Refractories are specialized materials designed to withstand extremely high temperatures and harsh conditions without degrading. They are commonly used to line furnaces, kilns, and reactors in industries such as steelmaking, cement, and glass production. Refractories provide thermal insulation, mechanical strength, and resistance to chemical attack, ensuring the efficient and safe operation of high-temperature processes. These materials are available in various forms, including bricks, castables, and fibers, tailored to meet specific industrial needs.