Dense-Medium Cycloning of Fine Coal at Low Specific Gravities

摘要

A series of 36 pilot plant tests was run to study the separation efficiency of dense-medium cyclones cleaning 9 mesh x 100 mesh (9m x 100m) coal at a specific gravity of separation of 1.30. The probable error achieved at average operating conditions was 0.029, which compares favorably with the performance of conventional cyclones cleaning coarser material at higher cut points. Over the experimental ranges studied, inlet pressure was found to have no significant effect on performance, whereas increasing coal concentration and decreasing particle size resulted in a decrease in performance efficiency. (ERA citation 08:022987)