关键词: 次烟煤, 低温干燥, 复吸, 破碎

Abstract: Taking Jinglong coal as the study object, the low-temperature drying experiment was carried out to investigate the effect of drying temperature on coal drying, re-absorption and crushing characteristics. The results show that, the low-temperature dry of 50~100℃ can make the most of its moisture evaporate at a rapid speed; besides, the higher the drying temperature, the faster evaporation rate and the lower the equilibrium moisture. After low-temperature drying, the re-absorption effect of pulverized coal is not good, but will be improved slightly with the increase of drying temperature; the average particle size of pulverized coal decreased slightly and shows no obvious relation with the drying temperature.