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Employment of fluidized bed ash as a basecourse material; Ryudosho nenshobai wo genryo to shita robanzai no jitsuyoka

Abstract

Generation of coal ash from coal burning fluidized beds reaches 400,000 tons annually, which is anticipated to increase still more in the future. This paper relates to works to develop a basecourse material manufacturing technology by utilizing excellent hydration and solidification characteristics of fluidized bed ash. The developmental works have been moved forward as a subsidy operation of the Agency of Natural Resources and Energy. Upon having obtained a prospect of practical application of the development, the research results are reported in this paper. Coal ash produced in a fluidized bed boiler goes through the following processes: it is added with water and kneaded; formed into rectangular parallelepiped having sides of 10 to 30 cm long by using a forming machine of vibrating and pressurizing type; cured in steam at 60 degC; crushed into sizes smaller than 40 mm; and made into a basecourse material upon adjusting the grain size. A pilot plant completed in 1993 has produced 15,000 tons of the material to date. Properties required as a basecourse material, such as hazardous metal dissolving characteristics and strength sufficiently meet relevant standards or the targeted value. Demonstration tests of the material on roads including public roads have shown as  More>>
Authors:
Ishihara, I; [1]  Tsuzura, K; [2]  Izumi, H; [3]  Goto, H; [4]  Nagaoka, S [5] 
  1. Center for Coal Utilization, Japan, Tokyo (Japan)
  2. Naruto Salt Mfg. Co. Ltd., Tokushima (Japan)
  3. Nippon Hodo Co. Ltd., Tokyo (Japan)
  4. Electric Power Development Co. Ltd., Tokyo (Japan)
  5. Kawasaki Heavy Industries, Ltd., Kobe (Japan)
Publication Date:
Sep 01, 1996
Product Type:
Miscellaneous
Report Number:
ETDE/JP-98750585
Reference Number:
SCA: 010800; 320305; PA: JP-97:0K0409; EDB-98:071265; SN: 98001942575
Resource Relation:
Other Information: PBD: Sep 1996; Related Information: Is Part Of 6th Conference on Coal Utilization Technology; PB: 305 p.; Dai 6 kai sekitan riyo gijutsu kaigi koenshu
Subject:
01 COAL, LIGNITE, AND PEAT; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COAL; FLUIDIZED BED BOILERS; COMBUSTION; ASHES; DETRITUS; SOLIDIFICATION; ROAD TESTS; PAVEMENTS; ROADS; METALS; HAZARDOUS MATERIALS; DISSOLUTION; MECHANICAL PROPERTIES; REGULATORY GUIDES
OSTI ID:
623068
Research Organizations:
Center for Coal Utilization, Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE98750585; TRN: JN97K0409
Availability:
Available from Center for Coal Utilization, Japan, 3-4, Okubo 2-chome, Shinjuku-ku, Tokyo, (Japan); OSTI as DE98750585
Submitting Site:
NEDO
Size:
pp. 158-167
Announcement Date:

Citation Formats

Ishihara, I, Tsuzura, K, Izumi, H, Goto, H, and Nagaoka, S. Employment of fluidized bed ash as a basecourse material; Ryudosho nenshobai wo genryo to shita robanzai no jitsuyoka. Japan: N. p., 1996. Web.
Ishihara, I, Tsuzura, K, Izumi, H, Goto, H, & Nagaoka, S. Employment of fluidized bed ash as a basecourse material; Ryudosho nenshobai wo genryo to shita robanzai no jitsuyoka. Japan.
Ishihara, I, Tsuzura, K, Izumi, H, Goto, H, and Nagaoka, S. 1996. "Employment of fluidized bed ash as a basecourse material; Ryudosho nenshobai wo genryo to shita robanzai no jitsuyoka." Japan.
@misc{etde_623068,
title = {Employment of fluidized bed ash as a basecourse material; Ryudosho nenshobai wo genryo to shita robanzai no jitsuyoka}
author = {Ishihara, I, Tsuzura, K, Izumi, H, Goto, H, and Nagaoka, S}
abstractNote = {Generation of coal ash from coal burning fluidized beds reaches 400,000 tons annually, which is anticipated to increase still more in the future. This paper relates to works to develop a basecourse material manufacturing technology by utilizing excellent hydration and solidification characteristics of fluidized bed ash. The developmental works have been moved forward as a subsidy operation of the Agency of Natural Resources and Energy. Upon having obtained a prospect of practical application of the development, the research results are reported in this paper. Coal ash produced in a fluidized bed boiler goes through the following processes: it is added with water and kneaded; formed into rectangular parallelepiped having sides of 10 to 30 cm long by using a forming machine of vibrating and pressurizing type; cured in steam at 60 degC; crushed into sizes smaller than 40 mm; and made into a basecourse material upon adjusting the grain size. A pilot plant completed in 1993 has produced 15,000 tons of the material to date. Properties required as a basecourse material, such as hazardous metal dissolving characteristics and strength sufficiently meet relevant standards or the targeted value. Demonstration tests of the material on roads including public roads have shown as good result as those obtained from standard basecourse materials. 8 refs., 8 figs., 7 tabs.}
place = {Japan}
year = {1996}
month = {Sep}
}