The selection of boiler refractory bricks should be based on the working conditions of specific parts, and comprehensively consider factors such as material wear resistance, high temperature resistance, peeling resistance, thermal conductivity and material fixing method. Most of the parts that are useful to boiler refractory bricks belong to the special-shaped structure and are assembled bricks, which require high compressive strength and high temperature performance.
How to choose refractory brick in boiler:
Because the damage of the boiler lining mainly includes peeling and wear, and the main reason for the peeling is the thermal stress caused by the frequent start and stop of the boiler: Therefore, wear-resistant series boiler refractory bricks, such as silicon carbide wear-resistant, should be used. Bricks, phosphate wear-resistant bricks, etc., if high temperature performance is required, the content of impurities that are easy to form eutectic such as Na2O, K2O, Fe2O3, TiO2, etc. should be strictly controlled: for parts with large temperature fluctuations, the material is required to have excellent resistance Thermal shock performance.
Refractory bricks in boiler requirements:
Refractory bricks in boiler isolate the flame burning in the boiler and each heating surface from the outside world, so the refractory bricks used are required to have heat resistance. Hook bricks, bracket bricks and other special-shaped models
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