Title:
METHOD FOR REMOVAL OF UNBURNED CARBON CONTAINED IN FLY ASH
Document Type and Number:
WIPO Patent Application WO2007074627
Kind Code:
A8
Abstract:
Disclosed is a method for removal of an unburned carbon contained in a fly ash material. The method comprises the steps of: adding water to the fly ash to prepare a fly ash slurry; shearing the fly ash slurry using an agitating blade that can rotate at a high speed to generate an active energy on the surface of an unburned carbon by the shearing force, thereby imparting lipophilicity to the unburned carbon; and adding a collecting agent and a foaming agent to the slurry containing the lipophylized unburned carbon to cause the attachment of the collecting agent to the lipophylized unburned carbon, and at the same time, causing the attachment of the unburned carbon having the collecting agent attached thereto to an air bubble to separate the unburned carbon by flotation.
Inventors:
MATSUO KAZUYOSHI (JP)
ABE KAZUO (JP)
SUZUKI TAKAO (JP)
SAITO SHINICHIRO (JP)
ABE KAZUO (JP)
SUZUKI TAKAO (JP)
SAITO SHINICHIRO (JP)
Application Number:
PCT/JP2006/324643
Publication Date:
May 29, 2008
Filing Date:
December 11, 2006
Export Citation:
Assignee:
MITSUI SHIPBUILDING ENG (JP)
TAIHEIYO CEMENT CORP (JP)
MATSUO KAZUYOSHI (JP)
ABE KAZUO (JP)
SUZUKI TAKAO (JP)
SAITO SHINICHIRO (JP)
TAIHEIYO CEMENT CORP (JP)
MATSUO KAZUYOSHI (JP)
ABE KAZUO (JP)
SUZUKI TAKAO (JP)
SAITO SHINICHIRO (JP)
International Classes:
B09B5/00; B03D1/02; B09B3/00
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