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Recovery of Waste Fine Coal by Oil Agglomeration

Suresh M. Shrauti and David W. Arnold

Demineralization of Blue Creek coal by selective agglomeration using diesel oil involves high-shear mixing to disperse the diesel in a slurry of fine coal and separation of the resulting agglomerates from the tailings. A total of 54 agglomeration trials were made with thickener underflow from the Jim Walters Resources Inc. No. 4 mine preparation plant. Two additional particle size distributions of the thickener underflow were obtained by wet grinding and all three coals were stored under water. All experiments were performed at room temperature. The feed which has less than 1 wt% of total sulfur is suitable for recovery by oil agglomerations with a coal-water fuel are reported.

Keywords: coal, waste, agglomeration

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