关键词: 表面水, 液态化干法分选, 潮湿煤炭, 分选干燥一体化

Abstract: In order to improve the adaptability to separate wet coal, the adhesion behavior between coal surface water and dense medium was analyzed, and the influence of coal surface water and dense medium water for the dry coal separations was investigated. In the same time, the contrast tests were done by the integration device of separating and drying. The results showed that it was an effective approach to separate wet coal by the integration device. With the air volume 8m3/h, wet coal was separated by fluidized bed at 50℃ for 2 min, the removal efficiency of coal surface water reached up to 91.5%,and the Ep value was less than 0.062g/cm3. With the increasing of the coal water and dense medium water, the Ep value increased and the separation effect decreased. In the same time, the bed pressure drop sharply fluctuates and the minimum fluidization velocity significant improvement by the increasing of dense medium water. The adhesion rate of dense medium significant growth firstly, then rich to the maximum, and gradually decreased finally with the increasing of adhesion time.