Ceramics-Silikáty 20, (4) 321 - 330 (1976)

The study is concerned with the mechanism of activation of selected carbonates and quartz in the process of intensive grinding. A quantitative relationship was derived between enthalpy increase as a thermodynamic characteristic of the activation degree, and changes in specific surface area and the crystalline phase content. The enthalpy increase of a finely dispersed ground material as compared with an intact crystal corresponds to the energy transformed in the process of mechanical dispergation by a system of destruction processes resulting in a decrease of the degree of arrangement of solid particle structure and in an increase in the specific surface area of the dispersion system.