Currently, the main opacifier is zircon.Zircon crystals which formed in vitrified tiles have different refractive with glass caused light scattering, it makes vitrified tiles whiteness.

• 目前，玻化砖中乳浊剂主要采用的是锆英石，其增白机理是在玻化砖中形成硅酸锆晶体，利用硅酸锆晶体与玻璃相之间的折射率差使可见光发生散射，从而产生增白效果。