Kinetics of the Thermal Decomposition of Wangjiatan Siderite  

作　　者：冯志力 

机构地区：[1]Huazhong University of Science and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2011年第3期523-526,共4页武汉理工大学学报（材料科学英文版）

基　　金：Supported by the 973 Program of China(No.2007CB613502)

摘　　要：The thermal decomposition processes of Wangjiatan siderite samples were studied in nitrogen by thermogravimetric（TG）analysis.The mechanism of thermal decomposition of the siderite obeyed an F n kinetic law and the n-order was between 1.16 and 1.29.The results from non-isothermal experiments show that the size of particles has an obvious effect on the logarithm of pre-exponential factor in kinetics parameter of the thermal decomposition of Wangjiatan siderite.A linear relationship is shown between the size of particles and the logarithm of pre-exponential factor.An F 1 kinetic model containing size factor describes the thermal decomposition of Wangjiatan siderite well.The thermal decomposition processes of Wangjiatan siderite samples were studied in nitrogen by thermogravimetric（TG）analysis.The mechanism of thermal decomposition of the siderite obeyed an F n kinetic law and the n-order was between 1.16 and 1.29.The results from non-isothermal experiments show that the size of particles has an obvious effect on the logarithm of pre-exponential factor in kinetics parameter of the thermal decomposition of Wangjiatan siderite.A linear relationship is shown between the size of particles and the logarithm of pre-exponential factor.An F 1 kinetic model containing size factor describes the thermal decomposition of Wangjiatan siderite well.

关 键 词：thermal decomposition mechanism kinetics siderite 

分 类 号：TF521.2[冶金工程—钢铁冶金]