| 摘要 |
A composition useful for the top layer of two-layered stoneware or semi-stoneware tiles has, with or without added coloring substances or pigments, the following composition: -Clay (white burning)13-40%by weight,-Wollastonite0-25%by weight,-Potassium feldspar8-32%by weight,-Sodium feldspar5-15%by weight,-Lithium feldspar0-12%by weight,-Nepheline-Syenite3-15%by weight,-Frit0-25%by weight,-ZnO0-5%by weight,-Calcined kaolin/clay6-24%by weight,-Calcined aluminum oxide3-16%by weight, and-ZrSiO40-10%by weight.-
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