Abstract
This study investigated the adsorption behavior of a totally hydrophobic polymer, FR-7A, and its role in the flocculation and filtration of fine coal slurries. Adsorption of FR-7A on coal, pyrite, and shale minerals revealed that: (a) FR-7A had a higher adsorption affinity to coal and pyrite than that on shale; (b) an acidic slurry condition favored unselective adsorption of FR-7A on coal minerals, leading to improved total flocculation and filtration of fine coal slurries, while alkaline pH and the presence of SMP favored selective adsorption and flocculation of coal from associated minerals in the slurry; and (c) FR-7A aided the flocculation of coal slurries and improved the moisture removal by filtration from 42.4 to 37%.
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