(1. 重庆大学 材料科学与工程学院，重庆 400044；
2. 攀钢集团研究院有限公司，攀枝花 617000)
摘 要: 利用内圆柱体旋转法测试TiO2-FeO-SiO2、TiO2-FeO-CaO和TiO2-FeO-MgO三元高钛渣体系的黏度和熔化性温度的变化规律，并结合XRD及激光拉曼光谱对高钛渣结构进行初步的表征。结果表明：SiO2含量增加会提高三元钛渣黏度及熔化性温度，恶化熔渣流动性。CaO和MgO含量增加会降低钛渣黏度及熔化性温度，改善熔渣流动性；钛渣完全熔化后，黏度约为70~100 mPa？s，继续升高温度对钛渣黏度无显著影响。经XRD和Raman光谱分析可知：钛渣凝固后TiO2以金红石形式存在。SiO2、MgO和CaO的添加对TiO2-FeO二元钛渣拉曼特征峰影响不大，但均能使特征峰发生红移；Ca2+和Mg2+以网格修饰子形式进入钛氧八面体，形成CaTiO3和MgTi2O5。
关键字: 高钛渣；黏度；拉曼光谱；结构表征
（1. School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
2. Panzhihua Iron and Steel Research Institute, Panzhihua 617000, China）
Abstract:The viscosity and the melt-property temperature of TiO2-FeO-SiO2, TiO2-FeO-CaO and TiO2-FeO-MgO ternary slag were measured by the cylinder rotation method. The XRD and Raman spectroscope method were used for structural characterization. The results show that SiO2 increases the viscosity and melt-property temperature of slag and worsens the slag fluidity, while CaO and MgO decrease the viscosity and melt-property temperature of slag, and improve the slag fluidity. Once the slag is completely molted, the viscosity is around 70-100 mPa？s, and continuing raising temperature will have no significant effect on viscosity. TiO2 in the solidified slag is in formation of crystal type according to analysis of XRD and Raman spectroscope. The addition of CaO, MgO, SiO2 only has a little influence on TiO2-FeO binary Raman characteristic lines, but all these influence can lead red shift. Ca2+ and Mg2+, as network modifier, enter into the titanium oxide octahedron as a result of forming CaTiO3 and MgTi2O5.
Key words: high titania slag; viscosity; Roman spectra; structural characterization
