Cenospheres sometimes called as microspheres are widely used in variety of industry supply materials. It is lightweight and hollow sphere of silica and alumina which is a by- product of coal combustion. As these are hard, rigid, and water-proof and insulated they are widely used as fillers. Manufacturers today have started using cenospheres from India as a filling material with metals and polymers. This composition results in creation of light weight material that has a higher density.
These are naturally occurring by-product of the coal burning process. They have unique combination of low specific gravity, controlled size, and high solidity, good thermal and accountable insulating property. There color fluctuates from light black to white. These have a wide usage in many industries such as –
- Ceramic Industry
- Construction Industry
- Automotive Industry
- Energy & Technology
- Plastic Industry
- Oil Field
There properties depend on the uniformity of the coal used and the working factors of the power plant. As long as these two factors remain continuous, the cenospheres will be quite consistent. They are now wanted as an economical, lightweight grout for construction products, their rotund shape offers unified strength to concrete and polymers, their ceramic composition provides excellent insulation and flame resistance and their lightweight reduces transportation costs.
These particles are graded to smaller particles so that it matches the particle size of the materials in which it has to be mixed. These are also used as a workability enhancer due to ball bearing effect and also results in higher concrete density and strength giving better packing.
The spherical shape of cenospheres from India boosts flow capability in many applications and gives an all the more even appropriation of the caulking material. This property makes it extremely easier to use it either in dry or in wet form. Because of their latent properties, they are not swayed by solvents, water, acids, or salts. Since they are likewise supplementary total, they augment solid viscosity and superiority by giving improved pressing.