摘要
煤矸石是我国排放量最大的一种固体废弃物,其中含有丰富的氧化铁资源,为了高效提取煤矸石中的氧化铁,从化学反应动力学角度出发,对硫酸浸取煤矸石中Fe2O3的动力学进行研究.结果表明,该反应的动力学符合未反应收缩芯模型,反应的动力学方程是:1-(1-XB)2/3=kt,反应频率因子是13 240,反应活化能是5.8×104 J/mol,过程速率为流体液膜扩散速率控制.
Coal gangue is the largest emissions of solid waste in our country,which is rich in iron oxide.In order to abstract the iron oxide from coal gangue efficiently,from the perspective of chemical kinetics,the research on kinetics of sulfuric acid leaching Fe2O3 out of coal gangue was carried out.The result shows that this reaction kinetics coincident with the unreacted shrinking-core model,the kinetic equation is 1-（1-XB）2/3=kt,the reaction frequency exponent is 13 240,the reaction energy is 5.8×104 J/mol,and the diffusion rate of the fluid liquid membrane control the process rate.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第4期50-53,共4页
Coal Conversion
关键词
煤矸石
FE2O3
未反应收缩芯
动力学方程
coal gangue
Fe2O3
reaction on without shrinking core
kinetic equation
