| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop for Aluminum Production
|
| Presentation Title |
Optimised Re-melting by the Use of Low-temperature Oxyfuel at Hydro Aluminium’s Primary Aluminium Casthouse, Övre Årdal, Norway |
| Author(s) |
Henrik Gripenberg, Ken Torvanger, Johannes Lodin |
| On-Site Speaker (Planned) |
Henrik Gripenberg |
| Abstract Scope |
Hydro Aluminium Årdal produces primary foundry alloys of mainly AA4000 series. The capacity is 130 000 tonne per year . The four furnaces at the cast house are charged with a mix of pot-room metal and commodity metal. In 2007 the Söderberg pot-room was closed and the re-melting of solid metal had to be increased by 60% to keep up the production from the cast house. This meant that the fraction of solid metal in the casting furnace batch had to be increased. The goal had to be reached using the same furnaces and casting equipment. Therefore the furnaces were converted from air-fuel to Low-temperature Oxyfuel burners from Linde. The paper will discuss how the melting process was optimized. Further how the energy efficiency depend on the fraction of solid metal in the batch and results of productivity, dross, and economy. The Low-temperature Oxyfuel technology will be described |
| Proceedings Inclusion? |
Definite: A combination print-CD volume |