摘 要：以中药三七为研究对象‚用高频振动磨进行干式超 细粉碎‚简要介绍了三七超细粉体的制备工艺过程和工艺特 点‚考察了超细粉碎过程中三七粉体的色泽变化。采用激光 衍射法分析了粉体颗粒的粒度、粒度分布及比表面积的变化 特征。 

关键词：三七；超细粉碎；粒度及分布

Abstract：Using high frequency shaked mill‚pseudo-ginseng is superfinely grinded．T he process and process feature of pseudo-ginseng powder preparation are reported．T he product color is studied in the grinding process‚and the characteristic of change about particle size‚specificsurface area and particle size distribution are analyzed by laser diffraction analyzer． 

Keywords： pseudo-ginseng；superfine grinding；particle size distribution