Dissolution and diffusion of TiO2 in the CaO-Al2O3-SiO2 slag

被引：1
作者：
Zhong-shan Ren [1 ,2 ]
Xiao-jun Hu [1 ]
Xin-mei Hou [2 ]
Xiang-xin Xue [3 ]
Kuo-chih Chou [1 ,2 ]
机构：
[1] State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing
[2] School of Materials and Metallurgy,Northeastern University
[3] School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing
来源：
International Journal of Minerals Metallurgy and Materials | 2014年 / 21卷 / 04期
关键词：
slags; titanium dioxide; dissolution; diffusion; interface;
D O I：
暂无
中图分类号：
X756 [冶金工业];
学科分类号：
083002 ;
摘要：
The dissolution of TiO2 in the CaO-Al2O3-SiO2 slag under static conditions was studied in the temperature range from 1643 K to 1703 K. After TiO2 dissolved, the microstructure of the interface between TiO2 and the slag was observed by scanning electron microscopy, and the concentration profiles of Ti4+ and other ions across the TiO2/slag interfaces were analyzed by energy-dispersive X-ray spectroscopy. On the basis of these results, the dissolution behavior of TiO2 was evaluated, and the diffusivity of Ti4+ in the bulk slag was estimated. According to the Stokes–Einstein relation, the viscosity calculated by a previously reported model gave a diffusivity of Ti4+ ions greater than that estimated by the concentration profiles of Ti4+ ions. The mechanism of TiO2 dissolution in the CaO-Al2O3-SiO2 slag is discussed in detail.
引用
收藏
页码：345 / 352
页数：8
相关论文
共 50 条
  • [41] Dissolution mechanism of alumina inclusions into CaO-SiO2-Al2O3-FetO-MgO slag via a converter tapping process
    Song, Shenyang
    Li, Jing
    Yan, Wei
    INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2022, 19 (05) : 2734 - 2748
  • [42] Dissolution of CaO-SiO2-Al2O3 glasses modified by Mn in alkaline conditions
    Liu, Qiang
    Wu, Meng
    Sun, Guowen
    Gao, Jianming
    Zhang, Yunsheng
    Liu, Cheng
    CONSTRUCTION AND BUILDING MATERIALS, 2025, 472
  • [43] A Chemical Approach of the Molecular Entity Vacancy Model to the CaO-Al2O3-SiO2 Ternary Silicate Melt
    Tao, Dong-Ping
    STEEL RESEARCH INTERNATIONAL, 2011, 82 (03) : 277 - 286
  • [44] A comprehensive investigation on the viscosity and structure of CaO-SiO2-Al2O3-MgO-BaO slag with different Al2O3/SiO2 ratios
    Qin, Jianghao
    Liu, Wenguo
    Wu, Huajie
    Wang, Jingsong
    Xue, Qingguo
    Zhao, Hongbo
    Zuo, Haibin
    JOURNAL OF MOLECULAR LIQUIDS, 2022, 365
  • [45] In-situ observation of isothermal CaSiO3 crystallization in CaO-Al2O3-SiO2 melts: A study of the effects of temperature and composition
    Liu, Jing-Jing
    Chen, Gong
    Yan, Peng-Cheng
    Planpain, Bart
    Moelans, Nele
    Guo, Muxing
    JOURNAL OF CRYSTAL GROWTH, 2014, 402 : 1 - 8
  • [46] High-temperature calorimetric study of oxide component dissolution in a CaO-MgO-Al2O3-SiO2 slag at 1450°C
    Koryttseva, Anastasia
    Navrotsky, Alexandra
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2017, 100 (03) : 1172 - 1177
  • [47] Dissolution Behavior of Alumina-Based Inclusions in CaF2-Al2O3-CaO-MgO-SiO2 Slag Used for the Electroslag Metallurgy Process
    Dong, Yanwu
    Jiang, Zhouhua
    Yu, Ang
    METALS, 2016, 6 (11):
  • [48] Dissolution kinetics of alumina in molten CaO-Al2O3-FetO-MgO-SiO2 oxide representing the RH slag in steelmaking process
    Park, Young-Joon
    Cho, Yong-Min
    Cha, Woo-Yeol
    Kang, Youn-Bae
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2020, 103 (03) : 2210 - 2224
  • [49] Phase-field simulation and analytical modelling of CaSiO3 growth in CaO-Al2O3-SiO2 melts
    Liu, Jingjing
    Zou, Ji
    Guo, Muxing
    Moelans, Nele
    COMPUTATIONAL MATERIALS SCIENCE, 2018, 144 : 126 - 132
  • [50] Crystallization Kinetics and Dielectric Properties of a Low-Fire CaO-Al2O3-SiO2 Glass + Alumina System
    Wu, Chun-Wei
    Jean, Jau-Ho
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2016, 99 (08) : 2664 - 2671
12345