Diatomaceous Earth (DE) is a naturally structured functional mineral formed from ancient diatom fossils. Recognized as “Nature’s Filter”, its unique microporous structure provides superior performance beyond traditional fillers, supporting filtration, insulation, reinforcement, and adsorption across industries.
1. Geological Background and Microstructure
Diatomite deposits are composed of amorphous silica skeletal remains. SEM imaging reveals a regular porous network with uniform holes and multi level channels. This structure delivers high permeability, large specific surface area, and pressure resistance in industrial environments.
2. Key Performance Parameters
- Pore Structure: Specific surface area 30–70 m²/g for strong absorption capacity.
- Filtration Performance: Adjustable Darcy values to balance filtration speed and clarity.
- Thermal Stability: Stable up to 1400–1650°C for high temperature applications.
- Insulation Property: Low thermal conductivity due to hollow porous structure.
- Polymer Reinforcement: Improves modulus, rigidity, and dimensional stability in plastics and rubber.
3. Major Application Fields
3.1 Industrial Filtration
Purification of chemical solutions, metal finishing liquids, waste oils; critical in biopharma for high purity separation of serum, vaccines, and fermentation products.
3.2 Construction Material Enhancement
Lightens concrete while boosting thermal insulation and fireproofing. Improves cement mortar strength and service life as a pozzolanic component.
3.3 Coatings and Plastic Functional Agents
Provides precise matting effects in architectural and industrial coatings. Prevents blocking in plastic films during processing and storage.
3.4 Eco Friendly Treatment
Adsorbs and removes heavy metals from industrial wastewater through physical and ionic mechanisms.
4. Grade Selection Guide
- Natural Grade: Best for agricultural applications and pest management.
- Calcined Grade: Suitable for general industrial filtration and filling uses.
- Flux Calcined Grade: Highest purity and flow for demanding filtration systems.
5. Quality and Supply Strengths
High amorphous SiO₂, low crystalline silica, meeting international health standards. Consistent particle size ensures batch to batch stability. Certified with ISO9001, RoHS, REACH, and supported by patent and audit certificates.
