Pandey, J.K. and Charan, T. Gouri (2015) Study on Beneficiation behavior of IB Valley Coal. CPSI Journal, 7 (18). pp. 7-12.

PDF Restricted to Registered users only Download (4Mb) | Request a copy

Abstract

The mineral matter in coal has several detrimental effects on coal utilization. It affects almost every aspect like mining, handling, transportation, utilization etc. With the depletion of good quality coal attention has been diverted towards use of low grade coals with high ash. Indian thermal coals known for their wide variations in nature are categorized as difficult to wash. It necessitates suitable beneficiation techniques to reduce the burden in most combustion cleaning systems. Due to heterogeneity inorganic and organic contains of coal are difficult to determine which causes environmental problem in its usage cycle. The paper describes beneficiation of IB valley coal using conventional float sink method and characterization study of a suitable specific gravity cut (determined by washability curve) to determine its washability and combustion behavior. Result of the study reveals that quartz content of washed coal with 34% ash yield, as mandated by the Ministry of Environment and Forest (MOEF) for the use of coal in power plants, is reduced to half of that of the raw one. Quartz is the most abrasive mineral in coal and its reduction proportion along with Kaolinite obviously signifies efficient, economic and ecofriendly utilization. The composition of the major minerals viz., quartz and Kaolinite also favors formation of ash of refractory nature during combustion.

Item Type:	Article
Uncontrolled Keywords:	IB valley coal, beneficiation, refractory
Subjects:	Respiratory Protection Laboratory
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	01 May 2017 04:44
Last Modified:	02 May 2017 10:02
URI:	http://cimfr.csircentral.net/id/eprint/1671

Actions (login required)

View Item