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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Electrode Technology
Presentation Title Electrochemical Reactivity and Wetting Properties of Anodes Made from Anisotropic and Isotropic Cokes
Author(s) Camilla Sommerseth, Rebecca Jayne Thorne, Arne Petter Ratvik, Espen Sandnes, Stein Rørvik, Lorentz Petter Lossius, Hogne Linga, Ann Mari Svensson
On-Site Speaker (Planned) Camilla Sommerseth
Abstract Scope As the quality of the coke available for production of anodes is deteriorating, future production will rely on cokes that are more isotropic with higher impurity levels than traditional raw materials. The purpose of this work was to improve the understanding of the electrochemical reactivity and wetting properties in relation to the quality of the coke. Electrochemical reactivity is affected by anode properties such as anode:electrolyte wetting, which depends on the polarization of the samples. Pilot anodes were fabricated from single source cokes; one anisotropic coke low in impurities, and one isotropic coke with significantly higher impurity levels. Electrochemical characterization included chronopotentiometry, cyclic voltammetry and impedance spectroscopy. Wetting properties were studied by the sessile drop technique, for polarized samples by a dedicated wetting apparatus, and by computed tomography images of frozen electrolyte films.
Proceedings Inclusion? Planned: Light Metals Volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anode Baking Furnace Fluewall Design Evolution: A Return of Experience of Latest Baffleless Technology Implementation
Cathode Wear in Electrowinning of Aluminum Investigated by a Laboratory Test Cell
Characterization of Carbon Anode Materials by Image Analysis
Copper Bars for the Hall-Héroult Process
Effect of Cathode Collector Copper Inserts on the Hall-Héroult Cell MHD Stability
Effect of Heating Rate during Baking on the Properties of Carbon Anodes Used in Aluminum Industry
Electrochemical Reactivity and Wetting Properties of Anodes Made from Anisotropic and Isotropic Cokes
Empirical Modeling of the Baking Furnace to Predict Baked Anode Properties
In Situ Investigation of the Behavior of Anode Assemblies
Interfacial Boundary between Carbon Anodes and Molten Salt Electrolyte
Journey towards World-Class Operational Effectiveness at DUBAL (EGA Jebel Ali Operations) Paste Plant
Low Resistance Anode Assembly Using Steel Stubhole Conductors across the Cast Iron to Carbon Interface
Measurement of the Electric Current Distribution in an Anode
MIREA: An On-line Quality Control Equipment Integration in an Operational Context
Modeling Gravity Wave in 3D with OpenFoam in an Aluminum Reduction Cell with Regular and Irregular Cathode Surfaces
Porous Carbon Anodes for the Supply of Methane during Electrowinning of Aluminium
Quantification of Sodium Present in Dry Aggregates and Anodes
Simulation-Based Decision Support in Cathode Relining Facility Scaling
Study of the Wetting of Coke by Different Pitches
The Start up & the Operation Performance of the Twin Green Anode Plant at Ma'aden Aluminium Smelter in Saudi Arabia
Uneven Cathode Wear in Aluminium Reduction Cells
Upgrade of the Firing and Control System at Egyptalum for Dual Fuel Firing

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