A cenosphere is a lightweight and hollow particle that contains a large amount of silica and alumina and inert gases. The particles are produced as a by-product at thermal coal power plant. The color of these fly ash particles varies from white to dark gray and their specific gravity ranges in between of 0.4 to 0.8 g/cm3 which makes the particles extremely lightweight that are suitable to use as fillers. Due to its physical and chemical properties, the particles are appropriate to use in a variety of products including insulation, sports equipment, automobile bodies, paints, marine craft bodies, and fire and heat protection devices. And as it offers great advantages like increased filled loadings, reducing weight, less shrinkage, better flow characteristics, and reduced water absorption, the demand of cenosphere exporter has extremely increased within the last few years. An appropriate set of matrix and such fillers at specific weight fractions can lead to a preferred combination of properties in syntactic foam. However, available carbon and iron contents are responsible for the quantity of the ash produced.
Composites of cenosphere:
Alulite – This is a saturated matrix complex of calcined alumina and cenosphere. It contains the inflexibility of high alumina tiles; however, it has improved thermal power for shock resistive property and is relatively light in nature. Thus, a compound strength of the composite can be increased by adding cenosphere contents to it.
Ashref – The cenosphere exporter supply the fly ash particles based refractories that are lightweight and have great thermal shock properties. Despite their relatively low cool pounding quality, they are warmed up again and again at 1100o c and cooled to 25o c without infuriating their structural integrity.
Keralite – These cenosphere-based rigid headed composites consist of an arrangement of hollow spheres and are blended at their purpose of contact. The cenosphere exporter India has stated that producing creative aptitude has been urbanized to make Keralite. However, it is extremely tough to produce such a product because of low shear resistance of the fly ash particles produced at a thermal power plant.