Detailed Model of Electrochemical Cathode Wear in Hall-Héroult Cells
作者： Tao Li , Stein Tore Johansen , Asbjern Solheim
DOI: 10.1002/9781119093435.CH140
关键词: Electrolytic cell 、 Aluminium carbide 、 Metallurgy 、 Hot cathode 、 Aluminium 、 Carbon 、 Cathodic arc deposition 、 Cathode 、 Electrochemistry
摘要: Clarification of the underlying chemistry and physics is critical for understanding “double W” wear pattern carbon cathode observed in Hall-Heroult cells. Many studies have pointed out that aluminium carbide formation on surface dominating process determines wear. However, mechanisms are still not well clarified. In this study, previous work mechanism summarized. The region between molten considered as a small “local electrolysis cell” involving pad, bath film, an layer, cathode. rate proportional to current through which obtained by applying Ohm’s law voltage electro-chemical reaction. A model established calculating rate.
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