| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for selectively classifying base metal and a base metal compound.SOLUTION: A classification device includes: a powder and granular material input hopper 1; a vibration feeder 4 transporting powder and granular materials flowing down from the input hopper; a clean soil storage tank and a hopper 5 storing the powder and granular materials transported and discharged from the vibration feeder; and a classification storage tank and a hopper 6 storing the powder and granular materials remaining on a trough inner surface of the vibration feeder. The trough inner surface of the vibration feeder is coated with fluororesin. |
