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水力溢流分级在超细α-Al_2O_3粉体中的应用研究 被引量:6

Applied Study of Hydraulic OverflowingClassify on Superfine α -Al_2O_3 Powder
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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。 Hydraulic overflowing separation is a high degree of accuracy solution of powder gradation .Single-size distribution of powder can be obtained by hydraulic overflowing separation,which can be used on abrading and polishing technology. Hydraulic overflowing separation process on α-Al2O3 powder was studied. Some factors of separation process influenced the results, such as disperser, supersonic et al. The small particle phenomenon was weaken by disperser, but the size distribution was widen .Co-action of disperser and supersonic not only made mall particle phenomenon weaken, but also led a narrow size distribution.
出处 《中国粉体技术》 CAS 2006年第2期21-23,共3页 China Powder Science and Technology
关键词 水力分级 小颗粒现象 溢流分级 氧化铝 hydraulic separation small particle phenomenon hydraulic overflowing separation alumina
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