通过分析煤系高岭土及其煅烧产物的粒度 ,得出 :煤系高岭土的粒度分布具有分形规律 ,同时发现煤系高岭土的粒度变化包括膨胀阶段和收缩阶段 ,并且与高岭土的结构变化相关。计算不同煅烧温度的煅烧产物的粒度分布分维数 ,并得出分维数与煅烧温度的关系曲线 ,由此关系曲线可较容易地确定出煤系高岭土的煅烧温度。 By analyzing the grain size of coal kaolin and its calcined product, it is concluded that the particle size distribution of coal - based kaolin is fractal, and the change of particle size of coal - based kaolin including the expansion phase and the shrinkage phase is also found, which is related to the structural change of kaolin. Calculate the fractal dimension of particle size distribution of the calcined products with different calcination temperature, and get the curve of the fractal dimension and the calcination temperature. From this relationship curve, the calcination temperature of coal-based kaolin can be more easily determined.