Research project In this project, lime utilization is optimized in an overall perspective, from mineral via slag to concrete, in the production of fossil-free steel.
The aim of the present project is to optimize lime utilization in an overall perspective, from mineral via slag to concrete in the production of fossil-free steel. Significant reduction in CO2 emissions can be obtained by replacing slag and its lime content as primary raw materials in cement and concrete production. Slag from the new iron/steel processes with hydrogen reduction and EAF melting will require modification to be included as a substitute for cement in concrete.
Project budget 20.0 MSEK. Funded by Energimyndigheten, LKAB Minerals AB, Höganäs Sweden AB, H2GS Boden AB/STEGRA AB, Föreningen Mineralteknisk Forskning MinFo, Nordkalk AB, Heidelberg Materials Cement Sverige AB and Ovako Bar AB.
Research including theoretical calculation, modelling, lab and industrial tests, aims to establish basic mechanisms and develop industrial processes. The overall goal is that lime slag formers are recycled in the form of mineral additives (SCM) in cement with the potential to reduce CO2 emissions by 400 kton/year in Sweden within a 5-year period.
Cooperation between research institutes, universities and industries enables industrial symbiosis where mineral raw materials are used optimized production of green steel and cement.
