Vermiculite chemical formula (Mg, Ca) 0.7 (Mg, Fe, Al) 6.0 [(Al, Si) 8.0] (OH4.8H2O) Vermiculite by phased into the vermiculite ore and vermiculite expansion, by color It can be divided into golden vermiculite, silvery white vermiculite, white vermiculite. Vermiculite ore roasting at high temperatures the rapid expansion of its volume can be 8-20 times the proportion of the expanded 130-180kg / m3, with strong thermal insulation properties. Construction: lightweight material lightweight concrete aggregate (light wall powder, light mortar) heat-resistant material wall materials, fire board, fire mortar, brick insulation, sound-absorbing materials insulation of underground pipes, greenhouse pipe insulation materials, Indoor and tunnel interior, walls and ceilings in public places metallurgy: coated sheet steel, iron, cast steel slag rise building cladding materials, vermiculite bulk agriculture, forestry, garden: gardening golf course lawn, seed saving agents, soil conditioners, humectants, plant growth, feed additives marine fisheries catch erbium other areas: sorbent, filter aid, chemicals and fertilizers active carrier, sewage treatment.