中文摘要：

在非等温条件下研究高铁三水铝土矿的热分解动力学。利用Pcpescu法分析高铁三水铝土矿的热分解反应机理。结果表明,Jander方程的三维扩散模型是高铁三水铝土矿热分解反应的最概然机理函数,函数机理代码为D3。由Popescu法得到的高铁三水铝土矿热分解活化能和指前因子分别为75.36 KJ/mol和1.51×105s-（-1）。由等转化率方法求出的活化能验证了所求机理函数的正确性。Popescu法是分析高铁三水铝土矿热分解反应机理较为合理和可靠的方法。

英文摘要：

The thermal decomposition kinetics of high iron gibbsite ore was investigated under non-isothermal conditions.Popescu method was applied to analyzing the thermal decomposition mechanism.The results show that the most probable thermal decomposition mechanism is the three-dimensional diffusion model of Jander equation,and the mechanism code is D3.The activation energy and pre-exponential factor for thermal decomposition of high iron gibbsite ore calculated by the Popescu method are 75.36 kJ/mol and 1.51×10-5 s-（-1）,respectively.The correctness of the obtained mechanism function is validated by the activation energy acquired by the iso-conversional method.Popescu method is a rational and reliable method for the analysis of the thermal decomposition mechanism of high iron gibbsite ore.