-
Vermiculite flake
Vermiculite is a silicate mineral, which is a mica sub-organism. Its main chemical composition: 22MgO · 5Al2O3 · Fe2O3 · 22SiO2 · 40H2O The theoretical molecular formula after roasting and expansion: ( OH) 2 (MgFe) 2 · (SiAlFe) 4O104H2O
The original ore vermiculite is a layered structure with a small amount of water between layers. After heating at 900-950 ℃, it can be dehydrated, bursted and expanded to 4-15 times the original volume , forming a porous light body material. It has thermal insulation, high temperature resistance, insulation, antifreeze, earthquake resistance, acid and alkali corrosion resistance, sound insulation and other properties.
