| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Melt Processing, Casting and Recycling
|
| Presentation Title |
Silicon Depletion in Ceramic Foam Filters (CFFs) during Aluminium Melt Filtration |
| Author(s) |
Are Bergin, Robert Fritzsch, Shahid Akhtar, Lars Arnberg, Ragnhild Aune |
| On-Site Speaker (Planned) |
Shahid Akhtar |
| Abstract Scope |
Filtration is a widely used method for removing non-metallic inclusions/bifilms from molten aluminium, where Ceramic Foam Filters (CFFs) are the most applied medium due to their relatively low cost and easy use. Many CFFs are phosphate-bonded, and for decades they were believed to be inert in contact with molten aluminium. Recent studies have shown that this is not the case, making it necessary to study even non-phosphate-bonded CFFs. Through aluminium melt pilot-scale filtration trials using a 6082-alloy and commercial CFFs based on sintered alumina (Al2O3) and silica (SiO2), the present study shows that even these filters can react with the aluminium melt. Through microscopic characterization of unused/used CFFs, the used filters showed (i) indications of silicon depletion and (ii) barely any reaction. Based on the microscopic evaluation and LiMCA data, the silicon depletion and the conditions leading to silicon depletion are discussed in view of its effect on filtration efficiency. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Other, Other |