Investigation of the performances of classic flotation oils and their mixture in the enrichment of Soma lignite coal by flotation

In the present study, the effects of classical oils (kerosene, fuel oil) and their mixtures (25% Kerosene + 75% fuel oil; 50% Kerosene + 50% fuel oil; 75% Kerosene + 25% fuel oil) on the enrichment of Soma Lignite coal by flotation were investigated. The effects of collector amount on combustible recovery, ash reduction and efficiency index, which are among the parameters that are effective in the enrichment of Soma Lignite coal using both pure and mixed classical oils, were analyzed. In the experiments made with pure oils, the best value in terms of combustible part recovery was obtained with fuel oil. Combustible recovery obtained from experiments with mixtures are higher than those with pure oils. It should be noted that especially in experiments with 25% kerosene + 75% fuel oil, higher combustible recovery values were obtained. According to these results, it shown that depending on the oil or emulsion type, the degree of processes taking place at the coal-air-water interface and the presence of unstable functional groups in the oils seem to significantly affect the flotation performance