D0L:10.13374.issn1001-053x.2013.10.013 第35卷第10期 北京科技大学学报 Vol.35 No.10 2013年10月 Journal of University of Science and Technology Beijing 0ct.2013 TiO2-Al2O3-CaO-SiO2低碱度高钛渣熔体黏度特性 董相娟)，孙昊延12)，佘雪峰)，薛庆国)，王静松1)☒ 1)北京科技大学冶金与生态工程学院钢铁冶金新技术国家重点实验室，北京100083 2)中国科学院过程工程研究所多相复杂系统国家重点实验室，北京100190 ☒通信作者，E-mail:wangjingsong@ustb.cdu.cn 摘要研究了TiO2含量、Al2O3含量以及二元碱度(CaO/SiO2)对TiO2-Al2O3-CaO-SiO2低碱度高钛渣黏度的影响. 实验采用旋转柱体法在1633~1873K温度范围内对渣系熔体黏度进行了测量.当TiO2质量分数为23%~43%、A1203 质量分数为3%~12%和二元碱度为0.30.7时，钛渣熔体黏度随TO2含量和碱度的增加而降低，随A2O3含量的增 加而增加.通过对转底炉·电炉熔分过程渣系脱硫能力计算，得知在低碱度高钛渣中TO2属于酸性.依据黏度测量数 据和对TiO2属性的界定，通过修正Urbain模型建立了低碱度高钛渣的熔体黏度预报模型.模型预测结果误差为11%， 证明新模型对于低碱度高钛渣的黏度具有良好的预报效果. 关键词磁铁矿：渣：黏度：碱度：数学模型 分类号TF02 Viscosity characteristics of TiO2-Al2O3-CaO-SiO2 fully liquid slags with high TiO2 content and low mass ratio of CaO to SiO2 DONG Xiang-juan),SUN Hao-yan2),SHE Xue-feng),XUE Qing-guo),WANG Jing-song) 1)State Key Laboratory of Advanced Metallurgy,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China Corresponding author,E-mail:wangjingsong@ustb.edu.cn ABSTRACT The effects of TiO2 content,Al2Os content and binary basicity (CaO/SiO2)on the viscosity of a TiO2- Al2Os-CaO-SiO2 fully liquid slag with high TiO2 content and low mass ratio of CaO to SiO2 were studied in this paper. Experimental determinations of the viscosity were carried out in the temperature range from 1633 to 1873 K using the rotation cylinder method.When the TiO2 content is from 23%to 43%,the Al2Os content is from 3%to 12%,and the binary basicity is from 0.3 to 0.7,the viscosity of the slag decreases with increasing TiO2 content and alkalinity,but increases with increasing Al2O3 content.TiO2 is classified as an acidic oxide by calculating the sulfur partition rate of the slag in the electric furnace melting process.Based on the data of viscosity measurement and the definition of TiO2 attributes,a new melt viscosity prediction model of the slag was proposed by modifying the Urbain model.Its prediction error is 11%,indicating that the model provides a reasonable prediction for fully liquid slags with high TiOacontent and low mass ratio of CaO to SiO2. KEY WORDS magnetite:slags;viscosity;basicity:mathematical models 我国钛资源十分丰富，约占全球储量的31%四.用高炉流程治炼回收其中的铁和钒元素，钛元素则 国内钛资源多以钒钛磁铁矿形式存在，目前主要采以TO2形式进入渣中.高炉钛渣含TO2质量分 收稿日期：2012-09-20 基金项目：国家自然科学基金重大资助项目（⑤1090381）第 35 卷 第 10 期 北 京 科 技 大 学 学 报 Vol. 35 No. 10 2013 年 10 月 Journal of University of Science and Technology Beijing Oct. 2013 TiO2-Al2O3-CaO-SiO2低碱度高钛渣熔体黏度特性 董相娟1)，孙昊延1,2)，佘雪峰1)，薛庆国1)，王静松1) 1) 北京科技大学冶金与生态工程学院钢铁冶金新技术国家重点实验室, 北京 100083 2) 中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190 通信作者，E-mail: wangjingsong@ustb.edu.cn 摘 要 研究了 TiO2 含量、Al2O3 含量以及二元碱度 (CaO/SiO2) 对 TiO2-Al2O3-CaO-SiO2 低碱度高钛渣黏度的影响. 实验采用旋转柱体法在 1633∼1873 K 温度范围内对渣系熔体黏度进行了测量. 当 TiO2 质量分数为 23%∼43%、Al2O3 质量分数为 3%∼12%和二元碱度为 0.3∼0.7 时，钛渣熔体黏度随 TiO2 含量和碱度的增加而降低，随 Al2O3 含量的增 加而增加. 通过对转底炉 - 电炉熔分过程渣系脱硫能力计算，得知在低碱度高钛渣中 TiO2 属于酸性. 依据黏度测量数 据和对 TiO2 属性的界定，通过修正 Urbain 模型建立了低碱度高钛渣的熔体黏度预报模型. 模型预测结果误差为 11%， 证明新模型对于低碱度高钛渣的黏度具有良好的预报效果. 关键词 磁铁矿；渣；黏度；碱度；数学模型 分类号 TF02 Viscosity characteristics of TiO2-Al2O3-CaO-SiO2 fully liquid slags with high TiO2 content and low mass ratio of CaO to SiO2 DONG Xiang-juan1), SUN Hao-yan1,2), SHE Xue-feng1), XUE Qing-guo1), WANG Jing-song1) 1) State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China Corresponding author, E-mail: wangjingsong@ustb.edu.cn ABSTRACT The effects of TiO2 content, Al2O3 content and binary basicity (CaO/SiO2) on the viscosity of a TiO2- Al2O3-CaO-SiO2 fully liquid slag with high TiO2 content and low mass ratio of CaO to SiO2 were studied in this paper. Experimental determinations of the viscosity were carried out in the temperature range from 1633 to 1873 K using the rotation cylinder method. When the TiO2 content is from 23% to 43%, the Al2O3 content is from 3% to 12%, and the binary basicity is from 0.3 to 0.7, the viscosity of the slag decreases with increasing TiO2 content and alkalinity, but increases with increasing Al2O3 content. TiO2 is classified as an acidic oxide by calculating the sulfur partition rate of the slag in the electric furnace melting process. Based on the data of viscosity measurement and the definition of TiO2 attributes, a new melt viscosity prediction model of the slag was proposed by modifying the Urbain model. Its prediction error is 11%, indicating that the model provides a reasonable prediction for fully liquid slags with high TiO2content and low mass ratio of CaO to SiO2. KEY WORDS magnetite; slags; viscosity; basicity; mathematical models 我国钛资源十分丰富，约占全球储量的 31%[1] . 国内钛资源多以钒钛磁铁矿形式存在，目前主要采 用高炉流程冶炼回收其中的铁和钒元素，钛元素则 以 TiO2 形式进入渣中. 高炉钛渣含 TiO2 质量分 收稿日期：2012-09-20 基金项目：国家自然科学基金重大资助项目 (51090381) DOI:10.13374/j.issn1001-053x.2013.10.013