关键词: 颗粒层, 破碎, 能量吸收, 破碎比

Abstract: In rigid metal containers, that is piston pressure equipment, experimental study on compression crushing of granular layer is carried out. Compression crushing process of loose granular layer at different maximum pressure, different thickness and different particle size are tested to obtain the restoring force-displacement curve of granular layer and the particle size distribution curve and to analyze different impact rules of curves on crushing. After further experiments, the relationship curve of energy absorption with the displacement, pressure intensity and the influence curve of energy absorption and particle size on crushing ratio are established. Through comparative analysis on the curves above, it is concluded that energy absorption is the most important factor for crushing ratio. The energy absorption can impact directly on the crushing effect of particles.

Key words: Granular layer, Crushing, Energy absorption, Crushing ratio