|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Electrode Technology Symposium for Aluminum Production
||An XANES Study of Sulfur Speciation and Reactivity of Cokes Used for Aluminium Production
||Gøril Jahrsengene, Richard Haverkamp, Hannah Wells, Stein Rørvik, Arne Petter Ratvik, Ann Mari Svensson
|On-Site Speaker (Planned)
Availability of raw materials in the growing aluminium industry results in a wider range of petroleum cokes being used to produce carbon anodes. The border between anode grade and fuel grade coke are no longer as distinct as before, and cokes with higher sulfur and trace metal impurity content are now used in anode manufacturing. The major effect of using high-sulfur cokes is the increased production of the environmentally unfriendly SO2 gas via formation of COS. Sulfur is also believed to decrease the reactivity between carbon and CO2, in this case described as beneficial sulfur. The chemical nature of sulfur in industrial cokes were investigated with K-edge XANES, and the findings are discussed in relation to current knowledge on sulfur speciation in cokes. This knowledge is believed to give a better understanding of different cokes and how sulfur affects the behaviour and consumption of the anode during electrolysis.
||Planned: Light Metals