在线聊天
Vermiculite is a neutral and clean minerals , comes from the black mica through air-slake or hydrothermal alteration,which exfoliated(expanded) ,when rapidly heated above 1000°C.
The exfoliated vermiculite like a leech and become several times bigger that its original crude vermiculite.
Vermiculite color can vary slightly according to it’s origin .Our vermiculite color is golden brown and silver-grey .
1.Expanded vermiculite powder features
Heat-resistant, corrosion-resistant, well-ventilation, water preservation, poisonless, odorless, low hardness, burning-avoidness, lightweight .non-asbestos ,Low density etc
2.Expanded vermiculite powder size :
20-40mesh40-60mesh 60-80mesh 100mesh 150mesh 200mesh 325mesh 400mesh ect
Special size is supplier as client’s demands
3.Expanded vermicultie powder chemicals
Composition | SiO2 | MgO | Al2O3 | Fe2O3 | CaO | K2O | ph |
Percentage | 37-42 | 11-23 | 9-17 | 3.5-18 | 1-2 | 5-8 | 7-11 |
4.Expanded vermiculite powder applications
20-150 mesh: mainly used for housing insulation materials, domestic refrigeration, sound insulation plaster, piping of safe and kiln lining , retaining heat of boilers.
20-40 mesh: mainly used in automobiles, aircraft, cold storage, wallboard water cooling towers, steel annealing, fire extinguishers, filters and so on.
40-120 mesh: mainly used for oil carpets, roof panels, Dielectric disc.
120-270 mesh: mainly used for wallpaper printing, outdoor advertising, painting, fire prevention card paper for photography soft wood.
325 mesh: golden yellow and bronze, ink cartridges, fire filler.
