Refractory materials are specialized substances with exceptional resistance to high temperatures, mechanical stress, and chemical erosion. These materials are designed to withstand extreme conditions in industrial processes such as furnaces, kilns, and reactors where ordinary materials would quickly deteriorate. Refractories are commonly used in industries like steel, cement, glass, and petrochemicals, where they serve as linings or protective barriers against intense heat, corrosive substances, and abrasive materials. They are formulated to maintain their strength, shape, and thermal insulation properties even at temperatures exceeding 1,000 degrees Celsius. With their unique ability to withstand harsh environments, refractories play a critical role in ensuring the longevity, efficiency, and safety of high-temperature industrial operations.

In Latin languages, the term Refractory can mean “resistant”.