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Hatch Aluminum

In-Pot Testing of Hatch Anode Nails

Reduced power consumption saves electricity costs

Aluminerie Alouette Inc. | Canada | 2015


power savings potential


improvement in current stability


  • Regular anode assemblies with a cast-iron connection between rod stub and carbon anode (STC connection) suffer from high electrical resistance due to solidification shrinkage of the iron.


  • Hatch anode nails form a tight, conductive bridge across the shrinkage gap. This reduces the electrical resistance of the anode assembly, making it less dependent on temperature.


  • Reduced power consumption (kwh/kg Al)
  • Increased current efficiency(%) due to lower pot noise (unstable current)
  • Anticipated longer stub life due to colder stubs from less ohmic heating

Services & technologies provided


Aluminum Reduction

Technology development

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