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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 13
SUMMARY:Application of material and process innovations to reduce greenhouse gas emissions in steelmaking
DESCRIPTION:The steel industry produces with approx. 1,7 t Greenhouse Gas (GHG) emissions per 1 t crude steel around 10 % of all GHG-emissions worldwide. Thus, a transformation towards green steel production by replacing fossil- or carbon-based energy supply as well as feedstock by alternative resources, like renewable energy and hydrogen gas, is inevitable. However, this transformation is facing challenges since it requires significant technological changes and developments, which need expensive investments and will take around 10 to 15 years until they are completely implemented. To reduce the GHG-emissions already during this transition phase it is essential to modify individual processing steps and materials. Modifications in these process sections can be realised in short time and require low investments but can have a high impact on the reduction of GHG-emissions. Moreover, when the perspective of producing GHG-emissions is expanded beyond the borders of a local production facility onto the supply chain of input materials for steel production processes, there is an additional high potential reducing GHG-emissions. For instance, the replacement of natural resources by alternative input material with a low carbon footprint (CFP), like recycled or secondary raw material, will support lowering the GHG-emissions as well as conservation of resources. This contribution presents three possibilities to lower the GHG-emissions: The substitution of fossil coal by recycled plastic waste with a low CFP, utilization of recycled aluminium granules with a low CFP in combination with an efficient deoxidation injection method as well as innovative refractory materials, which does not contain carbon nor cement and show a higher durability in comparison to usual material. Based on various use cases within steel production considering blast furnace and electric arc furnace routes, the emission savings of the different solutions are presented.
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DTSTART:20230614T090000
DTEND:20230614T092000
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