Industrial furnaces operate in high-temperature environments for extended periods, demanding high heat resistance and structural stability from insulation materials. Rock wool, made from high-temperature melted and drawn natural basalt, possesses excellent heat resistance and dimensional stability, making it widely used for external wall insulation in industrial furnaces.

Rock wool maintains a low thermal conductivity even at high temperatures, helping to reduce heat loss from the furnace and improve energy efficiency. Simultaneously, its fiber structure can absorb some sound, reducing noise during furnace operation.

During installation, it is necessary to select rock wool of appropriate density and thickness based on the furnace temperature, and to use a metal outer sheath to protect the insulation structure from mechanical damage. Care must be taken to maintain sealed gaps to prevent thermal bridging. Due to its heat resistance and stability, rock wool continues to hold an important position in industrial insulation applications.