【作者】 张登高； 蒋训雄； 汪胜东； 范艳青； 蒋伟； 冯林永； 刘巍；

【Author】 Zhang Denggao,Jiang Xunxiong~*,Wang Shengdong,Fan Yanqing,Jiang Wei,Feng Linyong,Liu Wei(Beijing General Research Institute of Mining & Metallurgy,Beijing 100044,China)

【机构】 北京矿冶研究总院；

【摘要】 以石煤发电灰渣为原料,通过对原料硫酸浸出中的温度、粒度、酸度的因素试验进行了动力学的研究,得试验结果显示:浸出过程属于内扩散控制,计算出了反应的表观面活化能E=34.1 kJ/mol,反应级数为0.65级。更多还原

【Abstract】 On the base of the kinetics theory,this paper studied the limitation section which affected getting vanadium from stone coal dusts coming from power plants by sulfuric acid.The kinetics of leaching vanadium was showed that leaching of stone coal slag was controlled by the internal diffusion of the leach liquor through the gangue layer in the whole leach process and fitted the unreacted shrinking core model.The apparent activation energy was 34.10 kJ/mol,the reaction order was 0.65. The percentage of leaching vanadium was raised by temperature increasing,particle sizes reducing and concentration of sulfuric acid increasing.The single-factor dynamics equation was deduced about temperature,granular size,and concentration of acid respectively.更多还原