Calcined Kaolin is a kind of super white alumina silicate bulking filler.After being calcined, it has finer particle size and higher radius-thickness ratio, which can afford excellent xero-opacity and outstanding tinctorial power in coating. Therefore, it is also usually applied to replace titanium dioxide partly for lower costs. In hydrous and oily series, especially in the case of high requirement of product's brightness, it is applied as functionality additive to coating, ink, adhesive, plastic and other industries.