Дослідження експлуатаційних характеристик теплових печей при виробництві оптичного та спеціального флоат стекол

Abstract

The relevance of the study of the performance characteristics of refractory materials and the constructive features of thermal units the design in the production of optical and special float glasses was shown.The current state of the thermal regimes of baths and regenerative furnaces and the existing methods for determining the weak nodes of thermal furnaces were analyzed. For this goal the modern diagnostic equipment was used. The nature of the destruction of baddeleyite-corundum refractories of a glass-melting furnace during the production of sheet float glass for a long time has been established by using the results of petrographic studies. Statistical data on the influence of raw materials which are part of the source charges on the physical destruction of the refractory surface are presented. It was found that the composition of the glass affects the nature of the destruction of refractory materials. The importance of taking into account the tolerances for thermal expansion during the overhaul of a regenerative pot furnace has been proved. The influence of flame flow on the efficiency of the furnace is revealed. For this aim the design of the gas windows has been redesigned. The dependences of the corrosion of the bath walls on temperature in the most aggressive zones of the bath furnace have been investigated. The main types of optical glasses by chemical composition, which are the most aggressive to the furnace environment, were determined. In addition to the chemical composition of glass, technological modes of its production are also important. An important point is the placement of temperature sensors for the correct analysis of thermal loads on refractory materials. Modification of the regenerative furnace was carried out for further efficient and economical glass production. The results of industrial tests and implementation of the developed methods for the production of high-quality optical and special float glasses, taking into account the increased service life were presented. The main and perspective directions for the development of this topic have been determined.