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中文摘要：
采用低温灰化、高温灰化、沉降炉燃烧和热重实验等方法，利用X射线衍射仪（XRD）和场发射扫描电镜结合X射线能谱仪（FSEM—EDX）对灰化灰、燃烧产物以及燃烧高铝煤电厂灰样的物理化学特征进行了详细的研究。结果表明：高铝煤中的铝质矿物主要是勃姆石和高岭石；高岭石高温脱水分解最后形成莫来石，勃姆石500℃时脱水形成，γ—Al2O3，γ-Al2O3随着温度升高转化为θ-Al2O3，θ-Al2O3微晶在1010℃高温下开始熔融聚合形成α—Al2O3；θ-Al2O3微品向α-Al2O3的转变对细颗粒的生成具有重要影响。
英文摘要：
The mineralogy and physicochemical characteristics of low temperature ash （LTA）, high temperature ash （HTA）, and fly ash were described by X-ray diffraction （XRD）, X-ray fluorescence （XRF）, and field scanning electron microscope with energy disperser X-ray spectroscopy （FSEMEDX）. And the transformation of typical aluminum minerals in high temperature was investigated by systematic drop tube furnace （DTF） experiments and thermogravimetric analysis. The results show that the aluminum-bearing minerals in the high A1 coal are mainly boehmite and kaolinite. Kaolinite dehydrated in high temperature and finally transformed to mullite. The phase transformation of boehmite in coal during high temperature treatment is undergone four stages include： boehimte dehydroxylation, transition phase θ-Al2O3 formation, crystal nucleation and α-Al2O3 formation, and growth of α-Al2O3 crystal. The DTF experimental results indicated that the growth of α-Al2O3 crystal has significant impact on PM1 emission.
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