| 摘要 |
PURPOSE:To separate efficiently unburnt coal content in coal ash. CONSTITUTION:The hydrophobic process and flotation process are carried out in a low pH zone formed by adding a pH adjuster 20 into water slurry of coal ash in the disposal method of coal ash consisting of the hydrophobic process for turning unburnt coal content hydrophobic by adding a collecting agent 22 into water slurry of coal ash and the floatation process in which foams are formed by adding a foaming agent 23 into water slurry, having the unburnt coal content attached to said foams and floating the same. |
