7f2d5e8a_ium_smelters___ClimateTechWiki__2
[0] Process simplification / control [1] Eliminate carbon plant [3] Control system changes (how to deal with fixed plane anode and moving plane cathode) [4] Dimensionally stable flat bottom, better control of anode-cathode distance (ACD) [2] 
Many fewer anode changes
Inert anode technology for aluminium smelters | ClimateTechWiki
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