（1.Wuhan University of T echnology，Wuhan430070China；

2.Japan Kyoto University faculty of Engineering）

Abstract

The Mechanochemical effect and change of crystal structure in the superfine grinding process of wollastonite are investigated in this paper．T he characteristic of change about particle size （ laser diffraction analyzer ），specificsurface area （ BET adsorotion metheod ） strain of crystal structure （ effective Debye-w alles parameter-Beff ） for wollastonite in superfine grinding process is analyzed，and the polymorphic transition process from triclinic system into monoclinic system is explained．

Keywords： wollastonite； superfine grinding；mechanochemical effect；crystal structure

DOI：10.13732/j.issn.1008-5548.1999.04.005