| 摘要 |
The red crystallized glass for building material is manufactured by preparing the glass compsn. of 45-70 wt.% SiO2, 5- 10 wt.% Al2O3, 10-20 wt.% CaO, 5-12 wt.% ZnO, 1-5 wt.% B2O3, 0.5- 5 wt.% Na2O, 0.5-5 wt.% K2O and 0.1-3 wt.% Sb2O3, adding 0.1- 2.5 wt.% S7C12, 1.5-2.5 wt.% C and 0.1-2.5 wt.% Cu2O as the coloring agent, melting in a electric furnace, making a small body, taking in a refractory mold, heat-treating to color with their metal colloid in a electric furnace, and water-quenching.
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