CHANGES IN SURFACE OF DRY ACTIVATED QUARTZ AND MAGNESITE POWDERS DURING DYNAMIC AND STATIC CONTACTS WITH LIQUID ENVIRONMENTS OF VARIOUS POLARITY

The influence of liquid environments of various polarity on the metast able states formed during dry grinding of quartz and magnesite have be en investigated. The X-ray amorphous phase content and the excess enth alpy accumulated during energy intensive dry grinding remain unaffecte d during short-termed dispergation regrinding as well as during long-t ermed stirring and static storage of the activated powders in liquid e nvironment. The changes in specific surface area depend upon: the perm itivity of liquid environment, crystallochemical properties of the act ivated powder and conditions of their mutual contact.