Effect of TiO2 and FeO on the Viscosity and Structure of Blast Furnace Primary Slags
Effect of TiO2 and FeO on the Viscosity and Structure of Blast Furnace Primary Slags
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DOI：
10.1002/srin.201600296
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发表时间：
2017-05-01
影响因子：
2.2
通讯作者：
Liu, Yan Xiang
中科院分区：
文献类型：
--
作者：
Jiao, Ke Xin;Zhang, Jian Liang;Liu, Yan Xiang
采用旋转圆筒法研究了TiO 2和FeO对CaO-MgO-Al 2 O3-SiO2-TiO 2-FeO渣系粘度的影响。用傅里叶变换红外光谱和拉曼光谱研究了猝灭样品的结构特征。实验结果表明，在碱度和其他组分含量不变的情况下，随着TiO 2或FeO含量的增加，粘度降低。傅里叶变换红外光谱和拉曼光谱结果表明，渣中[AlO 4]四面体的不对称伸缩振动带没有明显变化，渣中没有Q（3）。结果表明，渣中的TiO 2和FeO均表现为碱性氧化物，破坏了渣中的硅酸盐网络，降低了渣的粘度。拉曼光谱结果表明，渣中的Q（2）随FeO的增加而增加，随TiO 2的减少而减少。随着Ti-O-Si或Ti-O-Ti伸缩振动的减小和O-Ti-O或O-（Si，Ti）-O伸缩振动的增大，硅酸盐的聚合度降低，使炉渣粘度降低。
The effects of TiO2 and FeO on the viscosities of CaO-MgO-Al2O3-SiO2-TiO2-FeO slag are investigated by the rotating cylinder method. The structural characterization of the quenched samples are also studied by Fourier transform infra-red and Raman spectroscopy. Experimental results show that viscosity decreases with increasing TiO2 or FeO, while keeping the basicity and contents of other components constant. Both, Fourier transform infra-red and Raman spectroscopy results show that there are no significant change of the asymmetric stretching vibration bands for [AlO4] tetrahedra among the slags and there is no Q(3) in the slags. It is concluded that both TiO2 and FeO in the slags behave as basic oxides, which break the silicate network in the slag and reduce the slag viscosity. The Raman spectroscopy results show that the Q(2) in slag increases with increasing FeO and decreasing TiO2. The polymerization degree of silicates decreases with decreasing Ti-O-Si or Ti-O-Ti stretch vibration and increasing O-Ti-O or O-(Si, Ti)-O stretch vibration, which make the slag viscosity decrease.