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作者:Laxmikanta Sahu , Shobhana Dey
来源:[J].International Journal of Coal Science & Technology, 2017, Vol.4 (3), pp.262-273Springer
摘要:Coal is primarily beneficiated by wet gravity methods. The wet processing of coal is an efficient practice. However, it introduces the moisture in the range of 6%–15%, depending upon the size of coal which is as detrimental as ash content to the heating value of coal. Dry be...
作者:... Laxmikanta Sahu , Shobhana Dey , Harish Singh
来源:[J].Transactions of the Indian Institute of Metals(IF 0.215), 2017, Vol.70 (2), pp.421-432Springer
摘要:Abstract(#br)Low volatile coking (LVC) coal reserves have become the key for sustaining the coking coal production in India. Because of high ash content and difficult washability characteristics coking coal in India is usually cleaned at 16–18% ash content. To obtain a reaso...
作者:Shobhana Dey , Santosh Pani ...
来源:[J].International Journal of Mineral Processing(IF 1.378), 2015, Vol.140, pp.58-65Elsevier
摘要:Abstract(#br)Iron ore slimes of India contain high alumina and silica that reduce the grade and pose difficulty in processing. This investigation addresses the interactive effect of process parameters on the processing of Indian iron ore slimes by using column flotation. The iron...
作者:Shobhana Dey , Santosh Pani ...
来源:[J].Separation Science and Technology(IF 1.164), 2012, Vol.47 (5), pp.769-776Taylor & Francis
摘要:In India, iron ores processing industries play a vital role in the Indian economy. During the washing and processing of iron ores, slimes less than 0.15 mm are generated and discarded into the tailing pond. These slimes need processing as they cannot be used directly in blas...
作者:S. Bhattacharya , Shobhana Dey
来源:[J].Mineral Processing and Extractive Metallurgy Review(IF 0.647), 2008, Vol.29 (4), pp.275-298Taylor & Francis
摘要:Separation efficiency in flotation depends, to a considerable extent, on the efficiency of the frother used. A successful frother must achieve a delicate balance between froth stability and non-persistency. Ideally, the frother is not supposed to influence the state of the surfac...
作者:Shobhana Dey , Santosh Pani , Ratnakar Singh
来源:[J].Powder Technology(IF 2.024), 2014, Vol.260, pp.78-83Elsevier
摘要:Abstract(#br)Frothers are surface active molecules and facilitate to produce more mechanically stable froth by reducing the surface tension at air–water interface. It adsorbs at the air–water interface and serves to reduce the loss of water from the lamellae of bubble. In th...
作者:Shobhana Dey , Gyana Manjari Paul , Santosh Pani
来源:[J].Powder Technology(IF 2.024), 2013, Vol.246, pp.689-694Elsevier
摘要:Abstract(#br)The low rank or oxidized coals show unpleasant flotation behaviour. The non-coking coal from Talcher, containing 26.8% ash, 4.9% moisture, 35.7% volatile matter and 1% oxygen was used for the investigation. The flotation performance of the weathered coal in a me...
作者:Shobhana Dey , K.K. Bhattacharyya
来源:[J].Fuel Processing Technology(IF 2.816), 2007, Vol.88 (6), pp.585-590Elsevier
摘要:Abstract(#br)The medium coking coal fines of − 0.5 mm from Jharia coal field were taken for this investigation. The release analysis of the composite coal reveals that yield is very low at 10.0% ash, about 25% at 14% ash and 50% at 17% ash level. The low yield is caused by t...
作者:Shobhana Dey
来源:[J].Fuel Processing Technology(IF 2.816), 2011, Vol.94 (1), pp.151-158Elsevier
摘要:Abstract(#br)The flotation of fine (− 0.5 mm) low rank or oxidized coal is difficult to achieve with the common coal flotation collectors like kerosene, fuel oil or diesel oil (oily collector). The presence of small amounts of oxygen is enough to cause oxidation. The oxidati...
作者:Sujit Kumar Dey , Shobhana Dey , Avimanyu Das
来源:[J].Powder Technology(IF 2.024), 2013, Vol.235, pp.914-920Elsevier
摘要:Abstract(#br)A systematic study on the comminution of a soft (coal) and a hard (iron ore) material is carried out to investigate the bulk comminution features of the hammer mill. The effect of the feed rate and the rotor speed on the mill efficiency in terms of reduction rat...

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