Chemical Properties
| Silica |
-65% |
| Alumina |
25%-35% |
| Iron Oxide |
l%-5% |
| Titania |
-1.5% |
Physical Properties
| Size |
10-350 microns |
|
pH in Water 6.0-8.0 |
| Density |
23-28 lbs.
per cubic ft. |
| Gravity |
0.6-0.8 |
| Strength |
3000 - 5000
lbs, per square in. |
| Softening Point |
1800 degrees
F |
| Shape |
Spherical |
| Color |
Grey - Light
Grey - Off White |
| |
Ceramics
Refractories, Castables, Ceramic Tiles, Fire Bricks, Aluminium
Cement, Insulating
Materials, Coatings |
| |
Plastics
BMC, SMC, Injection Moulding,Moulding, Extruding, PVC Flooring,
Film, Nylon, High Density Polyethylene, Low Density Polyethylene,
Polypropylene |
| |
Construction Speciality Cements, Mortars,
Grouts, Stucco, Roofing Materials, Acoustic Panels, Coatings,
Shotcrete, Gunite |
| |
Recreation Marine Craft, Flotation Devices,
Bowling Balls, Surf Boards, Kayaks, GolfingEquipment, Footwear,
Lawn & Garden D└cor |
| |
Composites, Undercoatings, Tyres, Engine Parts,
Brake Pads, Trim Moulding, Body Fillers, Plastics, Sound Proofing
Materials |
| |
Energy & Technology Oil Well Cements,
Drilling Muds, Industrial Coatings, Grinding Materials, Aerospace
Coatings & Composites, Explosives, Propeller Blades |
Cenospheres are hollow ceramic microspheres found in fly ash, a
natural by-product of coal combustion during the generation of electric
power. Small and hollow, micropheres are used as fillers or functional
extenders in the manufacture of plastics, paints, resins; light
weight aggregates for cement, ceramics and other construction products.
Because cenospheres often replace mined materials, they can significantly
lower production costs. Simultaneously, cenospheres can benefit
finished product properties by increasing durability and better
sound proofing. Too, as material recycled from flyash, cenospheres
are environmentally friendly and help to preserve natural virgin
fillers.
As a portion of the flyash generated in coal combustion, cenospheres
are recycled from the waste stream. They are made up of inert silica,
iron and alumina. Cenospheres have a size range from 1 to 300 microns
with an average compressive strength of 3000+ psi.. Colors range
from white to dark gray. They are also referred to as microspheres,
hollow spheres, hollow ceramic microspheres, microballoons, or glass
beads.
The spherical shape of cenospheres improves flowability in most
applications and provides a more even distribution of the filler
material. The natural properties of cenospheres make it possible
to use them either in dry or wet slurry form. Cenospheres are easy
to handle and provide a low surface area-to-volume ratio. Due to
their inert properties, they are not affected by solvents, water,
acids, or alkalis, cenospheres are 75% lighter than other minerals
currently used as a filler or extender and are 30% lighter than
The mainly advantages of using cenospheres including:
(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 |
