METHOD OF COOLING MOLTEN GLASS AND COOLING TANK FOR GLASS MELTING FURNACE

摘要

PURPOSE:To absorb remaining bubbles in a material effectively while shortening a cooling time extremely, by annealing molten glass approximately at a temperature where the average temperature of the molten glass is a temperature to show the highest absorption rate of bubbles, and quenching it in a temperature range except it. CONSTITUTION:The resolving tank 12 is provided with the feed opening 13 for raw material, the heat storage chambers 14 are set at both the sides of the resolving tank 12, and they are connected to the nozzles 15.... Flame obtained by burning a heavy oil is produced from the nozzles 15..., raw materials are melted, and a glass material is accumulated in the resolving tank 12. The raw materials receive heat at least at 1,500 deg.C for =30min, and the raw materials at about 1,500-1,550 deg.C flow into the cooling tank 17. In the sections 17a, 17b, and 17c, the sections 17a and 17c are forcedly cooling sections, and the section 17b is a naturally cooling section. Consequently, molten glass is quenched in the sections 17a and 17c, and annealed in the section 17b.