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Chemical beneficiation of Hingula coal

IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur

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Title Chemical beneficiation of Hingula coal
 
Creator Purohit, Bijoy Kumar
Pramanik, Swati
Meshram, Pratima
Sahu, S K
Pandey, B D
 
Subject Metallurgy
Chemical Engineering
 
Description Mineral matter can be reduced by using chemical demineralisation techniques. In this study beneficiation of Hingula coal from Talcher coal field, Odisha, India, having 29.6% ash is reported. Physical beneficiation of the Hingula coal reduced the ash content to 13.3%. To further reduce the ash content, Hingula coal was chemically treated in a two-stage leaching process i.e. alkali leaching followed by acid leaching. Various process parameters such as concentration of alkali, time, and temperature required for optimum demineralisation have been investigated. It was found that by leaching with 0.25N Na CO for 60 min at a temperature of 85°C and a 2 3 pulp density of 10% followed by leaching with 10% HCl at 95°C for 60 min, ash content of this coal was reduced to 9.8%. It was also observed that when this coal was leached only with 10% H SO at 95°C for 60 min ash content was reduced to 9.8%. It was also observed that when this coal was leached only with 10% H SO at 95°C for 60 min ash content was reduced to 9.8%. The calorific value of the chemically treated coal was also determined.
 
Publisher CSIR-NML
 
Date 2014-09
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://eprints.nmlindia.org/7328/1/173-177.pdf
Purohit, Bijoy Kumar and Pramanik, Swati and Meshram, Pratima and Sahu, S K and Pandey, B D (2014) Chemical beneficiation of Hingula coal. Journal of Metallurgy and Materials Science, 56(3) . pp. 173-177.
 
Relation http://eprint.nmlindia.org/7328
http://eprints.nmlindia.org/7328/