Conveners
Energy Efficiency & Decarbonization
- Mauro Bianchi Ferri (Acciarium)
Energy Efficiency & Decarbonization
- Klaus Krüger (Ingenieurbüro Klaus Krüger)
Description
2.2.4
The steelmaking industry, as one of the major emitters of greenhouse gases, is undergoing a transformation towards greener technologies. One of the key players in this transition is the electric arc furnace (EAF), which is fed with scrap and direct reduced iron (DRI), with an increasing proportion of DRI used for high-quality steel grades. Traditionally, DRI production relies on natural gas as...
The Electric Arc Furnace (EAF) is central for steel industry transformation toward Green Steel production, with ever increasing steel production via the EAF route. However, there are still significant direct fossil CO2 emissions connected to the common EAF operation. Two techniques aimed at reducing direct fossil CO2 emissions from the EAFs are replacing Natural Gas (NG) with H2 as fuel and...
In the context of the decarbonization of the steel industry, the electric arc furnace (EAF) has emerged as a primary focus of research. Historically, the EAF has been predominantly utilized in recycling-based steelmaking, specifically for the melting of scrap materials to produce crude steel. The recent surge in research interest in the EAF is driven by the objective of optimizing resource...
Electric Arc Furnace (EAF) steelmaking is a highly energy-intensive process, with substantial heat losses occurring through off-gas emissions. flue gas emissions. The process designed based on our research proposes an advanced waste heat recovery system to enhance energy efficiency by preheating Direct Reduced Iron (DRI) before its charging into the EAF. The system utilizes a high-efficiency...
As the transition towards green steel production is progressing, the direct use of carbon in the EAF for slag foaming and slag reduction has an increasing portion of the remaining CO2 emissions for steel production. In many cases the total carbon consumption in the EAF is increasing with the increasing percentage of DRI and HBI in the charge material mix. It is therefore important to minimize...
The European steel sector is challenged by the ambitious objectives of the European Green Deal, which aims to schive climate neutrality by 2050. Therefore, novel C-lean and sustainable steelmaking processes are being investigated through large-scale pilot projects, accompanied by studies on the possibility to improve operating practices and introduce new components in conventional routes. As...
The steel industry, known for its high carbon intensity, has primarily focused its decarbonization efforts in the ironmaking phase, which accounts for 70% of the sector's total emissions. However, the steelmaking and post-processing phases, responsible for the remaining emissions, have been largely overlooked until now. These phases contribute a significant percentage of emissions that must be...
The green steel revolution in the electric arc furnace route requires a reduction in the use of fossil coal and an increase in the use of carbon-neutral sources such as biochar, polymers, and rubber. The use of these new types of alternative materials, have highlighted several aspects that must be considered to obtain a reliable and effective use for the generation of foamy slag during the...