Chattopadhyay, U. S. and Gouri Charan, T. (2021) Utilization of High Ash, Low Volatile Coking Coals of Jharia Coalfield, India for Coke Making. Coke and Chemistry, 64. pp. 12-17.

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Abstract

India is having limited resources of coking coal, an essential input for production of iron and steel especially through blast furnace route. The coking coal sources are presently from the lower seams of Jharia coalfield, which are high in ash content and low in volatile matter and difficult to wash. This paper describes the washability characteristics of a typical coking coal from the Eastern and Western Jharia coalfields aiming at 18% ash level in the clean coal mainly to meet the specifications of coke making for blast furnace use. Conventional float-and-sink testing was used to determine the yield of clean coal for the coarser fraction, while the coal fines was subjected to flotation. The theoretical recovery of clean coal for the coal tested from Eastern and Western Jharia coalfields are 27% and 19.7% at the stipulated ash content. The coking propensities and the petrographic analysis of the clean coal strongly support its use for coke making either directly or as a blend with imported coal.

Item Type:	Article
Uncontrolled Keywords:	washability low volatile flotation petrograhy carbonization
Subjects:	Coal Characterisation
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	03 May 2021 04:09
Last Modified:	03 May 2021 04:09
URI:	http://cimfr.csircentral.net/id/eprint/2353

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