leaching rate of 70% or more. Vanadium titanium magnetite reduction grinding method Vanadium-bearing titanium tailings should be used acid leaching of vanadium method for processing. The physical and chemical changes of the material properties and the process of vanadium extraction indicated that vanadium titanomagnetite reduction vanadium titanomagnesium titanate containing vanadium titanium tailings in the process of vanadium easy to form inclusions, Pre-oxidation roasting vanadium does not form inclusions is the main reason for the higher vanadium leaching rate.