Diatomite is a kind of siliceous rock. Its chemical composition is mainly SiO2, which can be expressed by SiO2 · nH2O. The mineral composition is opal and its variants. It has some unique properties, such as: porosity, lower density, larger specific surface area, relative incompressibility and chemical stability. After crushing, sorting, calcining, airflow classification and removal of raw soil After the miscellaneous processing procedures change its particle size distribution and surface properties, it can be applied to various industrial requirements such as paint additives.
Diatomite is composed of amorphous SiO2 and contains a small amount of Fe2O3, CaO, MgO, Al2O3 and organic impurities. Diatomaceous earth is usually light yellow or light gray, soft, porous and light. It is commonly used in industry as thermal insulation materials, filter materials, fillers, abrasive materials, water glass raw materials, decolorizers and diatomite filter aids, catalyst carriers Wait.