Hebei Tianao Technology Co.,Ltd

chemical composition
The chemical composition of diatomaceous earth is mainly amorphous SiO2, which exists in the form of SiO2·nH2O, and SiO2 usually accounts for more than 80% and can reach up to 94%. Contains a small amount of Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 and organic matter, individual Cr, Ba and other metal impurities, the composition of diatomite ore is different, the content is also different.
Physical
The color of diatomaceous earth is white, off-white, gray-chemicalbook, light gray, light gray-brown, light yellow, etc.; Density 1.9~2.3g/cm3; Bulk density 0.34~0.65g/cm3; Melting point: 1650°C~1750°C; Specific surface area 19~65cm2/g; Pore volume 0.45~0.98cm3/g; The water absorption rate is 2~4 times of its own volume. It has high chemical stability, insoluble in hydrochloric acid, soluble in alkali, and has many excellent properties such as relative incompressibility, soft quality, sound insulation, wear resistance, and heat resistance.
Due to its unique physical and chemical properties, diatomaceous earth has been widely used as filter aids, functional fillers, catalyst carriers, pesticide and fertilizer carriers, thermal insulation materials, adsorbents and bleaching materials.