Method for producing ultra fine particles

摘要

A method for producing ultra fine particles is disclosed, wherein the method includes wet grinding particles with a media agitation mill, wherein ceramic particles having an average diameter of about 300 mu m or smaller are used as grinding media in the media agitation mill. Desirably, the media has an average particle diameter standard deviation of 15 or smaller, a sphericity of 1.07 or smaller, and a density of 6.0 g/cm3 or more.