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EVALUATION OF LOW GRAVITY DENSE MEDIA CYCLONE PERFORMANCE IN CLEANING FINE COAL
Citation:
Zalar, J. EVALUATION OF LOW GRAVITY DENSE MEDIA CYCLONE PERFORMANCE IN CLEANING FINE COAL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-83/057 (NTIS PB84122936), 1983.
Description:
The report gives results of 36 pilot plant tests, conducted to evaluate the performance of dense-medium cyclones in cleaning fine coal (9x100 mesh) at low specific gravity (1.3). Test variables included two orifice sizes, three medium-to-coal ratios, and six flow rates. The clean coal and refuse from these tests were separated into three size fractions and float/sink tested at eight specific gravities. Performance criteria used in these evaluations included: four dependent criteria (recovery efficiency, misplaced material, yield error, and ash error), three independent criteria (probable error, error area, and imperfection), and three sulfur-based criteria (percent sulfur in coal, percent sulfur reduction, and percent reduction in pounds per million Btu).