In electric arc furnaces typically fossil coal in form of petrol coke or similar is used to create slag foaming in the refining phase. This is responsible for roughly 5-10 % of total CO2-emissions in electric steel production, which means potential savings of 30–60 kg CO2/t steel if carbon neutral sources are applied.
Therefore, a fundamental investigation of the reaction behaviour of...
The steel industry faces increasing pressure to decarbonize while maintaining reliability, cost competitiveness, and product quality. While electrification and hydrogen play important long-term roles, many steel plants still depend on high-temperature thermal processes where fossil natural gas remains dominant. This creates an urgent need for scalable, renewable alternatives that can be...
This study aims to evaluate the natural CO2 absorption potential of steelmaking slag, focusing on both black (EAF) and white (LF) slag generated during steel production. Such slags contain significant amounts of calcium and magnesium compounds capable of reacting with atmospheric CO2 through carbonation, forming stable carbonates and thereby enabling permanent carbon sequestration....
Foamed slag technology is the core process of ultra-high-power electric furnace steelmaking, which is crucial for enhancing thermal efficiency, protecting furnace lining and optimizing molten steel quality. This paper takes biomass charcoal as the research object, systematically analyzes its performance and influencing factors as a blowing agent, and compares it with traditional fossil-based...
Utilizing biochar in electric arc furnace (EAF) steelmaking has become a crucial step towards reducing fossil CO2 emissions. The present research examines the interaction between V2O5 and TiO2-containing EAF slag and pinebark-derived biochars, which were pyrolyzed at two different temperatures (600 °C and 800 °C). Optical dilatometry (OD) and thermogravimetry (TG) studies, supported by X-ray...