Title:
METHOD FOR SEPARATING LEAD FROM COMBUSTION ASH
Document Type and Number:
Japanese Patent JP2007154236
Kind Code:
A
Abstract:
To provide a treatment method by which a new circulation system can be established and a social contribution can be made by stopping the landfill disposal of lead-containing combustion ash and effectively utilizing the combustion ash for soil use, e.g., as a soil improvement material, a grassland improvement material, a backfill material, an earth filling material, etc.
In the method for separating a lead component from the combustion ash, one kind or plural kinds selected from iron powders and iron compounds are previously added in an amount of 0.1 to 50 mass% to the combustion ash containing the lead component and then heat treatment is carried out to eliminate the lead component from the combustion ash.
Inventors:
KIMURA KENJI
IWASAKI MAKOTO
NAGASE NORIAKI
IWASAKI MAKOTO
NAGASE NORIAKI
Application Number:
JP2005348717A
Publication Date:
June 21, 2007
Filing Date:
December 02, 2005
Export Citation:
Assignee:
OJI PAPER CO
International Classes:
C22B13/02; B01D53/64; B09B3/00; C22B7/02; F23J1/00; C22B3/04
Attorney, Agent or Firm:
Kanaya
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