Study on Flotation Response of Coal from Gamo Zone Southern Ethiopia
No Thumbnail Available
Date
2023-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Based on the log results of pits, geophysical results and areal coverage of coal deposits in Gamo zone, Kuccha woreda, it is roughly estimated to have 744,174.96 tons of coal. The flotation response of a coal is a critical factor in determining the efficiency of coal beneficiation processes. The study investigated the effects of collector dosage, frother dosage, and particle size on the flotation response of Gamo area coal in a 3-liter batch flotation experiment. Kerosene was used as the collector and n-octanol as the frother. Full factorial Design was applied to investigate the effect of collector dosage (10ml, 20ml), frother dosage (2ml, 6ml) and particle size (-250 μm +125μm -125 μm) on the process of flotation using Design expert® 6 software, which shows the significant influence on the value of yield and recovery. The result showed that the optimum condition for the process was 18.3ml, 4.7ml and -125 μm which resulted in 81.7% yield,90% combustible matter recovery and 37.5% flotation efficiency index. The findings suggest that careful optimization of reagent dosages and particle size can significantly improve the flotation response of Gamo area coals, with potential applications in coal beneficiation processes.
Description
Keywords
froth flotation, collector, frother particle size, Gamo coal.