About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Reduction Technology
|
Presentation Title |
Preparation of Aluminum Master Alloys by Electrolytic Co-deposition in Hall-Héroult Cells |
Author(s) |
Xiangwen Wang |
On-Site Speaker (Planned) |
Xiangwen Wang |
Abstract Scope |
Producing aluminum alloys in Hall cells can be an economical alternative to meet ever-increasing light weight alloy applications. Alcoa has carried out comprehensive studies over past years using Hall cells to produce aluminum-silicon, aluminum – scandium, and aluminum – rare earth alloys. The studies were performed in 300A lab scale with multiple electrolysis campaigns for each alloy with kilo scale of alloys produced. For the Al-Si, over 7.0% Si foundry alloy was produced by feeding Hall cell with alumina-sand mixture. For the Al-Sc, a master alloy of 3.5% Sc was produced with introducing scandium oxide and alumina. For Al-Re, 8.5% Re alloy was obtained by feeding rare earth oxides and alumina. This paper summarizes our lab scale studies for each of the Al alloy systems. Electrolysis operating conditions and key parameters were obtained which are considered a critical step toward commercial application in producing such alloys in Hall cells. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Electrometallurgy, Process Technology |