Title: Effect of aggloflotation of coal slimes by use Flomin C9606 as a collector
Authors: Richard M. Kasomo; Sammy Ombiro
Addresses: Mining and Mineral Processing Engineering Department, School of Mines and Engineering, Taita Taveta University, P.O. Box 635-80300 Voi, Kenya ' Mining, Materials & Petroleum Engineering Department, School of Mechanical and Materials Engineering, Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000-00200 Nairobi, Kenya
Abstract: In many coal preparation concentrators, coal slimes form the major challenge due to difficulties in its processing and upgrading. Several techniques are currently being devised in coal industries to aid in beneficiation of the coals in their finer sizes. Ultra-fine coal particles are exclusively processed by oil agglomeration, selective flocculation or hydrophobic flocculation flotation techniques. In this research, the focus is on hydrophobic flocculation flotation to clean ultrafine coal particles. Collector dosage, agitation stirring speed and grinding fineness batch tests were conducted, followed by flocculation and froth flotation. The results showed that optimum collector dosage (Flomin C9606) was 10 kgs/ton, the impeller speed 1,500 rpm and 30 minutes achieved the best grinding fineness. Two stage flow sheet produced froth recovery of 86.28% and ash content was 6.39%. It was therefore concluded that Flomin C9606, as a collector, was capable of obtaining clean coal product from these results.
Keywords: coal slimes; hydrophobic flocculation flotation; Flomin C9606; froth flotation.
DOI: 10.1504/IJMME.2020.105860
International Journal of Mining and Mineral Engineering, 2020 Vol.11 No.1, pp.23 - 32
Accepted: 12 Feb 2019
Published online: 16 Mar 2020 *