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Title:
METHOD FOR MANUFACTURING MODIFIED FLY ASH, AND APPARATUS FOR MANUFACTURING MODIFIED FLY ASH
Document Type and Number:
Japanese Patent JP2019107618
Kind Code:
A
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:
TATSUMI YOSHINORI
TERASAKI JUNICHI
SATO TAKAYUKI
Application Number:
JP2017242656A
Publication Date:
July 04, 2019
Filing Date:
December 19, 2017
Export Citation:
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Assignee:
TAIHEIYO CEMENT CORP
JUJO PAPER CO LTD
International Classes:
B09B3/00; B09B5/00; C04B18/08; F27B7/08; F27D13/00
Domestic Patent References:
JPH07155740A1995-06-20
JP2017029942A2017-02-09
JPH06134435A1994-05-17
JPH1111999A1999-01-19
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, vol. 29巻No.1, JPN6017042171, 2007, JP, pages 183 - 188, ISSN: 0004583426
Attorney, Agent or Firm:
Creation International Patent Office