Dry processing of high ash Indian coal by air fluidized vibrating deck
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
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Title |
Dry processing of high ash Indian coal by air
fluidized vibrating deck
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Creator |
Dey, Shobhana
Chaurasia, Binish Sahu, Laxikanta |
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Subject |
Minerals and Mining
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Description |
Processing of noncoking coals in India is limited due to the high cost
involved in wet processing. In the present study, dry beneficiation of two
high ash Indian non coking coal samples from two different coalfields,
namely, Talcher (coal-A) and Ib Valley (coal-B) having diverse characteristics
are studied using an air fluidized vibrating deck separator. Washing
characteristics of two coal samples indicate that coal-A was easy-to-wash
and coal-B was difficult to wash. The near-gravity materials (NGM) present
in coal-B were higher than coal-A due to different geographical origin. The
responses of dry separation of two coal samples studied under varied
process variables were found to be dependent on the washability characteristics
and the operating parameters used for achieving the desired
product. The performance of dry beneficiation is described by the recovery
of combustibles, ash rejection, ash recovery in clean coal (RA/cc), Ecart
probable error (Ep), and organic efficiency. It is found that Ep of the dry
process was 0.17 for easy-to-wash coal (coal-A) and 0.23 for difficult-towash
coal (coal-B). The organic efficiency of coal-A was 91% and 80% for
coal-B at optimum condition. The prospective of dry separation of high
ash Indian coal using air fluidized vibration technology was found to be
effective for achieving product with 34% ash content.
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Publisher |
Taylor & Francis
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Date |
2020
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://eprints.nmlindia.org/8170/1/Dry_processing_of_high_ash_coal_-2020.pdf
Dey, Shobhana and Chaurasia, Binish and Sahu, Laxikanta (2020) Dry processing of high ash Indian coal by air fluidized vibrating deck. International Journal of Coal Preparation and Utilization, 30(3) (IF-2.034). pp. 367-372. |
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Relation |
https://doi.org/10.1080/19392699.2020.1755660
http://eprints.nmlindia.org/8170/ |
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