Cenospheres are hollow silicate micro-spheres extracted from the fly ash generated in coal-fired power plants. They are in white or light gray color and have a particle size from 20 to 500 microns.
Chemical property
Physical index
In water:≤1%
Color:gray or gray white
Ccs:40-80Mpa
Specific gravity:0.30-0.42
Thermal conductivity:0.036-0.060w/m.k
Refractoriness:1280-1800°C
True density:0.7-0.8g/ml
Advantages:
(1) Reduced Raw Materials Cost
(2) Improved Flowability
(3) Reduced Resin Demand
(4) Improved Insulation Values
(5) Reduced End Product Weight
(6) Resistant to Resin Absorption
Features: They have excellent fluidity as well as sound,electric and heat insulation,cenospheres are a filler used to replace minerals and resins where the benefits may be as diverse as weight reduction,improved thermal insulation ,reduced shrinkage ,improved fire resistance or simply easier application.
| element | SiO2 | Al2O3 | Fe2O3 | SO3 | CaO | MgO | K2O | Na2O |
| content(%) | 56-62 | 33-38 | 2-4 | 0.1-0.2 | 0.2-0.4 | 0.8-1.2 | 0.5-1.1 | 0.3-0.9 |
Physical index
In water:≤1%
Color:gray or gray white
Ccs:40-80Mpa
Specific gravity:0.30-0.42
Thermal conductivity:0.036-0.060w/m.k
Refractoriness:1280-1800°C
True density:0.7-0.8g/ml
Advantages:
(1) Reduced Raw Materials Cost
(2) Improved Flowability
(3) Reduced Resin Demand
(4) Improved Insulation Values
(5) Reduced End Product Weight
(6) Resistant to Resin Absorption
Features: They have excellent fluidity as well as sound,electric and heat insulation,cenospheres are a filler used to replace minerals and resins where the benefits may be as diverse as weight reduction,improved thermal insulation ,reduced shrinkage ,improved fire resistance or simply easier application.