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Component- and Alloy-Specific Modeling for Evaluating Aluminum Recycling Strategies for Vehicles

Modaresi, Roja; Løvik, Amund Nordli; Müller, Daniel Beat
Journal article, Peer reviewed
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Modaresi et al 2014 - Component- and Alloy-Specific Modeling for Evaluating Aluminum Recycling Strategies for Vehicles - JOM.pdf (2.847Mb)
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http://hdl.handle.net/11250/2392269
Utgivelsesdato
2014
Metadata
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  • Institutt for energi og prosessteknikk [2624]
  • Publikasjoner fra CRIStin - NTNU [19793]
Originalversjon
JOM: The Member Journal of TMS 2014   10.1007/s11837-014-0900-8
Sammendrag
Previous studies indicated that the availability of mixed shredded aluminum

scrap from end-of-life vehicles (ELV) is likely to surpass the capacity of secondary

castings to absorb this type of scrap, which could lead to a scrap surplus

unless suitable interventions can be identified and implemented.

However, there is a lack of studies analyzing potential solutions to this

problem, among others, because of a lack of component- and alloy-specific

information in the models. In this study, we developed a dynamic model of

aluminum in the global vehicle stock (distinguishing 5 car segments, 14

components, and 7 alloy groups). The forecasts made up to the year 2050 for

the demand for vehicle components and alloy groups, for the scrap supply from

discarded vehicles, and for the effects of different ELV management options.

Furthermore, we used a source-sink diagram to identify alloys that could

potentially serve as alternative sinks for the growing scrap supply. Dismantling

the relevant components could remove up to two-thirds of the aluminum

from the ELV stream. However, the use of these components for alloy-specific

recycling is currently limited because of the complex composition of components

(mixed material design and applied joining techniques), as well as

provisions that practically prevent the production of safety-relevant cast parts

from scrap. In addition, dismantling is more difficult for components that are

currently penetrating rapidly. Therefore, advanced alloy sorting seems to be a

crucial step that needs to be developed over the coming years to avoid a future

scrap surplus and prevent negative energy use and emission consequences.
Utgiver
Springer
Tidsskrift
JOM: The Member Journal of TMS

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