Abstract
Washing pre-treatment of municipal solid waste incineration (MSWI) fly ash blended with shale and sludge was utilized in the manufacture of light-weight aggregates and processed to form ceramic pellets. A formula uniform design was performed to arrange the mixture ratio of the materials. The optimal mixture ratio of the materials was determined by measuring the bulk density, granule strength, and 1 h water absorption of the pellets. It is shown that the optimal mixture ratios of materials, MSWI fly ash, shale, and sludge, are 23.16%, 62.58%, and 14.25% (mass fraction), respectively. The performance testing indicators of light-weight aggregates are obtained under the optimum mixture ratio: bulk density of 613 kg/m3, granule strength of 821N, and 1 h water absorption of 11.6%, meeting 700 grade light-aggregate of GB/T 17431.2—1998 standard. The results suggest that utilization of MSWI fly ash in light-weight aggregates is an effective method and a potential means to create much more values.
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Foundation item: Project(CSTC.2011AC7065) supported by the Science & Technology Committee of Chongqing, China; Project(50808184) supported by the National Natural Science Foundation of China
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Tan, Wf., Wang, La., Huang, C. et al. Utilization of municipal solid waste incineration fly ash in lightweight aggregates. J. Cent. South Univ. Technol. 19, 835–841 (2012). https://doi.org/10.1007/s11771-012-1080-8
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DOI: https://doi.org/10.1007/s11771-012-1080-8