硅质石煤钒矿无污染氧化剂氧化-酸浸法提钒工艺研究

Study on the Process of Extracting Vanadium from Stone Coal Vanadium Ore by No Pollution Oxidizer-Oxidizing-Acid Leaching

通过单因素条件试验确定了"氧化剂氧化—硫酸浸出提钒工艺"的最优工艺参数。试验结果表明,在氧化剂二氧化锰用量为5%、硫酸浓度为40%、浸出温度为90℃、矿物粒度-74μm、浸出时间为9h、液固比为2.5∶1的条件下,钒的浸出率可达72.4%。比起传统的钠化焙烧工艺高出10%以上。

The optimal technological parameters of the process of no pollution oxidizer-oxidizing were experimented by the test of single factor conditions.The results showed that the leaching rate of vanadium pentoxide is up to 72.4% at the temperature 90℃,manganese dioxide dosage 5%,concentration of sulfuric acid of 40%,particle size-74 μm,leaching time 9 h,the mass ratio of liquid and solid 2.5∶1.It is about 10% higher than the process of oxidization roasting with sodium salt.