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Air Emissions—Case Studies
Daily management of scrubbers in the Electrolysis sector
The Air Environment team at the Deschambault aluminum smelter has developed a highly effective tool for optimally managing fluoride emissions at the scrubbers in the Electrolysis sector.
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Replacing pot hoods in the Electrolysis sector
A curved electrolytic pot hood has two marked advantages relative to a flat one. First, it is more solid, and thus less likely to be damaged in the potline. Secondly – and this is environmentally significant – it is more air tight and accordingly reduces fluoride emissions.
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Testing hybrid pitch at the Söderberg pots
To meet future government environmental standards, the Baie-Comeau aluminum smelter is working on reducing its polycyclic aromatic hydrocarbon (PAH) emissions, which are produced during the combustion of briquettes in the anodes of the Söderberg pots. The new standards will be 0.30 kg/metric ton of aluminum (mt Al) and, in 2010, they will go down to 0.20 kg/mt Al.
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Reducing greenhouse gases: a winning proposition for the Bécancour aluminum smelter
Thanks to persistent teamwork, the Bécancour aluminum smelter (ABI) has made remarkable progress in reducing greenhouse gases. For several years, the plant has applied itself to the task of reducing emissions of perfluorocarbons (PFCs), which are potent greenhouse gases.
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