Diatomite is a diatomite deposit formed under certain geological conditions from the remains of unicellular aquatic algae. Diatomite has the characteristics of porosity, large specific surface area, low density, good adsorption, acid resistance, heat resistance, etc. Its main component is amorphous SiO2.

Diatomite filter aid is a kind of powder product made from diatomite. In industrial production filtration, it is a kind of filter aid material used to help the filtered liquid improve the filtration speed and clarification. Filtration aid: Filtration is a general physical treatment method to remove insoluble substances in liquid. As the solid substances in the liquid are often fine particles, amorphous, sticky and soft, which are easy to block the filter cloth eyelet, if filtering alone, problems such as filtering difficulties, unclear filtrate, and failure to form a filter residue layer (only forming some slurry on the surface of the filter cloth) often occur, which cannot be used in practice. Adding filter aid to the solution or pre coating a layer of filter aid on the surface of the filter cloth can significantly improve this situation. The filtering speed is fast, the filtrate is clear, the filter residue is relatively tight and can fall off from the filter cloth. Diatomite is the most commonly used filter aid in various industries.