Abstract
The calcination temperature of petroleum coke for aluminum anode applications has been generally increased during the past 10 years. This change by coke suppliers has often been done at the request of anode manufacturers (smelters) who seek special quality requirements for the calcined coke. Such an increase in calcining temperatures not only affects coke properties, but also has an effect on calciner operations and may have some unexpected effects on anode quality.
One high and one low sulphur coke were calcined industrially at two different levels. The four individual calcined cokes were characterized. Then laboratory scale anodes were produced with each individual calcined coke. These all-coke anodes were first evaluated for optimum pitch content. Then the anodes were baked over a range of temperatures (920 to 1260°C) in order to evaluate the influence of this heat treatment on anode properties.
The results show the influence of calcining temperature on coke properties and anode properties, including the most important influence of the anode baking level.
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Dreyer, C., Samanos, B., Vogt, F. (2016). Coke Calcination Levels and Aluminum Anode Quality. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_12
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DOI: https://doi.org/10.1007/978-3-319-48200-2_12
Publisher Name: Springer, Cham
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