为了研究粉碎方式对煤粒度分布的影响,以侏罗纪神府煤为研究对象,采用不同粉碎设备对其进行粉碎试验。根据磨矿效率和产品的粒径分布规律提出“棒磨粗碎-气流粉碎细碎”的联合粉碎方式,磨矿过程中发生体积粉碎模型和表面粉碎模型的转换,棒磨35 min时得到分级产品粒度分布更窄,颗粒发生了选择性粉碎,达到较好的分级效果。 In order to study the effect of the crushing mode on the particle size distribution of coal, the Jurassic Shenfu coal was used as the research object and crushed by different crushing equipments. According to the grinding efficiency and particle size distribution of the product, a “crushing mill-airflow crushing crushing” joint crushing method was proposed. The volume crushing model and the surface crushing model transformation occurred during the grinding process, Grading products have a narrower particle size distribution and selective crushing of the particles to achieve a better grading effect.