抄録
Ultra fine powder was dispersed by dry dispersing operations which were Jet type, Swirling jet type and Free Suction type, and dispersed particles were collected with a prototype sampling device and clarified a state of dispersion with quantitative analysis. The dispersion efficiency and the evaluation method were studied for various supplying air pressures. It was made clear that the jet type and swirling jet type had higher dispersion efficiency than free suction type for ultra fine powders, and the prototype sampling device and the evaluation method of dispersion were effective for quantitative analysis of ultra fine powders dispersion.
