Sweden/India: Sweden-based Cemvision has received a grant from the Swedish Energy Agency to conduct a joint feasibility study with India-based Tata Steel to transform basic oxygen furnace (BOF) and electric arc furnace (EAF) slags into feedstocks for near-zero-CO₂ cement. The 10 – 12-month study will assess the technical and economic viability of a scalable slag valorisation model, ahead of a planned demonstration facility at a Tata Steel site.
Cemvision CEO Oscar Hållén said “Being able to turn environmental liabilities into valuable resources at scale is exactly the kind of climate innovation heavy industry needs. In partnership with Tata Steel, we hope to show how steel slag can become a cornerstone in near-zero CO₂ cement, while metals are recovered and returned to steel production.”
The project is part of the India-Sweden Industry Transition Partnership (ITP), announced during the COP30 global decarbonisation summit in Belém, Brazil, in November 2025. Tata Steel also received a grant from India’s Department of Science and Technology, with additional partners including the Indian Institute of Technology’s Indian School of Mines in Dhanbad and cement producer JK Cement.
Cemvision and Tata Steel study slag-based near-zero cement
