Preparation of nano TiO2 from Ti-bearing blast furnace slag by molten salt method

被引：0

作者：

Li, Xin ^{[1
]}

Yu, Honghao ^{[1
,2
,3
]}

Zhang, Houfang ^{[1
]}

Xue, Xiangxin ^{[2
,3
]}

机构：

[1] School of Material Science and Engineering, Shenyang Ligong University, Shenyang, 110159, Liaoning

[2] School of Material and Metallurgy, Northeastern University, Shenyang, 110819, Liaoning

[3] Liaoning Key Laboratory for Recycling of Metallurgical Resources, Shenyang, 110819, Liaoning

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Leaching; Molten salt; Nanoparticles; Thermodynamics; Ti-bearing blast furnace slag; TiO[!sub]2[!/sub;

D O I：

10.11949/j.issn.0438-1157.20141029

中图分类号：

学科分类号：

摘要：

A novel process was proposed for preparing titanium dioxide by decomposition of titanium-bearing blast furnace slag (TBBFS) in molten NaOH-NaF system. Thermodynamic analysis was conducted on the molten salt decomposition of TBBFS. The effects of mass ratio of alkali and slag, reaction time and reaction temperature on titanium extraction and the effects of pH and hydrolysis temperature on purity of titanium dioxide were discussed. The reaction of sodium titanate from TBBFS with sodium hydroxide was feasible thermodynamically. When optimum mass ratio of alkali and slag was 3:1, reaction temperature was 500℃, and reaction time was 3 h, titanium extraction was 99.8%. Optimum pH and hydrolysis temperature were 0.1-0.2 and 100℃ respectively. Analysis results indicated good sphericity and dispersibility of TiO2 particles with diameter about 100 nm. © All Rights Reserved.

引用

页码：827 / 833

页数：6

共 22 条

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