【摘要】 水力溢流分级精度较高,是目前常用的超细颗粒分级方法,通过溢流分级,可以将研磨后的粉体分级成为某一特定粒度分布的粉体,以适应研磨抛光等行业对粒度分布的要求。通过水力溢流分级,研究了分散剂、超声波等因素对超细α-Al2O3水力分级的影响,结果表明,分散剂虽然可以消除分级过程中的小颗粒现象,但是也对分级结果产生负面影响,使分级后的产品粒度分布变宽;加入分散剂,同时超声处理后样品可以得到较好的分级结果,分级后的粒度分布较窄。更多还原

【Abstract】 Hydraulic overflowing separation is a high degree of accu-racy solution of powder gradation .Single-size distribution of powdercan be obtained by hydraulic overflowing separation,which can be usedon abrading and polishing technology. Hydraulic overflowing separa-tion process onα-Al2O3 powder was studied . Some factors of separa-tion process influenced the results, such as disperser, supersonic et al.The small particle phenomenon was weaken by disperser, but the sizedistribution was widen .Co-action of disperser and supersonic not onlymade mall particle phenomenon weaken, but also led a narrow sizedistribution.更多还原