Current Affairs Practice Question›› General Science ››
Materials Science
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Utilization of Steel Slag
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Question 1
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Steel slag, a byproduct of steel manufacturing, can be repurposed in various industrial and environmental applications. Consider the following uses:
1. Road construction
2. Cement production
3. Thermal insulation materials
4. Ceramic manufacturing
5. Wastewater treatment
In how many of the above applications can steel slag be effectively utilized?
(a) 1, 2, 3 and 4
(b) 2, 3, 4 and 5
(c) 1, 3, 4 and 5
(d) 1, 2, 3, 4 and 5
Explanation
Recently, CSIR-Central Road Research Institute (CSIRCRRI), based in New Delhi, undertook a major Research and Development project funded by the Ministry of Steel, utilising the steel slag, a byproduct of the steel manufacturing process, for road construction.
Steel slag, a by-product of the steel-making process, is widely utilized due to its physical and chemical properties. It can be used in:
Road construction : Steel slag is used as an aggregate in road and railway track construction because of its strength and durability.
Cement production: It is used as a supplementary material in cement manufacturing to improve strength and reduce CO₂ emissions.
Creating insulation: Processed slag is used for making mineral wool, which serves as thermal and acoustic insulation.
Ceramics: Finely ground slag is used in the production of ceramic tiles and other building materials.
Wastewater treatment: Steel slag can remove phosphorus and heavy metals from wastewater, making it a sustainable treatment option.
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