METHOD OF REDUCING REDOX-RATIO OF GALSS MASS AND OBTAINED THEREOF SUPERTRANSPARENT GLASS Russian patent published in 2014 - IPC C03B5/173 C03C3/87 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of reducing a glass mass redox-ratio. Sodium-calcium silicate glass for covering plates of solar collector and solar mirrors with the total content of iron lower than 0.010 wt % counted per Fe₂O₃ has a redox-ratio lower than 0.350 CeO₂ and possesses spectral properties, including transmittance in the visible area and total transmittance of the infrared range of sunlight higher than 90% with the thickness of 5.5 millimetres and reduced solarisation. The glass is obtained by heating a bath with a melt of sodium-calcium silicate glass by a mixture of combustion air and combustible gas with specific consumption of the combustion air higher than 11 or specific consumption of combustion oxygen higher than 2.31. Oxygen is bubbled through the glass mass bath. Oxygen oxidises bivalent iron to trivalent iron to reduce the redox-ratio.

EFFECT: increased transmittance and reduction of glass absorption in the visible and IR range.

13 cl, 3 dwg, 7 tbl