机械活化强化石煤酸浸提钒的动力学研究  

Leaching Kinetics on Enhancing Process to Extract Vanadium from Stone Coal by Mechanical Activation

作　　者：刘娟[1] 张一敏[1] 黄晶[1] 刘涛[1] 黄献宝[1] 马浩[1] 

机构地区：[1]武汉科技大学资源与环境工程学院、湖北省页岩钒资源高效清洁利用工程技术研究中心,武汉430081

出　　处：《有色金属（冶炼部分）》2014年第7期27-31,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：“十二五”国家科技支撑计划重点项目(2011BAB05B01)

摘　　要：通过考察浸出温度及硫酸浓度对石煤提钒浸出的影响,研究了机械活化前后矿样的浸出动力学。结果表明,未活化矿样浸出表观活化能为23.49kJ/mol,反应级数为2.34,矿样活化20min后,浸出表观活化能降为16.85kJ/mol,反应级数降至2.21。机械活化能够增强矿样的表面活性,降低浸出过程对温度和硫酸浓度的依赖。The leaching dynamics before and after mechanical activation were studied through investigating effects of leaching temperature and sulfuric acid concentration on vanadium extraction from stone coal. The results indicate that apparent activation energy for non activated ore is 23.49 kJ/mol and reaction series is 2.62, and the according parameters decrease to 16.85 kJ/mol and 2.17 after 20 min mechanical activation. Mechanical activation could contribute to increase of surface energy so as to reduce dependence of leaching process on temperature and acidity.

关 键 词：机械活化 石煤 钒 浸出 动力学 

分 类 号：TF841.3[冶金工程—有色金属冶金]