Mumbai Tata Steel Teams With Cemvision To Produce Sustainable Cement From Steel Slag
Mumbai Tata Steel has joined forces with Cemvision to transform steel production waste into sustainable building materials. The collaboration targets Basic Oxygen Furnace (BOF) and Electric Arc Furnace (EAF) slags, converting them into high-performance, near-zero-carbon cement while recovering metals for reuse in steelmaking. Supported by grants from the Swedish Energy Agency and India’s Department of Science and Technology, the initiative aims to develop a scalable, circular model that could reduce industrial emissions and create a more resource-efficient construction supply chain.
The project reflects a growing push in heavy industry towards decarbonisation and industrial symbiosis. Globally, the cement and steel sectors contribute more than 15% of CO2 emissions, with steel production generating millions of tonnes of slag annually. Traditionally, much of this by-product is either landfilled or used in low-value applications. Cemvision’s technology upgrades these materials, turning them into critical inputs for next-generation cement, while metals such as iron and vanadium are recovered and returned to steel production.The joint feasibility study, expected to run for ten to twelve months, will assess technical, economic, and operational viability, laying the groundwork for a demonstration facility at Tata Steel’s site. Industry experts suggest that the project could become a model for circular industrial processes, showing how steel waste streams can feed into sustainable construction materials. “This collaboration demonstrates the potential to turn environmental liabilities into valuable resources at industrial scale,” said Oscar Hållén, CEO of Cemvision.
For Tata Steel, the initiative aligns with broader net-zero ambitions and operational efficiency goals. Subodh Pandey, Vice President – Technology, R&D, NMB and Graphene at Tata Steel, explained: “By integrating Tata Steel’s operational expertise with Cemvision’s innovation in slag modification, we can produce low-carbon cement while creating additional value from by-products. This is a tangible step toward a circular, resource-efficient industrial ecosystem.”The project forms part of the India-Sweden Industry Transition Partnership (ITP), under the Leadership Group for Industry Transition (LeadIT), highlighting international cooperation in decarbonisation. Additional collaborators, including IIT ISM Dhanbad and J K Cement, are contributing research and technical expertise to ensure the model is scalable and replicable across other industrial regions in India. Per Andersson, Head of the LeadIT Secretariat, noted the partnership exemplifies modern industrial collaboration, combining global leadership, technological innovation, and public support to advance sustainable practices in the cement and steel sectors.
As Indian cities continue to grow, sustainable construction materials will be critical to reduce urban carbon footprints. The Tata Steel–Cemvision project not only addresses industrial emissions but also illustrates how circular economy principles can generate economic and environmental value simultaneously, creating pathways for greener, more resilient urban infrastructure.
