Effect of Nano Dispersant Additions to the Electrodes for Aluminum Electrolysis

Abstract:

Over the next half decade, significant changes expected in global carbon structures, carbon products and applications. Technological advances that improve the structure-property relationship of advanced carbon materials and breakthrough in manufacturing processes resulting in lower cost, leads to availability of carbon nano materials for applications in the metallurgical industry with a reference to electrodes for the metallurgical industry.In the current work we synthesized pitch-based C/C nano composite lab scale electrodes, partially replacing petroleum coke with nanofibers, by using a ball milling dispersion and high energy milling technique. The effect of different processing variables including the amount of binder and dispersants as well as mixing conditions is investigated. Low vacuum -SEM analyses of green pitch and dispersant samples show the pitch coating on dispersants. Field emission gun (FEG)-SEM is used to analyse dispersants, baked pitch/dispersant system as well baked electrodes. Transmission electron microscope (TEM) is applied to investigate in detail the primary structure of the dispersants, as well as the fiber/matrix interface and the alignment of binder with the fibres in graphitized and un-graphitized electrodes.

• Periodical: Key Engineering Materials (Volume 875)
• Pages: 107-115
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.875.107
• Online since: February 2021
• Authors: Shahid Akhtar*, Sten Yngve Larsen
• Keywords: C/C Composites, Characterization, Electrodes for Aluminium Industry, Nano Dispersants

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