Oil well cementingRefractory castablesThermal barrier
Hollow Ceramic Cenospheres
Ultra-Lightweight Hollow Alumino-Silicate Microspheres Resistant to 1600°C. High crush strength, low bulk density, and chemically inert — the ideal weight-reducing functional filler for oil well cementing slurries, refractory castables, and thermal barrier coatings.
Key Technical Highlights
- Bulk Density: 0.35 – 0.45 g/cm³ (ultra-lightweight)
- Crush Strength: 20 – 40 MPa (ISO 2942 compliant)
- Refractoriness: up to 1600°C
- Composition: Al2O3 28–35% | SiO2 55–65%
Technical Data Sheet (TDS)
| Specification Parameter | Typical Value |
|---|---|
| Appearance | Light gray / off-white free-flowing microspheres |
| Bulk Density | 0.35 – 0.45 g/cm³ |
| True Density | 0.60 – 0.80 g/cm³ |
| Crush Strength | 20 – 40 MPa |
| Refractoriness | 1600°C |
| Al2O3 Content | 28% – 35% |
| SiO2 Content | 55% – 65% |
| Fe2O3 Content | ≤ 3.0% |
| Particle Size | 5 – 500 μm (D50 60–150 μm) |
| Moisture | ≤ 0.5% |
Key Industrial Applications
- Oil Well Cementing Slurries: Lightweight additive reducing slurry density while maintaining compressive strength.
- Refractory Castables & Gunning Mixes: Improves insulation and reduces thermal mass in furnace linings.
- Thermal Barrier & Insulation Coatings: High-temperature resistant hollow filler for protective coatings.
- Lightweight Functional Fillers: Weight reduction for plastics, rubber, polymers, and syntactic foams.
Export Packaging & FCL Loading
- 20 kg / 25 kg PE-lined paper or PP woven bags
- 500 kg / 1000 kg FIBC jumbo bags on wooden pallets
- 20GP ≈ 18–20 t | 40HQ ≈ 24–26 t
- FOB Tianjin Port (China), ~300 km from Lingshou base
Packaging & Shipping
Packaging20 kg / 25 kg multi-wall paper bags with PE inner liner, or 1000 kg FIBC jumbo bags.
LoadingPalletized with heat-treated wooden pallets (ISPM 15 compliant) & shrink wrap.
Shipping ReferenceApprox. 18-20 MT per 20ft container (FCL).