Title:
METHOD FOR USING FLY ASH
Document Type and Number:
WIPO Patent Application WO/2018/168637
Kind Code:
A1
Abstract:
A method for using fly ash, said method comprising: measuring the unburned carbon content of fly ash (PCF ash) generated from a pulverized coal combustion boiler; sorting the PCF ash on the basis of a preset threshold of unburned carbon content and storing the same; in the PCF ash sorted above, classifying a portion of PCF ash having a low unburned carbon content into a coarse powder and a fine powder; using the fine powder as fly ash for a cement mixing material or a concrete mixing material; in the PCF ash sorted above, mixing a portion of PCF ash having a high unburned carbon content with the coarse powder or fly ash (FBF ash) generated from a fluidized bed combustion boiler; and using the mixed powder thus obtained as a starting material for producing a cement clinker.
Inventors:
OMURA KOHEI (JP)
SEKI TAKUYA (JP)
SEKI TAKUYA (JP)
Application Number:
PCT/JP2018/008968
Publication Date:
September 20, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
B09B5/00; C04B18/08; C04B7/26; G01N33/22; G01N33/38
Foreign References:
| JPS5960115A | 1984-04-06 | |||
| JPH0478481A | 1992-03-12 | |||
| JP2002059148A | 2002-02-26 | |||
| JPH0741228U | 1995-07-21 | |||
| JP2011526827A | 2011-10-20 |
Attorney, Agent or Firm:
ONO, Hisazumi et al. (JP)
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