CRYSTALLIZED GLASS FOR BUILDING MATERIAL HAVING NATURAL MARBLY PATTERN AND MANUFACTURING METHOD THEREOF

摘要

In the crystallized glass of the present invention, sodium sulfate is used as a cleaning agent, and by weight percentage, 45 to 77% SiO ₂ , 1 to 25% A1 ₂ O ₃ , CaO 2 to 25%, ZnO 0 to 18%, and BaO 0 to 20% , Na ₂ O 1-15%, K ₂ O 0-7%, Li ₂ O 0-5%, B ₂ O ₃ 0-1.5%, CeO ₂ 0.01-0.5%, SO ₃ 0.01-0.5% The glass raw materials so combined are melted and molded, and then crystallized. The crystallized glass of the present invention does not contain As ₂ O ₃ and Sb ₂ O ₃ , but is excellent in solubility and has good production efficiency, and has a whiteness equivalent to or higher than that of a conventional product.