Title: Significance of washability on heat-altered coal from Jharia and Raniganj Coalfields, India

Authors: Mamta Sharma; Trisrota Bhowmick; Vivek Mishra

Addresses: Mineral Processing Division, CSIR – National Metallurgical Laboratory, Burmamines, Jamshedpur – 831007, India ' School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, Hebei, China ' Hebei Collaborative Innovation Center of Coal Exploitation, Hebei University of Engineering, Handan, 056038, Hebei, China

Abstract: The present investigation was aimed to characterise the natural coke-coal (NCC) or heat-altered coal products through washability, technological property and petrography. NCC of Permian age from Jharia and Raniganj coal basins, India were subjected to beneficiate and the microscopy was performed on the different specific gravity fractions. The yield of washed coals and contents of macerals showed many variations in both the case studies due to the influence of igneous intrusion. However, we can use both NCC products in the different industrial application such as metallurgy, carbon artefact, power plant, fluidised bed combustion (FBC) and for blending purpose despite of their mutual differences. [Received: August 14, 2019; Accepted: April 23, 2020]

Keywords: float-sink; heat altered coal; petrography; igneous activity; Indian coal; India.

DOI: 10.1504/IJOGCT.2021.115543

International Journal of Oil, Gas and Coal Technology, 2021 Vol.27 No.2, pp.169 - 185

Received: 14 Aug 2019
Accepted: 23 Apr 2020

Published online: 01 Jun 2021 *

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