| Mossbauer spectroscopic studies the characterization of three China coal and the corresponding fly-ashes and bottom ashes |
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| 作者姓名： | 姚多喜 支霞臣 |
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| 作者单位： | [1]Department of Natural Resources and Environmental Engineering, Anhui University of Science and Technology, Huainan 232001, China [2]School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China |
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| 摘 要： | Three fresh China coals （lignitie, bituminite and anthracite） from different geological origin and the corresponding fly and bottom ashes were studied by room temperature（RT） Mossbauer spectroscopy（MS）. The iron-bearing minerals were characterized to be mainly pyrite in all coal samples by the hyperfine parameters.Suphate（FeSO4·nH2O） was found in bituminite and anthracite coal.The MSssbauer spectra of the fly and bottom ashes as a result of pulverised coal combustion（PCC） in Xiaolongtan,Shuicheng and Luohuang Power Plants are comprised of superimposed sextets and doulets of oxides includes maghemite（γ-Fe2O3）, magnitite（Fe3O4）, haematite（α-Fe2O3）, magnesioferite （MgFe2O4）, Fe^3＋/Fe^2＋ -mullite, Fe^3＋ -glass silicate and metallic iron. The studies also show that iron-bearing minerals in coals are largely dependant on geological regions and coal rank, the composition of the corresponding fly and bottom ashes will not only depend on the type and mineralogy of the feed coal but also on the local nature of combustion.
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| 关 键 词： | Mossbauer光谱分析 中国煤炭 煤燃烧 粉煤灰 飞灰 底灰 矿物成分 |
Mossbauer spectroscopic studies the characterization of three China coal and the corresponding fly-ashes and bottom ashes |
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| YA Duo-xi, ZHI Xia-chen.Mossbauer spectroscopic studies the characterization of three China coal and the corresponding fly-ashes and bottom ashes[J].Journal of Coal Science & Engineering(China),2006,12(2):70-74. |
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| Authors: | YA Duo-xi ZHI Xia-chen |
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| Affiliation: | YA0 Duo-xi, ZHI Xia-chen |
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| Abstract: | |
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| Keywords: | Mossbauer spectra coal fly and bottom ash minerals |
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