High-temperature furnaces are essential components made from various refractory materials. Examples include high-alumina brick furnaces, ceramic fiber furnaces, and foam ceramic furnaces, each serving distinct purposes due to their unique properties. High-alumina brick furnaces, crafted from high-purity alumina oxide, boast excellent resistance to high temperatures and chemical stability, ideal for industrial processes such as metal smelting and heat treatment. Ceramic fiber furnaces, made from high-temperature refractory ceramic fibers, are lightweight with low thermal conductivity, suitable for applications requiring rapid heating and cooling cycles and energy efficiency, such as laboratory sintering and ceramic firing. Foam ceramic furnaces utilize low-density, high-porosity foam ceramic materials, offering superior thermal insulation and thermal shock resistance. They are often used as insulation materials for high-temperature crucible supports and in heat treatment processes. Choosing the appropriate high-temperature furnace material is crucial to ensure stability, safety, and efficiency in high-temperature environments based on specific application requirements.