Conveners
Hydrogen-Based Steelmaking Technologies
- Enrico Malfa (Tenova SpA)
Hydrogen-Based Steelmaking Technologies
- Ismael Matino (Scuola Superiore Sant'Anna - TeCIP Institute - ICT-COISP)
Description
5.2.1
Abstract:
The transition from solid carbon to hydrogen gas in ferromanganese production represents a transformative strategy for reducing carbon emissions in the ferroalloy industry. The HAlMan process, an innovative hydrogen-based reduction method, has advanced from laboratory-scale research to pilot-scale validation, demonstrating significant potential for decarbonizing ferromanganese...
This paper analyses the potential of ammonia in the decarbonization race within the steel industry and gives an outlook in presenting realistic, cost competitive decarbonization solutions such as the Paul Wurth EASyMelt.
Ammonia, with its high hydrogen content and established infrastructure, presents a viable alternative to pure hydrogen. The European Union's commitment to carbon neutrality...
Current heating technology is predominantly gas-fired and there is a strong drive and commitment, from the steel industry to reduce emissions in steelmaking. Resistance heating technology potentially offers unique opportunities to reduce or remove use of fossil fuels while at the same time increasing thermal efficiencies, improving the work environment and enabling delivery of a fossil-free...
By the end of 2050, the European Union aimed to decrease the carbon-based greenhouse gases (CO and CO2) considerably. It was targeted to achieve 80-95% less than the level of emissions in 1990. Hydrogen, as a clean reducing agent, can eliminate the carbon footprint from the steel industry considerably (up to 95%). However, some factors, such as the endothermic nature of H2 reduction, and the...
In the public funded project “HyInnoBurn – Industrial Gas Burners” a 450 kW prototype of a hydrogen fueled burner-injector system for use in EAF has been developed and additive manufactured in pure copper. This project is part of the German Clusters4Future initiative, supported by the German Federal Ministry of Education and Research (BMBF).
Uncertainty in the future gas supply (natural gas,...
This study investigates the effects of replacing natural gas with Hydrogen in heat treatment furnaces for stainless steel strip (both austenitic and ferritic grades). Using Hydrogen as a fuel, the vapor content in the furnace atmosphere increases, which could affect the characteristics of the oxide scale, including its composition, thickness and adherence to the base metal. Eventually changes...
The hydrogen plasma smelting reduction process is a promising technology for sustainable steel production from iron ores, utilizing molecular, atomic and ionized hydrogen as reducing agents. The reactor is a gas-tight direct-current electric arc furnace with a hollow graphite cathode for material and gas feeding. To investigate scale-up parameters, a pilot plant with a capacity of 100 kg iron...
Ferrochromium (FeCr) alloy is essential in the production of stainless steel and specialty steels. The urgency for sustainable production methods is increasing due to the rising carbon footprint. One promising solution is incorporating biocarbon as a partial substitute for coke in submerged arc furnaces (SAF), while also maximizing the recycling of iron-bearing materials, such as mill scale...
Hydrogen plasma smelting reduction (HPSR) is an emerging low-CO2 technology which can accomplish steel production from iron ore in just a single step. This is done using a high-power DC-transferred plasma arc generated between a hollow graphite electrode, which conveys the hydrogen gas into the reactor, and an iron-containing molten oxide bath. This plasma arc serves as both the primary...
R&D in SMS Group focused on the study and testing of an innovative lateral burner for reheating furnaces, able to work in flame and flameless mode, with hydrogen content in the natural gas-H2 fuel blend up to 100%vol. H2, and oxygen (O2) content in the comburent flow up to 50%vol. O2. An intensive CFD simulation campaign was conducted, with the aim of defining an optimized burner design, able...