Carbon anodesCarbon anodes will likely stay as the primary reduction medium in aluminiumAluminium smelting for years to come, despite the ongoing development of inert anodesAnode . This is due to the excess production of petroleum cokePetroleum coke as a by-product of hydrocarbon distillation and the CO2CO2 profile of energy production, making inert anodeAnode technology likely best suited for regions with hydropower as opposed to e.g. coal power. This means that industry must increase the environmental performance of the conventional Hall-Heroult process. We list several levers by which this can be achieved from an anodeAnode producer’s perspective. These levers include: Direct, examining factors to increase the efficiency of anode productionAnode production Indirect, examining factors that increase Potline efficiency and fuel consumption, examining potential to use renewable materials in anode productionAnode production . We conclude that there is still has a lot of potential to reduce the carbon footprintCarbon footprint of the Hall-Heroult process. The presentation is a combination of a literature review, and several industry examples.
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- How to Improve the Environmental Efficiency of the Hall-Heroult Process While Producing and Using Carbon Anodes
Ana Maria Becerra
in-adhesives, MKVS, Zühlke/© Zühlke, Nordson/© Nordson, ViscoTec/© ViscoTec, Hellmich GmbH/© Hellmich GmbH