The combustion characteristic of mold fluxes is extremely important for the high‐quality slabs and the smooth casting process, which is directly determined by the type and content of carbon materials. Herein, the physicochemical properties and combustion characteristics of carbon materials are investigated by field emission scanning electron microscopy, X‐ray diffraction, Brunauer–Emmett–Teller theory, and thermogravimetry (TG) and differential scanning calorimetry (DSC), followed by the influences of carbon materials on the combustion and melting behavior of mold fluxes. The results show that: 1) the fixed carbon content in single‐carbon materials and carbon‐added mold fluxes can be determined by TG curves; 2) the combustion temperature ranges and the combustion reaction time of single‐carbon materials and carbon‐added mold fluxes can be characterized by DSC curves; and 3) the combustion characteristics of carbon are influenced by mold fluxes, leading to a shorter combustion reaction time. The reduction of combustion reaction time for 1# and 2# being 7.5 and 8.2 min is much larger than that of 2.4 min for 3#. Finally, the melting behavior of mold fluxes is influenced by carbon, especially the melting temperature, flowing temperature, and the melting time, showing an increase trend. However, the softening temperature shows little change.

中文翻译：

---

一种评估碳材料和铸型助燃剂燃烧特性的新方法

铸模助熔剂的燃烧特性对于高质量的铸坯和平稳的铸造工艺极为重要，这直接取决于碳材料的类型和含量。在此，通过场发射扫描电子显微镜，X射线衍射，Brunauer-Emmett-Teller理论，热重法（TG）和差示扫描量热法（DSC）研究了碳材料的理化性质和燃烧特性。碳材料对模具助熔剂的燃烧和熔融行为。结果表明：1）TG曲线​​可以确定单碳材料中的固定碳含量和加碳的铸模通量。2）可以通过DSC曲线表征单碳材料和添加了碳的铸模助熔剂的燃烧温度范围和燃烧反应时间；3）碳的燃烧特性受铸模助熔剂影响，从而缩短了燃烧反应时间。1＃和2＃的燃烧反应时间减少为7.5和8.2分钟，远比3＃的2.4分钟减少。最后，保护渣的熔化行为受碳的影响，特别是熔化温度，流动温度和熔化时间，呈现出增加的趋势。但是，软化温度几乎没有变化。2分钟远大于3＃的2.4分钟。最后，保护渣的熔化行为受碳的影响，特别是熔化温度，流动温度和熔化时间，呈现出增加的趋势。但是，软化温度几乎没有变化。2分钟远大于3＃的2.4分钟。最后，保护渣的熔化行为受碳的影响，特别是熔化温度，流动温度和熔化时间，呈现出增加的趋势。但是，软化温度几乎没有变化。