WO2018008513 (A1)

Method of using fly ash

(22) 29.06.2017

(43) 11.01.2018

(57) In the present invention, a sieve having openings of 75 to 20 µm is prepared and by classification using the sieve, fly ash original powder is divided into powder retained by the sieve and powder passed through the sieve. Fly ash fine powder which passed through the sieve is used as a cement admixture, and fly ash course powder which was retained by the sieve is used to manufacture cement clinkers.

(71) Tokuyama Corp (JP)

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