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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Electrode Technology for Aluminum Production
Presentation Title Plate Yokes. Anode Assembly without Cast Iron
Author(s) Jorund Gimmestad Hop, Vidar Hjelle, Per Johnny Teigen, Inge Arild Vee, Bjarte Arne ye, Grzegorz Stefanski
On-Site Speaker (Planned) Jorund Gimmestad Hop
Abstract Scope Anode assemblies typically consist of steel stubs locked into holes in the anode carbon using cast iron. The contact resistance between the cast iron and carbon and the necking of the amperage in the anode top contribute to electrical resistance. In the anode assembly presented here the cast iron is replaced by steel shots and the stubs replaced by plates. The assembly is held together with eight L-locks machined into the carbon anode. The steel shots sinter during an anode cycle, but can after an anode cycle be stripped off, crushed and re-used. The area of the yoke-carbon-connection is increased by using plates instead of stubs. A reduction of 50 mV-100 mV in 11 kA anode assemblies was measured. The contact area and therefore the electrical resistance is less affected when changing plate thickness. The heat loss of such an assembly is therefore easier to design. The rodding operation without liquid cast iron will be safer. The footprint, investment cost and operation cost of such a rodding station will probably be significantly reduced.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Other, Joining


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