助浸剂CX对石煤酸浸提钒效果的影响

Effect of Leaching agent CX on Acidic Leaching of Vanadium from Stone Coal

以湖北某地含钒石煤为研究对象,对采用硫酸直接酸浸和添加助浸剂CX的硫酸酸浸模式进行了详细的对比研究。试验结果表明,助浸剂CX的加入可明显改善钒的浸出效果,缩短反应时间2 h,降低反应温度、H2SO4的用量和反应成本;在CX用量为原矿质量的5%、硫酸浓度为20%、浸出温度为90℃、浸出时间为4 h情况下,钒的浸出率可达90%,比不加助浸剂的情况下高出18.74个百分点。

The experiment presents the investigation of vanadium-bearing stone coal in hubei province, a comperative study was taken between sulfuric acid leaching and sulfuric acid leaching with leaching agent CX added. The experimental results show that the addition of leaching agent CX can effectively improve the leaching effect of the vanadium, shorten the reaction time for 2 h, reduce the dosage of H2 SO4 and reaction temperature and the cost of reaction ; In the case of the dosage of CX is 5% of raw ore quality, sulfuric acid concentration is 20%, and the leaching temperature at 90 ℃, leaching time for 4 h ,vanadium leaching rate can amount to 90% ,which is 18.74% higher than the condition without the leaching agent.