Authors : S. Ubale1, S. Joshi
Page Nos : 1305-1308
Description :
In India major part of electrical power is supplied through the thermal power plants (52%). Thermal power plants use coal for producing thermal energy. After burning of coal, it reduces to two types of ash, 1 fly ash and 2 bottom ash. The quantity of fly ash is huge as compared to the bottom ash. The disposal of this fly ash is a major problem. Government has taken many measures for the disposal of the ash. The ash contains silica and alumina in large proportion. Here in this work the fly ash is recycled into some value added product.
The fly ash is composed with the sodium hydroxide, calcium hydroxide and then compressed in a hydraulic press by applying different pressures. The resultant is allowed to dry. Very hard discs are prepared. The density and thermal conductivity of the discs are measured. It is found to be a bad conductor of heat. The density of the samples shows variation in density and thermal conductivity with change in the applied pressure.
