研究了超细煤系煅烧高岭土制备过程中由于颗粒细化所产生的机械力化学效应。结果表明，湿法超细粉碎煤系煅烧高岭土颗粒，可导致颗粒晶体结构发生晶格畸变和非晶化，同时颗粒密度降低，白度有所提高。机械力化学效应使煤系煅烧高岭土产生的高活性表面和化学活性点为其进一步深加工提供了有效途径。 The mechanical and chemical effects due to grain refinement during the preparation of ultrafine coal-based calcined kaolin were studied. The results show that ultrafine pulverization of coal with calcined kaolin particles can lead to lattice distortion and amorphization of the crystal structure of the particles, meanwhile the density of the particles decreases and the whiteness increases. Mechanical and chemical effects of coal calcined kaolin calcined kaolin produced by high activity surface and chemical active point for further processing provides an effective way.