Diatomite, also known as diatomaceous earth, belongs to biogenetic non‑metallic mineral formed by fossil remains of ancient diatoms. Its major constituent is amorphous silicon dioxide, accompanied by aluminium oxide, iron oxide and trace mineral components. The material possesses abundant interconnected micropores, large specific‑surface‑area, low bulk density, outstanding adsorptive capacity, chemical inertness, sound‑insulating and heat‑insulating property, together with non‑toxic characteristics. It conforms to domestic industry specification and REACH, RoHS export‑related standards, and finds wide‑ranging usage in liquid filtration, waste‑gas adsorption, functional fillers, green building materials, agriculture‑and‑feed additives.
The processing workflow consists of raw‑ore crushing, drying, calcination, milling and particle‑size classification. Three mainstream grades include natural uncalcined diatomite, calcined diatomite and flux‑calcined diatomite. Premium‑grade finished goods keep intact diatom shell structure, uniform pore diameter and low iron‑containing impurities. In the filtration sector, it serves as the essential filter‑aid for edible‑oil, wine, fruit‑juice, syrup and industrial solvent, removing fine suspended particles and improving liquid clarity. For environmental‑protection applications, the porous framework absorbs formaldehyde, peculiar smell, ammonia‑nitrogen and heavy‑metal pollutants in sewage and indoor‑air. When applied to construction materials, it manufactures breathable wall materials, heat‑insulating boards and paint filler for humidity adjustment and harmful‑gas decomposition. Within agriculture and breeding industries, it acts as anti‑caking additive, pesticide carrier and physical insect repellent.
Major quality‑testing parameters cover silicon‑dioxide proportion, porosity, specific surface area, whiteness, moisture content, particle mesh size and heavy‑metal content. Our enterprise supplies multiple mesh specifications and customized granular products. We offer sample inspection, formulation consultation and stable bulk supply for domestic clients and overseas trade buyers.
