الوصف
Cenosphere are hollow ceramic microspheres found in fly ash, a
natural by-product of coal combustion during the genernation of
electric power. Small and hollow, microsphere are used as filler
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. Cnospheres have a size range
from 1 to **0 microns with an average compressive strength of
***0+psi…Colours range from white to dark gray. They are also
referred to as microspheres, hollow spheres, hollow ceramic
microspheres, microballons, 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*5%lighter than minerals
currently used as a filler .
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
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