Gai Guosheng

（Department of Material Science and Engineering，Tsinghua University‚Beijing‚100084）

Abstract

Super－fine grinding is an important step in industrial processing．It is needed to solve the technical problem of large capacity production．It is analysed the working principle of media grinding such as ball mill‚vibrating mill‚agitator mill and classifier and the possibility to compose the closed circuit for super－fine grinding－classification－surface modification．Based on the industrial experiences‚the selection of parameters in the fine grinding of heavy calcium carbonate and its characteristics are introdiued．

Keywords：super－fine powder；super－fine grinding；classification of super－fine powder

DOI：10.13732/j.issn.1008-5548.1999.06.008