Pilot scale column flotation studies on the beneficiation of coal fines

Vasumathi, N and Vijaya Kumar, T V and Subba Rao, S and Prabhakar, S and Bhaskar Raju, G and Prasad, Kopparthi (2015) Pilot scale column flotation studies on the beneficiation of coal fines. In: International seminar on Mineral Processing Technology, (MPT 2014) in Andhra University, 12-14 March 2015, Andhra University, Vishakapatnam, Andhra Pradesh..

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Large quantities of fines are generated during mining and preparation of coal. Froth flotation continues to be the most widely accepted technology for the treatment of slurry forming fines (- 0.5 mm), particularly when they are of coking variety. Beneficiation of coal fines with high ash was attempted by column flotation. A 0.5 m diameter pilot scale flotation column, designed and developed by CSIR - NML Madras Centre was installed at Jamadoba Coal Preparation Plant (JCPP) of M/s TATA Steel, to study the efficacy of column flotation technology for coal beneficiation. The yield of froth from flotation column, averaged over days of operation, was found to be 67.6% with an ash content of 14.1%. The average feed grade during this period was 25.2% ash and the tailings analyzed 48.3% ash. During the same period, froth from conventional flotation circuit analyzed 14.6% ash with 66.5% yield. The tailings of the conventional cell analyze 49.0% ash for the coal feed assaying 26.1% ash. Though the performance of flotation column is at par with the conventional flotation cells, the operational flexibility, low operational, maintenance and energy costs are attractive features of flotation column that lead to financial accruals over a long run.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/7231
Uncontrolled Keywords:Coal fines; froth flotation; column flotation; collector; frother
Divisions:NML Chennai > Mineral Processing
ID Code:7231
Deposited By:Ms. N Vasumathi
Deposited On:11 Dec 2015 10:17
Last Modified:11 Dec 2015 10:17
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