含有固体质点的高黏性熔渣高温物性数据
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含钛高炉渣碳化工艺对于提高钛资源利用率和生产高性能碳化钛产品意义重大，在碳化冶炼制备碳化钛过程中，含有固体质点的高黏性熔渣高温物理化学性质对于生产过程中的炉况正常运行及精细化操作非常重要。特别是含有固体质点的高黏性熔渣的电导率、界面行为等高温物性影响冶炼过程中炉况的变化情况。因此，通过以上系统研究含有固体质点的高黏性熔渣的物相组成、电导率和界面行为，得出以下结论： （1）通过对含有固体质点的高黏性熔渣的物相组成及分布规律研究，发现了固体质点在高黏性熔渣中主要是以TiC的形式存在的，明确了TiC主要集中分布在高黏性熔渣的中下部。此外，若熔渣中含有金属铁，TiC也会在熔渣的上部边缘生成并且其被大量铁相包裹。 （2）通过对含有固体质点的高黏性熔渣的粘度及电导率的规律研究，探明了含有固体质点的高黏性熔渣的粘度随着温度的升高而降低，随碳化率升高（即TiC含量增加）而增加，探明了随着温度的升高，碳化渣的电导率均呈现不断增加的趋势，随TiC含量的增加而增加。 （3）通过研究，明确了含有固体质点的高黏性熔渣的界面行为，分析了含有固体质点的碳化渣物相变化对界面行为的规律。通过对含钛高炉渣与石墨、TiC和TiN润湿行为的分析可知，含钛高炉渣与石墨不润湿，与TiC和TiN良好；通过对含有固体质点的碳化渣与TiC润湿行为的分析可知，碳化渣中TiC含量增大，碳化渣与TiC润湿性会降低；通过对金属铁与TiC和TiN润湿行为的分析可知，金属铁与TiC和TiN不润湿。
The carburization process of titania-bearing blast furnace slag is of great significance for improving the utilization rate of titanium resources and producing high-performance titanium carbide products. During the preparation of titanium carbide via carburization smelting, the high-temperature physicochemical properties of high-viscosity molten slag containing solid particles are critical for the stable operation of the furnace and precise operational control in the production process. Specifically, high-temperature physical properties such as electrical conductivity and interfacial behavior of the high-viscosity molten slag containing solid particles affect the furnace condition changes during the smelting process. Therefore, through systematic research on the phase composition, electrical conductivity and interfacial behavior of the high-viscosity molten slag containing solid particles, the following conclusions are drawn: (1) Through the study on the phase composition and distribution law of the high-viscosity molten slag containing solid particles, it is found that solid particles mainly exist in the form of titanium carbide (TiC) in the high-viscosity molten slag, and it is confirmed that TiC is mainly concentrated in the middle and lower parts of the slag. In addition, if the molten slag contains metallic iron, TiC will also form at the upper edge of the slag and be largely wrapped by the iron phase. (2) Through the study on the viscosity and electrical conductivity rules of the high-viscosity molten slag containing solid particles, it is verified that the viscosity of such slag decreases with increasing temperature and increases with the rise of carburization rate (i.e., the increase of TiC content). It is also confirmed that the electrical conductivity of the carburized slag continuously increases with rising temperature and the increase of TiC content. (3) Through the research, the interfacial behavior of the high-viscosity molten slag containing solid particles is clarified, and the law of the effect of phase changes of the carburized slag containing solid particles on the interfacial behavior is analyzed. Based on the analysis of the wetting behavior of titania-bearing blast furnace slag with graphite, TiC and TiN, it is found that the slag does not exhibit wettability with graphite, but shows good wettability with TiC and TiN. Through the analysis of the wetting behavior between the carburized slag containing solid particles and TiC, it is found that the wettability between the carburized slag and TiC decreases with the increase of TiC content in the slag. Through the analysis of the wetting behavior of metallic iron with TiC and TiN, it is found that metallic iron does not exhibit wettability with TiC and TiN.
