Method for processing electronic and electric device component scraps

Patent metadata

Field	Value
Publication number	US-2022176410-A1
Application number	US-202017599236-A
Country	US
Kind code	A1
Filing date	Mar 27, 2020
Priority date	Mar 29, 2019
Publication date	Jun 9, 2022
Grant date	—

Abstract

Provided is a method for processing electronic and electrical device component scrap, which can improve an efficiency of sorting of raw materials fed to the smelting step from electronic and electrical device component scrap, and reduce losses of valuable metals. A method for processing electronic and electrical device component scrap which includes sorting electronic and electrical device component scrap by wind powder sorting to remove plate-shaped materials containing valuable metals included in the electronic and electrical device component scrap, and then sorting the resulting sorted objects by magnetic sorting.

First claim

1 . A method for processing electronic and electrical device component scrap, comprising sorting electronic and electrical device component scrap by wind powder sorting to remove plate-shaped materials containing valuable metals included in the electronic and electrical device component scrap, and then sorting resulting sorted objects by magnetic sorting.

2 . The method for processing electronic and electrical device component scrap according to claim 1 , wherein the plate-shaped objects comprise at least one of substrates with lead wires, substrates with no lead wire, and ICs.

3 . The method for processing electronic and electrical device component scrap according to claim 1 , wherein the plate-shaped objects having a maximum diameter of 100 mm or less are removed.

4 . The method for processing electronic and electrical device component scrap according to claim 1 , wherein the plate-shaped objects in the sorted objects are reduced to 10% by mass or less by the wind power sorting.

5 . The method for processing electronic and electrical device component scrap according to claim 1 , wherein the wind power sorting is carried out at a wind velocity of 15 m/s or more.

6 . The method for processing electronic and electrical device component scrap according to claim 1 , wherein the plate-shaped objects are sorted by using a wind power sorter, the wind power sorter comprising:
a diffusion chamber which diffuses the plate-shaped objects therein using an air flow; a blower which generates the air flow in the diffusion chamber; a feed portion which feeds the electronic and electrical device component scrap into the diffusion chamber while vibrating the scrap; and a guide portion extending into the diffusion chamber from a terminal of the feed portion, the guide portion being arranged such that the air flow is brought into uniform contact with the plate-shaped objects from lower surfaces of the plate-shaped objects in a perpendicular direction to the lower surfaces of the plate-shaped objects.

7 . The method for processing electronic and electrical device component scrap according to claim 1 , wherein the electronic and electrical device component scrap before being subjected to the wind power sorting is crushed using a shear type crusher or a hammer type crusher.

8 . The method for processing electronic and electrical device component scrap according to claim 1 , further comprising performing eddy current sorting after the magnetic sorting.

Assignees

• Jx Nippon Mining & Metals Corp

Inventors

• Aoki Katsushi
• Sasaoka Hidetoshi

Classifications

• B09B3/35

  Shredding, crushing or cutting · CPC title

• B07B9/00

  Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets · CPC title

• B03C1/02

  acting directly on the substance being separated · CPC title

• B02C23/20

  after crushing or disintegrating · CPC title

• B03C1/24

  with material carried by travelling fields · CPC title