Title:
重金属成分回収方法
Document Type and Number:
Japanese Patent JP4060679
Kind Code:
B2
Abstract:
To provide a recovery method of heavy metals in ash.
In this heavy metal recovery method, heavy metal components in ash are extracted as heavy metal ions using acidic water; the hydrogen ion concentration of the obtained extracted water is adjusted to 0.1mole/litter or more; a surfactant is added; the extracted water is foamed; the generated foams are separated from the extracted water; and the heavy metal ions are collected and recovered from the separated foams.
COPYRIGHT: (C)2004,JPO
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Inventors:
Hiroshi Horiuchi
Nakata Nobu
Minoru Nakajima
Nakata Nobu
Minoru Nakajima
Application Number:
JP2002290788A
Publication Date:
March 12, 2008
Filing Date:
October 03, 2002
Export Citation:
Assignee:
TEIJIN FIBERS LIMITED
International Classes:
B09B3/00; B01D11/02; F23J1/00; C22B3/44; C22B7/02; C22B30/02
Domestic Patent References:
| JP8309310A | ||||
| JP2000140795A | ||||
| JP2001232352A | ||||
| JP2001087739A | ||||
| JP2002371324A |
Attorney, Agent or Firm:
Hayashi Tsunetoku
Kenji Doi
Kenji Doi