Title:
有価金属回収方法及び有価金属回収システム
Document Type and Number:
Japanese Patent JP6375205
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a valuable metal recovery method and a valuable metal recovery system capable of efficiently recovering valuable metals such as gold in waste.SOLUTION: Provided is a valuable metal recovery system 1 comprising a vertical mill 20 where mill refined flour obtained by pulverizing raw material waste and having a prescribed grain size distribution obtainable as the result of the pulverization and mill exhausted stone including coarse flour with a grain size distribution located in the large diameter side than the prescribed grain size distribution are selected, and, by conducting the pulverization and selection in such a manner that prescribed grain size distribution of the mill refined flour is regulated, the ratio of the content of the valuable metals in the mill exhausted stone to the content of the valuable metals in the raw material waste is regulated in such a manner that the content of the valuable metals in the mill exhausted stone is made higher than the content of the valuable metals in the raw material waste.SELECTED DRAWING: Figure 1
Inventors:
Tomonori Takemoto
Yasuyuki Ishida
Yasuyuki Ishida
Application Number:
JP2014222030A
Publication Date:
August 15, 2018
Filing Date:
October 30, 2014
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
C22B7/02; B03C1/00; B07B9/00; B09B3/00; B09B5/00; C22B11/00; C22B15/00; C22B19/02
Domestic Patent References:
| JP11057651A |
Attorney, Agent or Firm:
Creation International Patent Office