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Effects of calcination upon properties of needle-cokes

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Abstract

A green needle-coke was heated from 773 to 1323 K at 50 K intervals. The following properties were assessed: bulk dimensions, optical texture, fissure development, microstrength and elemental composition. It was observed that volumetric shrinkage of the green needle-coke commenced at about 900 K and appears to be largely complete at 1200 K. The shrinkage is 7%. The proportion of anisotropic components which make up the optical texture of needle-coke are unaffected by calcining. Contraction fissuring develops preferentially in domain optical texture, the shape of fissures being determined by lamellar orientation within the domain. Fissuring also appears to be complete at 1200 K. The microstrength of needle-coke increases continuously with calcining temperature.

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Ragan, S., Marsh, H. Effects of calcination upon properties of needle-cokes. J Mater Sci 18, 3695–3704 (1983). https://doi.org/10.1007/BF00540742

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  • DOI: https://doi.org/10.1007/BF00540742

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