Autoclaved Brick from Semi-Dry Desulfuration Ash

Abstract:

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The modified desulfurized ash is prepared through autoclave curing the desulfurized ash for 6 h at 175.4 oC in the presence of 2.0 wt% Fe2O3 and 0.75 wt% H2O2. In this process, 47.64 % of the calcium sulfite in the desulfurized ash is converted into calcium sulfate. The autoclaved brick is made by 36 wt% modified desulfurized ash, 24 wt% fly ash, 32 wt% sand and 8 wt% stones. The water-solid ratio is 0.10. The compressive strength of the brick is up to 15.7 MPa. For this method, the calcium oxide and calcium sulfate in the modification desulfurized ash are used to replace the lime, gypsum and other materials. The solid wastes are reused and natural resources are saved.

Info:

Periodical:

Advanced Materials Research (Volumes 217-218)

Edited by:

Zhou Mark

Pages:

846-851

DOI:

10.4028/www.scientific.net/AMR.217-218.846

Citation:

H. Li et al., "Autoclaved Brick from Semi-Dry Desulfuration Ash", Advanced Materials Research, Vols. 217-218, pp. 846-851, 2011

Online since:

March 2011

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Price:

$35.00

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