A SILICA COATING METHOD OF POWDER PARTICLES BY WET TYPE MECHANOCHEMICAL PROCESS

摘要

Based on the circulating milling device configured twos wet-milling apparatus and the slurry cooled, the use of silica powder and water as raw materials, by using the solubility difference of the silica caused by the temperature difference between the two devices and even for most of the powder surface dense it is possible to form a silica coating. In addition to the temperature difference between the two devices to increase the solubility of silica by adjusting the slurry pH to a strong acid or a strong base or by using a silica powder of a fine size can increase the silica coating speed, a silica coating layer by further adding the silica powder in step it is possible to easily increase the thickness.