Ceramics-Silikáty 37, (4) 187 - 192 (1993) |
|
CHANGES IN SURFACE OF DRY ACTIVATED QUARTZ AND MAGNESITE POWDERS DURING DYNAMIC AND STATIC CONTACTS WITH LIQUID ENVIRONMENTS OF VARIOUS POLARITY |
Števulová Nadežda, Tkáčová Klára |
Institute of Geotechnique, Slovak Academy of Sciences, Watsonova 45, 043 53 Košice
|
The influence of liquid environments of various polarity on the metastable states formed during dry grinding of quartz and magnesite have been investigated. The X-ray amorphous phase content and the excess enthalpy accumulated during energy intensive dry grinding remain unaffected during short-termed dispergation regrinding as well as during long-termed stirring and static storage of the activated powders in liquid environment. The changes in specific surface area depend upon: the permitivity of liquid environment, crystallochemical properties of the activated powder and conditions of their mutual contact. |
PDF (0.5 MB) |
|