Refractory brick is a type of brick designed to withstand high temperatures without melting or deforming. It is commonly used in furnaces, kilns, and fireplaces, where extreme heat is generated. Made from materials like alumina and silica, these bricks can endure temperatures exceeding 1,500 degrees Celsius (2,732 degrees Fahrenheit). These bricks are essential in industries such as metallurgy, ceramics, and glassmaking, where maintaining high temperatures is crucial for production processes. Their ability to resist thermal shock and chemical corrosion makes them ideal for lining high-temperature equipment, ensuring durability and efficiency in various applications.