(1. 重慶大學(xué) 材料科學(xué)與工程學(xué)院，重慶 400044；
2. 攀鋼集團研究院有限公司，攀枝花 617000)
摘 要: 利用內(nèi)圓柱體旋轉(zhuǎn)法測試TiO2-FeO-SiO2、TiO2-FeO-CaO和TiO2-FeO-MgO三元高鈦渣體系的黏度和熔化性溫度的變化規(guī)律，并結(jié)合XRD及激光拉曼光譜對高鈦渣結(jié)構(gòu)進行初步的表征。結(jié)果表明：SiO2含量增加會提高三元鈦渣黏度及熔化性溫度，惡化熔渣流動性。CaO和MgO含量增加會降低鈦渣黏度及熔化性溫度，改善熔渣流動性；鈦渣完全熔化后，黏度約為70~100 mPa？s，繼續(xù)升高溫度對鈦渣黏度無顯著影響。經(jīng)XRD和Raman光譜分析可知：鈦渣凝固后TiO2以金紅石形式存在。SiO2、MgO和CaO的添加對TiO2-FeO二元鈦渣拉曼特征峰影響不大，但均能使特征峰發(fā)生紅移；Ca2+和Mg2+以網(wǎng)格修飾子形式進入鈦氧八面體，形成CaTiO3和MgTi2O5。
關(guān)鍵字: 高鈦渣；黏度；拉曼光譜；結(jié)構(gòu)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
