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

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• 作者：R. Singh ; S. Dey ; N. Sinha
• 关键词：Flotation ; Coking coal ; De ; ashing ; Types of frother ; Selectivity
• 刊名：Transactions of the Indian Institute of Metals
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：70
• 期：2
• 页码：433-442
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials; Materials Science, general; Tribology, Corrosion and Coatings;
• 出版者：Springer India
• ISSN：0975-1645
• 卷排序：70

文摘

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.