Mineral fiber is obtained from mineral rocks with fibrous structure. Its main components are various oxides, such as silicon dioxide, aluminum oxide, magnesium oxide, etc. Its main source is various types of asbestos, such as chrysotile and crocidolite.
SiO2: 40-60%; Al2O3: 15-25%; Fe2O3: 3-7%;
CaO+MgO: 25-30%; Na2O+K2O: 3-6%.
