CPC Testing and Relationship Between Coke and Anode Physical Properties

Lubin, Marvin; Edwards, Les; Harp, Kevin; Kuhnt, Christopher

doi:10.1007/978-3-319-51541-0_143

Cited by 3 publications

(2 citation statements)

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“…Furthermore, no high pressure compaction of the green composite was performed. Consequently, the resistivities of the present work are much higher than those found for laboratory anodes made by the Al industry . While the results examined a variety of calcining and baking protocols for formation of the final block, physical properties follow clear trends (Figure ).…”

Section: Resultsmentioning

confidence: 63%

“…Consequently, the resistivities of the present work are much higher than those found for laboratory anodes made by the Al industry. 42 While the results examined a variety of calcining and baking protocols for formation of the final block, physical properties follow clear trends (Figure 7). Among a variety of variables examined, both the resistivity and apparent density correlated most strongly with respect to calcination time at the final temperature of 1200 °C, giving strongly linear trends (Figure 7a).…”

Section: ■ Results and Discussionmentioning

confidence: 96%

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Renewable Biomass-Derived Coke with Texture Suitable for Aluminum Smelting Anodes

Elkasabi

Darmstadt

Boateng

2018

ACS Sustainable Chem. Eng.

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Industrial producers of calcined petroleum coke encounter issues pertaining to product quality and environmental ramifications. While previous attempts to produce biorenewable versions of calcined coke address CO2 footprint, sulfur, and metals poisoning, none have demonstrated a sufficient degree of anisotropy, which is critical for performance in aluminum smelting anodes. Using fast pyrolysis of biomass, we produced bio-oils of sufficient quality whereby coke can be formed through distilling off the volatiles. Tail-gas reactive pyrolysis (TGRP) produced bio-oils with low oxygen content, low viscosity, and high polyaromatic content, all of which are critical for alignment of coke precursors. Distillations at controlled rates and temperatures ensured the alignment of polyaromatic domains leading to coke anisotropy. Bio-oils with oxygen content below 16 wt % successfully produced coke with mixtures of isotropic and anisotropic domains. In coprocessing experiments, mixtures of pyrolysis bio-oil and green petroleum coke coked under similar conditions to produce highly anisotropic textures, although degrees of discontinuity exist within merged particles. When baked with coal tar pitch as an additive, calcined biocokes exhibited resistivity values of 100–200 μΩ·m, which correlated well with the calcination time at 1200 °C.

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Section: Resultsmentioning

confidence: 63%

Section: ■ Results and Discussionmentioning

confidence: 96%