Abstract
ABSTRACTLarge-scale experiments were conducted using an FGX-3 dry separator to beneficiate a Chinese coal. The separation results indicated that the FGX separator provided ash reduction from 48.7% in the feed to 31.28% in the clean coal with a mass yield of 65.12%. The clean-coal yield increased as the size range decreased from 80-50 mm to 3-0 mm. Coal with particle sizes between 80 mm and 6 mm responded favorably, while the 6-3 mm size range could not be beneficiated effectively, and coal below 3 mm size did not respond to any separation. The calculation of separation efficiencies indicated that the coarser the particle size the lower the separation density and the lower the Ep value. The amount of 1.8 float material in the tailings was less, which meant lower loss of the low-density, low-ash content particles to the tailings.
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