Structural characterization of coking component of an Indian coking coal

Mohanty, Ashok and Chakladar, S and Mallick, S and Chakravarty, S (2019) Structural characterization of coking component of an Indian coking coal. Fuel, 249 . pp. 411-417.

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Coking coal is used for coke making owing to its inherent swelling and thermoplastic properties. Non-coking coal on the other hand lacks these coking properties and hence coke making from non-coking coal is a challenging task. In the present study, we isolated the “coking component” present in an Indian coking coal by density separation followed by solvent extraction method and elucidated its chemical structure using XRD, Raman, XPS, FT-IR, NMR and mass spectrometry techniques. The coking component was found to have turbostatic graphitic structure similar to that of expandable graphite. Finally, we synthetically induced coking properties in four non-coking coals of Indian origin using expandable graphite and molasses following a simple heat treatment process. The resultant modified coal produced G1-G2 grade coke in low temperature Gray King (LTGK) assay.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:Coke;Non-coking coal;Expandable graphite;Molasses;Coal structure
Divisions:Material Science and Technology
ID Code:7936
Deposited By:Sahu A K
Deposited On:26 Sep 2019 07:53
Last Modified:26 Sep 2019 07:53
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