摘要
对钒矿石进行了无盐焙烧—硫酸浸出—P204有机萃取—铵盐沉钒提取五氧化二钒的工艺研究。结果表明,该钒矿石于800℃焙烧1.5 h、焙烧矿磨矿粒度小于1.19 mm占84%的条件下,用硫酸浸出,钒的浸出达90%以上;用P204和TBP的磺化煤油溶液萃取、再用氨水沉钒,最终得到纯度98.74%的五氧化二钒,全流程钒回收率达85%以上。
The recovering of V2O5 by roasting in air—sulfuric acid leaching—P204 extracting—precipitate separation V2O5 with ammonium salt from the vanadium ore was tested. The results show that about 90 % of the vanadium can be leached after roasted 1.5 h in air at 800 ℃ while the rate of 〈 1.19 mm roasted - ore is 84%. The acid leaching was taken out at normal temperature for 1h, and the mass ratio of liquid and solid was 1.2：1, then a pure solution containing V2O5 was acquired. After been extracted with P204 and TBP dissolved in sulfonated kerosene and precipitated with ammonium water and pyrolytic decomposition, the refine V2O5 （purity 98.74%） was acquired. The straight receive rate of V2O5 was over 85%.
出处
《钢铁钒钛》
CAS
2006年第1期21-26,共6页
Iron Steel Vanadium Titanium
