Method for processing target material comprising clump-shaped copper wire scraps

A method for processing a processing target material comprising rod-shaped processing target material and clump-shaped processing target material, the method comprising:

• sieving the processing target material using a vibrating sieve comprising a plurality of screens arranged along a conveying direction while conveying the processing target material;
• wherein each screen comprises a plate-shaped flat portion and a comb-tooth-shaped portion,
• wherein, except for the screen located at the most downstream side in the conveying direction, the comb-tooth-shaped portion of each screen overlaps with a part of the flat portion of an adjacent screen located downstream in the conveying direction to form a plurality of openings,
• wherein assuming a diameter of the plurality of openings is D and a length of the flat portion in the conveying direction is L1, a relationship of 2×D≤L1≤10×D is satisfied, wherein assuming a gap between the comb-tooth-shaped portion and the flat portion of each of two screens forming the plurality of openings is H, a relationship of 0.2×D≤H≤0.5×D is satisfied,
• the method characterized in that, by the sieving, the clump-shaped processing target material comprised in the processing target material is collected above a top of the vibrating sieve.