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
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Chemical analysis:
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c. 21 - 39% Al2O3, c. 54 - 65% SiO2
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Acid solubility:
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resistant against acids and alkali
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Colour:
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white to dark grey
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Particle shape:
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inert, non metallic hollow glass bubbles
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Specific weight:
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c. 0,7 - 1,0 g/cm3
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Specific gravity:
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c. 0,30 - 0,45 g/cm3
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Melting point:
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> 1200°C; non-combustible
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Thermal conductivity:
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low
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Sinking particles:
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max. 10%
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MOHS hardness:
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c. 6
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Particle size:
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0 - 500 µm, specific grain sizes
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