Influence of magnesium and aluminum salts on hydrolysis of titanyl sulfate solution
Fang, Fu-qiang1,2,3; Liu, Ya-hui2,3; Meng, Fan-cheng1,2,3; Wang, Wei-jing2,3; Xue, Tian-yan2,3; Qi, Tao2,3
2015-10-01
发表期刊TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
卷号25期号:10页码:3475-3483
摘要

The influence of magnesium and aluminum salts as impurities on the hydrolysis of titanyl sulfate was investigated. The degree of TiOSO4 conversion to hydrated titanium dioxide (HTD) and the particle size of HTD were measured as functions of the concentrations of MgSO4 and Al-2(SO4)(3) in the TiOSO4 solution. The Boltzmann growth model, which focuses on two main parameters, namely the concentrations of Mg2+ and Al3+ (rho(Mg2+) and rho(Al3+), respectively), fits the data from the hydrolysis process well with R-2>0.988. The samples were characterized by ICP, SEM, XRD, and laser particle size analyzer. It is found that the addition of MgSO4 simultaneously improves the hydrolysis ratio and the hydrolysis rate, especially when F (the mass ratio of H2SO4 to TiO2) is high, hydrolysis ratio increases from 42.8% to 83.0%, whereas the addition of Al-2(SO4)(3) has negligible effect on the chemical kinetics of HTD precipitation during the hydrolysis process, hydrolysis ratio increases from 42.8% to 51.9%. An investigation on the particle size of HTD reveals that the addition of MgSO4 and Al-2(SO4)(3) clearly increases the size of the crystallites and decreases the size of the aggregates.

关键词Titanyl Sulfate Solution Hydrolysis Process Growth Model Magnesium Sulfate Aluminum Sulfate Particle Size
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/S1003-6326(15)63985-1
收录类别SCI
语种英语
关键词[WOS]LOW-TEMPERATURE ; TIO2 ; PRECIPITATION ; PARTICLES ; KINETICS ; TIOSO4 ; RUTILE
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China(51090380) ; National Basic Research Program of China(2013CB632601 ; 2013CB632604)
WOS记录号WOS:000366760200039
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20178
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
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Fang, Fu-qiang,Liu, Ya-hui,Meng, Fan-cheng,et al. Influence of magnesium and aluminum salts on hydrolysis of titanyl sulfate solution[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2015,25(10):3475-3483.
APA Fang, Fu-qiang,Liu, Ya-hui,Meng, Fan-cheng,Wang, Wei-jing,Xue, Tian-yan,&Qi, Tao.(2015).Influence of magnesium and aluminum salts on hydrolysis of titanyl sulfate solution.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,25(10),3475-3483.
MLA Fang, Fu-qiang,et al."Influence of magnesium and aluminum salts on hydrolysis of titanyl sulfate solution".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 25.10(2015):3475-3483.
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