Phase equilibria of CaO-SiO2-5wt% MgO-10wt%Al2O3-TiO2 system at 1300 °C and 1400 °C relevant to Ti-bearing furnace slag

被引:29
|
作者
Shi, Junjie [1 ,2 ,3 ]
Sun, Lifeng [1 ,2 ]
Qiu, Jiyu [1 ,2 ]
Zhang, Bo [1 ,2 ]
Jiang, Maofa [1 ,2 ]
机构
[1] Minist Educ, Key Lab Ecol Met Multimetall Ores, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[3] Wenhua Rd, Shenyang 110819, Liaoning Provin, Peoples R China
基金
中国国家自然科学基金;
关键词
Phase diagram; Liquidus; Equilibrium; TiO2; Thermodynamic; THERMODYNAMICS; DIAGRAM;
D O I
10.1016/j.jallcom.2016.12.328
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The liquidus temperatures and phase relations of Ti-bearing slag systems play an important fundamental guiding role for the comprehensive utilization of Ti resources, while the lack of thermodynamic information severely restricts the development of above mentioned systems. In the present work, the phase equilibrium relationships were investigated for the CaO-SiO2-5wt%MgO-10wt%Al2O3-TiO2 phase diagram system. The equilibrium phases were experimentally determined at 1300 degrees C and 1400 degrees C using the high temperature equilibrium technique followed by X-Ray Fluoroscopy (XRF), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray spectroscope (EDX) analysis. The liquid phase (L), melilite solid solution phase ((2CaO center dot MgO center dot 2SiO(2), 2CaO center dot Al2O3-SiO2)(ss)), perovskite phase (CaO center dot TiO2) and dicalcium silicate phase (2CaO center dot SiO2) were found. Based on the experimental results, the 1300 degrees C-1500 degrees C isotherms and phase relations were obtained for CaO-SiO2-5wt%MgO-10wt%Al2O3-TiO2 system relevant to Ti-bearing slag system. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:193 / 199
页数:7
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