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Colour measurement as a proxy method for estimation of changes in phase and chemical composition of fly ash formed by combustion of coal

机译：颜色测量作为替代方法，用于估算由煤燃烧形成的粉煤灰的相和化学组成的变化

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摘要

Influence of technology on colour changes of fly ashes was studied in relationships with their chemical and phase composition. Dry bottom boilers at the Detmarovice Power Plant (the Czech Republic) were selected for this study. Combustion tests were performed using mixture of coal and mineral oil residues at the minimum and maximum output of the power plant. Fly ashes for chemical analysis, phase analysis and colour measurements were sampled from the four sections of electrostatic fly ash precipitator. Colour parameters indicate relationships with concentrations of elements which are preferentially bound in silicate matrix. The maximum output of power plant increases the concentration of glass which has decisive influence on values of colour parameters. The changes of colour parameters can indicate the conditions of the technological process. Relationships between colour and constituents of the fly ash are expressed by CIE Lab colour parameters.
机译：研究了技术对粉煤灰颜色变化的影响及其化学和相组成的关系。本研究选择了Detmarovice发电厂（捷克共和国）的干底锅炉。使用发电厂的最小和最大输出处的煤和矿物油残渣的混合物进行燃烧测试。从静电粉煤灰沉淀器的四个部分中采样了用于化学分析，相分析和颜色测量的粉煤灰。颜色参数指示与优先结合在硅酸盐基质中的元素浓度的关系。发电厂的最大输出功率增加了玻璃的浓度，这对颜色参数的值具有决定性的影响。颜色参数的变化可以指示工艺过程的条件。颜色与粉煤灰成分之间的关​​系由CIE Lab的颜色参数表示。

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  • 来源
    《Fuel》 |2009年第11期|2247-2254|共8页
  • 作者

    Helena Raclavska; Konstantin Raclavsky; Dalibor Matysek;

  • 作者单位

    VSB - Technical University Ostrava, 17, Listopadu 15, 708 33 Ostrava - Poruba, Czech Republic VSB - Technical University Ostrava, Geological Engineering, 17, Listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

    VSB - Technical University Ostrava, 17, Listopadu 15, 708 33 Ostrava - Poruba, Czech Republic VSB - Technical University Ostrava, Geological Engineering, 17, Listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

    VSB - Technical University Ostrava, 17, Listopadu 15, 708 33 Ostrava - Poruba, Czech Republic VSB - Technical University Ostrava, Geological Engineering, 17, Listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    colour; fly ash; chemical composition; phase composition;

    机译：颜色;粉煤灰化学成分;相组成;

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