TY - JOUR
T1 - Total material requirement of scrap steel from end-of-life vehicles
AU - Yamasue, Eiji
AU - Matsubae, Kazuyo
AU - Nakajima, Kenichi
AU - Daigo, Ichiro
AU - Nishihara, Keiichi
N1 - Publisher Copyright:
© 2016 ISIJ.
PY - 2016
Y1 - 2016
N2 - The concept of total material requirement (TMR) is introduced in this study in order to quantify the recyclability of scrap steel from an end-of-life (EoL) vehicle. The specific TMRs for the recycling of scrap steels (urban ore TMR, UO-TMR) from the EoL vehicle are estimated for four cases: conventional press-method, shredder and separation method, additional recycling of scrap steel from automobile shredder residue (ASR) and all-recycling using the press method. The trade-off between the increase in functionality of recycled steel (i.e., decrease in influence of copper as a contaminant) and the additional inputs, such as pig iron or nickel required for the functional improvement, were also evaluated. The estimated UO-TMR ranged between 3.7 and 4.0 kg/kg, and the factors of "material itself" and "melting" were dominant. The effect of ASR input into an electric arc furnace, as part of an all-recycling scenario, was outweighed by additional lime input and the energy needed to heat glass materials. Considering dilution by cold pig iron, the shredder and separation method appears to be the most effective, in terms of TMR. Furthermore, the effectiveness is discussed, of both the dilution by pig iron and the addition of nickel for suppressing surface hot-shortness.
AB - The concept of total material requirement (TMR) is introduced in this study in order to quantify the recyclability of scrap steel from an end-of-life (EoL) vehicle. The specific TMRs for the recycling of scrap steels (urban ore TMR, UO-TMR) from the EoL vehicle are estimated for four cases: conventional press-method, shredder and separation method, additional recycling of scrap steel from automobile shredder residue (ASR) and all-recycling using the press method. The trade-off between the increase in functionality of recycled steel (i.e., decrease in influence of copper as a contaminant) and the additional inputs, such as pig iron or nickel required for the functional improvement, were also evaluated. The estimated UO-TMR ranged between 3.7 and 4.0 kg/kg, and the factors of "material itself" and "melting" were dominant. The effect of ASR input into an electric arc furnace, as part of an all-recycling scenario, was outweighed by additional lime input and the energy needed to heat glass materials. Considering dilution by cold pig iron, the shredder and separation method appears to be the most effective, in terms of TMR. Furthermore, the effectiveness is discussed, of both the dilution by pig iron and the addition of nickel for suppressing surface hot-shortness.
KW - Automobile shredder residue
KW - Copper
KW - Dilution
KW - End-of-life vehicle (ELV)
KW - Nickel
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U2 - 10.2355/isijinternational.ISIJINT-2015-312
DO - 10.2355/isijinternational.ISIJINT-2015-312
M3 - Article
AN - SCOPUS:84984885354
VL - 56
SP - 1487
EP - 1496
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 8
ER -