| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
F-32: Furnace Lining Degradation by 5xxx Aluminum Alloys |
| Author(s) |
Athanasia Flampouri, Theofani Tzevelekou, Sofia Papadopoulou, Spyros Pinis, Nikolaos Sgourdakis |
| On-Site Speaker (Planned) |
Athanasia Flampouri |
| Abstract Scope |
In the secondary aluminum industry the degradation of the melting furnaces lining in service has a significant impact on the energy efficiency and productivity affecting overall cast-house operational costs. The refractory degradation may involve metal penetration into the refractories, corundum formation at the metal-refractory interface, refractory discoloration and/or cracking. The objective of this work is to examine the corrosion performance of different types of commercial refractory raw materials, pre-cast silica based and alumina-silicate bricks, during melting of high Mg aluminum alloys. The results of lab-scale partial immersion melting trials are comparatively presented. The employed assessment techniques consist of macro-scopic and microscopic examination of interacted metal-ceramic surfaces, mineralogical characterization (XRD) of the refractories and chemical analysis of the treated metal. Microanalyses (SEM-EDS) of the critical involved interfaces enlighten the prevailing corrosion mechanisms. The described experimental work provides a simple tool to assist refractory lining selection in the aluminum treatment furnaces. |
| Proceedings Inclusion? |
Planned: Light Metals |