| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Oxidation Study of Al-Mg Alloys in Furnace Atmospheres Using Hydrogen and Methane as Fuel |
| Author(s) |
Martin Syvertsen, Anders Johansson, Johannes Lodin, Are Bergin, Mari Ommedal, Yngve Langsrud, Ray D. Peterson |
| On-Site Speaker (Planned) |
Martin Syvertsen |
| Abstract Scope |
By switching from fossil to hydrogen fuel in melting furnaces, the CO2 footprint of a cast house in the aluminium industry can be reduced considerably. However, using hydrogen instead of fossil fuel will increase the water vapour concentration in the furnace atmosphere and likely change the oxidation behaviour of molten aluminium alloys. A series of tests have been performed where Al-Mg alloys were melted and normally held for up to 4 hours in different atmosphere compositions due to variations in fuel type and burner set-up. The results show that combustion of hydrogen in an air-fuel configuration gives more oxidation on liquid Al-Mg alloys than hydrogen in an oxy-fuel configuration. The tests also show that as little as 5% CO2 in the furnace atmosphere significantly supresses oxidation. The suppressing effect of CO2 was greater on alloys with 4.7% Mg than on alloys with 3.1 % Mg. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Environmental Effects, Pyrometallurgy |