Global Leading Diatomite Powder Exporter

Diatomite powder originates from fossilized diatom skeletons, forming a porous silica material with high surface area and low bulk density. Its intrinsic porosity enables efficient fluid absorption, filtration, and thermal insulation when processed to controlled particle grades.

Typical Technical Specifications

Values represent common production grades; specific projects may require tighter tolerances on moisture, silica content, or particle shape, which are adjustable through calcination and milling parameters.

Key Industrial Applications

• Filtration of beverages and pharmaceuticals – the uniform pore network captures particulates while maintaining high flow rates, reducing filter change frequency.
• Thermal insulation in foundry cores – low thermal conductivity and high refractoriness allow thin linings that withstand temperatures above 1000 °C without spalling.
• Absorbent for spill control – high oil uptake capacity (up to 1.8 g/g) enables rapid containment of hydrocarbon leaks on industrial floors.
• Functional filler in paints and coatings – silica reinforcement improves scrub resistance and reduces sagging without significantly increasing viscosity.
• Carrier for agrochemicals – porous structure provides controlled release of active ingredients, extending field efficacy.

Each application leverages a distinct combination of porosity, surface chemistry, and mechanical stability; selecting the appropriate grade depends on the target pore size distribution and surface treatment.

Quality Control Philosophy

Process control begins at raw material selection, where diatomite deposits are evaluated for silica purity and fossil integrity. Subsequent drying, milling, and classification stages are monitored with real‑time laser diffraction to maintain the prescribed D50 range.

Finished batches undergo loss on ignition, pH, and BET surface area tests; results are logged against statistical process control charts to detect drift before shipment. Any deviation beyond defined limits triggers reprocessing or quarantine.

Traceability is maintained through batch‑linked certificates that include test dates, equipment IDs, and operator signatures, supporting audit readiness for regulated industries.

Packaging and Shipping Options

Standard packaging includes multi‑wall paper bags with inner polyethylene liners, each containing 25 kg of product. For bulk shipments, flexible intermediate bulk containers (FIBCs) of 500 kg or 1000 kg capacity are available, equipped with dust‑proof spouts and UV‑stabilized fabric.

All pallets are stretch‑wrapped and corner‑protected to resist shifting during transit. Export documentation comprises certificate of analysis, material safety data sheet, and phytosanitary clearance where required.

Lead time ex‑works typically ranges from 10 to 15 working days after order confirmation, contingent on current production scheduling and destination customs pre‑clearance.

Frequently Asked Questions

• Can the particle size distribution be customized? Yes, milling parameters and air classification adjustments allow targeting D50 values from 5 µm to 45 µm per customer specification.
• What information is needed for a quotation? Required details include desired grade (LOI, surface area, bulk density), quantity, packaging preference, and destination port for freight estimation.
• How is product quality verified before shipment? Each lot receives a full certificate of analysis covering LOI, pH, BET, and particle size; third‑party inspection can be arranged upon request.
• Are there any minimum order quantities? Standard bagged items have no MOQ; FIBC orders typically start at 10 t to optimize handling efficiency.
• What support is available for application development? Technical staff can provide dosage recommendations, compatibility testing, and processing trials based on your formulation or process parameters.

To discuss specific grade requirements, request samples, or obtain a formal quote, please contact our technical sales team.