硅藻土是由单细胞水生藻类硅藻的遗骸和软泥固结沉积而成的一种硅质沉积岩,经过选矿、除去杂质使硅藻富积到90%以上的称为硅藻纯土。硅藻纯土具有孔隙度高、吸附性强、质轻、坚固、隔音、隔热、耐磨、耐酸和热传导性低等多种特性,可广泛应用于交通、水处理、建材、化工、橡胶、石化、医药、冶金等行业。但硅藻土在沉积过程中伴有大量泥沙,世界上的硅藻矿基本是储量多、品位低,提纯难度大,制约了硅藻土的推广应用。 Diatomite is a siliceous sedimentary rock that is formed by the consolidation of the remains of single-cell aquatic algae diatoms and the silt. After digesting and removing impurities, the diatoms are enriched to more than 90% and are called diatomite pure earth. Pure diatom has the characteristics of high porosity, strong adsorption, light weight, strong, sound insulation, heat insulation, abrasion resistance, acid resistance and low thermal conductivity. It can be widely used in transportation, water treatment, building materials, chemical industry, rubber , Petrochemical, pharmaceutical, metallurgical and other industries. However, diatomite is accompanied by a large amount of sediment in the sedimentation process. The diatomite in the world basically has many reserves, low grade and difficult purification, which restricts the popularization and application of diatomite.