DE-ASHING DEVICE FOR COAL

PURPOSE:To obtain de-ashed coal having low content of ash by reduced labor with a small amount of oil, by blending coal-water slurry with an oil and air to give coal agglomerate-containing slurry, separating an ash layer from it, concentrating and dehydrating it. CONSTITUTION:Coal-water slurry and an emulsifying oil are fed to the stirrer 9, compressed air generated by the operation of the air compressor 7 is introduced to the slurry, they are blended with stirring to give coal agglomerate-containing slurry. It is then sent to the separating and washing tank 11, blended with water, washed by the stirring tank 11a, allowed to leave at rest by the tank 11b into a coal layer and an ash layer. The prepared slurry containing the coal agglomerate with low ash content is concentrated and dehydrated by the dehydrator 14, to give the desired de-ashed coal.