Abstract
Energy demand is increasing all over the world, and to fulfill this need, more energy is required to be produced. Coal power plants produce around 39% of energy, but during energy production, these coal power plants also generate waste in the form of coal fly ash (CFA). The reuse of CFA is the only solution to control this waste; fly ash can be used in different products. Therefore, this study utilizes CFA with rubber as filler materials in the rubber industry. There are different techniques (such as nozzle design technology, air classifier, and optimization of CFA to convert crushed fly ash into valuable microparticles. Treated CFA is applied to produce medium voltage insulated cables and fire resistance cables with different kinds of rubber, such as styrene–butadiene and Ethylene–propylene. The study found that by applying CFA in insulated cables, the elongation at break increased by 50%, and volume resistance 2.2 × 1016 Ω·cm, insulation resistance increased 70% by using CFA with magnesium in the recipe of insulated cables. The CFA increased the collection rate of cleaning by 30% using this technology, and product life expectancy increased by 5–20%.
Highlights
Coal is of the world’s primary source of electricity supply, demonstrating a drastic increase in its consumption
In the above-mentioned formula, the thickness of the insulated cable was 1.45 mm, tensile strength was 8.46 MPa, elongation of break was 247.65%, and VR was 2.9 × 1016 Ω cm. Another filler material was coal-based calcined high-pressure clay (CBCHPC), which was used in the above-mentioned recipe of medium voltage insulated cable
Overall results concluded that by applying coal fly ash (CFA) in insulated cables, elongation at break was increased by 50%, volume resistance 2.2 × 1016 (Ω·cm), and there was a better flame retardant effect using CFA in the insulated cable
Summary
Coal is of the world’s primary source of electricity supply, demonstrating a drastic increase in its consumption. Regardless of the current efforts to develop alternative energy sources, coal is expected to remain in the predictable prospect as the primary source of global power production, accounting for around 40% worldwide [5,6]. A ubiquitous proportion of CFA produced annually is disposed of in those countries where its production is maximum, i.e., China, India, and the US [4]. It has been disposed of for many decades by diverting the ash into landfills known as ash lagoons. 1. Treatment of CFA with different pulverization technologies to make useable nanoparticles; O2.bjecFtliyveassh applied to medium voltage insulated cables (instead of filling the main material); 75 3. TThhee ggrraapphhiiccaall ddeettaaiill ooff tthhiiss tteecchhnnoollooggyy iiss sshhoowwnn iinn FFiigguurree 33
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