【作者】 焦渤； 赵小虎；

【Author】 JIAO Bo ZHAO Xiao-hu (Beijing Key Laboratory for Powder Technology Research and Development,Beijing University of Aeronautics and Astronautics,Beijing 100083,China)

【机构】 北京航空航天大学北京市粉体技术研究开发重点实验室；

【摘要】 颗粒沉降特性的研究在很多方面有着重要的意义。本文中通过理论计算、实验,对球形颗粒、薄片形颗粒群的沉降特性进行了研究。并在沉降筒中开展了颗粒沉降的实验研究,观察和分析了单颗粒和薄片群的沉降特性,并将实验结果与工程经验公式计算结果进行了比较。通过研究我们发现,采用镀金属的空心颗粒或薄板形试样,能够明显降低沉降速度。更多还原

【Abstract】 It is important to study the trait of particle sedimentation in many fields.The trait of the sphere and flakes sedimentation was studied through theoretical calculation and experiment.The trait of the particle and flakes sedimentation was analyzed by experiments. Then,the experimental results were compared with the calculation results of engineering formula.And the conclusion can be drawn that it can reduce sedimentation velocity by using plating hollow particles or thin plate-shaped sample.更多还原