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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
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume25Issue:10Pages:3475-3483
Abstract

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.

KeywordTitanyl Sulfate Solution Hydrolysis Process Growth Model Magnesium Sulfate Aluminum Sulfate Particle Size
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/S1003-6326(15)63985-1
Indexed BySCI
Language英语
WOS KeywordLOW-TEMPERATURE ; TIO2 ; PRECIPITATION ; PARTICLES ; KINETICS ; TIOSO4 ; RUTILE
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(51090380) ; National Basic Research Program of China(2013CB632601 ; 2013CB632604)
WOS IDWOS:000366760200039
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20178
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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