By Les Edwards, Franz Vogt, and John Wilson.
For commercial and logistical reasons, the Anglesey Aluminium smelter has operated with two different coke sources over the last 30 years. During the last two years, the smelter has switched regularly between high and low sulfur cokes. Whilst anode performance has been satisfactory over this period, Anglesey initiated a study to investigate the benefits of blending the high and low sulfur cokes to reduce overall process variation and improve anode performance. This paper presents the results of a laboratory anode study used to justify expenditure on coke blending equipment and compares the laboratory results to plant anode results. Details of the blending equipment and preliminary plant results are also discussed.
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