Development of supporting refractories According to the different industrial and mining conditions of the clinker rotary kiln working area, different types of anti-corruption refractories are targetedly configured, and the basic matching problem of the lining life of each working belt is considered to reduce the number of kiln maintenance visits. Each working belt is lined to achieve the purpose of having independent anti-destructive and matching cycles. The pre-tropical lining material is selected from pyrophyllite refractory bricks with good chemical stability and alkali-resistant erosion. Among them, pyrophyllite is selected from low-alkali and high-silica materials, and alkali-resistant bricks made from this raw material are both burned. Chengdu has a strong anti-alkalinity, and the intensity is also higher than that of clay bricks.
Industrial trials were completed at the Kryvç½—og coking plant and three methods of thermal repair of the coke oven furnace masonry were recommended: flame spraying; use of oxygen for ceramic welding; use of exothermic materials (heat-generating materials) Fix it. These methods have a common process principle: by means of the generated thermal energy, a protective refractory facing layer is formed on the face of the masonry to be repaired. When flame spraying is used for flame spraying, particles of the finished refractory powder melt in the flame of liquid fuel or gas fuel and are simultaneously sent to the surface to be repaired. At this time, the masonry is supplemented by the flame of the nozzle. Therefore, no special limitation on the temperature may be used in this method, and a cheaper refractory powder may be used to obtain a high-quality spray coating. The principle of ceramic welding repair method ceramic welding method is to add strong oxidants (heat release material) to the material - aluminum, silicon and so on. With the help of the oxygen nozzle flame method of wind transport, the oxidant is fed together with the refractory powder to the surface to be repaired.
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