【作者】 周雪娇； 魏昶； 李旻廷； 邱爽； 徐红胜； 樊刚；

【Author】 Zhou Xuejiao,Wei Chang~*,Li Minting,Qiu Shuang,Xu Hongsheng,Fan Gang(Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology,Kunming 650093,China)

【机构】 昆明理工大学冶金与能源工程学院；

【摘要】 研究了石煤酸浸过程中钒溶解非等温动力学。考察了搅拌转速及升温速率对钒浸出率的影响。实验结果表明,搅拌转速在300r/min以上对钒溶解速率影响很小;加快升温速率,可以提高钒浸出率;在反应初始阶段(15～20min,343K以下),钒浸出率较低(<5.5%)。采用一种非等温动力学模型来描述石煤酸浸反应过程。结果显示,在室温与423K之间,该浸出过程的平均表观活化能E为76.24kJ/mol。更多还原

【Abstract】 The non-isothermal kinetics of vanadium dissolution from black shale by acid leaching was investigated.The effects of agitation speed and heating rate on vanadium leaching rate were determined.The results showed that the vanadium extraction was independent of agitation speed above 300 r/min and increased with increasing the heating rate,at the beginning of reaction (15～20 min,lower than 343 K),it was lower than 5.5%.A non-isothermal kinetics model was applied to describe the leaching of vanadium from black shale.It was found that the mean apparent activation energy of the kinetics process was 76.24 kJ/mol between surrounding temperature and 423 K.更多还原