Conveners
Primary process and preparation of the materials
- Davide Mombelli (Politecnico di Milano - Dipartimento di Meccanica)
Description
2.1.1
The transformation toward sustainable green production is focusing on hydrogen technologies and recycling of scrap.
The constraints of resources availability are known (green H2/electricity, high grade DRI, scrap volume and quality).
Therefore, the BOF process technolgoy will remain for the next 25 years the prominent technology benefitting from a couple of process advantages to overcome...
Scrap usage in steelmaking is a common practice to improve the process sustainability, as it decreases the use of virgin raw materials and boosts the circularity of the sector (decreasing CO2 emissions and energy consumption). Nevertheless, the current trend in the EU scrap market points to a slight decrease in pre-consumer scrap (E2, E6, E8, turnings..) and an increase in the short- and...
The REDERS project, which stands for "Reduced CO$_{2}$ emissions by increased recycling ratio in steelmaking processes", is a joint project of the steel producers thyssenkrupp steel Europe (tkSE) and Hüttenwerke Krupp Mannesmann (HKM) together with the recycling company TSR and the research institute BFI, which is coordinating the entire project.
The aim of the project is to increase the...
Traditionally, RH recirculatory degassers and large vacuum tank degassers use superheated steam to generate the vacuum required for their metallurgical process. The steam is supplied, as required, to a number of steam jet pumps, which can create vacuum levels of less than one mbar absolute.
Usually, the steam for these vacuum pumps is generated either from an independent package type boiler...
Increasing the energy source in BOF process and transferring it to the bath is a potential solution for fostering scrap melting, decreasing Hot Metal Ratio and thus global CO2 emissions.
Post-combustion at BOF converter is usually around 10-12%. Many developments have been done in steelmaking industry to use this potential energy, either for the management of BOF mouth opening and skull...