Single reagent for coal flotation

Vasumathi, N and Vijaya Kumar, T V and Subba Rao, S and Prabhakar, S and Bhaskar Raju, G and Shivakumar, S and Raman, Uma (2013) Single reagent for coal flotation. In: National Conference on Coal Preparation Technology 2013, 22-23 Feb 2013, CSIR-CIMFR, Dhanbad.



Froth flotation is widely used for the beneficiation of fine coal and collectors are important for the effective separation in flotation. Conventionally, diesel in combination with a commercial frother is used in most of the coal washeries. With the escalating costs of petroleum products and their negative impact on environment, attempts were made to formulate an eco-friendly single reagent to replace diesel-frother system without hindering the flotation process performance. NML-Madras Centre in collaboration with M/s Somu Organo Chem Pvt Ltd, has been working on the formulation and evaluation of flotation reagents. Laboratory flotation tests were carried out using series of single reagents on a coking coal sample from Jharia region in the eastern part of India with an ash content of 24.9%. The best among the single reagents, Sokem 590C, yielded a float of 56.57% at 13.97% ash in the bench scale laboratory test. Based on encouraging results of flotation tests and kinetics studies, plant trials were conducted at a coal preparation plant in eastern India. The results of plant trials using this single reagent, Sokem 590C, are highly encouraging and economical as compared to diesel-frother system and this single reagent is non-petroleum based and biodegradable.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Coal flotation, diesel, frother, single reagent, Sokem 590C.
Divisions:NML Chennai > Mineral Processing
ID Code:6439
Deposited By:Ms. N Vasumathi
Deposited On:12 Mar 2013 12:08
Last Modified:12 Mar 2013 12:08
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