電気集じん機により段別採取したフライアッシュの鉱物組成の変化

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  • Mineralogical Variability of Fly Ashes Classified by Electrostatic Precipitator.

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The mineralogical compositions of bituminous fly ashes varied depending on the locations of hoppers attached to an electrostatic precipitator in coal-fired power plant. From the first hopper towards the third hopper, that is, as the particles of fly ashes decreased in size, the content of glassy phase increased, while the amount of α-quartz decreased. When the boiler was operated at full load in comparison with operating at half load, the content of glassy phase was greater. The chemical compositions of the glassy phase showed a tendency in Al2O3 increase, while SiO2 decreased as the particles size became smaller.

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