Technical requirements for glass kiln insulation construction

Technical requirements for glass kiln insulation construction

The insulation masonry of the bottom and walls of the glass kiln is carried out in the cold state, while the insulation of the rest of the kiln is carried out in the hot state.

The key to pool bottom insulation is to prevent glass liquid from entering the bottom insulation layer. Therefore, before paving the tiles, the surroundings of the tiles must be smoothed. The gaps between bricks should not be larger than 1mm, and the expansion joints should be left in contact with the pool wall. The striking layer requires uniform thickness, smooth surface and tight contact with the paving tiles.

The pool depth is designed to be 1.2m, and the pool wall is made of 1.2m long zirconium corundum bricks. The horizontal seams are eliminated to facilitate overall thermal insulation. However, the 200mm or so below the liquid level is not insulated to facilitate cooling by blowing air. The vertical brick seams on the pool wall are not insulated, and Leave a 20~30mm gap on both sides to prevent glass liquid from seeping out and facilitate daily maintenance and inspection.

The expansion joint between each section of the molten drum is left 700mm without insulation, and the 400mm around the galvanic couple is left without insulation.

①Sealing layer: Clean the insulation area before construction, expose the original brick surface, and ensure that there is no dust in the brick joints. When constructing in a hot state, it is necessary to ensure construction quality and pay attention to safety. The thickness of the sealing mud should be uniform and the surface should be smooth. After it is heated and solidified, it will not crack or bulge, and it will bond firmly with the bricks.


②Insulation brick layer: When laying insulation bricks, the bottom surface should be in close contact with the sealing layer, and the bricks should not be arranged too tightly; but they must be neat.

③Insulation layer: Because it uses special composite insulation coating, the construction requirements are high. Professionals are required to go to the factory for construction. The construction personnel will adjust different consistencies according to different parts for application. The bonding is firm, does not crack or fall off, and has high strength, ensuring the quality of the project.

Because the thermal insulation coating is a paste with a certain density, the vertical construction of the breast wall of the clarification part and the surrounding wall of the regenerator must not be applied too thickly to prevent it from falling off. Therefore, the construction must be carried out in layers and finally smoothed.

After the furnace is insulated, the thermal efficiency is improved, the heat consumption is reduced, and energy is saved. At the same time, the quality of the glass liquid is improved, and the melting environment is greatly improved. Therefore, the glass melting furnace should be fully insulated. However, we should also pay attention to the disadvantages caused by thermal insulation, such as serious corrosion of refractory materials and an increase in hot repairs of furnaces, especially for large flat glass kilns. The insulation of the bottom of the tank will cause the risk of bricks floating on the bottom of the tank. Therefore, many factories use bottom activities. The insulation solution not only saves energy, but also ensures safe production.

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