Insight into the low-rank coal flotation using amino acid surfactant as a promoter

Diverse utilization of surfactants in coal-floatation for the sustainable development of clean coal production and environmental safety: a review

“…(B) It increases the amount of clean coal by 12% and the amount of ash content almost remains unchanged. 62 Here some experimental results are presented in Table 6, which support these two efficiencies.…”

“…6 and Table 7). 62 (D) The addition of SCG has a signicant impact on the surface tension of a solution. The water phase captures the polar part and the oil phase captures the non-polar, which helps to reduce the oil-water interfacial tension and promote easy emulsication.…”

“…(B) It increases the amount of clean coal by 12% and the amount of ash content almost remains unchanged. 62 …”

“…4). 62 4.1.1 Efficiency of SCG. (A) A small amount of SCG can increase the combustible matter recovery (CMR) of low-rank coal otation.…”

Enhancement of Flotation Performance of Oxidized Coal by the Mixture of Laurylamine Dipropylene Diamine and Kerosene

“…The binding energies at 284.6, 285.3, 286.3, and 288.4 eV, which characterize C-C/C-H, C-O, C=O, and COOH groups, respectively. The relative contents of the four groups were calculated based on the fitted peak areas [29]. Comparing the results of kerosene only and emulsified kerosene for the 12 h oxidized coal, the relative content of C-C/CH is 59.87% and 66.53%, and the increase is 6.66%.…”