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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35970

    Title: 都市垃圾焚化底渣燒製輕質骨材膨脹機制之研究
    Other Titles: The expansion mechanism of lightweight aggregate sintering from MSWI bottom ash
    Authors: 陳政綱;Chen, Cheng-gang
    Contributors: 淡江大學水資源及環境工程學系碩士班
    高思懷;Gau, Sue-huai
    Keywords: 粗底渣;氧化鐵;逸氣分析;膨脹氣體;lightweight aggregate;MSWI bottom ash;Expansion
    Date: 2007
    Issue Date: 2010-01-11 07:24:38 (UTC+8)
    Abstract: 已往都市垃圾焚化底渣再利用的產品常為道路級配、管溝回填料、填方材等,而為了增加底渣回收再利用之價值,嘗試將底渣進行輕質骨材的燒製。早期輕質骨材皆以天然材料為素材,如浮石、膨脹頁岩、板岩、黏土礦物等,而都市垃圾焚化灰渣由於成份複雜,性質不均,和天然膨脹材料與其他人工膨脹材料的性質差異甚大,需經適當調整。
    Lightweight aggregate was produced by natural expansion material, e.g. pumice, shale, and clay. This study used a municipal solid waste incinerator (MSWI) bottom ash as the material to sinter an artificial lightweight aggregate.Comparing MSWI bottom ash with natural expansion material, we found that the compounds of MSWI bottom ash were complex and heterogeneous. Therefore adding SiO2 and Fe2O3 to the milling of MSWI bottom ash was necessary. And then we used different parameters of sintering to understand the quantity of the expansion gas during the sintering process. The experiment was divided into four parts. First experiment discussed the relation between the quantity of the expansion gas with Fe2O3 when fixed the quantity of MSWI bottom ash and specimens didn’t have deformed during the sintering process. Second experiment fixed the parameters of the sintering and comprehended the influence of adding SiO2. Third experiment, added 10% of fine grain MSWI bottom ash and Fe2O3 to coarse grain MSWI bottom ash, found the effect of adding the fine grain MSWI bottom ash. Final experiment discussed the effect of the form of the artificial lightweight aggregate in the different sintering atmospheres. The compounds of MSWI bottom ash for producing CO2 were more important than adding Fe2O3. In addition the reduction atmosphere was helpful to produce the high quality of the artificial lightweight aggregate.
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Thesis

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