Product Information
- Cenospheres
Information
Cenospheres arise as light weight filler from a washing process of fly ash from coal fired power plants. The grain size of cenospheres varies from 0 – 700 µm. Specific grades, f.e. 0 – 100 µm or 100 - 700 µm, can be produced by sieving.
Specification
Chemical analysis:
|
c. 21 - 39% Al2O3, c. 54 - 65% SiO2
|
Acid solubility:
|
resistant against acids and alkali
|
Colour:
|
white to dark grey
|
Particle shape:
|
inert, non metallic hollow glass bubbles
|
Specific weight:
|
c. 0,7 - 1,0 g/cm3
|
Specific gravity:
|
c. 0,30 - 0,45 g/cm3
|
Melting point:
|
> 1200°C; non-combustible
|
Thermal conductivity:
|
low
|
Sinking particles:
|
max. 10%
|
MOHS hardness:
|
c. 6
|
Particle size:
|
0 - 500 µm, specific grain sizes
|