Abstract The evolution processes of the structure and morphology of coal slime spherical particles in the process of combustion in an air atmosphere are examined in this work. A high-definition camera was used to capture changes in the macrostructure of the particles in the process of combustion, and a large amount of educt at the stage of homogeneous combustion was studied. The main component of the educt was graphite, as determined by X-ray diffraction(XRD),which demonstrated the process whereby the organic carbon molecule structures are transformed from a complicated and disordered condensed aromatic nucleus macromolecular structure to ordered graphite molecules with simple structures inside coal slime particles. Using a conducting N2 adsorption test and analysis, this study found that there were a number of mesopores and a handful of micropores inside the coal slime particles. The pore structures experienced a process that varied from complicated at the initial moment to simple, to complicated and finally to simple. Scanning electron microscope (SEM) photos proved the change process of the above pore structures and found the phenomenon whereby pyrolytic products filled the pores at the stage of homogeneous combustion.

中文翻译：

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燃烧过程中烟煤泥颗粒的形态和结构演化

摘要 本文研究了煤泥球状颗粒在大气燃烧过程中的结构和形貌演化过程。采用高清摄像头捕捉颗粒在燃烧过程中宏观结构的变化，对均质燃烧阶段的大量离析物进行了研究。析出物的主要成分是石墨，X射线衍射（XRD）测定表明有机碳分子结构从复杂无序的稠合芳核大分子结构转变为内部结构简单的有序石墨分子的过程。煤泥颗粒。使用进行 N2 吸附测试和分析，该研究发现，煤泥颗粒内部存在大量中孔和少量微孔。孔隙结构经历了一个从最初复杂到简单，再到复杂，最后到简单的过程。扫描电子显微镜（SEM）照片证明了上述孔隙结构的变化过程，并发现了热解产物在均质燃烧阶段充满孔隙的现象。