Title:
METHOD FOR TREATING COAL ASH
Document Type and Number:
Japanese Patent JP2004209378
Kind Code:
A
Abstract:
To inexpensively treat coal ash discharged from a coal firing boiler into an easily treatable form suitable for reclamation or the like.
The calcium oxide-coating coal ash discharged from the coal firing boiler such as a pressure fluidized bed type boiler is a material suitable as the object for consolidation by carbonation treatment. Thus, moisture is incorporated into a granular raw material including the calcium oxide-containing coal ash as a part of the raw material at least, then the moisture-containing granular raw material is brought into a carbonation reaction in the presence of carbon dioxide, thereby consolidating the raw material particles of the calcium oxide-containing coal ash properly with each other.
Inventors:
WATANABE KEIJI
TAKAHASHI TATSUTO
TAKAHASHI TATSUTO
Application Number:
JP2002381515A
Publication Date:
July 29, 2004
Filing Date:
December 27, 2002
Export Citation:
Assignee:
JFE STEEL KK
International Classes:
C04B28/10; B09B3/00; (IPC1-7): B09B3/00; C04B28/10
Attorney, Agent or Firm:
Hideto Tomabechi