Title:
金属複合廃材からの有価金属の回収方法および装置
Document Type and Number:
Japanese Patent JP4366513
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a treating means which is applicable even to such powder and granular materials as small as 1 to 2 mm in diameter or below by simple and cost effective means and is therefore adequate for recovering of nonferrous valuable metals, such as copper, from waste metallic composite materials, such as waste electronic substrates. SOLUTION: This method consists in removing ferrous metals from the powder and granular materials of minus sieve of 2 mm mesh obtained by crushing the waste metallic composite materials, such as waste electronic substrates, then classifying the powder and granular materials to coarse grain concentrate (b) containing the nonferrous valuable metals, such as copper, and fine grain tailing (c) mainly composed of nonmetals by an eddy current sorting machine A annexed with a suction device B, and in succession, classifying the powder and granular materials consisting of the fine grain tailing (c) to non-sucked concentrate (d) containing the nonferrous metals, such as copper, and sucked tailing mainly composed of the nonmetals of fine lightweight powder in a suction device B. The suction device B is constituted by enclosing the front space at the end of a rotor section 4 of the eddy current sorting machine A with a partition 7 and arranging a suction nozzle 8 toward the fine grain tailing (c) falling from a conveyor belt 5.
Inventors:
Koji Matsuda
Hisashi Sasaki
Hisashi Sasaki
Application Number:
JP32163799A
Publication Date:
November 18, 2009
Filing Date:
November 11, 1999
Export Citation:
Assignee:
DOWA ECO-SYSTEM Co., Ltd.
International Classes:
B09B5/00; B03C1/23; B03C1/30
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Attorney, Agent or Firm:
Kenji Wada
Komatsu Taka
Komatsu Taka