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《材料导报》期刊社  2018, Vol. 32 Issue (12): 2100-2104    https://doi.org/10.11896/j.issn.1005-023X.2018.12.030
  材料研究 |
TiO2对连铸三元无氟CaO-SiO2-TiO2渣系特性的影响
王杏娟1,2,田阔1,2,樊亚鹏3,王浩楠1,2,吴哲1,2
1 华北理工大学冶金与能源学院,唐山 063000;
2 河北省高品质钢连铸工程技术研究中心,唐山 063000;
3 邢台钢铁有限责任公司,邢台 054000
Impact of TiO2 on Properties of Three Element Fluorine Free CaO-SiO2-TiO2 Slag System for Continuous Casting
WANG Xingjuan1,2, TIAN Kuo1,2, FAN Yapeng3, WANG Haonan1,2, WU Zhe1,2
1 College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063000;
2 Hebei Engineering Research Center of High Quality Steel Continuous Casting, Tangshan 063000;
3 Xingtai iron and Steel Co., Ltd., Xingtai 054000
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摘要 采用热力学软件对三元无氟CaO-SiO2-TiO2渣系中TiO2含量选择进行宏观计算,结合黏度测试仪及热丝法结晶测定仪开展了TiO2含量对连铸三元无氟CaO-SiO2-TiO2渣系渣黏度和结晶特性的影响规律的实验研究,进一步模拟计算了实际组分实验渣的热力学规律,深入探讨了该渣系中TiO2性质及对保护渣冶金特性影响的机理。结果表明:(1)CaO-SiO2-TiO2三元无氟渣系TiO2含量在3%~9%(质量分数,下同)之间,保护渣黏度随着TiO2含量增加而降低;TiO2含量在9%~11%之间,黏度随着TiO2含量增加而升高。(2)CaO-SiO2-TiO2三元无氟渣系结晶性能随着TiO2含量的增加而增强,渣系主要析出晶体为钙钛矿(Ca-TiO3)。(3)TiO2含量对保护渣网络结构的影响显著,TiO2含量在3%~7%范围内,作为破网物存在,TiO2含量大于7%时,以结网物存在。    
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王杏娟
田阔
樊亚鹏
王浩楠
吴哲
关键词:  热力学计算  二氧化钛  黏度  结晶    
Abstract: The TiO2 content in the ternary fluoride-free CaO-SiO2-TiO2 slag system was calculated by using the thermodyna-mic software, effect of TiO2 content on viscosity and crystallization characteristics of continuous casting ternary fluoride-free CaO-SiO2-TiO2 slag system were tested with viscosity tester and hot wire crystallization tester, the thermodynamic law of actual component experimental slag was simulated and calculated, the characteristics of TiO2 in the slag system and its effect on metallurgical properties of slag were discussed in detail. The results showed:Ⅰ The content of TiO2 is between 3%—9%, and the viscosity of protective slag decreases with the increase of TiO2 content; the content of TiO2 is between 9%—11%, and the viscosity increases with the increase of TiO2 content. Ⅱ The crystallization property increases with the increase of TiO2 content, and the main precipitation crystal is perovskite (CaTiO3). Ⅲ The influence of TiO2 on the network structure of the flux is significant, the TiO2 content is in 3%—7% range, which exists as a broken net, and when the TiO2 content is more than 7%, it is in the presence of net.
Key words:  thermodynamics calculation    TiO2    viscosity    crystallization
               出版日期:  2018-06-25      发布日期:  2018-07-20
ZTFLH:  TF77  
基金资助: 国家自然科学青年基金(51404088);河北省自然科学基金(E2015209217)
作者简介:  王杏娟:女,1978年生,博士,副教授,主要从事连铸保护渣相关研究 Tel:0315-2592189 E-mail:xinger_311@sina.com
引用本文:    
王杏娟,田阔,樊亚鹏,王浩楠,吴哲. TiO2对连铸三元无氟CaO-SiO2-TiO2渣系特性的影响[J]. 《材料导报》期刊社, 2018, 32(12): 2100-2104.
WANG Xingjuan, TIAN Kuo, FAN Yapeng, WANG Haonan, WU Zhe. Impact of TiO2 on Properties of Three Element Fluorine Free CaO-SiO2-TiO2 Slag System for Continuous Casting. Materials Reports, 2018, 32(12): 2100-2104.
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http://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2018.12.030  或          http://www.mater-rep.com/CN/Y2018/V32/I12/2100
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