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Cenosphereis a lightweight non-metallic multifunctional powder material. It has a diameter of 50-850 microns and its main component is composed of silicon dioxide (SiO2) and aluminum oxide (Al2O3). Its appearance is grayish white or gray, loose and good in fluidity. Under the microscope is a transparent silver-white spherical body, hollow, with a hard outer shell, a small amount of inert gas of N2 or CO2 inside the ball! It has fine particles, hollow, light weight, high strength, wear resistance, high temperature resistance, thermal insulation, Insulation and flame retardant and other functions, widely used in oil cementing, engineering plastics, paint coatings, insulation risers, etc.
| Color | Light Grey |
| Particle Size | Typically 5-500 mircons |
| Bulk Density (g/cm3) | 0.4-0.45 g/cm3 |
| Specific Gravity | 0.78-0.85 |
| True Density (g/cm3) | 2.1-2.3 g/cm3 |
| Moisture (wt%) | < 1% |
| Sinkers (wt%) | < 5 |
| Hardness Mohs Scale | 5-6 |
| Thermal Conductivity (W/m·℃) | 0.08-0.1 |
| Crush Strength | 140-280kg/cm2(2000-4000psi) |
| Specific Surface Area(cm2/g) | 2500-4000 |
| Refractoriness (℃) | 1500 |
| Solubility of hydrochloric acid | < 2% |
Particle Size Distribution (wt%)
| +40mesh(400micron) | +60mesh(250micron) | +100mesh(150micron) | -100mesh(150micron) |
| < 1% | < 2% | 15-25% | >70% |
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