| 摘要 |
manufacture of building materials. SUBSTANCE: after broken glass-based raw material is melted in furnace, refractory tray with molds is quickly cooled in air during 0.5 to 1.5 min, after which tray is closed by perforated refractory-steel cover and heat-insulation cover. 30- 60 min later, thermostat is opened and final cooling is performed under perforated steel cover for 45-90 min. EFFECT: up to threefold reduced total annealing and cooling time. 2 ex
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