Title:
石炭灰を原料とする粒状固化体の製造方法及びその装置
Document Type and Number:
Japanese Patent JP5081426
Kind Code:
B2
Abstract:
A method of estimating the hydration reactivity of coal ash with high precision and determining the amount of milling water for obtaining a milling product in funicular form at the stage of milling; and a molding method being free from the problem of adhesion to a pressurization board at the stage of molding after the milling. When any collected coal ash exhibits a corrected basicity ((CaO+Fe 2 O 3 +MgO)/SiO 2 (weight ratio)) of 0.1 or higher and a reactivity index (corrected basicity/(R 2 O/Al 2 O 3 ) (weight ratio)) of 10 or higher, the coal ash as a raw ash is transferred to raw ash silo (2). Otherwise, the coal ash is transferred to waste ash silo (3). The raw ash within the raw ash silo (2) is poured in mill (8), and lime and gypsum are added and further milling water is charged thereto and milled. The amount of milling water is regulated so that with respect to agitator power per weight of material milled by the mill, the ratio of (average of power during 30 to 40 sec after completion of water charging)/(power at idling) ranges from 3 to 4, and so that with respect to agitator power per weight of material milled during 30 to 90 sec after completion of water charging, the ratio of (width of power fluctuation)/(averageof power) ranges from 0.1 to 0.3.
Inventors:
Noboru Takigawa
Yasunori Shibata
Atsushi Kondo
Sakurai Tamaki
Yoshiteru Kato
Kozo Kuga
Tengan Yuichi
Tatsuya Ishihara
Atsushi Chinen
Okami Yoshimichi
Noboru Yasuda
Doi Yoshihiko
Yasunori Shibata
Atsushi Kondo
Sakurai Tamaki
Yoshiteru Kato
Kozo Kuga
Tengan Yuichi
Tatsuya Ishihara
Atsushi Chinen
Okami Yoshimichi
Noboru Yasuda
Doi Yoshihiko
Application Number:
JP2006289602A
Publication Date:
November 28, 2012
Filing Date:
October 25, 2006
Export Citation:
Assignee:
Kawasaki Heavy Industries, Ltd.
Coal Energy Center
Nippo, Inc.
Naruto Salt Industry Co., Ltd.
Kansai Electric Power Co., Inc.
Hokkaido Electric Power Company
Okinawa Electric Power Co., Inc.
Power Development Co., Ltd.
THE TOKYO ELECTRIC POWER COMPANY,INCORPORATED
Coal Energy Center
Nippo, Inc.
Naruto Salt Industry Co., Ltd.
Kansai Electric Power Co., Inc.
Hokkaido Electric Power Company
Okinawa Electric Power Co., Inc.
Power Development Co., Ltd.
THE TOKYO ELECTRIC POWER COMPANY,INCORPORATED
International Classes:
B09B3/00; B02C21/00; B02C23/10; B07B1/00; B07B9/00; C09K17/02; C09K17/06; E02D3/00; E02D3/02; E02D3/12; C09K103/00
Domestic Patent References:
| JP2002211968A | ||||
| JP7280709A | ||||
| JP2005138072A |
Attorney, Agent or Firm:
Yoshihiro Tsunoda
Shinji Shinoda
Yasu Furukawa
Toshio Nishitani
Keiji width
Yu Nakao
Yasu Furukawa
Toshio Nishitani
Keiji width
Yu Nakao
Shinji Shinoda
Yasu Furukawa
Toshio Nishitani
Keiji width
Yu Nakao
Yasu Furukawa
Toshio Nishitani
Keiji width
Yu Nakao