由于粒度对石灰石分解动力学影响的研究结果差别较大，因此采用多重扫描速率法和单个扫描速率法相结合的动力学方法作进一步研究。通过对5种不同粒径的石灰石进行考察，结果表明：活化能随转化率的增大而减小，随粒度的增加呈现先增大后减小的规律，Avrami-Erofeev方程控制的随机成核和随后生长模型为石灰石分解的最概然机制函数，因此该方法是可行的和可信的，也说明动力学方法的选择是重要的。

Results on impaction of particle size to limestone decomposition kinetics existed great difference, therefore a method combining the multi-heating rate methods with the single-heating rate methods was applied to make further research. Five limestone samples with various granularities were investigated. The results indicate that activation energy decreases with the addition of conversion rate and first increases and then decreases with the addition of particle size, and the decomposition mechanism of limestone is in according with the randomly nucleating and nucleus growth model controlled by Avrami-Erofeev equation. So the method is more feasible and more reliable, and the choice of methods is very important.

“十一五”国家科技支撑计划项目(2006BAA01B06)。