TY - CHAP

T1 - Life cycle assessment (LCA) of a novel solid-state recycling process for aluminum alloy AA6063 chips via direct hot rolling

AU - Carta, Mauro

AU - Ben Khalifa, Noomane

AU - Buonadonna, Pasquale

AU - Mele, Alessandro

AU - El Mehtedi, Mohamad

N1 - Publisher Copyright: © 2024, Association of American Publishers. All rights reserved.

PY - 2024

Y1 - 2024

N2 - Aluminum utilization has been growing in the last decades thanks to its high strength to weight ratio, corrosion resistance, excellent plasticity, and good weldability. Recently, unconventional processes have been developed for aluminum recycling, called Solid-State Recycling (SSR), by avoiding melting process, allow to save up to 85% of energy needed for secondary aluminum production. The aim of this study is to assess the environmental advantages of a novel recycling technique namely Direct Hot Rolling process. This innovative solid state recycling process will be evaluated for its eco-friendliness. The Life Cycle Assessment (LCA) analysis follows a gate-to-gate approach: collected chips coming from prior cutting process are cold pressed and subsequently hot and cold rolled to obtain the functional unit, defined as the sheet produced through Direct Rolling of 35g of AA6063 chips. Primary data come from direct measurements provided by an industry plant operating in aluminum production field and direct measurements taken during the experimental activity in laboratory. Secondary data were provided by studies available in literature and SimaPro® databases. This LCA comparison between two similar different routes for SSR through rolling suggests that the second one, Direct Hot Rolling + ARB technique, is more suitable to reduce the environmental impact of aluminum recycle industry. However, Accumulative Roll Bonding is considered a low productivity process for worldwide industries, considering the difficulty of automation and repeatability of the procedure.

AB - Aluminum utilization has been growing in the last decades thanks to its high strength to weight ratio, corrosion resistance, excellent plasticity, and good weldability. Recently, unconventional processes have been developed for aluminum recycling, called Solid-State Recycling (SSR), by avoiding melting process, allow to save up to 85% of energy needed for secondary aluminum production. The aim of this study is to assess the environmental advantages of a novel recycling technique namely Direct Hot Rolling process. This innovative solid state recycling process will be evaluated for its eco-friendliness. The Life Cycle Assessment (LCA) analysis follows a gate-to-gate approach: collected chips coming from prior cutting process are cold pressed and subsequently hot and cold rolled to obtain the functional unit, defined as the sheet produced through Direct Rolling of 35g of AA6063 chips. Primary data come from direct measurements provided by an industry plant operating in aluminum production field and direct measurements taken during the experimental activity in laboratory. Secondary data were provided by studies available in literature and SimaPro® databases. This LCA comparison between two similar different routes for SSR through rolling suggests that the second one, Direct Hot Rolling + ARB technique, is more suitable to reduce the environmental impact of aluminum recycle industry. However, Accumulative Roll Bonding is considered a low productivity process for worldwide industries, considering the difficulty of automation and repeatability of the procedure.

KW - AA6063

KW - Aluminum

KW - Chips

KW - Direct Hot Rolling

KW - LCA

KW - Solid State Recycling

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85195994644&partnerID=8YFLogxK

U2 - 10.21741/9781644903131-315

DO - 10.21741/9781644903131-315

M3 - Article in conference proceedings

AN - SCOPUS:85195994644

T3 - Materials Research Proceedings

SP - 2881

EP - 2890

BT - Material Forming, ESAFORM 2024

A2 - Araujo, Anna Carla

A2 - Cantarel, Arthur

A2 - Chabert, France

A2 - Korycki, Adrian

A2 - Olivier, Philippe

A2 - Schmidt, Fabrice

PB - Association of American Publishers

CY - Millersville, PA

T2 - 27th International ESAFORM Conference on Material Forming, ESAFORM 2024

Y2 - 24 April 2024 through 26 April 2024

ER -