Chakravarti, A.K. and Basu, D. and Sarkar, G.G. and Lahiri, A. (1960) Studies in Low Pressure Cyclone Coal Washer. Journal of Mines, Metals & Fuels, 8 (7). pp. 88-96. ISSN 0022-2755

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Abstract

The effectiveness of cyclone type of washers in upgrading of small size difficult-cleaning coals has been established. Formerly, it was the common belief that cyclone washers can be efficiently operated only at higher pressures obtainable from high-head centrifugal pumps. But the present investigations on cyclone operation, as outlined in this paper, have clearly revealed that by proper designing, cyclone can be made to operate with high efficiencies using a low feed pressure and with the aid of any feed pump. The low feed pressure can achieve a similar separation to that of a high feed pressure by fixing the cyclone washer in an inclined position. The performance of a 6” diameter cyclone washer using an overhead feed tank indicates a similar (if not better) quality of separation with (i) an inclination of about 20º (to the vertical) of the washer, (ii) a feed pressure of about 6 p.s.i. and (iii) a pulp ratio of about 4.75 : I. The modified arrangement of the cyclone setup has been observed to provide greater flexibility in operational control of the plant, besides the curtailment o total power coast involved in the operation and the reduction of the size degradation of washed products to a minimum.

Item Type:	Article
Subjects:	Chemicals and Liquid Fuels
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	13 Aug 2012 10:03
Last Modified:	13 Aug 2012 10:03
URI:	http://cimfr.csircentral.net/id/eprint/1356

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