Sidewall materials for Hall-Héroult process

The performance of current sidewalls made of carbon and silicon based materials relies on the existence of a frozen electrolyte layer. The development of the Hall-Héroult cell technologies such as inert anodes and wettable cathodes, call for new sidewall materials since the frozen ledge may no longer be applicable. Nickel ferrite has been identified as a possible sidewall material, particularly in relation to its resistance to cryolite and air …