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Slide gate bricks are functional refractory materials used in continuous casting, widely applied in the sliding gate systems of steel ladles and tundishes in electric arc furnaces, converters, and secondary refining. They act as switches to control the flow rate and speed of molten steel, installed at the bottom of ladles and tundishes. These bricks must withstand the chemical erosion of molten steel at temperatures around 1600°C, as well as the pressure of tens or even hundreds of tons of molten steel over long periods. Therefore,Slide gate bricks are required to have high strength at elevated temperatures, excellent corrosion resistance, erosion resistance, and thermal shock resistance. Additionally, to effectively control the opening and closing of the steel flow, the sliding surface flatness, parallelism, and dimensions of Slide gate bricks must strictly meet specific requirements.