Basalt fiber

Basalt fibers are made from basalt by melting it and then turning the melt into fibers. Basalt is an igneous rock formed from magma that cools rapidly, leading to the formation of very small crystals. Three types of basalt fibers can be distinguished:

• Basalt continuous fibers (BCF), used for producing reinforcing materials, composite products, fabrics, and non-woven materials,
• Basalt staple fibers for manufacturing thermal insulation materials, and,
• Basalt superthin fibers (BSTF) for producing high-quality heat- and sound-insulating, fireproof materials.