The Birth of Rock Wool Boards

The birth of rock wool boards stems from humanity's continuous pursuit of superior building material performance. Its main raw material is basalt, a rock commonly found in volcanic areas, containing unique energy bestowed by nature. Basalt's hardness and chemical stability provide a solid foundation for the excellent performance of rock wool boards.

In the production of rock wool boards, basalt and other raw materials are first fed into a high-temperature furnace. At temperatures of 1400℃-1600℃, the basalt rapidly melts, transforming into molten lava. This process, like a phoenix rising from the ashes, gives ordinary rock a new life form. Subsequently, the high-temperature melt is spun out at high speed through a centrifuge, forming long, thin fibers. These fibers are extremely fine, typically between 4-7μm in diameter, as soft as silk. During centrifugal spinning, the fibers intertwine and dance in the air, gradually forming a cotton-like, flocculent substance-the prototype of rock wool.

To ensure the rock wool fibers bond together effectively, forming boards with sufficient strength and shape, a suitable amount of binder, such as phenolic resin, is added during the production process. This binder acts like a magic glue, tightly connecting the loose rock wool fibers and giving the rock wool board excellent structural stability. Next, the rock wool fibers are evenly laid on a conveyor belt using processes such as the pendulum method or the settling method, forming a layer of a certain thickness. The pendulum method, through the layer-by-layer stacking of the pendulum, causes the fibers to be partially vertically distributed, effectively improving the compressive strength and interlayer bonding strength of the rock wool board; while the settling method allows the rock wool fibers to accumulate naturally in a settling chamber before being pressed and cured.

After laying, the rock wool layer is sent to a curing oven for curing at a temperature of 180℃-250℃. Under high temperature, the binder quickly takes effect, firmly bonding the rock wool fibers into a whole, giving the rock wool board stable physical properties. After curing, the rock wool board still needs to go through cooling, cutting and other processes. According to different usage needs, it is cut into boards of various specifications, and finally becomes the rock wool board products we see in the construction market.