METHOD AND DEVICE FOR MODIFYING FLY ASH

WIPO Patent Application WO/2019/176640

A1

The method for modifying fly ash according to the present invention comprises: a heating step for heating raw fly ash powder containing unburned carbon to a temperature of 780-1000°C to reduce the amount of unburned carbon contained in the raw fly ash powder; a classifying step for introducing the thermally-treated fly ash obtained by the heating step and having a reduced amount of unburned carbon, into a classifying device with the fly ash kept at a high temperature, and separating the fly ash into coarse powder and fine powder; a fine powder-collecting step for collecting the fine powder of the thermally-treated fly ash obtained in the classifying step, using a dust collector; and a pulverizing and collecting step for pulverizing the coarse powder of the thermally-treated fly ash obtained in the classifying step to the extent that the amount of 45-μm sieve residues thereof is 34 mass% or less, and collecting the resulting powder.

JP2006193344	SELF-LEVELING MATERIAL
JP5425697	Hydraulic composition
JP2008223385	POROUS CONCRETE AND ITS MANUFACTURING PROCESS

OMURA KOHEI (JP)
KAKIZONO KENICHI (JP)
SEKI TAKUYA (JP)
KAWANO TAKESHI (JP)

PCT/JP2019/008560

September 19, 2019

March 05, 2019

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TOKUYAMA CORP (JP)

C04B18/08; B02C25/00; B07B9/00; B09B3/00; B09B5/00; C04B7/26; F23J1/00

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JPH08119693A	1996-05-14
JP2011156517A	2011-08-18
JP2008126117A	2008-06-05
JPH1160299A	1999-03-02

YOSHIO KASAI: "The concrete ", 10 June 1998, THE CONCRETE , Tokyo JP, ISBN: 978-4-7654-3156-9, article YOSHIO KASAI: "Passage the concrete overview ", pages: 87 - 88, XP009522884

ONO, Hisazumi et al. (JP)

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