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Cement manufacturing requires limestone as a primary raw material and other raw materials such as alumina, iron ore and gypsum. The materials are mixed together in a kiln to heat them up and form a clinker. In the process, CO2 emissions are generated from the chemical conversion of limestone (known as process emissions ) and fossil fuel combustion. At JSW cement, our business model is based on the circular economy wherein we primarily substitute emission intensive clinker with Slag - a waste or a by-product from the steel industry. Since FY 09, we've prioritized the use of Blast Furnace Slag, thereby replacing clinker and reducing direct CO2 emissions. During FY 23, slag-based products (GGBS, PSC, PPC) constituted 91% of our portfolio, marking a 1.1% increase from FY 2021-22. Besides this, we also use other alternative raw materials and fuels. In FY 23, we utilized ~7.3 MT of waste-derived resources, encompassing slag, fly ash, artificial gypsum, and flue dust.
We have taken a target of reaching 10.4 Million T of waste derived resources by FY26. Additionally, we also aim to achieve 30% Thermal Substitution Rate (TSR) by 2030.
While some circularity initiatives are implemented at our integrated unit Nandyal and Shiva, others are practiced in other grinding units