About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Automated Chemical Analysis of Liquid Aluminum for Process Control |
| Author(s) |
Sveinn Hinrik Gudmundsson, Halldor Gudmundsson, Kristjan Leosson |
| On-Site Speaker (Planned) |
Kristjan Leosson |
| Abstract Scope |
We report on automated analysis of the trace element content of liquid metal, implemented in a casthouse of a primary aluminum smelter. The automated analysis involves robotic sampling from transport crucibles followed by a direct measurement of the chemical content of the liquid metal using laser-induced breakdown spectroscopy (LIBS). Experiments were carried out on-site over a period of several months, sampling hundreds of crucibles and comparing the LIBS analysis with conventional laboratory spark-OES analysis of solid samples collected from the same crucibles. We discuss the predictive power of LIBS analysis for different trace elements, in pure aluminum as well as in 5000 and 6000 alloys, confirming that automated analysis of the molten metal can replace manual laboratory analysis for process control for many common trace and alloying elements. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Process Technology, Other |