About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Aluminum Reduction Technology
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| Presentation Title |
Wet SO2 scrubbing of pot exhaust gases with lime or limestone |
| Author(s) |
Stephan Broek |
| On-Site Speaker (Planned) |
Stephan Broek |
| Abstract Scope |
In most cases, pot gases are scrubbed for SO2 using the seawater process. But this only applies to smelters that have access to seawater. Over recent years, smelters in China have had to install SO2 scrubbers to meet the set limit of 35 mg SO2 per Nm3. The inland smelters have adopted both semi-dry and wet SO2 scrubbing processes using lime (CaO) or limestone (CaCO3) to meet their new emissions requirements.
There are new smelter developments outside of China that are not located on the coast and are facing SO2 scrubbing requirements. These smelters will have to consider other options, such as scrubbing with lime or limestone. This is new, and in this paper, we will have a closer look at the wet lime/limestone process to provide an understanding of how this works and can be implemented in an aluminium smelter.
|
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Environmental Effects, Process Technology |