Title:
有価金属回収方法
Document Type and Number:
Japanese Patent JP5434934
Kind Code:
B2
Abstract:
Provided is a method for stabilizing the degree of oxidation of molten battery waste, and definitively separating slag and alloy. The method is provided with a pre-oxidation step (ST20) for roasting and oxidizing battery waste; and a drying step (S20) for melting the battery waste oxidized in the pre-oxidation step, and separating and recovering the slag and the valuable metal alloy. By providing the pre-oxidation step (ST20) for oxidizing the battery waste by roasting in advance of the drying step (S20), it is possible to stably obtain the optimal degree of oxidization in a melting step (ST21), and to improve the slag-alloy separation efficiency.
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Inventors:
Junichi Takahashi
Kazuhiro Mori
Toshiro Tan
Kazuhiro Mori
Toshiro Tan
Application Number:
JP2011033177A
Publication Date:
March 05, 2014
Filing Date:
February 18, 2011
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B7/00; B09B3/00; C22B1/02; C22B15/00; C22B23/02; C22B23/06; H01M10/54
Domestic Patent References:
| JP2010231925A | ||||
| JP10330855A | ||||
| JP1060551A | ||||
| JP4128324A |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi