This paper aims to reveal the effect of adding biomass ash on the flow characteristics of Zhundong (ZD) coal ash. A new visual image measurement method for the flowability of coal ash was established. Furthermore, scanning electron microscopy (SEM) and x-ray diffraction (XRD) were applied to analyze the influence of surface morphology and mineral component on the fusion fluidity of the samples. The results show that the flow properties of ZD ash are improved to varying degrees after adding maize straw (MS) ash. As the blending ratio increases, the improvement of flow velocity is higher. The critical flow temperature (T_C) of the samples was calculated. The T_C of ZD ash was 1249°C, which decreased with the addition of MS ash. The characterization results showed that adding MS ash increased the melting phase, while the surface of the samples tended to be dense and smooth. Meanwhile, the massive formation of hauyne with a low melting point and the high proportion of SiO₂/Al₂O₃ in the ash promotes the melting behavior of the ash slag. The flow velocity of the samples is improved under the combined action of the increase of the melting phase and the smooth surface.

中文翻译：

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基于图像测量法的煤灰渣流动特性试验研究

本文旨在揭示添加生物质灰对准东（ZD）煤灰流动特性的影响。建立了一种新的粉煤灰流动性视觉图像测量方法。此外，应用扫描电子显微镜（SEM）和X射线衍射（XRD）分析了表面形貌和矿物成分对样品熔融流动性的影响。结果表明，加入玉米秸秆（MS）灰后，ZD灰的流动性能均有不同程度的改善。随着掺混比的增加，流速的提高就越高。计算样品的临界流动温度（T _C）。TC _ _{_}ZD灰的温度为1249°C，随着MS灰的加入而降低。表征结果表明添加MS灰增加了熔融相，而样品表面趋于致密和光滑。同时，灰渣中大量形成低熔点海因和高比例的SiO ₂ /Al ₂ O ₃促进了灰渣的熔融行为。在熔融相的增加和光滑表面的共同作用下，样品的流速得到提高。