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Abstract
Indian cement industry is rated as one of the best performing industry across various industrial sectors in terms of energy efficiency, quality control, environmental sustainability and adaptive in venturing into new technology. Indian cement industry is contributing to circular economy primarily by (i) Circular Supply Chain, (ii) Recovery and Recycling. Waste from various industries is being utilized by the cement industry as alternative fuels and raw materials (AFR). As cement manufacturing process itself supports the environmentally sustainable waste utilization due to high temperature incineration without leaving any residue, hence it is acting as backbone for waste generating industries. National Council for Cement and Building Materials (NCB) being a leading R&D organization in the field of Cement and Building Materials in India is working to support the cement industry to enhance the waste utilization and sustainable manufacturing for clean and green India. This paper highlights the efforts of Indian cement industry, contribution of NCB towards circular economy and futuristic potential.
Highlights
India is among world’s fastest growing economy showing resilient to external factors
Thermal Substitution Rate (TSR) is part replacement of conventional fuel by alternative fuels in terms of thermal energy requirement and is calculated as percentage of heat supplied by alternative fuel from the total heat requirement for pyro-processing in a cement plant. % TSR has improved to 4% as compared to a dismal 1% only 3–4 years back
NCB has carried out several studies on composite cement wherein combinations of fly ash and granulated blast furnace slag were used for preparing composite cement blends
Summary
India is among world’s fastest growing economy showing resilient to external factors. The economies of scale have predominantly taken over the narrative around resource use leaving principles of circularity and resource efficiency in the background. Circular economy is emerging approach, which can take the country to newer heights without straining the resource supply. Any kind of underutilization of resources or assets rather than its interpretation as junk material (https://niti.gov.in/writereaddata/files/E-WasteStrategy.pdf). (i) Circular Supply Chain; Provide renewable energy, bio-based or fully recyclable input material to replace single-lifecycle inputs, (ii) Recovery and Recycling; Recover useful resources/energy out of disposed products or by-products, (iii) Product Life Extension; Extend working lifecycle of products and components by repairing, upgrading and reselling, (iv) Sharing Platform; Enable increased utilization rate of products by making possible shared use/access/ownership, (v) Product as a Service; Offer product access and retain ownership to internalize benefits of circular resource productivity (https://Circular%20economy/FICCI-Circular-Economy.pdf). Indian cement industry being one of the second largest cement production after China with an installed capacity of 509 MTPA (million tonnes per Annum) in 2018 is constantly contributing for the circular economy of India by various means and this paper highlights Indian cement industry gains through circular economy as well as future potential (https://pib.gov.in/Pressreleaseshare)
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