Abstract
ABSTRACT In this work, a three-product slime flotation experiment was conducted utilizing a two-stage direct flotation method with the BS collector and dodecane reagent system to maximize the flotation efficiency and reduce the flotation tailings along with an increase in its ash content. Modern analytical methods, such as X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) were used for analyzing the surface characteristics of the samples and their interaction with collectors. The results demonstrated a significantly higher ash content of secondary flotation tail coal compared to the primary one with increasing reagent dose. Ash content for clean coal ranges from 8.00% to 9.00% when the overall net coal output surpasses 85%, and it rises to 30.00% to 50.00% for flotation tail coal. The surface hydration membrane and BS collector form a hydrogen bond through the -OH functional group, which results in increased hydrophobicity and effectiveness of flotation.
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