Foundry & Molding Sands
Foundry sand needs to withstand thermal shock when molten iron, steel, or aluminum is poured (up to 1600°C). Our foundry silica sand is processed to yield high refractoriness, low thermal expansion rates, and optimized permeability to let metal gases escape safely.
Technical Parameters:
- Grain Fineness: AFS 35, 45, 55, 60, 65
- Shape: Sub-angular to rounded (minimizes binder consumption)
- Clay Residue: < 0.1% (de-clayed for maximum binding strength)
- Refractoriness: > 1700°C
Glass Grade Silica Sand
Glass purity is directly determined by the absence of iron oxide (Fe2O3) in the silica sand, which causes discoloration. Our washing plants screen out heavy minerals to deliver low-iron, high-purity glass sands optimized for containers, structural flat glasses, and glass tableware.
Technical Parameters:
- SiO2 Purity: > 99.2%
- Fe2O3 Content: < 0.04% (Low-Iron Grades)
- Al2O3 Level: < 0.25%
- Size Distribution: 30 - 100 mesh (strict grain limits to avoid melting stones)
Construction Chemicals & Epoxy Flooring
Modern construction requires dry, graded silica sand as a filler in tile adhesives, epoxy floor coatings, grouts, repair mortars, and plaster screeds. Our dried silica sand enhances structural strength, prevents shrinkage cracks, and adds anti-slip textures.
Technical Parameters:
- Moisture Content: < 0.5% (Oven Dry)
- Sizing Precision: Sieve configurations from 0.1mm to 2.5mm
- Grain Strength: High hardness index (resists wear and abrasion)
- Organic Impurity: Nil
Water Filtration Sand
Clean water filtration depends on sand with a precise uniform size coefficient to prevent packing blockages and guarantee regular flow rates. We supply washed, graded, and sterilized filter sand suitable for municipal water setups, sewage treatment plants, and swimming pool filters.
Technical Parameters:
- Effective Size: 0.4mm - 0.8mm / 0.8mm - 1.6mm
- Uniformity Coeff: < 1.4
- Specific Gravity: > 2.65
- Solubility: Acid solubility < 1.0%
Sports & Recreational Turf Sands
For athletic arenas, golf courses, and playgrounds, sand must drain water quickly and resist packing. Our washed round silica sand guarantees high permeability, keeps the ground soft, and doesn't scrape player skin.
Technical Parameters:
- Drainage Rate: High saturated hydraulic conductivity
- Texture: Non-crusting and soft sub-rounded grains
- pH Level: Neutral (safe for turf growth)
- Organic Content: Zero
