Methods for manufacturing transparent glass, methods for forming transparent glass, and glass composition

Abstract

The invention proposes a glass coating of a soda-silica glass composition with a high visible light transmittance (Ltc) of at least 89%; with a dominant wavelength (DW) of approximately 490 to 505 nanometers and a purity (Pe) of no more than 1% for a control thickness of 5.66 mm, and methods for its fabrication. This glass composition consists of low-iron raw materials, total iron oxide (Fe₂O₃) from 0.02 to 0.06% by weight, iron (II) oxide (FeO) from 0.006 to 0.02% by weight, redox (FeO / Fe₂O₃) from approximately 0.30 to 0.55; Cr₂O₃ from approximately 0.3 to 10 ppm, TiO₂ from approximately 50 to 500 ppm; Sulfate (SO₂) from approximately 10 to 500 ppm and a critical amount of SO₂ from approximately 0.10 to 0.25% by weight. Low iron oxide content is achieved by partially replacing conventional raw materials with low-iron content raw materials, and completely replacing conventional dolomite with low-iron dolomite with a maximum Fe2O3 content of 0.020% by weight.