Preparation of Micropowder by a Combination of Jet-Milling and Electrostatic Dispersion  

作　　者：YIN Peng-Fei ZHANG Rong LIU Qian HU Jian-Chang LI Yin-Bing LI Ning 殷鹏飞;张蓉;刘骞;胡建昌;李银冰;李宁(Key Laboratary of Space Applied Physics and Chemistry(Ministry of Education),and School of Science,Northwestern Polytechnical University,Xi’an 710072)

机构地区：[1]Key Laboratary of Space Applied Physics and Chemistry(Ministry of Education),and School of Science,Northwestern Polytechnical University,Xi’an 710072

出　　处：《Chinese Physics Letters》2013年第9期177-180,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 51074129;the Graduate Starting Seed Fund of Northwestern Polytechnical University under Grant No Z2012151.

摘　　要：We develop a new method to prepare micropowders with a combination of jet-milling and electrostatic dispersion techniques.The dispersiveness of the powder can be obviously improved by charging the particles during the process of jet-milling.Calcium carbonate(CaCO_(3))powders with high dispersion are prepared by using this method from two different initial particle sizes(10.93 and 25.43𝜈m).The experimental studies and theoretical analysis about the effects of preparation parameter on dispersiveness of the powder are investigated,showing that the jet-milling/electrostatic dispersion(𝐾J/E𝐹)is a considerably effective way to prepare micropowder in ambient atmosphere.It is found that the strength of electrostatic field and particle radius of the raw powder strongly affect the dispersion.The average particle size of both powders decreases with the increase in charging voltage while the reduction of particle size is more obvious in the powder with larger initial particle size.

关 键 词：POWDER POWDERS particle 

分 类 号：TB3[一般工业技术—材料科学与工程]