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Title:
改質フライアッシュの製造方法、及び、改質フライアッシュの製造装置
Document Type and Number:
Japanese Patent JP7042608
Kind Code:
B2
Abstract:
To provide a method for manufacturing a modified fly ash which prevents occurrence of a fly ash that does not satisfy a desired quality from a supplied coal ash and can more efficiently manufacture a modified fly ash, and can more effectively be utilized as an admixture material of concrete, and an apparatus for manufacturing a modified fly ash.SOLUTION: A method for manufacturing a modified fly ash includes: a crushing step of crushing a coal ash so that the Blaine specific surface area is 4,500 cm/g to 10,000 cm/g to obtain a first fly ash; and a heating step of heating the first fly ash by an external heat type rotary kiln so that a percentage content of unburned carbon contained in the fly ash is 0.5 mass% or less.SELECTED DRAWING: Figure 2

Inventors:
Kei Tatsumi Exhibition
Junichi Terasaki
Takayuki Sato
Application Number:
JP2017242656A
Publication Date:
March 28, 2022
Filing Date:
December 19, 2017
Export Citation:
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Assignee:
Taiheiyo Cement Co., Ltd.
NIPPON PAPER INDUSTRIES CO.,LTD.
International Classes:
B09B3/40; B09B5/00; C04B18/08; F27B7/08; F27D13/00
Domestic Patent References:
JP7155740A
JP2017029942A
JP6134435A
JP11011999A
Other References:
李相培、佐藤嘉昭、岡田秀敏、清原千鶴,焼成工程を備えた風力微粉砕システムによる石炭灰の改質,コンクリート工学年次論文集,日本,コンクリート工学会,2007年,29巻No.1,P183-P188
Attorney, Agent or Firm:
Creation International Patent Office