Abstract
The pyrolysis characteristics and coke microstructure of a large variety of electrode binders have been examined. Examination techniques included (1) thermogravimetric analysis with simultaneous differential thermal analysis, (2) optical and scanning electron microscopy, (3) proton nuclear magnetic resonance analysis, and (4) bondcoke strength measurements. Coaltar pitches exhibited more uniformity in pyrolytic behavior than the petroleum pitches studied. Petroleum binder quality varied widely from unacceptable to essentially equal that for coaltar pitch. While early stages of pyrolysis are basically endothermic for all binders, the later stages involve several exotherms related to the carbon polymerization process. In particular, exotherms at about 430°C and 470°C were repeatedly observed, both singly and together, which appeared to be related to binder aromaticity and degree of condensation.
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© 2016 The Minerals, Metals & Materials Society
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Jones, S.S., Hildebrandt, R.D. (2016). Electrode Binder Pyrolysis and Bond-Coke Microstructure. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_26
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DOI: https://doi.org/10.1007/978-3-319-48200-2_26
Publisher Name: Springer, Cham
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