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.
Similar content being viewed by others
References
S. Ragan and H. Marsh, J. Mater. Sci. 18 (1982) 3161.
L. M. Ligget, “Encyclopaedia of Chemical Technology”, Vol. 4, 2nd edn (John Wiley and Sons, New York, 1972) p. 158.
J. T. Meers, “Encyclopaedia of Chemical Technology”, Vol. 4, 3rd edn (John Wiley and Sons, New York, 1978) p. 571.
S. Ragan and H. Marsh, J. Mater. Sci. 18 (1983) 3705.
Idem, ibid. 18 (1983) 3712.
R. W. Wallouch and F. V. Fair, Carbon 18 (1980) 147.
H. Marsh and J. Smith, “Analytical Methods for Coal and Coal Products”, Vol. 2, edited by Clarence Karr Jr. (Academic Press, New York, 1978) pp. 371–414.
H. L. Riley, “The Yearbook of the Coke Oven Managers' Association” (Benn Brothers, London, 1940) p. 312.
H. Tillman, U. Braun and H. Pauls, Extended Abstracts of 15th Biennial Conference on Carbon, Philadelphia, USA, June 1981 (American Carbon Society and The University of Pennsylvania, Philadelphia, Pennsylvania) p. 443.
T. Reis, Hydrocarbon Process. 55 (1975) 97.
J. A. Griffiths and H. Marsh, Extended Abstracts of 14th Biennial Conference on Carbon, University Park, PA, June 1979 (American Carbon Society and The Pennsylvania State University) p. 117.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
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
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00540742