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 o...
【英文摘要】
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 o...
【基金】
Supported by the 973 Program of China(No.2007CB613502)
【更新日期】
2011-06-24
【分类号】
TF521.2
【正文快照】
1 Introduction Siderite(FeCO 3 )is one of the main potential sources of iron.The final products of siderite on calcination are iron oxides[1]including?-Fe 2 O 3 ,?-Fe 2 O 3 ,? Fe 3 O 4 and FeO.Magnetizing roasting,a thermal treatment of siderite to obtain
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