| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for recovering metal from electronic or electric parts with resin in which values metal such as gold, silver and copper can be sorted, and efficiently recovered. SOLUTION: This recovering method comprises a crushing step for crushing the electronic or electric parts with resin into pieces having the size of <=10 mm, a dust-collecting step for collecting the dust generated in the crushing step, a first magnetic force sorting step for sorting the crushed stuff generated in the crushing step into magnetic stuff and non-magnetic stuff with the magnetic force of 100-2,000 Gauss by a magnetic sorting machine, a second magnetic force sorting step for sorting the dust collected in the dust-collecting step into magnetic stuff and non-magnetic stuff with the magnetic force of 100-2,000 Gauss by a magnetic force sorting machine, and a second screening step for screening the non-magnetic stuff obtained in the second magnetic force sorting step. The magnetic stuff obtained in the first and second magnetic force sorting steps and the undersized stuff obtained in the second screening step are mixed to be briquetted, and treated by a copper refining furnace to obtain valued metal. |
