Title:
METHOD FOR MANUFACTURING MODIFIED FLY ASH, AND APPARATUS FOR MANUFACTURING MODIFIED FLY ASH
Document Type and Number:
Japanese Patent JP2019107620
Kind Code:
A
Abstract:
To provide a method for manufacturing a modified fly ash which reduces an unburned carbon content using an internal combustion type rotary kiln in all of supplied coal ashes.SOLUTION: A method for manufacturing a modified fly ash includes: a classification step of classifying a fly ash subjected to heating treatment by an internal combustion type rotary kiln into 75 μm or less; a collecting step of collecting the sly ash classified into a fine grain side as a compatible article; a crushing step of crushing the fly ash classified into a coarse grain side so that a Blaine surface area is 4,000 cm/g or more; a measurement step of measuring a content ratio of the unburned carbon of the fly ash crushed in the crushing step; a determination step of determining appropriateness with the content ratio of the unburned carbon measured in the measurement step; and a re-heating step of subjecting the fly ash determined as the incompatible article to the heating treatment by the internal combustion type rotary kiln again.SELECTED DRAWING: Figure 2
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Inventors:
TATSUMI YOSHINORI
TERASAKI JUNICHI
TERASAKI JUNICHI
Application Number:
JP2017242658A
Publication Date:
July 04, 2019
Filing Date:
December 19, 2017
Export Citation:
Assignee:
TAIHEIYO CEMENT CORP
International Classes:
B09B3/00; B02C25/00; B09B5/00; C04B18/08; F27B7/10
Domestic Patent References:
| JPH0719440A | 1995-01-20 | |||
| JP2008126117A | 2008-06-05 | |||
| JP2014044026A | 2014-03-13 | |||
| JP2017148762A | 2017-08-31 | |||
| JP2017148790A | 2017-08-31 |
Foreign References:
| WO2008072299A1 | 2008-06-19 | |||
| US5976224A | 1999-11-02 |
Other References:
山本 武志 ら: "フライアッシュの未燃炭素除去技術", 電力中央研究所報告, JPN6021030820, October 2013 (2013-10-01), ISSN: 0004666208
Attorney, Agent or Firm:
Creation International Patent Office