Construction and Application of Activity Models for CaO-SiO2-Al2O3-TiO2 Slag System

被引：0

作者：

Li S. ^{[1
]}

Zheng X. ^{[1
]}

Ma A. ^{[1
]}

Zhu S. ^{[1
]}

Pan D. ^{[1
]}

Peng W. ^{[1
]}

机构：

[1] School of Chemical and Materials Engineering, Liupanshui Normal University, Liupanshui

来源：

| 1600年 / Editorial Office of Chinese Journal of Rare Metals卷 / 44期

关键词：

Coexistence theory; Factsage; Perovskite; Recycling; Ti-containing slag;

D O I：

10.13373/j.cnki.cjrm.XY19010032

中图分类号：

学科分类号：

摘要：

The Ti-containing slag, which is produced by the smelting process for V-Ti-Fe ore, has not been sufficient recovered until now due to the lack of related thermodynamic data. Therefore, the activity model was established by the molecular-ion coexisting theory for CaO-SiO2-Al2O3-TiO2 slag system, and calculated by Matlab software. Based on the calculated results and the concept of selective precipitation and enrichment technique, it was proved that CaO•TiO2 phase could be selected as a candidate to enrich the Ti element by adjusting composition and temperature, and SiO2, Al2O3 could be enriched to other non-Ti containing phases at the same time. In combination with the phase diagram calculated by Factsage software, the activity of CaO•TiO2, 2CaO•SiO2, 2CaO•Al2O3•SiO2 phases at 1600℃ were plotted and systematic analyzed. The results indicated that with the reference to typical composition of Ti-containing slag, the activity of CaO•TiO2 phase increased with the increase of basicity, which was favorable for the enrichment of Ti element in CaO•TiO2 phase, and other elements into 2CaO•SiO2 and 2CaO•Al2O3•SiO2 phases, realizing the separation of Ti-containing phase. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.

引用

页码：540 / 546

页数：6

共 18 条

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