| 摘要 |
<p>A method is provided for making clear glass having an azure edge coloration and low amber surface coloration in a non-vacuum float glass system. The method includes processing batch materials in a non-vacuum float glass system to provide a final glass product including: SiO2 65-75 wt.%; Na2O 10-20 wt.%; CaO 5-15 wt.%; MgO 0-5 wt.% ; Al2O3 0-5 wt.%; K2O 0-5 wt.%; and a colorant portion having total iron (Fe2O3) of 0.007-0.02 wt.%, CoO of 0-5 ppm, Nd2O3 of 0-0.1 wt.%, and CuO of 0-0.03 wt.%. The glass has a redox ratio in the range of 0.3 to 0.6, and can have a retained sulfur content of less than or equal to 0.2 wt.%, such as less than or equal to 0.11 wt.%.</p> |
