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Refractory materials for glass furnaces

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Refractory materials for glass furnaces

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There are three key drivers behind the evolution of refractories: maintaining improved glass quality; economic requirements on glass kilns to make kilns run longer and impact after pure oxygen combustion systems.
The word "current" can be read in months or even weeks as the computer industry in the electronics industry changes. When it comes to the development and application of refractories in the glass industry, it can easily be read as five or ten years. Based on this notion of time, we will recall that there has been a change in the discussion of the "current" area (more conservatively) in the latter area.
There are three major driving forces behind the development of refractory materials. The first glass manufacturer typically needs to improve glass quality in order to maintain it at least. The second glass kiln economy required a longer kiln operation cycle and a third pure oxygen combustion system with impact. These three requirements usually determine the choice of improved refractories when repairing the kiln. These impetuses have also prompted the glass manufacturer to use the furnace with improved fire-resistant products for maintenance and repair, as well as the introduction of new technologies for a wide range of maintenance runs.
Melting-cast alumina bricks have been melting pool top this part of the establishment of its application, the main melting high-quality glass pure oxygen combustion furnace was applied. Prior to the advent of pure oxygen combustion technology, only beta alumina bricks were used to melt pool superstructure and no melt cast alumina bricks were used on top of the melting pool. Today, both β-alumina and α-β alumina melt-cast products are used to produce color TV (screen cone), float glass and borosilicate glass pure oxygen combustion furnace some or all of the roof. Melt-cast AZS bricks can typically be used at 1600 ° C or 1650 ° C (depending on the glazing), while furnace tops with fused alumina are successfully operated at 1700 ° C. This gives glass manufacturers greater flexibility when creating refractory glass.
For many years, melt-cast AZS roofs have successfully undergone a cooling and reheating test to enable them to use multiple operating cycles. There is now a bit of experience in the successful implementation of top cooling and reheating of fused-alumina roofing, demonstrating an economically viable life when they use two or more cycles of operation. The results of fused alumina furnace roof observation (thermal observation and shutdown) show that these materials are both chemically and mechanically stable. This was the earliest observation of this type of masonry study since there was neither a fused alumina reference nor the empirical basis of its roof application.
High-chromium refractory products used to be mainly used to enhance the glass furnace, and a small amount used in insulation glass pool furnace. High chrome bricks are increasingly being used by some soda lime glass furnaces. Its main use has not only been limited to all or part of the flow hole, but also for the end wall and to a limited extent for the filler brick. For high chrome brick components, they are potentially dangerously colored, so that high-chromium products are often not compatible with very "white" glass. In the initial period this product was mainly used for colored glass, but high chromium products have also been successfully used in transparent container glass furnaces. The use of high-chromium glass furnaces depends largely on the design of the liquid hole, the cooling of the liquid hole, the daily production of the furnace, and the operation of the furnace. A glass manufacturer may use high-chrome bricks for the entire cover plus the melting tank end wall. High Chromite brickwork liquid caves offer the potential to increase kiln life because this material provides at least twice as much resistance to most glass as molten AZS bricks. However, some design parameters differ from those of fused AZS bricks and need to be discussed with the supplier.

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