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Published in:
2016 | OriginalPaper | Chapter
Characterization of Homogeneity of Green Anodes Through X-Ray Tomography and Image Analysis
Authors : Kamran Azari, Behzad Majidi, Houshang Alamdari, Donald Ziegler, Mario Fafard
Published in: Light Metals 2014
Publisher: Springer International Publishing
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Homogeneity of green anode has a direct effect on final properties of baked carbon anodes. This work aimed to study the influence of mixing parameters on the homogeneity of laboratory-scale anodes. Anode pastes were made using different mixing times and temperatures and then underwent a compaction procedure. Homogeneity was characterized by the distribution of coke, pitch and porosity throughout the anodes as well as the variations in binder matrix thickness (fine coke + pitch). X-ray tomography was used as a non-destructive tool to evaluate the material distribution within the samples. The microscopic images of the green samples were analyzed to measure the mean thickness of binder matrix. The lowest variations in material distribution and the minimum thickness of binder matrix were obtained for the sample mixed at 178 °C for 10 minutes. The most homogeneous sample with the lowest binder matrix thickness had the maximum green and baked apparent density.