RU2000106802A - METHOD FOR PRODUCING GREEN HEAT-ABSORBING GLASS - Google Patents

Claims (3)

1. The method of production of green heat-absorbing glass based on the main glass, including, in wt. %: 68-72 SiO ₂ ; 0.3-4.0 Al ₂ O ₃ ; 7-10 CaO; 3-4.5 MgO; 9-14 Na ₂ O; 0.3-1.0 Fe ₂ O ₃ ; 0.3-0.5 SO ₃ by composing a mixture of glass-forming and iron-containing components and sodium sulfate, characterized in that the mixture is additionally introduced potassium sulfate (K ₂ SO ₄ ) and a mixture of cobalt-titanium-containing components and graphite in quantities and combinations, determined by the ratio of iron oxides and providing a light transmission of glass with a thickness of 5 mm of not less than 70%, and transmission of total solar energy of not more than 50%, while glass has a maximum transmission in the wavelength range of 0.50-0.55 microns.  2. The method according to p. 1, characterized in that the potassium sulfate is introduced into the mixture in an amount of 0.3-1.5 wt. %, and a mixture of cobalt-titanium-containing components and graphite is introduced in an amount of 0.3-1.15 wt. % 3. The method according to p. 1, characterized in that FeO in the glass is formed both due to the reduction of Fe ₂ O ₃ contained in the raw materials, and due to the additional introduction of metallic iron (Fe) with its subsequent oxidation to FeO.