Crystallized glass for building materials with natural marble pattern and its manufacturing method

摘要

The crystallized glass of the present invention uses sodium sulfate as a detergent, and by weight percentage, SiO ₂ 45-77%, Al ₂ O ₃ 1-25%, CaO 2-25%, ZnO 0-18%, BaO 0-20% , 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.