TY - GEN
T1 - Recycling Aluminum Casting Alloy Scrap Using Molten Salt Electrolysis
AU - Lu, Xin
AU - Watanabe, Kyosuke
AU - Takeda, Osamu
AU - Zhu, Hongmin
N1 - Funding Information:
Financial support given by the Grant-in-Aid for Scientific Research, JSPS KAKENHI grant No. 20K15069 and No. 21H04610 is deeply acknowledged.
Publisher Copyright:
© 2022, The Minerals, Metals & Materials Society.
PY - 2022
Y1 - 2022
N2 - Aluminum is an important base metal that is widely used in various industries owing to its excellent properties, such as light weight (2.7 g cm−3), high specific strength, and high corrosion resistance. However, the extraction and smelting process of aluminum from aluminum ore is extremely energy-intensive, such that significant attention is being given to aluminum recycling. Currently, approximately 1/3 of aluminum is supplied from aluminum scrap. However, the current aluminum recycling by remelting process is a downgrade approach because the alloying elements contained in the aluminum scrap cannot be efficiently separated hence enriches in the recycled aluminum. The high alloying concentration in the current recycled aluminum limits its application to aluminum casting alloys, which have much higher tolerable concentration for alloying elements than that of wrought alloys. To achieve an upgrade recycling of aluminum, in this study, separation of the silicon and copper, the two most important alloying elements in typical aluminum casting alloys, were carried out by using a molten salt electrolysis process.
AB - Aluminum is an important base metal that is widely used in various industries owing to its excellent properties, such as light weight (2.7 g cm−3), high specific strength, and high corrosion resistance. However, the extraction and smelting process of aluminum from aluminum ore is extremely energy-intensive, such that significant attention is being given to aluminum recycling. Currently, approximately 1/3 of aluminum is supplied from aluminum scrap. However, the current aluminum recycling by remelting process is a downgrade approach because the alloying elements contained in the aluminum scrap cannot be efficiently separated hence enriches in the recycled aluminum. The high alloying concentration in the current recycled aluminum limits its application to aluminum casting alloys, which have much higher tolerable concentration for alloying elements than that of wrought alloys. To achieve an upgrade recycling of aluminum, in this study, separation of the silicon and copper, the two most important alloying elements in typical aluminum casting alloys, were carried out by using a molten salt electrolysis process.
KW - Aluminum scrap
KW - Lower energy intensity
KW - Molten-salt electrolysis
KW - Upgrade recycling
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U2 - 10.1007/978-3-030-92529-1_136
DO - 10.1007/978-3-030-92529-1_136
M3 - Conference contribution
AN - SCOPUS:85125281820
SN - 9783030925284
T3 - Minerals, Metals and Materials Series
SP - 1046
EP - 1050
BT - Light Metals 2022
A2 - Eskin, Dmitry
PB - Springer Science and Business Media Deutschland GmbH
T2 - Light Metals Symposium held at the TMS Annual Meeting and Exhibition, 2022
Y2 - 27 February 2022 through 3 March 2022
ER -