| 摘要 |
PROBLEM TO BE SOLVED: To provide a dry separation method capable of attaining the continuous separation of separation objects at a low cost and in an environmentally friendly manner.SOLUTION: This dry separation method includes supplying separation objects into a solid/gas fluidized bed where powder is fluidized, introducing gas dispersed in the solid/gas fluidized bed, and separating the separation objects by using the apparent density of the solid/gas fluidized bed, wherein the recovery rate of the separation objects is changed according to the specific gravity difference of the separation objects. In a preferred embodiment of this dry separation method, when the specific gravity of separation of the solid/gas fluidized bed is Dp, the separation object that has a specific gravity outside a range of Dp±0.2 is recovered at a faster speed than the separation object that has a specific gravity within the range of Dp±0.2. |
