Performance of Different Classes of Organic Compounds as Frother in De-ashing of Indian Coking Coal by Froth Flotation

  • R. SinghEmail author
  • S. Dey
  • N. Sinha
Technical Paper


Flotation studies were carried out on a high ash coking coal sample using different classes of organic compounds as frothers. The organic compounds used as frothers in the present study were the following: (a) Frothers from natural sources (cyclic alcohol/phenols), (b) Synthetic frothers: Aliphatic alcohols, Polyglycols, Alkoxy alkane and Cyclic ethers. The time-recovery flotation data were analysed using a modified first order kinetic model. The performances of different frothers were evaluated using the parameters such as yield, ash, recovery of combustible, rate constant and selectivity. It was observed that synthetic frother, in particular poly ethylene glycol (molecular weight 400) showed overall better performance against others. The mechanism of performance of typical frothers was studied. The improved performance of poly-ethylene glycol was attributed to the higher surface activity and the enhanced frothing characteristics.


Flotation Coking coal De-ashing Types of frother Selectivity 



The authors are thankful to Dr. K. Muraleedharan, Director, CSIR-National Metallurgical Laboratory, Jamshedpur for kindly permitting to publish this paper.


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Copyright information

© The Indian Institute of Metals - IIM 2016

Authors and Affiliations

  1. 1.Mineral Processing Division, CSIR-National Metallurgical LaboratoryCouncil of Scientific and Industrial ResearchJamshedpurIndia
  2. 2.Department of ChemistryJamshedpur Cooperative CollegeJamshedpurIndia

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