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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 7
SUMMARY:Model-based evaluation of circularity efforts in the recycling of steels
DESCRIPTION:For structural applications, steel already has the best overall recycling rate of all materials - however, steel for structural components, automotive chassis and bodywork is today largely produced via the classic blast furnace route, which is still associated with high CO2 emissions for the foreseeable future. A key aspect in reducing the overall life cycle balance is the step towards the "circular economy", in which largely complete recycling is to be achieved. To this end, a holistic view of the production, usage and end-of-life processes is required.
For steelmaking this task is faced with a “scale” issue – the actual processes are highly sophisticated and detailed down to atomistic chemical reaction scale, but the overarching material and energy flows are in the kiloton / GWh regime. While for both extremes process and simulation tools are available – classical LCA for the macroscale for instance – a universal modelling tool is missing, which bridges between the detail of process simulation and measurement and the macroflows, allowing to balance all efforts and outputs in a mathematically sound and cohesive manner.
In this paper an innovative approach is presented, integrating well-established flow analysis methodology in a state-of-the-art materials knowledge system. Concrete approaches for mapping and modelling EAF steelmaking processes in terms of material and energy flows from input scraps to steel and recyclate output are presented, and concepts for bridging the scale gap are developed.
Finally, the vision of a universal communication platform based on this model and data structure for all concerned parties, from waste managers over steelmakers to producers, is established.

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DTSTART:20230615T113000
DTEND:20230615T115000
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